CN109802693B - Electronic equipment and radio frequency signal transceiving method - Google Patents
Electronic equipment and radio frequency signal transceiving method Download PDFInfo
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- CN109802693B CN109802693B CN201910245088.6A CN201910245088A CN109802693B CN 109802693 B CN109802693 B CN 109802693B CN 201910245088 A CN201910245088 A CN 201910245088A CN 109802693 B CN109802693 B CN 109802693B
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Abstract
The embodiment of the application discloses electronic equipment and a radio frequency signal receiving and transmitting method. The electronic device includes: a first antenna; a second antenna; a transceiver, wherein the first antenna is connected with the transceiver by a transmit radio frequency path and connected with the transceiver by a receive radio frequency path; the first antenna can obtain the radio frequency signal of an uplink frequency band through the transmitting radio frequency channel and radiate the radio frequency signal, and meanwhile, the first antenna can receive the radio frequency signal of a downlink frequency band and send the radio frequency signal to the transceiver through the receiving radio frequency channel; and if the first antenna receives the radio frequency signal of the downlink frequency band and sends the radio frequency signal to the transceiver through the receiving radio frequency channel to meet the interference condition, the second antenna is connected with the transceiver through the auxiliary radio frequency channel to suppress interference.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to an electronic device and a method for receiving and transmitting radio frequency signals.
Background
In Frequency Division Duplexing (FDD), one antenna is generally used as both a transmission antenna and a reception antenna, but the transmission Frequency of the transmission antenna and the reception Frequency of the reception antenna are different. However, the conventional electronic device has a problem that the transmission signal interferes with the reception signal, which causes a decrease in reception performance such as a low reception sensitivity of the electronic device.
Disclosure of Invention
In view of the above, embodiments of the present application are intended to provide an electronic device and a method for transceiving radio frequency signals.
The technical scheme of the application is realized as follows: an electronic device, comprising:
a first antenna;
a second antenna;
a transceiver, wherein the first antenna is connected with the transceiver by a transmit radio frequency path and connected with the transceiver by a receive radio frequency path; the first antenna can obtain the radio frequency signal of an uplink frequency band through the transmitting radio frequency channel and radiate the radio frequency signal, and meanwhile, the first antenna can receive the radio frequency signal of a downlink frequency band and send the radio frequency signal to the transceiver through the receiving radio frequency channel;
and if the first antenna receives the radio frequency signal of the downlink frequency band and sends the radio frequency signal to the transceiver through the receiving radio frequency channel to meet the interference condition, the second antenna is connected with the transceiver through the auxiliary radio frequency channel to suppress interference.
Based on the above scheme, the first antenna receiving the radio frequency signal in the downlink frequency band and sending the radio frequency signal to the transceiver through the receiving radio frequency path to satisfy the interference condition includes at least one of the following:
the first antenna can obtain that the transmission power of the radio frequency signal of the uplink frequency band is greater than a transmission threshold value through the transmission radio frequency channel;
the first antenna can simultaneously receive radio frequency signals of at least two different frequency bands.
Based on the above scheme, the connecting the second antenna with the transceiver through the auxiliary rf path to suppress interference includes:
transmitting a radio frequency signal which can be received by the first antenna in a downlink frequency band to the transceiver through the auxiliary radio frequency path by controlling a single-pole double-throw switch;
the single end of the single-pole double-throw switch is connected with the transceiver, and the double ends of the single-pole double-throw switch are respectively connected with the receiving radio frequency path and the auxiliary radio frequency path.
Based on the above scheme, the connecting the second antenna with the transceiver through the auxiliary rf path to suppress interference includes:
transmitting the radio frequency signal of the uplink frequency band transmitted by the transceiver to the second antenna through the auxiliary radio frequency path by controlling a single-pole double-throw switch, and radiating the radio frequency signal of the uplink frequency band by the second antenna;
wherein, a single end of the single-pole double-throw switch is connected with the transceiver, and double ends of the single-pole double-throw switch are respectively connected with the transmitting radio frequency path and the auxiliary radio frequency path.
Based on the above scheme, the electronic device further includes:
the duplexer includes:
an antenna port connected to the first antenna;
the transmitting port is connected with the antenna port and the transmitting radio frequency path, and is used for receiving the radio frequency signal of the uplink frequency band transmitted by the transmitter from the transmitting radio frequency path and transmitting the radio frequency signal to the first antenna through the antenna port;
and the receiving port is connected with the antenna port and the receiving radio frequency path and is used for transmitting the radio frequency signals of the downlink frequency band received by the first antenna from the antenna port to the transceiver through the receiving radio frequency path.
Based on the above scheme, the electronic device further includes:
and the filter is positioned on the auxiliary radio frequency channel and used for filtering the radio frequency signals of the uplink frequency band or the radio frequency signals of the downlink frequency band transmitted by using the auxiliary radio frequency channel.
