CN216930012U

CN216930012U - Radio frequency system and communication device

Info

Publication number: CN216930012U
Application number: CN202122995601.9U
Authority: CN
Inventors: 王国龙
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-07-08
Anticipated expiration: 2031-11-30

Abstract

The embodiment of the application relates to a radio frequency system and communication equipment, wherein the radio frequency system comprises: a radio frequency transceiver; the power amplification module is connected with the radio frequency transceiver and used for carrying out power amplification processing on the preset low-frequency signals of the 4G or 5G standard; the receiving and transmitting module is respectively connected with the power amplification module, the first antenna and the second antenna, and is used for respectively receiving preset low-frequency signals received by the first antenna and the second antenna; the first receiving module is respectively connected with the radio frequency transceiver and the transmitting module, and is used for receiving the preset low-frequency signals received by the first antenna and also used for carrying out MIMO (multiple input multiple output) receiving on the preset low-frequency signals received by the second antenna.

Description

Radio frequency system and communication device

Technical Field

The embodiment of the application relates to the technical field of radio frequency, in particular to a radio frequency system and communication equipment.

Background

With the development and progress of the technology, mobile communication technology is gradually beginning to be applied to communication devices such as mobile phones and the like. With the development and progress of the technology, the 5G mobile communication technology is gradually beginning to be applied to electronic devices. The 5G mobile communication technology communication frequency is higher than that of the 4G mobile communication technology. Therefore, various devices for supporting communication in the communication apparatus are also increasing, resulting in a larger volume of the communication apparatus.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a radio frequency system and communication equipment, which can optimize and improve the integration level of the radio frequency system, thereby reducing the volume of the communication equipment.

A radio frequency system, comprising:

a radio frequency transceiver;

the power amplification module is connected with the radio frequency transceiver and used for performing power amplification processing on the preset low-frequency signals of the 4G or 5G standard;

the receiving and transmitting module is respectively connected with the power amplifying module, the first antenna and the second antenna, and is used for respectively receiving the preset low-frequency signals received by the first antenna and the second antenna, the receiving and transmitting module is configured with a through path and a filtering path, the filtering path can filter the transmitted preset low-frequency signals, and the receiving and transmitting module is further used for supporting the transmission processing of 2G standard signals;

the first receiving module is used for receiving the preset low-frequency signal from the first antenna through the through path so as to receive the preset low-frequency signal received by the first antenna, and the first receiving module is further used for receiving the preset low-frequency signal from the second antenna through the filtering path so as to receive the preset low-frequency signal received by the second antenna in an MIMO manner.

A communication device comprising a radio frequency system as described above.

The radio frequency system comprises a radio frequency transceiver, a power amplification module, a transceiver module and a first receiving module. The radio frequency transceiver, the power amplification module, the transceiver module and the first antenna can form a transmitting path of a 4G or 5G standard preset low-frequency signal, the transceiver module and the first antenna can form a transmitting path of a 2G standard signal, the first antenna, the transceiver module and the first receiving circuit can form a through path to support receiving of the preset low-frequency signal, and the second antenna, the transceiver module and the first receiving circuit can form a filtering path with a filtering processing function to support main set MIMO receiving of the preset low-frequency signal. Based on the transceiver module integrated with the filtering function, the embodiment of the application provides a radio frequency system with higher integration level, so that the volume of the radio frequency system can be reduced, and further the volume of communication equipment can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a block diagram of an embodiment of a radio frequency system;

FIG. 2 is a second block diagram of the RF system according to an embodiment;

fig. 3 is a third block diagram of an exemplary rf system;

FIG. 4 is a block diagram of an embodiment of a RF system;

FIG. 5 is a block diagram of an embodiment of a radio frequency system;

FIG. 6 is a sixth block diagram illustrating an exemplary RF system;

FIG. 7 is a seventh block diagram illustrating the structure of the RF system according to an embodiment;

fig. 8 is a block diagram of a communication device according to an embodiment.

Element number description:

a radio frequency transceiver: 10; a power amplification module: 100; a second power amplifying unit: 110; a third power amplification unit: 120 of a solvent; a fourth power amplifying unit: 130, 130; a transceiver module: 200 of a carrier; a through path: 201; a filtering path: 202; a first switching unit: 210; a first filtering unit: 220, 220; a first power amplification unit: 230; a first receiving module: 300, respectively; a first low noise amplification unit: 310; a second low noise amplification unit: 320, a first step of mixing; a third low noise amplification unit: 330; a second filtering unit: 410; a first combiner: 420; a third filtering unit: 510; a second receiving module: 600; a first switch module: 700 of the base material; a second switching unit: 710; a fourth filtering unit: 720; a fifth filtering unit: 810; a sixth filtering unit: 910; a second combiner: 920.

Detailed Description

To facilitate an understanding of the embodiments of the present application, the embodiments of the present application will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. The embodiments of the present application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments of this application belong. The terminology used herein in the description of the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the terms "second" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "second" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, "a number" means at least one, such as one, two, etc., unless specifically limited otherwise.

The radio frequency system according to the embodiment of the present application may be applied to a communication device having a wireless communication function, where the communication device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing devices connected to a wireless modem, and various forms of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and the like. For convenience of description, the above-mentioned devices are collectively referred to as a communication device. The network devices may include base stations, access points, and the like.

