KR100910022B1 - Apparatus for processing a radio frequency signal for an automobile based terminal - Google Patents

Abstract

The present invention relates to a wireless signal processing apparatus having a wireless transmission / reception function. The wireless signal processing apparatus according to the present invention includes a transmission / reception signal separator, a wireless signal transmission / reception module, and a frequency generator, and the wireless signal transmission / reception module is a MMIC. (Monolithic Microwave Integrated Circuit) It is characterized in that it is integrated into a chip. The present invention integrates and implements the main components of the wireless signal processing device into a MMIC chip that can be manufactured in a batch process on a semiconductor substrate, thereby enabling a small and light weight of the wireless signal processing device and at the same time achieving a low price by the semiconductor manufacturing process. Can be.

Description

Wireless signal processing device for in-vehicle terminal {APPARATUS FOR PROCESSING A RADIO FREQUENCY SIGNAL FOR AN AUTOMOBILE BASED TERMINAL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio signal processing apparatus having a radio frequency (RF) communication function. As a specific example, a radio processing for a vehicle-mounted terminal constituting an electronic toll collection system (ETCS) is provided. Relates to a device. In particular, a wireless signal processing device for on-board equipment (On Board Equipment) has been proposed that enables a compact, lightweight and low-cost terminal by integrating the wireless signal transmission / reception module portion into a MMIC chip (Monolithic Microwave Integrated Circuit).

In recent years, as traffic has been congested due to the increase in vehicles, an intelligent transport system (ITS) has been proposed, which combines existing transportation systems with advanced technologies such as information and communication, electronics, control, and computers. It is to innovatively improve stability, efficiency and transportation environment.

As an example of such an intelligent transportation system, the Electronic Toll Collection System (ETCS) has been proposed for the automatic collection of tolls on toll roads such as highways and congested tolls in urban areas. The charge is automatically collected by wireless communication between the roadside base station apparatus and the terminal mounted in the vehicle passing through the tollgate.

The conventional electronic toll automatic collection system having such a configuration has a problem that the frequency use efficiency is low as the use frequency band is 300MHz level. In order to solve this problem, a method of increasing frequency utilization by using a short range wireless communication network has been attempted.

On the other hand, in many fields, it is required to achieve miniaturization, light weight, and low cost of electric and electronic equipment, and as a method for integrating various components into one chip, there has been proposed. A representative example thereof is a system-on-a-chip (SoC) for integrating a system into one semiconductor chip, and is being applied to many fields with the development of semiconductor process technology.

In the case of a wireless communication system in the technical field to which the present invention is applied, very precise adjustment of semiconductor process parameters is required to design an apparatus for processing a signal of a high frequency band. Therefore, it is technically more difficult to single-chip a system than a general device.

Such a single chip movement has been steadily attempted in the electronic toll automatic collection system using the above-mentioned short range wireless communication network. However, as mentioned earlier, single chipization of devices that process wireless signals has been only partially successful until now due to technical difficulties.

BACKGROUND OF THE INVENTION The wireless signal processing apparatus used in various communication systems including an automatic toll collection system generally includes a receiver, a transmitter, and a controller. According to the prior art, the receiver, the transmitter, and the controller are each chipped to implement a device composed of a plurality of chips. As described above, the single chip of each part of the wireless signal processing device has the advantage of being easy to implement, while it is insufficient to contribute to the expansion of the application field through the miniaturization and lightening of the device and the expansion of the consumer through the low price. .

Accordingly, the present invention intends to propose a new technology that can more efficiently configure the wireless signal processing device, and to achieve a miniaturization, light weight, and low cost by single-chip main components.

Technical challenge

SUMMARY OF THE INVENTION The present invention has been made to improve the prior art as described above, and forms a high frequency single integrated circuit (MMIC) through a single semiconductor process of a wireless signal receiver, a wireless signal transmitter, and a frequency generator, which are main components of a wireless signal processing apparatus. The purpose is to achieve miniaturization and weight reduction of the radio signal processing apparatus.

In addition, an object of the present invention is to combine a transmission and reception function through one antenna by including a transmission and reception signal separator as a main component of the wireless signal processing apparatus.

In addition, an object of the present invention is to configure the transmission and reception signal separator using a duplexer or an RF switch to duplex the transmission and reception signals in the FDD or TDD scheme.