Based on the above scheme, the electronic device further includes:
and the processing module is connected with the single-pole double-throw switch and used for receiving the radio frequency signals of the downlink frequency band by the first antenna, sending the radio frequency signals to the transceiver through the receiving radio frequency channel to meet interference conditions, and controlling the single-pole double-throw switch to conduct the transceiver and the auxiliary radio frequency channel.
Based on the above scheme, the processing module is further configured to determine inter-modulation signals of the uplink frequency band and the downlink frequency band according to the signal parameter of the radio frequency signal of the uplink frequency band and the signal parameter of the radio frequency signal of the downlink frequency band; determining that the interference condition is satisfied.
A method of transceiving radio frequency signals, comprising:
determining whether a downlink frequency band radio frequency signal received by a first antenna meets an interference condition or not and is transmitted to a receiver through a receiving radio frequency path, wherein the first antenna can be connected with a transceiver through a transmitting radio frequency path and is connected with the transceiver through a receiving radio frequency path;
and if the interference condition is met, controlling the second antenna to be connected with the transceiver through the auxiliary radio frequency channel so as to suppress the interference.
Based on the above scheme, the following steps are included in the following steps that the radio frequency signal of the downlink frequency band received by the first antenna and transmitted to the receiver through the receiving radio frequency path to satisfy the interference condition:
the first antenna can obtain that the transmission power of the radio frequency signal of the uplink frequency band is greater than a transmission threshold value through the transmission radio frequency channel;
the first antenna can simultaneously receive radio frequency signals of at least two different frequency bands.
Forming the transmit radio frequency path between the first antenna and the transceiver;
and the receiving port and the transceiver form the receiving radio frequency channel.
The electronic equipment provided by the embodiment of the application is provided with a first antenna and a second antenna; the first antenna is connected with the transceiver through a transmitting radio frequency path and a receiving radio frequency path respectively, and if the first antenna receives a radio frequency signal of a downlink frequency band and sends the radio frequency signal to the transceiver through the receiving radio frequency path to meet interference conditions; the second antenna can be automatically utilized to be connected to the transceiver through the auxiliary radio frequency channel, and the auxiliary radio frequency channel is utilized to share the transmission of the radio frequency signals of the uplink frequency band or the downlink frequency band of the first antenna, so that the isolated transmission of the radio frequency signals of the uplink frequency band and the downlink frequency band is realized, the phenomenon of mutual interference caused by the use of the same antenna for receiving and transmitting is reduced, the receiving sensitivity of the transceiver to the radio frequency signals of the downlink frequency band is at least improved, and the communication quality of the electronic equipment is improved.
Drawings
Fig. 1 is a schematic structural diagram of a first electronic device according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a second electronic device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a third electronic device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a fourth electronic device provided in the embodiment of the present application;
fig. 5 is a schematic flowchart of a radio frequency signal transceiving method according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a related art electronic device;
fig. 7 is a schematic structural diagram of a fifth electronic device according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a sixth electronic device according to an embodiment of the present application.
Detailed Description
The technical solution of the present application is further described in detail with reference to the drawings and specific embodiments of the specification.
As shown in fig. 1, the present embodiment provides an electronic device, including:
a first antenna 101;
a second antenna 102;
a transceiver 103, wherein the first antenna 101 is connected to the transceiver 103 via a transmit rf path 105 and to the transceiver 103 via a receive rf path 106; the first antenna 101 can obtain a radio frequency signal of an uplink frequency band through the transmission radio frequency path 105 and radiate the radio frequency signal, and meanwhile, the first antenna 101 can receive a radio frequency signal of a downlink frequency band and send the radio frequency signal to the transceiver 103 through the reception radio frequency path 106;
if the first antenna 101 receives a radio frequency signal in a downlink frequency band and sends the radio frequency signal to the transceiver 103 through the receiving radio frequency path 106 to satisfy an interference condition, the second antenna 102 is connected to the transceiver 103 through the auxiliary radio frequency path 104 to suppress interference.
In this embodiment, the electronic device includes at least two antennas, which are the first antenna 101 and the second antenna 102; the radiators of the first antenna 101 and the second antenna 102 are different, and the radiators are parts having signal radiation, such as metal strips, metal sheets, metal wires, and the like, which transmit radio frequency signals and receive radio frequency signals.
In this embodiment, the electronic device comprises a transceiver 103, the transceiver 103 being capable of receiving radio frequency signals and transmitting radio frequency signals
In this embodiment, the first antenna 101 is provided with a transmitting rf path 105 and a receiving rf path 106 in front of the transceiver 103. The transmit rf path 105 may be used for transmission of rf signals in the uplink frequency band within the electronic device. The radio frequency path 106 is received.