Fig. 1 is a block diagram of a radio frequency system according to an embodiment, and referring to fig. 1, in the embodiment, the radio frequency system includes a radio frequency transceiver 10, a power amplification module 100, a transceiver module 200, and a first receiving module 300.

The power amplification module 100 is connected to the radio frequency transceiver 10, and is configured to perform power amplification processing on a 4G or 5G standard preset low-frequency signal. The preset low-frequency signal of the 4G or 5G standard may be a radio-frequency signal of any low-frequency band in a 4G LTE signal and a 5G NR signal. The 4G LTE signal may include frequency bands such as B5, B8, B12, B13, B14, B17, B18, B19, B20, B26, and B28, and the 5G NR signal may include frequency bands such as N5, N8, N12, N13, N14, N17, N18, N19, N20, N26, and N28. For example, the preset low frequency signal may be a radio frequency signal in any one of the frequency bands N8, N26, N28, and the like. It should be noted that, in the 5G network, the frequency band used by 4G is used, only the identifier before the serial number is changed, and the plurality of low frequency bands of the low frequency signal are not limited to the above example. In the present embodiment, the radio frequency signal with the preset low frequency signal of N28(B28) band is taken as an example for explanation.

The transceiver module 200 may be understood as a package structure in which a plurality of devices are integrated. The transceiver module 200 is connected to the power amplifier module 100, the first antenna ANT1, and the second antenna ANT2, respectively. On a transmitting path, a preset low-frequency signal output by the power amplification module 100 is output to the first antenna ANT1 through the transceiver module 200, so as to implement transmission of the preset low-frequency signal. The receiving path specifically includes a through path 201 and a filtering path 202, the filtering path 202 may perform filtering processing on the transmitted preset low-frequency signal, and the transceiver module 200 is configured to receive the preset low-frequency signal received by the first antenna ANT1 and the second antenna ANT2, and perform filtering processing on the preset low-frequency signal received by the second antenna ANT 2. For example, when the preset low frequency signal is a radio frequency signal of the N28 frequency band, the preset low frequency signal received by the first antenna ANT1 may be directly transmitted to the first receiving module 300 for receiving processing, and the preset low frequency signal received by the second antenna ANT2 is firstly filtered in the transceiver module 200 to filter signals of other frequency bands other than the N28 frequency band, and then transmitted to the first receiving module 300 for receiving processing. Wherein the receiving process includes, but is not limited to, at least one of a low noise amplification process, a filtering process, and the like. The transceiver module 200 is further configured to support transmission processing on a 2G standard signal, where the transmission processing includes, but is not limited to, at least one of power amplification processing, filtering processing, and the like. Therefore, by integrating part of the processing function of the preset low-frequency signal into the packaged transceiver module 200, the transceiver module 200 can realize richer functions, and the overall integration level of the transceiver module 200 can be effectively improved.

The first receiving module 300 is respectively connected to the rf transceiver 10 and the transceiving module 200. The first receiving module 300 is configured to receive the preset low frequency signal from the first antenna ANT1 through the through path 201 to receive the preset low frequency signal received by the first antenna ANT1, and the first receiving module 300 is further configured to receive the preset low frequency signal from the second antenna ANT2 through the filtering path 202 to perform MIMO reception on the preset low frequency signal received by the second antenna ANT 2. That is, the first receiving module 300 may support a dual reception function of 2 × 2MIMO reception of the preset low frequency signal.

The first antenna ANT1 and the second antenna ANT2 can support transceiving of radio frequency signals of low, medium and high frequency bands of a 4G network and a 5G network. Wherein each branch antenna may be formed using any suitable type of antenna. For example, each branch antenna may include an antenna with a resonating element formed from the following antenna structure: at least one of an array antenna structure, a loop antenna structure, a patch antenna structure, a slot antenna structure, a helical antenna structure, a strip antenna, a monopole antenna, a dipole antenna, and the like. Different types of antennas may be used for different frequency bands and frequency band combinations. In the present embodiment, the types of the first antenna ANT1 and the second antenna ANT2 are not further limited.

In the present embodiment, the radio frequency system includes a radio frequency transceiver 10, a power amplification module 100, a transceiver module 200, and a first receiving module 300. The radio frequency transceiver 10, the power amplification module 100, the transceiver module 200, and the first antenna ANT1 may form a transmission path of a preset low frequency signal of 4G or 5G standard, and the transceiver module 200 and the first antenna ANT1 may form a transmission path of a signal of 2G standard. The first antenna ANT1, the transceiver module 200, and the first receiving module 300 may form a through path to support receiving of the preset low frequency signal, and the second antenna ANT2, the transceiver module 200, and the first receiving module 300 may form a filtering path having a filtering processing function to support MIMO receiving of the preset low frequency signal. Based on the transceiver module 200 integrated with the filtering function, the embodiment provides a radio frequency system with a higher integration level, so that the volume of the radio frequency system can be reduced, and the volume of the communication device can be further reduced. The radio frequency system of this embodiment can support the transmission of the preset low frequency signal and the downlink 2 × 2MIMO receiving function, and compared with a radio frequency system capable of supporting only one path of reception, the downlink rate can be doubled, the downlink coverage distance is doubled, and the channel capacity and the receiving performance of the radio frequency system can be doubled.