In addition, an object of the present invention is to implement a superheterodyne receiver having a high reception efficiency by converting a radio reception signal into an intermediate frequency signal and outputting it back to a demodulator input.

Alternatively, the present invention implements a direct conversion receiver at low cost by directly converting an ASK-modulated radio signal into a baseband signal and extracting a digital value of the received signal through a limiting amplifier and a comparator. It is for that purpose.

In addition, an object of the present invention is to increase the ease of implementation and shorten the development period by integrating only the VCO and the divider except for TCXO and PLL among the devices required for frequency synthesis in the MMIC form.

In addition, an object of the present invention is to produce a vehicle-mounted terminal of a wireless signal processing device, in particular, an electronic toll automatic collection system at low cost and high efficiency, and to reduce the size and weight thereof so as to expand the scope of use and meet the demands of consumers.

Technical solution

In order to achieve the above object and solve the above-mentioned problems of the prior art, a radio frequency (RF) signal processing terminal according to the present invention, the transmission and reception signal separator for separating the radio transmission signal and radio reception signal, radio reception A wireless signal transmission / reception module for down-converting a signal to a baseband signal or up-converting a baseband signal to a wireless transmission signal, and a wireless signal transmission / reception module connected to the wireless signal transmission / reception module to generate an up or down frequency signal for frequency conversion And a frequency control unit for inputting to the wireless signal transmission / reception module, wherein the wireless signal transmission / reception module converts the wireless signal into a baseband reception signal by mixing the radio signal with the downlink frequency signal again, and mixes the baseband signal with the uplink frequency signal to transmit the radio transmission signal. With a wireless signal transmitter, and a VCO and divider Generated is characterized in that the configuration includes a frequency generation.

Furthermore, it is a feature of the present invention to integrate the wireless signal transmission and reception module configured as described above into a high frequency monolithic microwave integrated circuit (MMIC).

In addition, the wireless signal transmission and reception module, which is a major component of the wireless signal processing apparatus according to the present invention, requires downlink and uplink frequency signals generated by the VCO for downlink and uplink frequency conversion, and the VCO is connected to the wireless signal transceiver module. Controlled by a connected PLL, the PLL is driven by a reference frequency signal generated by the TCXO.

1 is a diagram schematically illustrating a configuration of a general communication terminal having a wireless signal processing function.

FIG. 2 is a diagram showing a detailed configuration of an RF processing unit in charge of processing a radio signal in FIG. 1.

3 is a diagram illustrating an internal configuration of a wireless signal processing apparatus according to an embodiment of the present invention.

4 is a diagram illustrating an internal configuration of a wireless signal processing apparatus according to another embodiment of the present invention.

Embodiment for Invention

Hereinafter, a wireless signal processing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

As described above, the wireless signal processing apparatus according to the present invention is an electronic toll automatic collection system using active dedicated short range communication (DSRC), which is configured to communicate with a roadside base station apparatus installed on a road. Can be. For reference, the DSRC system to which the present invention is applied may use a frequency of 5.8 GHz band for transmitting and receiving signals. As described above, the present invention can secure more channels by transmitting and receiving signals using a high frequency band, thereby increasing frequency utilization.

It is an object of the present invention to implement a wireless signal transmission / reception module, which is a main component of a wireless signal processing device, as a MMIC (Monolithic Microwave Integrated Circuit) chip that can be manufactured in a batch process on a semiconductor substrate. In this regard, the configuration of a general on-vehicle terminal is as shown in FIG. 1.

That is, the vehicle-mounted terminal in the automatic toll collection system, as shown in FIG. 1, communicates with a roadside base station apparatus through an antenna ANT to transmit and receive a radio signal that is information necessary for automatically collecting tolls. An RF processor 101, a power processor 102 for supplying a series of driving powers, a memory 103 for storing card transactions and vehicle information, a display for displaying menus and card transactions, etc. The unit 104, a speaker unit 105 for voice guidance of a series of procedures and processing results in connection with automatic toll collection, and a user who receives user selections or provides an interface for collecting tolls using a smart card. Controls and manages the overall operation of the information interface unit 106 and the vehicle-mounted terminal, and the roadside base station apparatus through the RF processing unit 101 And receive wireless signals and a main control unit 107 to operate a control for performing automatic toll collection function.