In this embodiment, the electronic device further comprises a second antenna 102; the second antenna 102 is connected to the transceiver 103 via an auxiliary rf path 104. The second antenna 102 may be connected to the transceiver 103 only through the auxiliary rf path 104. The auxiliary rf path 104 may be used for transmitting the rf signal in the uplink frequency band or transmitting the rf signal in the downlink frequency band in different time periods.
In this embodiment, the electronic device may enable the second antenna 102 to be conducted through the connection between the auxiliary rf path 104 when the interference condition is satisfied according to the interference condition of the rf signal transmitted between the first antenna 101 and the transceiver 103, so that the second antenna 102 can perform the transmission of the rf signal in the uplink frequency band or the downlink frequency band through the auxiliary rf path 104 and the transceiver 103. Thus, the second antenna 102 can at least share the transmission of the radio frequency signal of one frequency band (for example, the uplink frequency band or the downlink frequency band) of the first antenna 101, so as to reduce mutual interference caused by the single first antenna 101 being simultaneously used for signal transmission of the uplink frequency band and/or the downlink frequency band, so as to at least partially reduce the interference, thereby improving the receiving and transmitting quality of the radio frequency signal of the electronic device.
In some embodiments, the first antenna 101 receives a radio frequency signal in a downlink frequency band and sends the radio frequency signal to the transceiver 103 through the receiving radio frequency path 106, where the condition of meeting the interference condition includes at least one of:
the first antenna 101 can obtain that the transmission power of the radio frequency signal of the uplink frequency band is greater than the transmission threshold through the transmission radio frequency path 105;
the first antenna 101 is capable of receiving radio frequency signals of at least two different frequency bands simultaneously.
If the first antenna 101 is ready to receive the radio frequency signal in the downlink frequency band at any time, if the signal power of the radio frequency signal in the uplink frequency band is large at this time, due to the problem of power leakage, the greater the transmission power of the radio frequency signal in the uplink frequency band, the higher the transmission power is leaked to the reception radio frequency path 106, so that the signal power of the radio frequency signal in the uplink frequency band is mixed in the radio frequency signal in the downlink frequency band received by the transceiver 103, and therefore, the reception of the downlink signal is interfered, and the reception sensitivity of the transceiver 103 to the radio frequency signal in the downlink frequency band is reduced, and the reception quality of the downlink signal in the downlink frequency band is also reduced. In view of this, in this embodiment, if the transmission power of the radio frequency signal in the uplink frequency band is greater than the transmission threshold, the auxiliary radio frequency path 104 is turned on if the interference condition is satisfied, so that the second antenna 102 can be switched to the working state, and the two different antennas, i.e., the first antenna 101 and the second antenna 102, share the reception of the radio frequency signal in the uplink frequency band and the radio frequency signal in the downlink frequency band, thereby suppressing the mutual interference phenomenon caused by the transmission and reception based on the same antenna.
The transmission threshold may be flexibly set according to the sensitivity of the transceiver 103 included in the electronic device, or may be flexibly set according to the requirement of the electronic device for the signal reception quality.
In some embodiments, the first antenna 101 operates in a carrier aggregation mode, and is capable of receiving radio frequency signals of multiple downlink frequency bands of different frequencies at the same time. At this time, since the receiver itself has high complexity of downlink reception, if the radio frequency signal in the uplink frequency band leaks due to the reception and transmission by the same antenna, the reception of the radio frequency signal in the downlink frequency band is further complicated, which further reduces the sensitivity of the transceiver 103 to the radio frequency signal in the downlink frequency band. In view of this, in the present embodiment, when the first antenna 101 operates to receive radio frequency signals in two different frequency bands, or the antenna parameters are adjusted to receive radio frequency signals in two different frequency bands, it is determined that the aforementioned interference condition is satisfied.
In still other embodiments, the electronic device further comprises:
the detection module is used for detecting the receiving intensity of the receiving signal of the downlink frequency band; and/or detecting the intensity of a mixed signal of a radio frequency signal of the uplink signal mixed in the radio frequency signal in the downlink frequency band, and determining that the interference condition is met when the receiving intensity is lower than a receiving intensity threshold value or when the intensity of the mixed signal is greater than the mixed signal intensity threshold value.
In short, there are various ways to satisfy the interference condition, and the specific implementation is not limited to any of the above.
In some embodiments, as shown in fig. 2 to 4, the connecting the second antenna 102 with the transceiver 103 through the auxiliary rf path 104 to suppress interference includes:
transmitting a radio frequency signal capable of receiving a downlink frequency band by the first antenna 101 to the transceiver 103 through the auxiliary radio frequency path 104 by controlling the single-pole double-throw switch 107;
wherein, a single end of the single-pole double-throw switch 107 is connected to the transceiver 103, and two ends of the single-pole double-throw switch 107 are respectively connected to the receiving rf path 106 and the auxiliary rf path 104.