Fig. 2 is a second block diagram of the rf system according to an embodiment, and referring to fig. 2, in this embodiment, the first receiving module 300 may be an External Low Noise Amplifier (ela) that integrates a plurality of LNAs (Low Noise amplifiers) and a plurality of rf switches. Specifically, the first receiving module 300 may include a first low noise amplifying unit 310 and a second low noise amplifying unit 320. The first low-noise amplifying unit 310 is connected to the transceiver module 200, and is configured to perform low-noise amplification processing on the filtered preset low-frequency signal. The second low-noise amplifying unit 320 is also connected to the transceiver module 200, and is configured to perform low-noise amplification processing on the preset low-frequency signal. Each low noise amplifying unit may include a low noise amplifier and a radio frequency switch, and the radio frequency switch may be configured to turn on a radio frequency path between the low noise amplifier connected thereto and each filtering unit or filtering module.

With continued reference to fig. 2, IN one embodiment, the transceiver module 200 is configured with a first antenna port ANT for connecting to the first antenna ANT1, a first auxiliary input port AUX IN for connecting to the second antenna ANT2, a first transmission port TRX connected to the power amplification module 100, and a first auxiliary output port AUX OUT connected to the first receiving module 300.

The transceiver module 200 includes a first switching unit 210 and a first filtering unit 220. The first switch unit 210 is disposed in the through path, and the first switch unit 210 may include a first end and a second end, where the first end of the first switch unit 210 is connected to the first transmission port TRX, and the second end of the first switch unit 210 is connected to the first antenna port ANT. The first switch unit 210 is configured to select the preset low frequency signal after the transmission power amplification processing to be transmitted to the first antenna ANT1, and select the preset low frequency signal received by the first antenna ANT1 to be transmitted to the first receiving module 300. Specifically, when the first terminal and the second terminal of the first switch unit 210 are turned on, the preset low frequency signal after the power amplification process may be transmitted to the first antenna ANT1, and the preset low frequency signal received by the first antenna ANT1 may also be transmitted to the first receiving module 300. Optionally, an isolation device, such as a switch, a duplexer, or the like, may be further disposed on a path between the first transmission port TRX of the transceiver module 200 and the power amplification module 100 and the first receiving module 300 to isolate a transceiver path of a preset low-frequency signal.

The first filtering unit 220 is disposed IN a filtering path, the first filtering unit 220 is connected to the first auxiliary input port AUX IN and the first auxiliary output port AUX OUT, and the first filtering unit 220 is configured to filter the preset low-frequency signal received by the second antenna ANT 2. In this embodiment, the first filtering unit 220 on the MIMO receiving path is embedded in the transceiver module 200, so as to improve the integration level of the radio frequency system and reduce the cost. In addition, the MIMO receiving path is not provided with a switch, so that the link insertion loss on the MIMO receiving path can be reduced, and the MIMO receiving performance of the preset low-frequency signal is improved.

Fig. 3 is a third structural block diagram of an embodiment of a radio frequency system, and referring to fig. 3, IN this embodiment, the transceiver module 200 is further configured with a transmission input port 2G IN for receiving a 2G standard signal TX0a0 LB 1. The transceiver module 200 further includes a first power amplifying unit 230, where the first power amplifying unit 230 is configured to perform power amplification processing on a 2G standard signal from the transmission input port 2G IN, so as to improve the transmission power of the radio frequency signal. The input of the first power amplifying unit 230 is connected to the transmission input port 2 gin. The first switch unit 210 includes two first ends, and the two first ends of the first switch unit 210 are respectively connected to the output ends of the first transmission port TRX and the first power amplifying unit 230 in a one-to-one correspondence manner. Based on the above structure of the first switch unit 210, the first switch unit 210 may select to transmit a preset low-frequency signal of 4G or 5G standard through the contact 10, and the first switch unit 210 may also select to transmit a signal of 2G standard through the contact 15 to the first antenna port ANT for transmission.

With continued reference to fig. 3, in one embodiment, the radio frequency system further comprises a third filtering unit 510, wherein the third filtering unit 510 is configured with two first terminals and one second terminal. The power amplification module 100 is configured with a transmit port LB, IN particular a transmit port LB3, and the first receiving module 300 is configured with two first receive ports LB IN, IN particular LB1 IN0 and LB0 IN0, respectively, wherein one of the first receive ports LB1 IN0 is connected with the first auxiliary output port AUX OUT of the transceiver module 200. Two first ends of the third filtering unit 510 are respectively connected to the transmitting port LB3 of the power amplifying module 100 and the other first receiving port LB0 IN0 of the first receiving module 300, and a second end of the third filtering unit 510 is connected to the first transmission port TRX of the transceiving module 200. Based on the above structure, the same third filtering unit 510 may filter the received and transmitted signals of the same frequency band at different times, thereby reducing the number of filtering modules required in the radio frequency system and improving the integration of the radio frequency system.

