CN113708792B

CN113708792B - Wireless transmitting and receiving device, signal processing method thereof and communication equipment

Info

Publication number: CN113708792B
Application number: CN202010374105.9A
Authority: CN
Inventors: 刘刚
Original assignee: Guangzhou Haige Communication Group Inc Co
Current assignee: Guangzhou Haige Communication Group Inc Co
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2023-01-03
Anticipated expiration: 2040-05-06
Also published as: CN113708792A

Abstract

The application relates to a wireless transceiver, a signal processing method thereof and communication equipment. The wireless transceiver comprises a transceiver and a remote power amplifier device connected with the transceiver; the transceiver comprises a microcomputer control module, a digital processing module, a radio frequency processing module and a power amplifier module which are connected in sequence; the microcomputer control module is respectively connected with the radio frequency processing module, the power amplification module and the remote power amplification device; the remote power amplifier device is connected with the power amplifier module; the power amplification module and the remote power amplification device are respectively used for connecting an antenna; the wireless communication device has the advantages of super-strong anti-interference capability and soil layer penetration capability, and high efficiency, good stability and strong penetration capability compared with other wireless communication devices.

Description

Wireless transmitting and receiving device, signal processing method thereof and communication equipment

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a wireless transceiver, a signal processing method thereof, and a communication device.

Background

At present, the conventional means for establishing underground and ground communication is mainly wired communication equipment; in the implementation process, the inventor finds that at least the following problems exist in the conventional technology: in case of accidents such as: accidents such as collapse of mines/tunnels, roof fall, gas explosion and the like occur, so that the cable is easily broken, the equipment cannot work normally, and the underground cannot be communicated with the ground.

Disclosure of Invention

In view of the above, it is desirable to provide a wireless transceiver, a signal processing method thereof, and a communication device, which can improve communication stability.

In order to achieve the above object, in one aspect, an embodiment of the present invention provides a wireless transceiver device, including a transceiver and a remote power amplifier device connected to the transceiver;

the transceiver comprises a microcomputer control module, a digital processing module, a radio frequency processing module and a power amplifier module which are connected in sequence; the microcomputer control module is respectively connected with the radio frequency processing module, the power amplification module and the remote power amplification device; the remote power amplifier device is connected with the power amplifier module; the power amplification module and the remote power amplification device are respectively used for connecting an antenna;

wherein, the microcomputer control module outputs audio signals; the digital processing module adopts up-conversion to process audio signals and outputs radio frequency signals; the radio frequency processing module performs radio frequency amplification on the radio frequency signal and outputs a radio frequency excitation signal; the power amplification module is used for sequentially carrying out power amplification and impedance matching processing on the radio frequency excitation signal, then emitting the radio frequency excitation signal through the antenna, and outputting the processed radio frequency excitation signal; and the remote power amplifier sequentially performs power amplification, harmonic wave filtering and impedance matching on the processed radio frequency excitation signal and then emits the radio frequency excitation signal out of the antenna.

In one embodiment, the system further comprises a frequency synthesis module respectively connected with the microcomputer control module, the digital processing module and the radio frequency processing module;

the digital processing module comprises an intermediate frequency digitizing circuit, a high-speed modem circuit respectively connected with the microcomputer control module and the intermediate frequency digitizing circuit, and a low-speed modem circuit respectively connected with the microcomputer control module and the intermediate frequency digitizing circuit; the intermediate frequency digitizing circuit is connected between the microcomputer control module and the radio frequency processing module;

the frequency synthesis module outputs a high-speed modulation and demodulation clock frequency to the high-speed modem circuit and outputs a low-speed modulation and demodulation clock frequency to the low-speed modem circuit according to the reference clock frequency;

the microcomputer control module outputs frequency conversion information; when the frequency synthesis module receives the frequency conversion information, a local oscillator signal is output to the radio frequency processing module; the radio frequency processing module processes the radio frequency signal from the antenna based on the local oscillator signal.

In one embodiment, the intermediate frequency digitizing circuit is connected to the high-speed modem circuit and the low-speed modem circuit through corresponding electronic switches;

the microcomputer control module outputs digital information; the high-speed modem circuit or the low-speed modem circuit processes the digital information and outputs an analog audio signal; the intermediate frequency digitizing circuit receives the analog audio signal at the electronic switch and outputs a radio frequency signal;

the intermediate frequency digitizing circuit comprises a first D/A converter, a first A/D converter, a DSP chip, a digital up-converter, a digital down-converter, a second D/A converter and a second A/D converter;

the input end of the second A/D converter is connected with the radio frequency processing module, and the output end of the second A/D converter is connected with the DSP chip through the digital down converter; the DSP chip is connected with the input end of the first D/A converter; the output end of the first D/A converter outputs an audio signal;

the input end of the first A/D converter is connected with the microcomputer control module, and the output end of the first A/D converter is connected with one end of the digital up-converter through the DSP chip; the other end of the digital up-converter is connected with the input end of the second D/A converter; the output end of the second D/A converter is connected with the radio frequency processing module.