The single-pole double-throw switch 107 in this embodiment may include various electronic components having an alternative function, or a combination of electronic components.
In this embodiment, the single-pole double-throw switch 107 may include: a single-ended, which may be fixedly connected to transceiver 103; the double end can be conducted in one of two radio frequency paths corresponding to the first antenna 101 and one of the auxiliary radio frequency paths 104 connected to the second antenna 102. The two rf paths corresponding to the first antenna 101 include: the aforementioned transmit rf path 105 and receive rf path 106.
In this way, the single-pole double-throw switch 107 simply selects the connection path between the first antenna 101 and the second antenna 102 and the transceiver 103 by switching the two terminals thereof between different terminals.
In this embodiment, the two terminals of the single-pole double-throw switch 107 are switched between the receiving rf path 106 of the first antenna 101 and the auxiliary rf path 104, and if the two terminals of the single-pole double-sub switch are connected to the receiving rf path 106 of the first antenna 101, the first antenna 101 establishes an rf connection with the transceiver 103 through the receiving rf path 106, and the downlink frequency band rf signal received by the first antenna 101 can be transmitted to the transceiver 103 through the receiving rf. If the double ends of the single-pole double-throw switch 107 are connected to the auxiliary rf path 104, the second antenna 102 may transmit the received downlink rf signal to the transceiver 103, the downlink rf signal received by the first antenna 101 may no longer be transmitted to the transceiver 103, and the first antenna 101 is still connected to the transceiver 103 through the transmission rf path 105, at this time, the first antenna 101 is mainly used for transmitting the uplink rf signal. Therefore, at this time, the electronic device realizes that the first antenna 101 is used for transmitting the radio frequency signal, and the second antenna 102 is used for receiving the radio frequency signal, so that the antenna isolation of the transmitted signal and the received signal is realized, the interference phenomenon caused by the simultaneous transmission of the uplink frequency band and the reception of the downlink frequency band by using the same antenna is reduced, and the signal transmission quality is improved.
In some embodiments, the connecting the second antenna 102 with the transceiver 103 through the auxiliary rf path 104 to suppress interference comprises:
transmitting the radio frequency signal of the uplink frequency band transmitted by the transceiver 103 to the second antenna 102 through the auxiliary radio frequency path 104 by controlling a single-pole double-throw switch 107, and radiating the radio frequency signal of the uplink frequency band by the second antenna 102;
wherein, a single end of the single-pole double-throw switch 107 is connected with the transceiver 103, and double ends of the single-pole double-throw switch 107 are respectively connected with the transmitting radio frequency path 105 and the auxiliary radio frequency path 104.
In this embodiment, the double-ended of the single-pole double-throw switch 107 can be alternatively connected between the transmission rf path 105 and the auxiliary rf path 104. In this way, if the double-end of the single-pole double-throw switch 107 is connected to the transmission rf path 105 of the first antenna 101, a connection is established between the first antenna 101 and the transceiver 103, and the transceiver 103 radiates the rf signal in the uplink frequency band through the first antenna 101. If the double ends of the single-pole double-throw switch are connected with the auxiliary radio frequency path 104 of the second antenna 102, the first antenna 101 is still connected with the transceiver 103 through the receiving radio frequency path 106, and the radio frequency signal receiving of the downlink frequency band is still realized by the first antenna 101; and the transmission of the radio frequency signal of the uplink frequency band is realized by the second centroid, so that the separated antenna isolation transmission of the radio frequency signal of the uplink frequency band and the radio frequency signal of the downlink frequency band is realized, the mutual interference phenomenon is reduced, and the signal receiving and transmitting quality is improved.
In summary, as shown in fig. 2, the double end of the single-pole double-throw switch 107 can be alternatively conducted with one of the two rf paths corresponding to the first antenna and the auxiliary rf path 104. Specifically, as shown in fig. 3, the double end of the single-pole double-throw switch 107 can selectively turn on the receiving rf path 106 or the auxiliary rf path 104; alternatively, as shown in fig. 4, the double-ended of the single-pole double-throw switch 107 can selectively turn on one of the transmission rf path 105 and the auxiliary rf path 104.
A power amplifier is disposed on the transmission rf path 105, and is configured to amplify the signal power of the rf signal in the uplink frequency band provided by the transceiver 103.
In some embodiments, as shown in fig. 2 to 4, the electronic device further includes:
the duplexer 108 includes:
an antenna port connected to the first antenna 101;
a transmitting port, connected to the antenna port and the transmitting rf path 105, for receiving the rf signal in the uplink frequency band transmitted by the transmitter from the transmitting rf path 105, and transmitting the rf signal to the first antenna 101 through the antenna port;
and a receiving port, connected to the antenna port and the receiving rf path 106, configured to transmit the downlink rf signal received by the first antenna 101 from the antenna port to the transceiver 103 through the receiving rf path 106.