Therein, with continued reference to fig. 3, the third filtering unit 510 may include a duplexer and a filter. Two first ends of the duplexer are respectively connected to the transmitting port LB3 of the power amplifying module 100 and the other first receiving port LB0 IN0 of the first receiving module 300, a second end of the duplexer is connected to one end of the filter, and the other end of the filter is connected to the first transmission port TRX of the transceiver module 200. The power amplifying module 100, the duplexer, the filter, the transceiving module 200, and the first antenna ANT1 may form a transmitting path of a preset low frequency signal, and the first antenna ANT1, the transceiving module 200, the filter, the duplexer, and the first receiving module 300 may form a receiving path of a preset radio frequency signal, thereby implementing flexible transceiving of the preset low frequency signal.

Fig. 4 is a fourth structural block diagram of the radio frequency system according to an embodiment, referring to fig. 4, in this embodiment, the first receiving module 300 is further configured to receive a preset high-frequency signal supporting a 4G or 5G standard, and the radio frequency system further includes a second filtering unit 410 and a first combiner 420. The preset high-frequency signals of the 4G system may include frequency bands of B7, B30, B38, B40, B41, and the like, and the preset high-frequency signals of the 5G system may include frequency bands of N7, N30, N38, N40, N41, and the like. In the present embodiment, the radio frequency signal with the preset high frequency signal of N41(B41) band is taken as an example for explanation.

The second filtering unit 410 is connected to the first receiving module 300, and configured to perform filtering processing on the preset high-frequency signal received by the second antenna ANT2, and output the preset high-frequency signal after the filtering processing to the first receiving module 300. The filtering frequency band of the second filtering unit 410 corresponds to the frequency band of the preset high-frequency signal, that is, the second filtering unit 410 is configured to filter out signals other than the N41 frequency band. Two first ends of the first combiner 420 are respectively connected to the second filtering unit 410 and the first auxiliary input port AUX IN of the transceiver module 200 IN a one-to-one correspondence manner, and a second end of the first combiner 420 is connected to the second antenna ANT 2.

In this embodiment, the first receiving module 300 can support low-noise amplification processing on low-frequency and high-frequency radio frequency signals, and by providing the second filtering unit 410 and the first combiner 420, combining output of a radio frequency signal in any low-frequency band and a radio frequency signal in any high-frequency band can be achieved, so as to achieve carrier aggregation receiving on the radio frequency signals in the low-frequency and high-frequency bands, and improve receiving performance of the radio frequency system.

Further, with continued reference to fig. 4, the transceiver module 200 may be configured with two transmission input ports 2G IN, the two transmission input ports 2G IN are 2G HB IN and 2G LB IN respectively, the port 2G HB IN is used for transmitting high-frequency signals of 2G standard, and the port 2G LB IN is used for transmitting low-frequency signals of 2G standard. Accordingly, the transceiver module 200 includes two first power amplifying units 230, and the two transmission input ports 2 gin are respectively connected to the two first power amplifying units 230 IN a one-to-one correspondence manner. The first switching unit 210 includes three first terminals, and the three first terminals of the first switching unit 210 are respectively connected to the first transmission port TRX and the output terminals of the two first power amplifying units 230 in a one-to-one correspondence manner. Further, a filter may be connected between the first power amplifying unit 230 and the first end of the first switch to filter out clutter signals and improve a signal-to-noise ratio of the transmitted radio frequency signal.

In one embodiment, the power amplification module 100 is configured to perform power amplification processing on signals in multiple frequency bands, where the signals in multiple frequency bands include the preset low-frequency signal. In this embodiment, the power amplification module 100 may support power amplification processing of low, medium, and high frequency signals of a plurality of different frequency bands. The Power Amplifier Module 100 may be a multi-mode multi-band Power Amplifier (MMPA). The plurality of low-frequency signals comprise the preset low-frequency signal. The intermediate frequency signals can include frequency bands of B1, B2, B3, B4, B25, B34, B39 and B66 in 4G standard, and frequency bands of N1, N2, N3, N4, N25, N34, N39 and N66 in 5G standard.

Fig. 5 is a fifth structural block diagram of a radio frequency system according to an embodiment, and referring to fig. 5, in this embodiment, the power amplification module 100 is further configured to support power amplification processing on an intermediate frequency signal. The power amplification module 100 includes a second power amplification unit 110, a third power amplification unit 120, and a fourth power amplification unit 130. Each power amplification unit may include a power amplifier and a radio frequency switch. The second power amplifying unit 110 is configured to support power amplification processing on a plurality of low-frequency signals, and selectively output a signal of any amplified low-frequency band. The third power amplifying unit 120 is configured to support power amplification processing on the intermediate frequency signal, and selectively output a signal of any intermediate frequency band after the power amplification processing. The fourth power amplifying unit 130 is configured to support power amplification processing on the high-frequency signal, and may selectively output a signal of any amplified high-frequency band. Accordingly, the power amplification module 100 is configured with a plurality of the transmitting ports, which are respectively used for outputting low-frequency, intermediate-frequency and high-frequency radio frequency signals to be transmitted, so as to achieve the above output.

Accordingly, the transceiver module 200 is configured with a plurality of the first transmission ports TRX, which are respectively connected to the plurality of the transmission ports of the power amplification module 100 in a one-to-one correspondence manner, and each of the first transmission ports TRX is respectively used for transmitting a signal of a corresponding frequency band. The first switch unit 210 includes a plurality of first terminals, and the plurality of first terminals are respectively connected to the plurality of first transmission ports TRX of the transceiver module 200 and the output terminal of the first power amplifying unit 230 in a one-to-one correspondence manner. The first switch unit 210 is a Single Pole multiple Throw (SPnT) switch, where n is greater than or equal to the number of the third filter units 510. Illustratively, the first switching unit 210 may be an SP16T switch.