The RF processor 101 of FIG. 1 will be described in more detail with reference to FIG. 2. The RF processor 101 includes a transmit / receive signal separator 200 that separates a radio transmission signal from a radio reception signal; Wireless signal transmission / reception modules 201, 202, and 205 for down-converting a wireless reception signal to a baseband signal or up-converting a baseband signal to a wireless transmission signal, and an uplink frequency signal for frequency conversion in connection with the wireless signal transmission / reception module. Or it comprises a frequency control unit 210 for generating a downlink frequency signal and inputs to the wireless signal transmission and reception module.

The wireless signal transmission / reception module may further convert a wireless reception signal into a baseband signal by mixing the radio reception signal with a downlink frequency signal, and convert the baseband signal into a radio transmission signal by mixing the baseband signal with an uplink frequency signal. A frequency including a transmitter 202, a voltage controlled oscillator (VCO) for generating an uplink or downlink frequency signal, and a prescaler for inputting feedback to the PLL by dividing a waveform generated from the VCO by an integer multiple. It is comprised of the generating part 205.

The signal received by the wireless signal receiving unit 201 and converted into baseband is input to the demodulator 204 and restored to the original signal form before transmission. In addition, the baseband signal input to the wireless signal transmitter 202 is a general configuration that is amplified once through the baseband amplifier 203 and then converted into a high frequency signal.

The frequency generator 205, which is a main component of the wireless signal transmission / reception module, is controlled by the PLL 206 connected to the outside, and the PLL 206 is again a reference frequency signal output from the TCXO 207. It works by The feedback control signal for operating the PLL is obtained again from the frequency generator 205, which will be described in detail later.

The present invention has a technical feature in integrating a wireless signal transmission / reception module, which is a main component of the wireless signal processing device configured as described above, in the form of an MMIC chip. That is, in comparison with the prior art in which the wireless signal transmitter 202, the wireless signal receiver 201, and the parts related to the frequency synthesis are implemented as separate chips, the present invention provides a wireless signal transmitter 202 and a wireless signal receiver ( 201) and the frequency generator 205 can be integrated into one chip to achieve a higher level of miniaturization and weight reduction. That is, by integrating components previously implemented in the form of a plurality of chips into one chip, space utilization may be increased, and a significant cost reduction and a wider range of users may be contributed.

An example of a wireless signal processing apparatus including an MMIC-ized wireless signal transmission / reception module is shown in FIG. 3.

As shown in FIG. 3, the apparatus for processing wireless signals according to an embodiment of the present invention includes a power amplifier 301, an up-conversion mixer UMIX, and a low noise amplifier 303. ), The functions of the down-conversion mixer (DMIX) 304 and the intermediate frequency amplifier (305), and the reference frequencies required for the uplink mixer 302 and the downlink mixer 304 It has a configuration that integrates the functions of a voltage controlled oscillator (VCO) 306 and a prescaler 307 to provide a single wireless signal transmission and reception module 310, instead of the existing frequency synthesizer Phase Locked Loop (PLL) 308 and PLL 308 such that the frequency output from the VCO 306 configured in the wireless signal transmission / reception module 310 has a certain accuracy without being affected by external environmental changes. Capable of this frequency discrimination It has a configuration in which a temperature compensation crystal oscillator (TCXO) 309 for oscillating low frequency below a MHz unit used as a basic reference or a clock is interlocked.

The power amplifier 301 and the uplink frequency mixer 302 are components of the wireless signal transmitter 202 of FIG. 2, and the low noise amplifier 303, the downlink frequency mixer 304, and the intermediate frequency amplifier 305 are shown in FIG. 2. The wireless signal receiver 201 is configured. Meanwhile, the VCO 306 and the divider 307 correspond to the frequency generator 205 of FIG. 2, and the PLL 308 and the TCXO 309 are included in the frequency controller 210 as described above.

According to an embodiment of the present invention, the divider 307 may be configured as a divider for dividing the waveform generated by the VCO by an integral multiple of four times. The performance of the divider with an integer multiple of 4 has been confirmed through experiments, and the divider configured as such is widely used in general radio frequency communication systems.

The wireless signal processing apparatus according to the present embodiment is connected to the antenna ANT transmit and receive signal separator 200 for separating the radio transmission and reception signals, and a radio signal transmission and reception module 310 for transmitting and receiving radio signals and Band-pass filters 311 and 312 for performing band pass filtering on the radio transmission and reception signals processed by the radio signal transmission / reception module 310 and up / down frequency mixing of the radio signal transmission / reception module 310, respectively. And a PLL 308 for controlling the provided reference frequency to be output at a constant frequency, and a TCXO 309 for oscillating a low frequency signal required for the PLL 308.