In one embodiment, the frequency synthesis module comprises a DDS circuit, a PLL circuit, a loop filter and a voltage controlled oscillator; the PLL circuit includes a programmable device; the DDS circuit is connected with the radio frequency processing module;

one end of the programmable device is connected with the microcomputer control module, and the other end of the programmable device is connected with the DDS circuit; the loop filter is connected between the DDS circuit and the voltage-controlled oscillator; the voltage-controlled oscillator is respectively connected with the high-speed modem circuit and the low-speed modem circuit.

In one embodiment, the radio frequency processing module comprises a transmitting path and a receiving path;

the transmitting path comprises a first radio frequency amplifier and a second radio frequency amplifier which are connected in sequence; the transmitting path also comprises an ALC control circuit and a tuning control circuit; one end of the ALC control circuit is connected with the microcomputer control module, and the other end of the ALC control circuit is respectively connected with the first radio frequency amplifier and the second radio frequency amplifier through the tuning control circuit; the input end of the first radio frequency amplifier is connected with the digital processing module, and the output end of the first radio frequency amplifier is connected with the power amplifier module through the second radio frequency amplifier;

the receiving path comprises a balanced mixer and an intermediate frequency amplifying circuit which are connected in sequence; the intermediate frequency amplifying circuit comprises an AGC control circuit, an intermediate frequency filter and an intermediate frequency amplifier which are both connected with the AGC control circuit; the first input end of the balanced mixer is used for connecting an antenna, the second input end of the balanced mixer is connected with the frequency synthesis module, and the output end of the balanced mixer is connected with the input end of the intermediate frequency amplifier through the intermediate frequency filter; the output end of the intermediate frequency amplifier is connected with the digital processing module.

In one embodiment, the power amplifier module comprises an antenna tuning module and a power amplifier harmonic module which are both connected with the microcomputer control module;

the input end of the power amplifier harmonic module is connected with the radio frequency processing module, and the output end of the power amplifier harmonic module is connected with the antenna tuning module; the output end of the antenna tuning module is connected with the remote power amplifier device and is used for being connected with the antenna.

In one of the embodiments, the first and second parts of the device,

the power amplifier harmonic module comprises a power amplifier, a harmonic filter and a power detector which are connected in sequence; the input end of the power amplifier is connected with the radio frequency processing module, and the output end of the power detector is connected with the antenna tuning module; the harmonic filter is connected with the microcomputer control module;

the push amplifier of the power amplifier comprises a class A amplifier, and the final amplifier of the power amplifier comprises a class AB push-pull power amplifier; the harmonic filter comprises a 5-section five-order elliptic low-pass filter obtained according to the working bandwidth; the working bandwidth is 200 kHz-1 MHz;

the antenna tuning module comprises an antenna tuning network control circuit connected with the microcomputer control module and an antenna tuning detection circuit connected with the antenna tuning network control circuit;

the space modulation detection circuit samples, rectifies and filters the radio frequency excitation signal and transmits the radio frequency excitation signal to the space modulation network control circuit for impedance matching.

In one embodiment, the remote power amplifier device comprises a power amplifier and an antenna tuner which are both connected with the microcomputer control module; the power amplifier is connected between the power amplifier module and the antenna tuner; the antenna tuner is used for connecting an antenna;

the power amplifier comprises a power amplification module and a harmonic wave filtering module; the antenna tuner comprises an antenna tuning control module and an antenna tuning network module;

one end of the power amplification module is connected with the power amplification module, and the other end of the power amplification module is connected with one end of the harmonic wave filtering module; the other end of the harmonic wave filtering module is connected with one end of the antenna tuning network module; the other end of the sky tune network module is connected with an sky tune control module; the microcomputer control module is respectively connected with the antenna modulation control module, the power amplification module and the harmonic wave filtering module.

In one embodiment, the power amplification module comprises a class AB power amplifier; the harmonic wave filtering module comprises a harmonic wave filtering circuit and a power detection circuit; the antenna tuning network module comprises a current detection circuit and a tuning matching network;

the harmonic filter circuit is respectively connected with the microcomputer control module, the AB type power amplifier and the power detection circuit; the power detection circuit is connected with the current detection circuit;

the current detection circuit samples, rectifies and filters the radio frequency signal output by the power detection circuit and outputs a sampling voltage; the antenna control module processes the sampling voltage and adjusts network parameters of the tuning matching network by adopting a tuning algorithm so as to carry out impedance matching.

In one embodiment, the device further comprises a panel;

the panel is connected to the transceiver through a communication connector or communication device interface.

A signal processing method of a wireless transceiver device, for the wireless transceiver device, comprising the steps of:

receiving an input signal;

multiplying a local Chirp signal by an input signal, outputting a correlation value, and confirming the synchronization time until the maximum peak value of the correlation value appears;

demodulating and judging the MFSK signal by adopting optimal incoherent detection; the step of demodulating and deciding the MFSK signal by adopting the optimal noncoherent detection comprises the following steps: and acquiring the integral sum of the input signal and the orthogonal carrier of each path in each local path, determining the square sum of the integrals of the sine branch and the cosine branch, comparing and judging, and determining the corresponding frequency of the output maximum branch as the sending frequency.

A communication device comprises the wireless transceiver.