IN one embodiment, the first receiving module 300 is configured with a plurality of first receiving ports, which are LB IN, MB IN, and HB IN, respectively, and are distinguished by different reference numerals. The radio frequency system further comprises a plurality of the third filtering units 510. Two first ends of each third filtering unit 510 are respectively connected to one transmitting port of the power amplifying module 100 and one first receiving port LB IN of the first receiving module 300, second ends of the plurality of third filtering units 510 are respectively connected to the plurality of first transmission ports TRX of the transceiver module 200 IN a one-to-one correspondence manner, and each third filtering unit 510 is respectively configured to filter a signal IN a corresponding frequency band.

The first receiving ports may be arranged in pairs with the transmitting ports, that is, two first ends of one third filtering unit 510 may be respectively connected to one first receiving port of one transmitting port, and the first ends of the third filtering units 510 are respectively connected to different transmitting ports and first receiving ports. The third filtering units 510 are configured to perform filtering processing on the received radio frequency signal, and frequency bands of the low frequency signals output by the third filtering units 510 are different. Illustratively, the number of the third filtering units 510 may be the same as the number of frequency bands of the radio frequency signal capable of being transmitted. For example, if the signals of the multiple frequency bands include three rf signals of low frequency bands B26, B8, and B28A, the number of the third filtering units 510 is three, and the three third filtering units 510 may respectively output the three rf signals of low frequency bands B26, B8, and B28A.

With continued reference to fig. 5, in one embodiment, the first receiving module 300 is configured to support a main set reception and a main set MIMO reception of the preset low-frequency signal, and the radio frequency system further includes a second receiving module 600, a first switching module 700, and a fifth filtering unit 810.

The second receiving module 600 is respectively connected to the radio frequency transceiver 10, the third antenna ANT3, and the fourth antenna ANT4, and is configured to support diversity reception of the preset low frequency signal received by the third antenna ANT3, and support diversity MIMO reception of the preset low frequency signal received by the fourth antenna ANT 4. The first antenna ANT1, the second antenna ANT2, the third antenna ANT3 and the fourth antenna ANT4 are all capable of supporting the transmission and reception of radio frequency signals. Specifically, the second receiving module 600 may be configured to support low noise amplification processing on two paths of preset low frequency signals. The second receiving module 600 may also be an ela device, and the second receiving module 600 may have the same function and structure as the first receiving module 300, and the structure of the second receiving module 600 is not described herein again. The first receiving module 300 and the second receiving module 600 may cooperate together to implement four receiving processes on the preset low frequency signal, and further support a 4 × 4MIMO receiving function of the preset low frequency signal.

IN this embodiment, the first switch module 700 is configured with a second antenna port ANT for connecting to the third antenna ANT3, a second auxiliary input port AUX IN for connecting to the fourth antenna ANT4, a second transmission port RF and a second auxiliary output port AUX OUT respectively connected to the second receiving module 600. The first Switch Module 700 may be understood as an Antenna Switch Module (ASM) package. In which, the filtering function is integrated in the first switch module 700, so that the integration level of the first switch module 700 can be improved, and the functions of the first switch module 700 can be enriched, thereby providing a radio frequency system with a smaller volume.

The fifth filtering unit 810 is respectively connected to the second transmission port RF of the first switch module 700 and the second receiving module 600, and is configured to perform filtering processing on the preset low-frequency signal received by the third antenna ANT 3. That is, in the present embodiment, the radio frequency system includes a radio frequency transceiver 10, a power amplification module 100, a transceiver module 200, a first receiving module 300, and a second receiving module 600. The radio frequency transceiver 10, the power amplification module 100, the transceiver module 200, and the first antenna ANT1 may form a transmission path to implement transmission processing of a preset low frequency signal; the first antenna ANT1, the transceiver module 200, and the first receiving module 300 may form a first receiving path to support a main set receiving of a preset low frequency signal; the second antenna ANT2 and the first receiving module 300 may form a second receiving path to support a dominant set MIMO reception of a preset low frequency signal; the third antenna ANT3 and the second receiving module 600 may form a third receiving path to support diversity reception of the preset low frequency signal, and the fourth antenna ANT4 and the second receiving module 600 may form a fourth receiving path to support diversity MIMO reception of the preset low frequency signal. The radio frequency system provided by the embodiment of the application can support the functions of transmitting the preset low-frequency signal and receiving downlink 4 × 4MIMO, and compared with the radio frequency system which only can support low-frequency signal × 2MIMO reception in the related art, the downlink speed can be doubled, the downlink coverage distance is doubled, and the channel capacity and the receiving performance of the radio frequency system can be doubled.