Here, the wireless signal transmission / reception module 310 low noise amplifies the wireless signal received through the antenna and the transmission / reception signal separator 200, and then band-filters the external band pass filter 312, and filters the band-filtered wireless reception signal. After converting the intermediate frequency through the downlink frequency mixing, the amplified signal is transmitted to the demodulator 209 and the intermediate frequency transmission signal output from the main controller 107 through the baseband amplifier 208 is uplink frequency. After converting into a wireless transmission signal through mixing and band-pass filtering through the external band pass filter 311, and a power signal amplifying the band-filtered wireless transmission signal and outputs to the transmission and reception signal separator 200 includes a wireless signal transmitter. .

In addition, the PLL 308 has a reference frequency used for mixing uplink frequency and downlink frequency for frequency conversion of the radio signal and the intermediate frequency signal of the radio signal transmission / reception module 310 under the control of the main controller 107. TCXO 309 is an oscillator whose natural vibration frequency hardly changes in response to temperature changes, and is a basic reference or clock that can discriminate frequencies in the PLL 308. It oscillates low frequencies below the MHz used.

In addition, in the above-described wireless signal transmission and reception module 310, the power amplifier 301 and the uplink frequency mixer 302 for the wireless signal transmission processing, the low noise amplifier 303 and the downlink frequency mixer (for the radio signal reception processing) 304 and the intermediate frequency amplifier 305 perform the same functions as before, in addition to the functions of the voltage controlled oscillator 306 and the divider 307, the voltage controlled oscillator 306 is to control the external PLL. Accordingly, the reference frequency used for the uplink frequency mixing and the downlink frequency mixing for the frequency conversion of the radio signal and the intermediate frequency signal is generated, and the divider 307 divides the output frequency of the voltage controlled oscillator 306 by an integer multiple. It outputs a low frequency signal necessary for high frequency stability of the external PLL 308.

This embodiment shows a so-called superheterodyne receiver structure in which a radio reception signal is first converted into an intermediate frequency and then amplified and demodulated. The superheterodyne method is widely used to solve problems such as oscillation that may occur when directly amplifying a signal of a carrier frequency. Since the amplification is performed at a relatively low intermediate frequency, amplification is easy and high reception efficiency can be obtained. It has the advantage of being. This embodiment adopts such a widely-used superheterodyne receiver structure to MMIC, thereby miniaturizing the wireless signal processing device while ensuring good reception performance.

In the present invention, a wireless signal processing operation when the wireless signal processing device is configured as a wireless signal transmission / reception module will be described.

First, when the in-vehicle terminal receives information from the roadside base station apparatus, the wireless signal input through the antenna is separated by only the reception frequency signal by the transmit / receive signal separator 200 and then input to the MMICized wireless signal transmit / receive module 310. When the radio signal transmission / reception module 310 receives a series of radio signals in this way, the low noise amplifier 303 implemented in the radio signal transmission / reception module 310 performs low noise amplification for the received radio signal and then, After passing through the band pass filter 312 implemented, the band pass filter is passed back to the downlink frequency mixer 304 implemented in the wireless signal transmission / reception module 310.

Then, the downlink frequency mixer 304 of the radio signal transmission / reception module 310 converts the received radio signal into an intermediate frequency signal based on the frequency provided from the voltage controlled oscillator 306, and converts the intermediate frequency signal into an intermediate frequency amplifier ( After amplifying the signal at a predetermined signal level, that is, an intermediate frequency, to the demodulator 209 outside the module, the demodulator 209 converts the digital signal to the main controller 107 to receive the radio signal. Is done.

Next, when transmitting information from the vehicle-mounted terminal to the roadside base station apparatus, the baseband amplifier 208 amplifies the transmission signal output from the main control unit 107 to transmit a series of intermediate frequency transmission signals to the wireless signal transmission / reception module 310. ), The uplink frequency mixer 302 implemented in the radio signal transmission / reception module 310 converts the intermediate frequency transmission signal into a transmission radio signal based on a frequency provided from the voltage controlled oscillator 306 and then outside the module. The band pass filter 311 is implemented in the band pass filter, and then is filtered to the power amplifier 301 implemented in the wireless signal transmission / reception module 310.