In this embodiment, the duplexer 108 is a device capable of processing the radio frequency signal in the uplink frequency band and the radio frequency signal in the downlink frequency band simultaneously. In this embodiment, the duplexer 108 includes: an antenna port, which is directly used for connecting with an antenna, in this embodiment, the antenna port of the duplexer 108 is connected with the first antenna 101.
The duplexer 108 is further provided with a receiving port and a transmitting port on the side connected to the transceiver 103. The receiving port is connected to the antenna port and to the receiving rf path 106, and the transmitting port is connected to the antenna port and to the transmitting rf path 105, so that the rf signals transmitted and received by the first antenna 101 can be separated by the duplexer 108. However, although the duplexer 108 is a single device, it can transmit and receive the radio frequency signal in the uplink frequency band and the radio frequency signal in the downlink frequency band, if the transmission power of the radio frequency signal is too large or the reception environment of the radio frequency signal is complicated (for example, the first antenna 101 receives the radio frequency signals in the multiple downlink frequency bands at the same time), the duplexer 108 of the single device may cause the radio frequency signal in the uplink frequency band to be reflected and receive the radio frequency path 106 due to the separation limitation of the connection structure of the device, so that at least the reception of the radio frequency signal in the downlink frequency band of the transceiver 103 is negatively affected.
In some embodiments, the electronic device further comprises:
a filter 109, located on the auxiliary rf path 104, and configured to filter the uplink rf signal or the downlink rf signal transmitted by using the auxiliary rf path 104.
In this embodiment, the filter 109 filters the signal frequency of the filter circuit, so as to reduce and filter out part of the interference signal.
In some embodiments, the filter is disposed on the auxiliary rf path 104, and if the auxiliary rf path 104 is used for transmitting the rf signal in the uplink frequency band, the filter is a transmission filter, and the transmission filter can filter spurious signals such as harmonic signals in the transmitted rf signal in the uplink frequency band, so as to reduce transmission interference.
In other embodiments, the filter 109 is disposed on the auxiliary rf path 104, and if the auxiliary rf path 104 is used for a section of the rf signal in the downlink frequency band, the filter 109 is a receiving filter. The receiving filter can be used for filtering out the interference of the out-of-band signals outside the downlink frequency band to the radio frequency signals of the specified downlink frequency band, thereby improving the receiving quality of the radio frequency signals.
In some embodiments, the electronic device further comprises:
and the processing module is connected with the single-pole double-throw switch 107, and is configured to receive a radio frequency signal in a downlink frequency band by the first antenna 101, send the radio frequency signal to the transceiver 103 through the radio frequency receiving path 106, and control the single-pole double-throw switch 107 to turn on the transceiver 103 and the auxiliary radio frequency path 104.
In this embodiment, the processing module can be various devices with computing power and/or information processing power, for example, the processing module includes but is not limited to a central processing unit, a microprocessor, a digital signal processor, a programmable array or an application processor.
The processing module is connected to the single-pole double-throw switch 107, and can control a radio frequency path conducted by two ends of the single-pole double-throw switch 107.
The processing module may control the single-pole double-throw switch 107 to turn on the transceiver 103 and the auxiliary rf path 104 according to whether the interference condition is satisfied, and specifically may include:
if the interference condition is met, controlling the two ends of the single-pole double-throw switch 107 to disconnect the transmission radio frequency path 105 and to connect the auxiliary radio frequency path 104, so that the second antenna 102 can transmit radio frequency signals of an uplink frequency band;
and/or the presence of a gas in the gas,
if the interference condition is met, controlling the two ends of the single-pole double-throw switch 107 to disconnect the radio frequency receiving channel 106 and to connect the auxiliary radio frequency channel so that the second antenna 102 can receive radio frequency signals of a downlink frequency band.
In some embodiments, the processing module is further configured to determine intermodulation signals of the uplink frequency band and the downlink frequency band according to a signal parameter of the radio frequency signal of the uplink frequency band and a signal parameter of the radio frequency signal of the downlink frequency band; and determining that the interference condition is met according to whether the signal frequency of the intermodulation signal is overlapped with the uplink frequency band and/or the downlink frequency band.
In some embodiments, the method further comprises: when the interference condition is met, controlling whether the single-pole double-throw switch 107 conducts the transceiver 103 and the auxiliary radio frequency path 104.