Fig. 6 is a sixth block diagram of a radio frequency system according to an embodiment, referring to fig. 6, in this embodiment, the first switch module 700 includes a second switch unit 710 and a fourth filter unit 720. A first end of the second switch unit 710 is connected to the second transmission port RF, a second end of the second switch unit 710 is connected to the second antenna port ANT, and the second switch unit 710 is configured to selectively transmit the preset low frequency signal received by the third antenna ANT3 to the second receiving module 600. The fourth filtering unit 720 is respectively connected to the second auxiliary input port AUX IN and the second auxiliary output port AUX OUT, and the fourth filtering unit 720 is configured to perform filtering processing on the preset low-frequency signal received by the fourth antenna ANT 4.

In this embodiment, the fourth filtering unit 720 on the diversity MIMO receiving path is built in the first switch module 700, so that the integration level of the radio frequency system can be further improved, and the cost can be reduced. Further, based on the transceiver module 200 shown in fig. 7, no switch is disposed on the diversity MIMO receiving path, so that link insertion loss on the diversity MIMO receiving path can be reduced, and diversity MIMO receiving performance for a preset low-frequency signal can be improved.

With continuing reference to fig. 6, in this embodiment, the radio frequency system further includes a sixth filtering unit 910 and a second combiner 920. The sixth filtering unit 910 is connected to the second receiving module 600, and configured to perform filtering processing on a preset high-frequency signal received by the fourth antenna ANT4, and output the preset high-frequency signal after the filtering processing to the second receiving module 600. Two first ends of the second combiner 920 are respectively connected to the fourth filtering unit 720 and the second auxiliary input port AUX IN of the first switch module 700 IN a one-to-one correspondence manner, and a second end of the second combiner 920 is connected to the fourth antenna ANT 4. The second combiner 920 may separate a signal received by the fourth antenna ANT4 into two paths, where one path is transmitted to the fourth filtering unit 720 to output a preset low-frequency signal, and the other path is transmitted to the sixth filtering unit 910 to output a preset high-frequency signal, so as to implement carrier aggregation reception of the low-frequency and high-frequency signals.

Fig. 7 is a seventh structural block diagram of a radio frequency system according to an embodiment, and referring to fig. 7, in this embodiment, the second receiving module 600 is configured with a plurality of second input ports. The first switch module 700 is configured with a plurality of the second transmission ports RF, which are respectively connected with a plurality of the second input ports of the second receiving module 600 in a one-to-one correspondence. The second switch unit 710 includes a plurality of first terminals, and the plurality of first terminals of the second switch unit 710 are respectively connected to the plurality of second transmission ports RF of the first switch module 700 in a one-to-one correspondence manner. The second switch unit 710 may be a single-pole multi-throw switch. A first end of the fourth filtering unit 720 built IN the first switch module 700 is connected to the second auxiliary input port AUX IN2, and a second end of the fourth filtering unit 720 is connected to the second auxiliary output port AUX OUT.

Accordingly, the radio frequency system further includes a plurality of the fifth filtering units 810. Each of the fifth filtering units 810 is respectively connected to one of the second input ports of the second receiving module 600 and one of the second transmission ports of the first switching module 700 by RF, and each of the fifth filtering units 810 is respectively configured to transmit a signal in a corresponding frequency band. The frequency bands of the low-frequency signals output by the fifth filtering units 810 are different. Illustratively, the number of the fifth filtering units 810 is equal to or greater than the number of the low frequency signals. For example, the fifth filtering unit 810 may include three filters, and each filter may output low frequency signals of three frequency bands N8, N26, and N28A, respectively. Illustratively, the second switching unit 710 may be an SP6T switch. The fifth filtering unit 810 is respectively connected to the second receiving module 600 and the fourth antenna ANT4, and is configured to perform filtering processing on the preset low-frequency signal received by the fourth antenna ANT 4. The second receiving module 600 may perform low-noise amplification processing on the multiple low-frequency signals output by the first switching module 700, so as to implement diversity reception on the preset low-frequency signals. In addition, the second receiving module 600 may perform low noise amplification on the preset low frequency signal output by the fifth filtering unit 810 to implement diversity MIMO reception on the preset low frequency signal.

Based on the rf system as shown in fig. 7, the preset low frequency signal is an N28 frequency band signal as an example to explain the working principle:

and a transmitting link:

the transmission signal is output from the radio frequency transceiver 10, enters the low frequency power amplifier LB PA in the second power amplifying unit 110 through the port LB1 RFIN of the radio frequency line to the power amplifying module 100, is amplified by the low frequency power amplifier, and then is output to the SP5T #2 switch, and is output to the third filtering unit 510 through the port LB3, and then is output to the first antenna port ANT through the first switching unit 210, and is output to the first antenna ANT1 through the Path 01.

The primary set receives the PRX link:

the receiving signal is input from the first antenna ANT1, transmitted to the transceiver module 200 through the Path01, transmitted to the third filtering unit 510 through the first switch unit 210, filtered by the third filtering unit 510, transmitted to the second low noise amplifier unit 320 of the first receiving module 300, amplified by the low frequency low noise amplifier of the second low noise amplifier unit 320, and output to the radio frequency transceiver 10 through the port LB1 OUT.

Diversity reception DRX link:

the received signal is input from the third antenna ANT3, transmitted to the second antenna port ANT of the first switch module 700 through the Path05, transmitted to the fifth filter unit 810 through the second switch unit 710, filtered by the fifth filter unit 810, transmitted to the low-frequency low-noise amplifier LB1 LNA of the second receiving module 600 through the port N28A RX, amplified, and output to the radio frequency transceiver 10 through the port LB1 OUT.