Then, the power amplifier 301 of the wireless signal transmission / reception module 310 integrated with the MMIC chip transmits power amplification of the transmission wireless signal to the transmission / reception signal separator 200, and the transmission / reception signal separator 200 transmits the wireless transmission. By separating the signal and transmitting the signal to the side of the base station apparatus through the antenna, the radio signal transmission processing is performed.

The transmit / receive signal separator 200 is a device required to simultaneously transmit and receive a radio signal with one antenna. The transmission / reception signal separator 200 may be configured in various forms according to a duplexing method of the wireless reception signal and the wireless transmission signal. As an example, when adopting a frequency division duplexing (FDD) method for allocating a carrier having different frequencies to a received signal and a transmitted signal, the transmit / receive signal separator may be configured using a duplexer. Can be. In this case, when the frequencies of the radio reception signal and the radio transmission signal are different, since two adjacent frequencies are used for one center frequency, transmission and reception signals can be separated using one antenna.

Alternatively, a time division duplexing (TDD) system that allocates different time slots to radio signal reception and transmission operations so that reception and transmission as a whole can be performed simultaneously. 200 may be configured in the form of an RF switch. That is, the RF signal can be separated from the received signal and the transmitted signal by switching the transmitting and receiving circuits to be connected to the antennas for each very short time unit.

Separation of the wireless reception signal and the wireless transmission signal through the transmission and reception signal separator 200 is an active DSRC, in which the roadside base station does not unilaterally transmit a signal toward the on-vehicle terminal, but transmits a lot of information from the on-vehicle terminal to the roadside base station. It must be bidirectional communication function. Therefore, the transmission and reception signal separator 200 is a component necessary for the wireless signal processing apparatus according to an embodiment of the present invention to operate in an active DSRC system.

4 shows a configuration of a wireless signal processing apparatus according to another embodiment of the present invention. Similar to the above-mentioned embodiment with reference to FIG. 3, the present embodiment also includes a transmission / reception signal separator 200 for distinguishing a wireless reception signal from a wireless transmission signal, and the wireless signal transmitter 202 includes a power amplifier 401, An up frequency mixer 402, and a baseband filter 413. Similarly, the wireless signal receiver 201 is configured using a low noise amplifier 403, a down frequency mixer 404, a band pass filter 408, a limiting amplifier 409, and a comparator 410.

As in the case of the embodiment related to FIG. 3, the frequency generator 205 of FIG. 2 is composed of a VCO and a divider, and the frequency controller 210 connected to the VCO for supplying a reference frequency is a PLL 206 and a TCXO, respectively. 207 may be included.

The configuration and function of the wireless signal processing apparatus according to the present embodiment will be described with reference to FIG. 4. 4 is a wireless signal processing apparatus for collectively processing the reception and demodulation of a wireless reception signal when the wireless reception signal is modulated in an amplitude shift keying (ASK) mode. First, a process of receiving a wireless signal is as follows.

The wireless signal processing apparatus according to an embodiment of the present invention receives a wireless signal through an antenna ANT. The received wireless signal is separated from the wireless transmission signal through the transmission and reception signal separator 200 and input to the low noise amplifier 403 of the wireless signal transmission and reception module 420 integrated into the MMIC chip. The low noise amplified signal is input back to the downlink frequency mixer 404. The wireless received signal mixed with the downlink frequency signal by the downlink frequency mixer 404 is converted into a baseband received signal while passing through the bandpass filter 408. The limiting amplifier 409 converts the received signal, which is frequency-converted into the baseband, into a signal of a constant size and outputs the signal. Although the signal output by the limiting amplifier is an analog signal, it has a constant value like a digital signal. The comparator 410 connected to the rear end of the limiting amplifier 409 compares the output signal of the limiting amplifier 409 with a reference voltage and determines the value of '1' or '0' according to the result. Do it.

In the case of ASK modulation, a transmission signal is modulated in such a manner that carriers have different amplitudes according to values of transmission data. Therefore, the receiving side of the ASK modulated signal extracts the digital value of the transmission data using the size information of the received signal. Thus, as illustrated in FIG. 4, it is possible to simply implement a demodulation function using the band pass filter 408, the limiting amplifier 409, and the comparator 410. In addition, according to the present embodiment, the demodulation function implemented as described above is included in the wireless signal transmission / reception module 420 to MMIC together, thereby eliminating the need to additionally connect a demodulator to the outside, thereby reducing physical space and cost required for device configuration. You can save.