For example, the internal processing module of the electronic device calculates the intermodulation signals of the uplink frequency band and the downlink frequency band. When more than two different frequency signals act on a nonlinear circuit, the two different frequency signals are mutually modulated to generate a new frequency signal which is the intermodulation signal and output. If the frequency of the intermodulation signal happens to fall within the operating channel bandwidth of the receiver (i.e., the uplink frequency band or the downlink frequency band), interference to the receiver is formed, and the interference is intermodulation interference.
As shown in fig. 5, the present embodiment provides a method for transceiving a radio frequency signal, including:
step S110: determining whether a downlink frequency band radio frequency signal received by a first antenna meets an interference condition or not and is transmitted to a receiver through a receiving radio frequency path, wherein the first antenna can be connected with a transceiver through a transmitting radio frequency path and is connected with the transceiver through a receiving radio frequency path;
step S120: and if the interference condition is met, controlling the second antenna to be connected with the transceiver through the auxiliary radio frequency channel so as to suppress the interference.
In this embodiment, the radio frequency signal transceiving method may be applied to the electronic device, and if the first antenna receives a radio frequency signal in a downlink frequency band and sends the radio frequency signal to the transceiver through the receiving radio frequency path to satisfy an interference condition, it is necessary to control a second antenna in the electronic device to be connected to the transceiver through an auxiliary radio frequency path to suppress interference, so as to at least increase a receiving sensitivity of the transceiver to the radio frequency signal in the downlink frequency band through the interference suppression, and improve a receiving quality of the radio frequency signal in the downlink frequency band.
In some embodiments, the first antenna receives the radio frequency signal in the downlink frequency band and transmits the radio frequency signal to the receiver through the receiving radio frequency path, wherein the condition of meeting the interference condition includes at least one of the following:
the first antenna can obtain that the transmission power of the radio frequency signal of the uplink frequency band is greater than a transmission threshold value through the transmission radio frequency channel;
the first antenna can simultaneously receive radio frequency signals of at least two different frequency bands.
Further, the step S120 may include:
if the interference condition is met, controlling the double ends of the single-pole double-throw switch to disconnect a transmitting radio frequency channel of the first antenna and to connect the auxiliary radio frequency channel; therefore, the transceiver of the electronic device receives the radio frequency signal of the downlink frequency band through the first antenna and the receiving radio frequency channel, and the transceiver also transmits the radio frequency signal of the uplink frequency band through the second antenna and the auxiliary radio frequency channel.
Still further, the step S120 may include:
and if the interference condition is met, controlling the double ends of the single-pole double-throw switch to disconnect the receiving radio frequency channel of the first antenna and to connect the auxiliary radio frequency channel, so that a transceiver of the electronic equipment transmits the radio frequency signal of the uplink frequency band through the first antenna and the transmitting radio frequency channel, and the transceiver also receives the radio frequency signal of the downlink frequency band through the second antenna and the auxiliary radio frequency channel.
In some embodiments, the method further comprises:
and filtering the radio frequency signal of the uplink frequency band transmitted through the auxiliary radio frequency channel by using a filter, or filtering the radio frequency signal of the downlink frequency band transmitted through the auxiliary radio frequency channel.
Two specific examples are provided below in connection with any of the embodiments described above:
example 1:
in the electronic device shown in fig. 6, a duplexer is used at the front end of the FDD rf architecture, the transceiver transmits a signal with frequency f (TX), the signal is transmitted to the TX port of the duplexer to the ANT port through a path 1 and then transmitted to the antenna through a path 2 for transmission, and the signal with frequency f (RX) received by the antenna passes through a path 3 to the ANT port of the duplexer and then to the RX port, and then is transmitted to the transceiver through a path 4 for demodulation. Since the isolation of the duplexer itself cannot be infinite, part of the energy of the f (tx) signal leaks to the RX port and enters the transceiver through the path 4. At this time, signals of two frequencies f (tx) and f (RX) exist on the path 4, and assuming that the power of f (tx) on the path is 25dBm, and the duplex isolation degree is 55dBm, the power leaked to the RX port is 25-55-30 dBm, and the lowest sensitivity of the received external signal can reach-95 dBm (LTE, 10MHz), so that the receiver has an out-of-band large interference signal, which degrades the receiving performance of the receiver. If an intra-band non-contiguous CA condition is encountered. The receiving path 3 receives two signal sources F (Rx1), F (Rx2) from the antenna, and the path 4 simultaneously generates three signals F (tx), F (Rx1), and F (Rx2), and after passing through the amplifier in the receiver, intermodulation signals are generated, such as F (tx) ═ 1905MHz, F (Rx1) ═ 1965MHz, and F (Rx2) ═ 1935MHz, and after passing through the amplifier, 2 × F (Rx2) — (tx) — F (tx) — 1935 — 1905 ═ 1965MHz are generated, which is the same frequency as F (Rx1), thereby causing the sensitivity of F (Rx1) to deteriorate.