Primary set MIMO receive (PRX MIMO) link:

a received signal is input from the second antenna ANT2 and is transmitted to the first combiner 420 through a Path 03; the low-frequency low-noise amplifier LB0 LNA of the first low-noise amplifying unit 310 in the first receiving module 300 is filtered by the Path04 and the first filtering unit 220, and is amplified and output to the radio frequency transceiver 10 through the port LB0 OUT.

Diversity MIMO receive (DRX MIMO) link:

a received signal is input from a fourth antenna ANT4 and is transmitted to the second combiner 920 through a Path 07; after being filtered by the fourth filtering unit 720, the signal is transmitted to the low-frequency low-noise amplifier LB0 LNA of the second receiving module 600, and after being amplified, the signal is output to the rf transceiver 10 through the port LB0 OUT.

As shown in fig. 7, the radio frequency system can implement a 4 × 4MIMO receiving function for a preset low frequency signal and a preset high frequency signal, a 2 × 2MIMO receiving function for a plurality of low frequency signals and medium and high frequency signals, or a carrier aggregation process for low, medium and high frequency signals, and can improve the receiving and transmitting performance of the radio frequency system. In addition, in the embodiment of the present application, the first filtering unit 220 for filtering the preset low-frequency signal is integrated in the transceiver module 200, and the fourth filtering unit 720 for filtering the preset low-frequency signal is integrated in the first switch module 700, so that the integration level of the radio frequency system can be improved, the occupied area is reduced, the packaging is only required once, the cost can be reduced, the port matching between each device can be realized in the transceiver module 200 and the first switch module 700, the port mismatch is reduced, and the communication performance of the radio frequency system can be further improved.

The embodiment of the application also provides communication equipment comprising the radio frequency system. By arranging the radio frequency system on the communication equipment, 4 multiplied by 4MIMO (multiple input multiple output) receiving of a preset low-frequency signal can be realized, and the throughput of the low-frequency signal can be improved in multiples under the condition of not increasing frequency spectrum resources and antenna transmitting power; the downloading rate can be improved to improve the user experience, and meanwhile, when the communication equipment is positioned at the edge of a cell, deep in a building, in an elevator and other weak signal environments, the communication equipment is received through 4 multiplied by 4MIMO, so that higher diversity gain and larger coverage distance are achieved; the device has high integration level, the area of the substrate occupied by each device in the radio frequency system is reduced, meanwhile, the layout and wiring can be simplified, and the cost is saved.

Fig. 8 is a block diagram of a communication device according to an embodiment, and with reference to fig. 8, a communication device is taken as a mobile phone 11 for example. In particular, the handset 11 may include a memory 21 (which optionally includes one or more computer-readable storage media), a processor 22, a peripheral interface 23, a radio frequency system, an input/output (I/O) subsystem 26. These components optionally communicate via one or more communication buses or signal lines 29. Those skilled in the art will appreciate that the handset 11 shown in fig. 8 is not intended to be limiting and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. The various components shown in fig. 8 are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application specific integrated circuits.

The memory 21 optionally includes high-speed random access memory, and also optionally includes non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Illustratively, the software components stored in memory 21 include an operating system 211, a communications module (or set of instructions) 212, a Global Positioning System (GPS) module (or set of instructions) 213, and the like.

The processor 22 and other control circuitry, such as control circuitry in a radio frequency system, may be used to control the operation of the handset 11. The processor 22 may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, and the like.

The processor 22 may be configured to implement a control algorithm that controls the use of the antenna in the handset 11. The processor 22 may also issue control commands for controlling switches in the radio frequency system, etc.

The I/O subsystem 26 couples input/output peripheral devices on the cell phone 11, such as a keypad and other input control devices, to the peripheral device interface 23. The I/O subsystem 26 optionally includes a touch screen, buttons, tone generators, accelerometers (motion sensors), ambient and other sensors, light emitting diodes and other status indicators, data ports, and the like. Illustratively, a user may control the operation of the handset 11 by supplying commands through the I/O subsystem 26, and may receive status information and other output from the handset 11 using the output resources of the I/O subsystem 26. For example, a user pressing button 261 may turn the phone on or off.

The radio frequency system may be the radio frequency system in any of the foregoing embodiments.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express a few embodiments of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the concept of the embodiments of the present application, several variations and modifications can be made, which all fall within the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the appended claims.

Claims

1. A radio frequency system, comprising:

a radio frequency transceiver;

2. The radio frequency system according to claim 1, wherein the transceiver module is configured with a first antenna port for connecting the first antenna, a first auxiliary input port for connecting the second antenna, a first transmission port connected to the power amplification module, and a first auxiliary output port connected to the first receiving module; wherein the transceiver module comprises:

the first switch unit is arranged in the through passage, a first end of the first switch unit is connected with the first transmission port, a second end of the first switch unit is connected with the first antenna port, and the first switch unit is used for selecting the preset low-frequency signal subjected to transmission power amplification processing to be transmitted to the first antenna and selecting the preset low-frequency signal received by the first antenna to be transmitted to the first receiving module;

the first filtering unit is arranged in the filtering path and is respectively connected with the first auxiliary input port and the first auxiliary output port, and the first filtering unit is used for filtering the preset low-frequency signal received by the second antenna.