One of the above technical solutions has the following advantages and beneficial effects:

the wireless transceiver device comprises a transceiver and a remote power amplifier device connected with the transceiver; the transceiver comprises a microcomputer control module, a digital processing module, a radio frequency processing module and a power amplifier module which are connected in sequence; the microcomputer control module outputs an audio signal, and the audio signal is processed by the digital processing module and the radio frequency processing module and then is emitted by the power amplification module and the remote power amplification device, so that the matching state between circuits and the signal control process are the optimized optimal state; the wireless communication device has the advantages of super-strong anti-interference capability and soil layer penetration capability, and high efficiency, good stability and strong penetration capability compared with other wireless communication devices; the method has ultrahigh receiving and transmitting efficiency, low introduced noise and small signal distortion, ensures weak signal demodulation within the maximum range by optimal channel quality, and can analyze minus dozens of dB of weak signals below the noise, thereby enhancing the signal receiving capacity.

Drawings

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

FIG. 1 is a diagram of an exemplary embodiment of a wireless transceiver;

FIG. 2 is a diagram illustrating an exemplary embodiment of a wireless transceiver device;

FIG. 3 is a schematic diagram of a microcomputer control module of the wireless transceiver device in one embodiment;

FIG. 4 is a diagram illustrating an exemplary embodiment of a wireless transceiver device;

fig. 5 is a schematic structural diagram of a power amplifier harmonic module of the wireless transceiver device in an embodiment;

FIG. 6 is a diagram illustrating the characteristics of a medium wave antenna in one embodiment;

FIG. 7 is a schematic block diagram of antenna tuner hardware in one embodiment;

fig. 8 is a schematic structural diagram of a wireless transceiver device according to an embodiment;

fig. 9 is a schematic structural diagram of a frequency synthesis module of the wireless transceiver in one embodiment;

FIG. 10 is a block diagram of a digital processing module of the wireless transceiver device according to an embodiment;

fig. 11 is a schematic structural diagram of an rf processing module of the wireless transceiver device in an embodiment;

FIG. 12 is a schematic diagram of a front panel of a transceiver device in one embodiment;

fig. 13 is a schematic diagram of optimal coherent detection of a Chirp signal in one embodiment;

FIG. 14 is a diagram illustrating performance of an embodiment with phase errors;

fig. 15 is a schematic diagram of optimal coherent detection of MFSK signals.

Detailed Description

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

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. The first resistance and the second resistance are both resistances, but they are not the same resistance.

It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," or "having," and the like, specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

The conventional means for establishing underground and surface communication are mainly wired communication equipment, and once accidents occur, the conventional means comprise: accidents such as collapse of mines/tunnels, roof fall, gas explosion and the like easily cause the breakage of wired cables, so that equipment cannot work normally, and the underground cannot be communicated with the ground; the penetration capability of the similar wireless communication equipment to the soil layer is weak, and multiple layers of relays are needed for transfer; in addition, the similar devices have weak anti-interference capability and poor demodulation sensitivity, can only analyze signals above noise, cannot correctly demodulate weak signals below the noise, and cannot receive the signals once the weak signals are subjected to strong interference from the outside.

The method can be applied to medium-long wave communication, and is suitable for stable and reliable ground wave communication in mountain jungles and tunnel mine areas within dozens of kilometers due to small ground wave propagation attenuation and strong diffraction capability of medium-long waves, so that the blind area of ultra-short wave communication and the dead area of short wave communication can be overcome. Furthermore, the wireless transceiver and the wireless transceiver can establish low-speed message communication within a frequency coincidence range and at a certain distance. The anti-interference wireless communication link can be established between the ground and the ground, between the underground and between the ground and the underground, and can be applied to mines and tunnels to obtain emergency communication with the ground under sudden accidents.

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The wireless transceiver provided by the present application can be applied to the application environment shown in fig. 1. The host can be a 10W device (i.e. transceiver), and then can be equipped with a 1000W power amplifier (i.e. remote power amplifier) to form a 1000W device (i.e. wireless transceiver) to increase the communication distance. The 1000W devices can establish point-to-point contact and can also be used for networking cooperative communication.

In one embodiment, as shown in fig. 2, a wireless transceiver apparatus is provided, which is illustrated by taking the apparatus as an example applied to fig. 1, and includes a transceiver, and a remote power amplifier apparatus connected to the transceiver;

wherein, the microcomputer control module outputs audio signals; the digital processing module adopts up-conversion to process audio signals and outputs radio frequency signals; the radio frequency processing module performs radio frequency amplification on the radio frequency signal and outputs a radio frequency excitation signal; the power amplification module is used for sequentially carrying out power amplification and impedance matching processing on the radio frequency excitation signal, then emitting the radio frequency excitation signal through the antenna, and outputting the processed radio frequency excitation signal; the remote power amplifier sequentially performs power amplification, harmonic filtering and impedance matching on the processed radio frequency excitation signal and then emits the radio frequency excitation signal out of the antenna.