Meanwhile, the wireless signal transmitter 202 of the wireless signal processing apparatus according to the present embodiment may include a power amplifier 401, an up frequency mixer 402, and a variable amplifier 405. The main controller 107 inputs the baseband signal to be transmitted to the variable amplifier 405 of the wireless signal transmission / reception module 420 through the baseband filter 414. At this time, the wireless signal transmission and reception module 420 is integrated into the MMIC chip. The variable amplifier refers to a device for amplifying a signal with an arbitrary gain value according to an external control voltage. For reference, the variable amplifier 405 included in this embodiment is just one example for explaining the configuration of the present invention, and replaces with any type of amplifier capable of MMIC integration, which performs the same or similar functions. can do.

The transmission signal amplified in the baseband by the variable amplifier 405 is mixed with the uplink frequency signal in the uplink frequency mixer 402 and converted into a radio transmission signal. Prior to the final amplification for wireless transmission, the converted wireless transmission signal is subjected to a process of removing unnecessary band signal components by the band pass filter 413. The filtered wireless transmission signal is amplified by the power amplifier 401 and then transmitted to the base station through the transmission and reception signal separator 200.

The band pass filter 413 connected to the wireless signal transmitter is a filter for a high frequency converted transmission signal, for example, a filter having a pass band of the 5.8 GHz band. Alternatively, the band pass filter 408 included in the wireless signal receiver is a filter for a baseband signal having a pass band near 1 MHz, for example. Thus, the latter band pass filter 408 can be integrated into the MMIC chip relatively easily as compared to the former band pass filter 413. By selectively including components that are relatively easy to integrate MMIC into the wireless signal transmission / reception module, it is easy to implement and shorten the development period.

For the same reason, some of the components required for frequency synthesis, the VCO 406 and the divider 407, are integrated into the MMIC chip, and the PLL 411 and TCXO 412 can be configured to operate by connecting to the outside of the MMIC chip. Can be. The former to be MMIC is called the frequency generator 205, and the latter which is not to be MMIC is called the frequency controller 210. As the MMIC of the band pass filters is selectively MMIC, only the portion corresponding to the frequency generator 205 among the components used for the frequency synthesis is MMIC, so that a more practical device configuration can be implemented at the current level of semiconductor process technology. This is possible.

The wireless signal processing apparatus according to the present embodiment directly converts a wireless reception signal into a baseband signal to perform amplification and demodulation. Such a receiver structure is called a direct down-conversion method. While the embodiment of the superheterodyne method described with reference to FIG. 3 guarantees good performance, it has a disadvantage in that the configuration is relatively complicated and expensive. Therefore, by adopting the direct down conversion method as in this embodiment, it is possible to maximize the cost reduction effect of the MMIC.

In addition, as shown in FIG. 3, the wireless signal transmitter 202 converts the transmission data without passing through an intermediate frequency and transmits the data in a direct up-conversion scheme, whereas the wireless signal receiver 201 uses 50 to 70. In case of using the super heterodyne method with an intermediate frequency of about MHz, a difference of about 50 to 70 MHz is generated in the local oscillator (LO) frequency of the transmit / receive signal. Should give. In this case, the masking time required for switching the LO frequency is very short compared to the frequency fixing time of a commercial PLL, which affects the stability of the PLL. However, the direct downconversion scheme, which does not need to change the downlink frequency, as in the present embodiment, does not require switching of the LO frequency, thereby ensuring stable PLL performance.

The embodiment according to the present invention is not limited to the above-described embodiments, and may be modified and modified in various alternatives within the scope obvious to those skilled in the art.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

According to the radio signal processing apparatus according to the present invention, by integrating the radio signal receiver, the radio signal transmitter, and the frequency generator of the components of the radio signal processing apparatus into the MMIC chip, the device can be miniaturized and reduced in weight to a higher level than the prior art. Can be achieved.

In addition, according to the wireless signal processing apparatus according to the present invention, it is possible to process both the radio transmission signal and the radio reception signal with a single antenna in a TDD or FDD manner through the transmission and reception signal separator.