In view of this, as shown in fig. 7, the present example provides an electronic apparatus including:
The antenna 2 is connected to the power amplifier and to the transceiver via path 6 and pin 2 of the switch. A Receive (RX) filter is placed on path 6; the 3 pin of the switch is connected to the transceiver through path 5. Here, the power amplifier is abbreviated as a power amplifier.
The additional switch on the receiving path can be a single-pole double-throw switch, the common terminal 3 pin of the switch is connected to the receiving port of the transceiver, the pin 1 of the switch is connected to the RX port of the duplexer, and the pin 2 of the switch is connected to another antenna. When the transmission power f (tx) is small, or the antenna 1, the path 3 and the path 4 are used to receive the rf signals in the downlink frequency band.
When the transmitting power f (tx) is large or a complex communication mode such as Carrier Aggregation (CA) occurs to deteriorate the receiving sensitivity, the switch is switched to pin 2, at this time, the antenna 2 is used for receiving signals, the signals reach the transceiver through the path 6 and the path 5, the transmitting signals still pass through the duplexer from the path 1, and the path 2 is transmitted from the original antenna 1; thereby reducing interference of the transmitted signal with the received signal.
In summary, in the electronic device provided in this example, a switch is added to the receiving rf path, and when possible interference occurs in the receiver, the transmitting rf path is isolated by switching the switch, so as to improve the receiving sensitivity.
Example 2:
as shown in fig. 8, the present example provides another electronic device including:
The antenna 2 is connected to the power amplifier and to the transceiver via path 6 and pin 2 of the switch. A Transmit (TX) filter is also provided on path 6. The 3 pin of the switch is connected to the transceiver through path 5.
Here, the power amplifier is abbreviated as a power amplifier.
A single-pole double-throw switch is added between the power amplifier and the duplexer, a pin 3 of the common end of the switch is connected to an output port of the power amplifier, a pin 1 of the switch is connected to a Transmitting (TX) port of the duplexer, and a pin 2 of the switch is connected to the other antenna.
When the transmission power F (Tx) is small, or in a non-CA operation mode, the switch is switched to pin 1, and a normal communication link is adopted.
When the transmitting power F (Tx) is larger, or the receiving sensitivity is deteriorated due to the occurrence of complex communication modes such as CA and the like, the switch is switched to pin 2, and at the moment, the signal reaches the antenna 2 through a path 5 and a path 6, and the signal is transmitted by adopting the antenna 2; while the received signal still enters the transceiver from antenna 1 via path 1 and the duplexer, path 4. Thereby reducing interference of the transmitted signal with the received signal.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
In summary, in the electronic device provided in this example, a switch is added to the transmission rf path, and when possible interference occurs in the receiver, the switch is switched to isolate the reception rf path, thereby improving the reception sensitivity.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one processing module, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An electronic device, comprising:
a first antenna;
a second antenna;
a transceiver, wherein the first antenna is connected with the transceiver by a transmit radio frequency path and connected with the transceiver by a receive radio frequency path; the first antenna can obtain the radio frequency signal of an uplink frequency band through the transmitting radio frequency channel and radiate the radio frequency signal, and meanwhile, the first antenna can receive the radio frequency signal of a downlink frequency band and send the radio frequency signal to the transceiver through the receiving radio frequency channel;
the single-pole double-throw switch is used for realizing the conduction of one of the transmitting radio frequency path and the receiving radio frequency path corresponding to the first antenna or an auxiliary radio frequency path;
if the first antenna receives a radio frequency signal of a downlink frequency band and sends the radio frequency signal to the transceiver through the receiving radio frequency path to meet an interference condition, the second antenna is connected with the transceiver through the auxiliary radio frequency path to suppress interference;
the second antenna at least shares transmission of the radio frequency signal of one frequency band of the first antenna, so that isolated transmission of the radio frequency signal of an uplink frequency band and the radio frequency signal of a downlink frequency band is realized.
2. The electronic device of claim 1, wherein the first antenna receives a radio frequency signal in a downlink frequency band and transmits the radio frequency signal to the transceiver through the receiving radio frequency path, wherein the condition that the radio frequency signal satisfies an interference condition includes at least one of:
the first antenna can obtain that the transmission power of the radio frequency signal of the uplink frequency band is greater than a transmission threshold value through the transmission radio frequency channel;
the first antenna can simultaneously receive radio frequency signals of at least two different frequency bands.
3. The electronic device of claim 2,
the second antenna being connected to the transceiver through the auxiliary radio frequency path to suppress interference comprises:
transmitting a radio frequency signal which can be received by the first antenna in a downlink frequency band to the transceiver through the auxiliary radio frequency path by controlling a single-pole double-throw switch;
the single end of the single-pole double-throw switch is connected with the transceiver, and the double ends of the single-pole double-throw switch are respectively connected with the receiving radio frequency path and the auxiliary radio frequency path.