In particular, a transceiver in this application may refer to a communication device in which both the receiving and transmitting portions are mounted in a single housing or chassis. As shown in fig. 2, the transceiver in the present application may include a microcomputer control module, a digital processing module, a radio frequency processing module, and a power amplifier module, which are connected in sequence; the microcomputer control module is respectively connected with the radio frequency processing module, the power amplifier module and the remote power amplifier device; the remote power amplifier device is connected with the power amplifier module; the power amplification module and the remote power amplification device are respectively used for connecting an antenna;

further, as shown in fig. 3, the microcomputer control module in the present application may include a processor (CPU, central Processing Unit), a logic control Chip (CPLD), and a parameter storage chip, and cooperate with a series of interface circuits, and may receive an instruction from a panel, thereby completing a control function of the digital signal Processing module, the power amplifier module, the remote power amplifier device, and the like, and completing a self-checking operation of the wireless transceiver in the present application. In one specific example, the microcomputer control module may receive instructions from the panel and perform control functions for the frequency synthesis module.

The CPLD can be used for completing functions of frequency division, address decoding, chip selection, parallel data port expansion, logic combination and the like. After the CPLD divides the frequency of the system clock, the CPLD respectively provides working clocks for various interface chips and AD/DA conversion chips; address decoding is carried out by combining address lines of the bus, and chip selection signals are provided for various interface chips; 4 eight-bit parallel data ports can be expanded, and the parallel data ports have input and output functions and provide parallel control signals for other modules; while providing a reset signal and an interrupt signal to the system.

The CPU and the panel can communicate by adopting a serial port; the interface level can adopt 485 level, level conversion is carried out through an interface chip, and then the interface chip is sent into a serial port of the single chip microcomputer, so that data communication is realized, and the remote control function of the panel is ensured.

The storage device can be used for storing various current working states, parameters and the like of the wireless transceiver, so that the parameters can be stored when the wireless transceiver is turned off, and the corresponding parameters can be called when the wireless transceiver is turned on next time.

The self-checking function of the wireless transceiver can sample the self-checking signals sent by each unit module through an A/D (analog/digital) conversion device in the microcomputer control module, judge the sampling data through the CPU (central processing unit), realize the self-checking operation of each unit by the wireless transceiver, and report the self-checking operation to a panel to complete result display.

Furthermore, the microcomputer control module in the application can simultaneously complete the amplification function of receiving/transmitting the microphone audio frequency, and provide independent +5V direct current power supplies for the panel and each unit in the transceiver respectively, thereby realizing the remote control on/off function in remote control.

In the application, the Digital processing module receives the audio Signal transmitted from the microcomputer control module, can adopt a transmission channel A/D to sample, adopts a DSP (Digital Signal Processor) to process the obtained Digital Signal, then carries out Digital up-conversion through an up-converter, carries out Digital-to-analog conversion through a D/A device to become the frequency of the radio frequency Signal required by transmission, and outputs the frequency to the radio frequency processing module.

The radio frequency processing module in the application can amplify the radio frequency signal of 200 kHz-1 MHz from the direct up-conversion of the digital processing module, and after enough excitation signals are obtained, the signals are provided for the power amplification module to carry out power amplification. The radio frequency signal is amplified by a corresponding radio frequency amplifier.

In a specific embodiment, as shown in fig. 4, the power amplifier module in the present application may include an antenna tuning module and a power amplifier harmonic module both connected to the microcomputer control module;

In one embodiment, the power amplifier harmonic module may include a power amplifier (not shown in fig. 4, the power amplifier in fig. 4 belongs to a remote power amplifier device), a harmonic filter, and a power detector, which are connected in sequence; the input end of the power amplifier is connected with the radio frequency processing module, and the output end of the power detector is connected with the antenna tuning module; the harmonic filter is connected with the microcomputer control module;

the push amplifier of the power amplifier can comprise a class A amplifier, and the final amplifier of the power amplifier comprises a class AB push-pull power amplifier; the harmonic filter comprises a 5-section five-order elliptic low-pass filter obtained according to the working bandwidth; the working bandwidth is 200 kHz-1 MHz;

the antenna tuning module can comprise an antenna tuning network control circuit connected with the microcomputer control module and an antenna tuning detection circuit connected with the antenna tuning network control circuit;

Specifically, the power amplifier harmonic module may be a 10W power amplifier harmonic module, as shown in fig. 5, the power amplifier harmonic module may include a single-stage fet power amplifier, a harmonic filter, and a forward and reverse power detector;

the push stage of the power amplifier can be an A-class amplifier composed of a radio frequency power amplifier tube and a peripheral circuit thereof, intermodulation distortion is very small, and power gain is 17dB. The +12V voltage transmitted during emission is stabilized to 5V by a three-terminal voltage stabilizing device, and then is used as the bias voltage of the power amplifier tube after being subjected to voltage division by a resistor and a potentiometer.

The final stage amplification of the power amplifier can form an A-B push-pull working mode by two matched MOSFET (metal oxide semiconductor field effect transistor) amplification tubes, so that intermodulation indexes can be guaranteed, the efficiency of the power amplifier can be improved, heat generated during working is reduced, meanwhile, the dual harmonic waves are well inhibited, and the power gain of the final stage power amplifier is 15dB. The +12V voltage transmitted during transmitting is stabilized to +8V by a three-terminal voltage stabilizing device, and then divided by a resistor and a potentiometer, and bias voltage is respectively provided for power amplifier geminate transistors.