In addition, according to the wireless signal processing apparatus according to an embodiment of the present invention, by adopting a super heterodyne receiver structure that converts a wireless reception signal into an intermediate frequency signal, and performs amplification, modulation, etc. at the intermediate frequency, high reception efficiency The device can be made smaller and lighter.

In addition, according to the wireless signal processing apparatus according to an embodiment of the present invention, by directly converting the radio received signal into a baseband signal to perform amplification and demodulation in the MMIC chip, direct configuration is simple and inexpensive The receiver of the conversion method can be implemented.

In addition, according to the wireless signal processing apparatus according to an embodiment of the present invention, by selectively MMIC integrated components and band pass filters related to frequency synthesis, it is possible to ensure the ease of implementation and shorten the development period. That is, by selecting the components that can be implemented at an appropriate cost by the current semiconductor technology, it is possible to provide a wireless signal processing apparatus of a more substantial structure.

Claims (9)

A transmission and reception signal separator for separating a first wireless signal received through an antenna and a second wireless signal transmitted through the antenna; A wireless signal transceiving module for downconverting the first wireless signal to a first baseband signal or upconverting a second baseband signal to the second wireless signal; And A frequency controller connected to the wireless signal transmission / reception module to generate an up frequency signal or a down frequency signal for frequency conversion and input the same to the wireless signal transmission / reception module, The wireless signal transceiving module may include: a wireless signal receiving unit converting the first wireless signal into the first baseband signal by mixing the downlink frequency signal; A radio signal transmitter configured to convert the second baseband signal into the second radio signal by mixing the uplink frequency signal; And And a frequency generator including a voltage controlled oscillator for generating the uplink frequency or the downlink frequency, and a divider for dividing a waveform generated by the voltage controlled oscillator by an integer multiple and inputting the frequency control unit to the frequency controller. The wireless signal transceiving module is a wireless signal processing device, characterized in that configured by integrating a high frequency monolithic integrated circuit (MMIC). The method of claim 1, The frequency control unit includes a temperature compensated crystal oscillator, wherein the frequency control unit generates the uplink frequency signal or the downlink frequency signal using a reference frequency signal generated by the temperature compensated crystal oscillator. Device. The method of claim 1, The wireless signal receiver is a low noise amplifier for amplifying the first wireless signal to generate a low noise amplified signal, and a downlink for mixing the low noise amplified signal with a band pass filtered first filter signal to the intermediate frequency signal and converting it into an intermediate frequency signal. A frequency mixer and an intermediate frequency amplifier for amplifying and outputting the intermediate frequency signal, The wireless signal transmitter amplifies the second baseband signal and mixes it with the uplink frequency to convert the radio signal into a radio signal, and amplifies the second filter signal by bandpass filtering the radio signal to generate a second radio signal. Wireless signal processing device comprising a power amplifier for outputting. The method of claim 1, And the signal transmitting / receiving divider performs frequency division duplexing (FDD) of the first wireless signal and the second wireless signal. The method of claim 1, And the first radio signal is a signal modulated by an amplitude shift method. The method of claim 5, The wireless signal receiver may include a low noise amplifier for amplifying the first wireless signal to generate a low noise amplified signal, a down frequency mixer for mixing the low noise amplified signal with the down frequency to generate a down frequency mixed signal, and the down frequency mixed signal from the down frequency mixed signal. A bandpass filter for extracting only the baseband signal, a limiting amplifier for converting the extracted baseband signal into a signal having a predetermined magnitude, and a signal output by the limiting amplifier, and comparing the digital signal value with a reference voltage. And a comparator for determining, wherein the wireless signal transmitter is a variable amplifier for amplifying the second baseband signal with an arbitrary gain value, and converts the signal amplified by the variable amplifier with the uplink frequency into a wireless signal. An up frequency mixer, and the radio signal in a band Filter and a back, the radio signal processing unit comprises a power amplifier which outputs a second radio signal by amplifying the band-pass filter output signal with filtered. The method of claim 1, The transmission and reception signal splitter is a time division duplexing (TDD) of the first radio signal and the second radio signal. The method of claim 1, The first radio signal and the second radio signal is a wireless signal processing device, characterized in that the signal of the 5.8 GHz band. The method of claim 1, The frequency divider is a wireless signal processing device, characterized in that for dividing the period of the input waveform by four times.

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