3. The radio frequency system according to claim 2, wherein the transceiver module is further configured with a transmission input port for receiving 2G standard signals, the transceiver module further comprising:

the input end of the first power amplification unit is connected with the transmission input port;

the first switch unit comprises two first ends, and the two first ends of the first switch unit are respectively connected with the first transmission port and the output end of the first power amplification unit in a one-to-one correspondence manner.

4. The radio frequency system according to claim 3, wherein the first receiving module is further configured to receive a preset high-frequency signal supporting 4G or 5G standard, and the radio frequency system further includes:

the second filtering unit is connected with the first receiving module and used for filtering the preset high-frequency signal received by the second antenna and outputting the filtered preset high-frequency signal to the first receiving module;

and two first ends of the first combiner are respectively connected with the second filtering unit and the first auxiliary input port of the transceiver module in a one-to-one correspondence manner, and a second end of the first combiner is connected with the second antenna.

5. The radio frequency system according to claim 3, wherein the power amplification module is configured with a transmission port, the first receiving module is configured with two first receiving ports, one of the first receiving ports is connected with the first auxiliary output port of the transceiver module, the radio frequency system further comprising:

a third filtering unit, configured with two first ends and one second end, where the two first ends of the third filtering unit are respectively connected with the transmitting port of the power amplifying module and the other first receiving port of the first receiving module in a one-to-one correspondence manner, the second end of the third filtering unit is connected with the first transmitting port of the transceiver module, and the third filtering unit is configured to filter the preset low-frequency signal received and sent by the first antenna.

6. The radio frequency system according to claim 5, wherein the power amplification module is configured to perform power amplification on signals of multiple frequency bands, where the signals of multiple frequency bands include the preset low frequency signal, and the power amplification module is configured with a plurality of the transmission ports;

the transceiver module is configured with a plurality of first transmission ports, the plurality of first transmission ports are respectively connected with the plurality of transmitting ports of the power amplification module in a one-to-one correspondence manner, and each first transmission port is respectively used for transmitting a signal of a corresponding frequency band;

the first switch unit comprises a plurality of first ends, and the first ends are respectively connected with the first transmission ports of the transceiver module and the output end of the first power amplification unit in a one-to-one correspondence manner.

7. The radio frequency system according to claim 6, wherein the first receiving module is configured with a plurality of first input ports, the radio frequency system further comprising:

two first ends of each of the third filtering units are respectively connected to one of the transmitting ports of the power amplifying module and one of the first receiving ports of the first receiving module, second ends of the third filtering units are respectively connected to the first transmitting ports of the transceiver module in a one-to-one correspondence manner, and each of the third filtering units is respectively used for filtering a signal of a corresponding frequency band.

8. The radio frequency system according to any of claims 1 to 7, wherein the first receiving module is configured to support a dominant set reception and a dominant set MIMO reception of the low frequency signal, the radio frequency system further comprising:

the second receiving module is respectively connected with the radio frequency transceiver, the third antenna and the fourth antenna, and is used for supporting diversity reception of the preset low-frequency signal received by the third antenna and supporting diversity MIMO reception of the preset low-frequency signal received by the fourth antenna;

a first switch module configured with a second antenna port for connecting the third antenna, a second auxiliary input port for connecting the fourth antenna, a second transmission port, and a second auxiliary output port, the second transmission port and the second auxiliary output port being respectively connected with the second receiving module;

and the fifth filtering unit is respectively connected with the second transmission port of the first switch module and the second receiving module and is used for filtering the preset low-frequency signal received by the third antenna.

9. The radio frequency system of claim 8, wherein the first switching module comprises:

a second switch unit, a first end of which is connected to the second transmission port, a second end of which is connected to the second antenna port, and the second switch unit is configured to selectively transmit the preset low-frequency signal received by the third antenna to the second receiving module;

and the fourth filtering unit is respectively connected with the second auxiliary input port and the second auxiliary output port, and is used for filtering the preset low-frequency signal received by the fourth antenna.

10. The radio frequency system of claim 9, further comprising:

the sixth filtering unit is connected with the second receiving module and is used for filtering a preset high-frequency signal received by the fourth antenna and outputting the filtered preset high-frequency signal to the second receiving module;

and two first ends of the second combiner are respectively connected with the fourth filtering unit and the second auxiliary input port of the first switch module in a one-to-one correspondence manner, and a second end of the second combiner is connected with the fourth antenna.

11. The rf system according to claim 10, wherein the second receiving module is configured with a plurality of second input ports, the first switch module is configured with a plurality of second transmission ports, the plurality of second transmission ports are respectively connected to the plurality of second input ports of the second receiving module in a one-to-one correspondence, the second switch unit includes a plurality of first ends, and the plurality of first ends of the second switch unit are respectively connected to the plurality of second transmission ports of the first switch module in a one-to-one correspondence; the radio frequency system further comprises:

each of the fifth filtering units is connected to one of the second input ports of the second receiving module and one of the second transmission ports of the first switch module, and each of the fifth filtering units is configured to transmit a signal in a corresponding frequency band.

12. A communication device comprising a radio frequency system according to any of claims 1-11.