4. The electronic device of claim 2,
the second antenna being connected to the transceiver through the auxiliary radio frequency path to suppress interference comprises:
transmitting the radio frequency signal of the uplink frequency band transmitted by the transceiver to the second antenna through the auxiliary radio frequency path by controlling a single-pole double-throw switch, and radiating the radio frequency signal of the uplink frequency band by the second antenna;
wherein, a single end of the single-pole double-throw switch is connected with the transceiver, and double ends of the single-pole double-throw switch are respectively connected with the transmitting radio frequency path and the auxiliary radio frequency path.
5. The electronic device of claim 3, further comprising:
the duplexer includes:
an antenna port connected to the first antenna;
the transmitting port is connected with the antenna port and the transmitting radio frequency path, and is used for receiving the radio frequency signal of the uplink frequency band transmitted by the transmitter from the transmitting radio frequency path and transmitting the radio frequency signal to the first antenna through the antenna port;
and the receiving port is connected with the antenna port and the receiving radio frequency path and is used for transmitting the radio frequency signals of the downlink frequency band received by the first antenna from the antenna port to the transceiver through the receiving radio frequency path.
6. The electronic device of claim 5, wherein the electronic device further comprises:
and the filter is positioned on the auxiliary radio frequency channel and used for filtering the radio frequency signals of the uplink frequency band or the radio frequency signals of the downlink frequency band transmitted by using the auxiliary radio frequency channel.
7. The electronic device of claim 3 or 4, wherein the electronic device further comprises:
and the processing module is connected with the single-pole double-throw switch and used for receiving the radio frequency signals of the downlink frequency band by the first antenna, sending the radio frequency signals to the transceiver through the receiving radio frequency channel to meet interference conditions, and controlling the single-pole double-throw switch to conduct the transceiver and the auxiliary radio frequency channel.
8. The electronic device of claim 7, wherein the processing module is further configured to determine intermodulation signals of the uplink frequency band and the downlink frequency band according to signal parameters of the radio frequency signals of the uplink frequency band and signal parameters of the radio frequency signals of the downlink frequency band; determining that the interference condition is satisfied.
9. A method of transceiving radio frequency signals, comprising:
determining whether a downlink frequency band radio frequency signal received by a first antenna meets an interference condition or not and is transmitted to a receiver through a receiving radio frequency path, wherein the first antenna can be connected with a transceiver through a transmitting radio frequency path and is connected with the transceiver through a receiving radio frequency path;
if the interference condition is met, controlling the second antenna to be connected with the transceiver through the auxiliary radio frequency channel so as to suppress interference;
the second antenna at least shares the transmission of the radio frequency signal of one frequency band of the first antenna so as to realize the isolated transmission of the radio frequency signal of an uplink frequency band and the radio frequency signal of a downlink frequency band;
wherein said controlling the second antenna to connect with the transceiver through the auxiliary radio frequency path to suppress interference comprises:
controlling the double ends of the single-pole double-throw switch to disconnect a transmitting radio frequency path of the first antenna and to connect an auxiliary radio frequency path; or controlling the double ends of the single-pole double-throw switch to disconnect the receiving radio frequency path of the first antenna and to connect the auxiliary radio frequency path.
10. The method of claim 9, wherein the first antenna receives the radio frequency signal in the downlink frequency band and transmits the radio frequency signal to the receiver through the receiving radio frequency path, and the interference condition is satisfied by at least one of:
the first antenna can obtain that the transmission power of the radio frequency signal of the uplink frequency band is greater than a transmission threshold value through the transmission radio frequency channel;
the first antenna can simultaneously receive radio frequency signals of at least two different frequency bands.
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| CN110166074B (en) * | 2019-06-14 | 2021-06-15 | Oppo广东移动通信有限公司 | Radio frequency circuit, electronic equipment and control method of radio frequency circuit |
| CN110311705A (en) * | 2019-06-28 | 2019-10-08 | 维沃移动通信有限公司 | A kind of signal processing circuit, terminal device and signal processing method |
| CN111404576B (en) * | 2020-03-24 | 2021-07-13 | RealMe重庆移动通信有限公司 | Radio frequency system and electronic equipment |
| CN112596111B (en) * | 2020-11-04 | 2024-02-13 | 普联技术有限公司 | Obstacle recognition method, device, equipment and readable storage medium |
| CN112397876A (en) * | 2020-11-05 | 2021-02-23 | 深圳市锐尔觅移动通信有限公司 | Antenna module and terminal |
| CN112769449B (en) * | 2021-01-11 | 2022-07-01 | 维沃移动通信有限公司 | Radio frequency circuit, radio frequency circuit control method and device and electronic equipment |
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