And the harmonic filter can be designed into a 5-stage five-order elliptic low-pass filter according to the working bandwidth (200 kHz-1 MHz), as shown in figure 5. And selecting corresponding wave bands according to different working frequencies through the microcomputer control module. The filter inductance selects the hollow inductance wound by a plurality of strands of enameled wires, the Q value of a loop is improved, the loss of the filter is reduced, the wave band control relay selects the magnetic latching relay, the relay can keep the original working state after power failure, and the power consumption of a battery can be reduced.

Further, as shown in fig. 5, the power detection circuit provides ALC detection levels for controlling the output power while providing the power indicative desired level.

In addition, the antenna tuning module may be a 10W antenna tuning module, and the antenna tuning module may include two circuit components, namely an antenna tuning network control circuit and an antenna tuning detection circuit (not shown in fig. 4); the sky tune tuning algorithm and the sky tune network control are realized by a microcomputer control module.

The antenna tuning module has the main functions of matching the impedance of the antenna and the transceiver, so that the antenna and the transceiver can be connected in a matched mode and effectively transmit power from the antenna, and power loss caused by mismatching of the antenna and the transceiver is reduced.

In a specific embodiment, as shown in fig. 4, the remote power amplifier device may include a power amplifier and an antenna tuner both connected to the microcomputer control module; the power amplifier is connected between the power amplifier module and the antenna tuner; the antenna tuner is used for connecting an antenna;

the power amplifier may include a power amplification module and a harmonic filtering module (not shown in fig. 4); the antenna tuner may include an antenna tuning control module and an antenna tuning network module (not shown in fig. 4);

In one embodiment, the power amplification module comprises a class AB power amplifier; the harmonic filtering module comprises a harmonic filtering circuit and a power detection circuit; the antenna tuning network module comprises a current detection circuit and a tuning matching network;

Specifically, the power amplification module of the power amplifier in the remote power amplifier device may be a 1000W power amplification module, wherein the power amplification module may be a single-stage 200 kHz-1 MHz broadband power amplifier, and mainly completes outputting 1000W power, and an excitation signal thereof is generated by a 10W transceiver and output to a 1000W harmonic filter module (i.e., a harmonic filter module) for processing after power amplification is completed.

In a specific example, the power amplification module, i.e. the 1000W power amplification module, may be a class AB power amplifier, and the input, the feedback and the output of the power amplification module are connected by using a wideband transformer, and by design, the operating frequency of the transformer is selected within a range of 200kHz to 1MHz, where the frequency loss is the smallest and the efficiency is the highest.

The input signal is matched with the front stage and the rear stage through a broadband transformer. The power amplifier tube adopts a packaged double-amplifier tube to form an AB push-pull amplifier, can provide better heat dissipation characteristic and better symmetry, and has higher efficiency by being connected with a peripheral circuit. The bias voltage of the power amplifier tube is realized by the output adjustable integrated voltage stabilizing circuit, and the output voltage can be adjusted by the potentiometer to provide stable bias voltage for the power amplifier tube. In order to ensure the stable operation of the power amplifier, a negative feedback circuit is added into the amplifier.

The harmonic wave filtering module can be a 1000W harmonic wave filtering module; the 1000W harmonic filter module can comprise a harmonic filter circuit and a power detection circuit.

The harmonic filter circuit can be designed into a 5-stage five-order elliptic low-pass filter according to the working bandwidth (200 kHz-1 MHz), and the elliptic function filter circuit has the characteristic of steeper roll-off and can cover wider working frequency with fewer wave bands. The filter inductor is formed by winding a hollow core, so that loss caused by magnetic materials can be avoided, and meanwhile, the filter inductor has high stability. The filter bands are divided into five groups, and the frequency division can be referred to in the foregoing (10W power amplifier harmonic module). The selection of the channels of each wave band is realized by controlling the relays of each wave band through a microcomputer control module.

The filter output is connected to a power detection circuit for detecting forward and reverse power levels, and the power detection circuit provides ALC detection level for controlling output power and provides power indication required level. The forward and reverse power detection is realized through a directional coupler, and the radio-frequency signal output by sampling is rectified and filtered through a detection diode and a capacitor and then is output to a radio-frequency processing module as an ALC level to control the output power of 1000W communication equipment.

Further, the antenna tuner may include an antenna tuning control module and an antenna tuning network module; the antenna tuning network module comprises a current detection circuit and a tuning matching network;

specifically, a 1000W automatic antenna tuner (i.e., antenna tuner) may include a 1000W antenna tuning control module (i.e., antenna control module) and a 1000W antenna tuning network module (i.e., antenna tuning network module).

The 1000W day modulation control module is mainly used for realizing a tuning algorithm of 1000W day modulation and controlling the 1000W day modulation network module, and reporting a tuning state to the transceiver. The 1000W day regulation and control module may include a microprocessor (CPU), a programmable GAL (programmable general logic device) device, an a/D conversion chip, and a serial interface chip, as well as peripheral circuits.

The CPU is the core of the sky tune control module and is used for realizing the functions of communication with the transceiver, the operation of an sky tune tuning algorithm program, the control of an sky tune network unit and the like; the serial port interface chip is used for completing level conversion of 232 serial port control signals and realizing remote control from the transceiver to the sky tone; the A/D conversion chip is mainly used for sampling the tuning detection level of the antenna tuning network module, providing the sampling data to the CPU for calculation, and controlling the tuning network to complete the matching work of the antenna; the GAL devices are primarily responsible for performing various logical processes within the cell.

Further, the 1000W day-tuning network module may include a detection circuit (i.e., a current detection circuit) and a tuning matching network. When tuning is started, the host machine outputs a low-power radio-frequency signal, the radio-frequency signal is sampled and rectified and filtered through the detection circuit, and the sampled voltage is output to the antenna control module for processing; the antenna tuning control module calculates the sampling voltage, adjusts network parameters according to a tuning algorithm, and finally achieves impedance matching with the antenna.

It should be noted that, the present application also provides an antenna tuning scheme (which may relate to the antenna tuning module, the antenna tuner, etc. in the foregoing), specifically, the automatic antenna tuner in the present application may include an inductance-capacitance tuning network, an impedance converter, a current detector, a standing-wave ratio detector, an impedance detector, an antenna control unit, and a relay driving circuit, and its main functions are to complete tuning detection, logic control, tuning loop parameter tuning and storage, so that the antenna presents a matching output impedance of 50 Ω at the power amplifier output port to ensure maximum power output and radiation efficiency.

The working frequency band of 1000W communication equipment can be 200 kHz-1 MHz, and for this, the application proposes to make corresponding modifications to the tuning network and the detection circuit to adapt to the new working frequency.

(1) The design principle is as follows: the antenna characteristic of the medium-long wave frequency band is a unimodal curve with only one maximum point, the frequency band is narrow, the characteristic is relatively simple (refer to fig. 6), and based on the characteristic, the antenna tuner of the wireless transceiver is optimally designed.

The power amplifier has the maximum output power under the condition of 50 omega pure impedance load, and the application provides that the power amplifier is matched with an antenna through an antenna tuning network to reach a 50 omega pure impedance state as far as possible.

(2) Hardware principle: as shown in fig. 7, the radio frequency signal firstly passes through the current detector, the detected current is converted into voltage, and then the voltage is sampled by the a/D to be a digital signal which is sent to the single chip microcomputer for corresponding processing, so as to control the sky tone matching network and achieve the best matching effect.

(3) And (3) tuning algorithm: the medium-long wave tuning algorithm related in the application can comprise four parts of coarse tuning, fine tuning and deviation rectifying, impedance transformation and secondary fine tuning. Specifically, the method comprises the following steps:

(1) a coarse adjustment process of the natural frequency;

dividing the total tuning inductance into 15 segments, namely 16 points, 0 (0 muH), 1 (64 muH), 2 (128 muH) \8230; \8230, processing the 16 points by adopting a method of sequentially taking points, finding a maximum point (if the maximum point is in front, the following points are not necessarily taken), and then respectively processing according to the state difference of the maximum point:

a) If the maximum point is the 0 th point, the antenna is inductive or pure resistance, and a first-gear large capacitor is connected; b) Repeating the previous process, and shifting the second gear capacitor if the maximum point is still the 0 th point; c) The foregoing process is repeated.

(2) Fine adjustment of the deviation rectifying process;

the process can adopt a small-step dichotomy to correct the maximum point deviation caused by the access of the impedance converter and improve the tuning precision.

(3) An impedance change process;

this process can be used to accomplish impedance matching.

a) When the detection level of the maximum point is lower than the standard tuning level, the antenna presents high resistance (more than 50 omega), and the impedance is adjusted to be low through the impedance converter; b) When the detection level of the maximum point is higher than the standard tuning level, the antenna presents low resistance (< 50 omega), and the impedance is adjusted to be high through the impedance converter.

(4) Fine adjustment for the second time;

and the fine tuning deviation rectifying process is repeated, so that the tuning is more accurate. Assuming n processing points are needed, which have a single peaked nature, the process of processing the nth point is: a) Taking a reference value corresponding to the nth point, assuming F (n); b) The n reference values are compared with the reference value at the n-1 th point. If F (n) ≧ F (n-1), F (n) is retained and point n +1 is continued. Otherwise, F (n-1) and n-1 are retained.

Above, this application wireless transceiver can use the battery independent utility who is equipped with at random, does not receive external environment restriction, convenient to carry, easy operation, dependable performance. The working frequency range can be 200 KHz-1 MHz, has super-strong anti-interference capability and soil layer penetration capability, and has high efficiency, good stability and strong penetration capability relative to other wireless communication equipment. The device has ultrahigh receiving and transmitting efficiency, low introduced noise and small signal distortion, ensures weak signal demodulation in the maximum range by using the optimal channel quality, and can analyze negative dozens of dB weak signals below the noise, thereby enhancing the signal receiving capacity. The application provides a wireless transceiver based on weak signal demodulation ultrahigh sensitivity, which can correctly receive and transmit minus dozens of dB weak signals below noise, namely minus dozens of dB demodulation sensitivity.

In one embodiment, as shown in fig. 8, a wireless transceiver apparatus is provided, which is illustrated by taking the apparatus as an example applied to fig. 1, and includes a transceiver, and a remote power amplifier apparatus connected to the transceiver;

the transceiver comprises a microcomputer control module, a digital processing module, a radio frequency processing module and a power amplifier module which are connected in sequence; the microcomputer control module is respectively connected with the radio frequency processing module, the power amplifier module and the remote power amplifier device; the remote power amplifier device is connected with the power amplifier module; the power amplification module and the remote power amplification device are respectively used for connecting an antenna;

in a specific embodiment, as shown in fig. 8, the apparatus further includes a frequency synthesis module respectively connected to the microcomputer control module, the digital processing module, and the rf processing module;

In a specific embodiment, the intermediate frequency digitizing circuit is respectively connected with the high-speed modem circuit and the low-speed modem circuit through corresponding electronic switches;

In a specific embodiment, the frequency synthesis module comprises a DDS circuit, a PLL circuit, a loop filter and a voltage controlled oscillator; the PLL circuit includes a programmable device; the DDS circuit is connected with the radio frequency processing module;

In a particular embodiment, the radio frequency processing module may include a transmit path and a receive path;

the transmitting path comprises a first radio frequency amplifier (namely a radio frequency amplifier 1) and a second radio frequency amplifier (namely a radio frequency amplifier 2) which are connected in sequence; the transmitting path also comprises an ALC control circuit and a tuning control circuit; one end of the ALC control circuit is connected with the microcomputer control module, and the other end of the ALC control circuit is respectively connected with the first radio frequency amplifier and the second radio frequency amplifier through the tuning control circuit; the input end of the first radio frequency amplifier is connected with the digital processing module, and the output end of the first radio frequency amplifier is connected with the power amplification module through the second radio frequency amplifier;

Specifically, as shown in fig. 9, the frequency synthesis module in the present application may include a reference clock frequency synthesis module and a local oscillator output frequency synthesis module, and mainly completes frequency synthesis of the reference clocks of the receiving local oscillator signal, the high-speed modem, and the low-speed modem.

1) Receiving a local oscillation signal;

the local oscillation signal frequency Synthesis module can adopt Direct Digital Synthesis (DDS) to directly carry out frequency division output through 16.384MHz, the output frequency is 5.2 MHz-6.0 MHz, after receiving the frequency conversion information of the microcomputer control module, the FPGA controls the frequency division ratio of the DDS, so that the DDS outputs the local oscillation frequency, and the local oscillation frequency is amplified and filtered and then output to the radio frequency processing module.

2) High speed modem and low speed modem reference clock

The frequency synthesis module of the reference clock of the high-speed and low-speed modems can adopt DDS + PLL (Phase Locked Loop). The FPGA is respectively used as a frequency divider and a phase discriminator in a phase-locked loop through internal programs, a reference clock 16.384MHz is divided to be used as a reference frequency of the phase discriminator and is subjected to phase discrimination with the frequency output by the DDS frequency division, a loop filter formed by operational amplifiers outputs voltage-controlled voltage, the voltage-controlled oscillator is controlled to output final frequency, and the final frequency is respectively provided for the DDS as the reference frequency and a modem circuit corresponding to the digital processing module. The frequency dividing ratio of the DDS is controlled by the FPGA.

The frequency synthesis module can also comprise a direct current voltage stabilizing circuit, and can convert +24V into +12V for other modules in the transceiver to use.

Further, as shown in fig. 10, the digital processing module may include an intermediate frequency digitizing part, a high speed modem part, and a low speed modem part;

wherein, the intermediate frequency digitizing section (i.e. the intermediate frequency digitizing circuit) may include:

a transmitting path: the transmitting audio signal from the microcomputer control module is selected by the electronic switch, is sampled by the transmitting channel A/D, and then is sent to the DSP for processing, and then is subjected to digital up-conversion by the up-converter, and is subjected to digital-to-analog conversion by the D/A device to become the frequency of the radio frequency signal required by transmission, and the frequency is output to the radio frequency processing module.

A receiving path: the 5MHZ intermediate frequency signal sent from the radio frequency processing module is converted into a digital signal by an A/D conversion chip, then the digital signal is subjected to digital down conversion by a down converter, and after real component data and orthogonal component data are sent to a DSP for processing, the digital-to-analog conversion is completed through D/A to form an audio signal to be output.

Further, the high-speed modem part (i.e., the high-speed modem circuit) may include:

an emission part: the digital information sent by the microcomputer control module through the serial port is received by the serial port expansion chip and then is sent to the digital signal processing chip (DSP) for digital modulation, then is converted into an analog audio signal through D/A conversion, and finally enters the intermediate frequency digital part circuit for processing through the switch according to the selection of the working state.

A receiving section: the received audio signal generated by the intermediate frequency digitalization part enters into A/D conversion after being selected by an electronic switch, and then is digitally demodulated by a DSP chip, and the generated digital signal is provided to a microcomputer control module for processing by a serial port.

Further, the low-speed modem part (i.e., the low-speed modem circuit) may include:

an emission part: the digital information sent by the microcomputer control module through the serial port is received by the serial port expansion chip and then sent to the digital signal processing chip (DSP) for digital modulation, then converted into an analog audio signal through D/A conversion, selected by the switch according to the working state and finally sent to the intermediate frequency digital part circuit for processing.

As shown in fig. 11, the transmission path of the rf processing module in the present application may include: the device comprises a two-stage class A field effect transistor amplifying circuit, an ALC (Automatic Level Control) Control circuit and a tuning Control circuit; the receiving path of the rf processing module may include: AGC (Automatic Gain Control) Control circuit, balance mixer and intermediate frequency amplifying circuit.

In the transmitting state: the power control of the wireless transceiver is realized by sampling ALC control voltage obtained by a harmonic output end, wherein the power level control of the wireless transceiver is realized by controlling the working point of an ALC circuit by a microcomputer control module.

In the receiving state: the 200 kHz-1 MHz radio frequency signal from the antenna firstly filters out-of-band useless signals through a low-pass filter at the front end of the radio frequency, then enters a frequency mixer, generates 5MHz intermediate frequency signals after being mixed with the local oscillation signal from the frequency synthesis module, and then enters the intermediate frequency amplification and narrow-band filtering to be output to a digital processing module. The intermediate frequency amplifying circuit comprises two stages of amplifier circuits with gain control, and the gains of the two stages of amplifying circuits are respectively controlled by sampling the amplitude of the intermediate frequency output signal, so that the receiving AGC control of the wireless transceiver is realized.

In a specific embodiment, as shown in fig. 8, the wireless transceiver device of the present application may further include a panel; the panel may interface with the transceiver through a communication connector or communication device.

Specifically, as shown in fig. 12, the panel may be a remote control panel; the remote control panel may include a main control board, a communication connector, a battery, and a charger. When the remote control panel is used for remote control at a short distance or fixedly connected with the transceiver, the remote control panel obtains electricity from the transceiver through the communication connector or the communication equipment interface and completes the communication function.

As shown in fig. 12, the remote control panel may include a main control panel, a display and a keyboard, a voice code board, a power supply board, and a K-port board (optional). The main control board is a control center of the panel, and other components are connected with the main control board. It is mainly composed of a multilayer circuit board and various components. The circuit board is externally connected to: keyboard, display, sound code voice board, buzzer, RS-232 computer/fax machine interface, RS-485 interface and earphone/microphone set interface.

The power supply module mainly completes the power supply function of the whole system, and can also adjust the power supply voltage of the LED liquid crystal screen through the message of the main control panel to control the contrast of the LED liquid crystal screen.

Keyboard module on panel pass through I ² The C bus is connected with the main control board. And converting the input keyboard signals into I2C bus signals, and handing the signals to the main control module for processing.

The display module is connected with the main control board through a 4-bit data bus, field and line synchronization, an enabling signal and a power supply board provide power for the display module. The sound code speech board and the K port board interface are connected with the main control board through a serial bus. Meanwhile, the main control board provides an RS-485 interface and an RS-232 computer/fax interface for the outside, and the communication function with the outside is completed.

It should be noted that the functions and structures of some of the modules involved in this embodiment may refer to the discussion in the foregoing embodiments, and are not described herein again.

By the method, the matching state between the circuits and the signal control flow can be optimized to be the optimal state; the battery that this application can use random outfit independently uses, does not receive external environment restriction, convenient to carry, easy operation, dependable performance. The working frequency range can be 200 KHz-1 MHz, has super-strong anti-interference capability and soil layer penetration capability, and has high efficiency, good stability and strong penetration capability relative to other wireless communication equipment. The device has ultrahigh receiving and transmitting efficiency, low introduced noise and small signal distortion, ensures weak signal demodulation within the maximum range by optimal channel quality, and can analyze minus dozens of dB weak signals below noise, thereby enhancing the signal receiving capacity. The application provides a wireless transceiver based on weak signal demodulation ultrahigh sensitivity, which can correctly receive and transmit minus dozens of dB weak signals below noise, namely minus dozens of dB demodulation sensitivity.

In one embodiment, as shown in fig. 8, a communication device is provided, which may include the above-mentioned wireless transceiving apparatus.

In one embodiment, a signal processing method of a radio transceiver is provided, which is used for the radio transceiver and may include the following steps:

receiving an input signal;

multiplying a local Chirp signal by an input signal, outputting a correlation value, and confirming a synchronization moment until a maximum peak value of the correlation value appears;

demodulating and judging the MFSK signal by adopting optimal incoherent detection; the step of demodulating and deciding the MFSK signal by adopting the optimal noncoherent detection comprises the following steps: and acquiring the integral sum of the input signal and the orthogonal carrier of each path in each local path, determining the square sum of the sine and cosine branch integrals, comparing and judging, and determining the frequency corresponding to the output maximum branch as the sending frequency.

Specifically, regarding signal processing, the present application may employ a Chirp synchronization scheme, an MFSK (multiple frequency shift keying) demodulation scheme, a coding and decoding scheme, and an antenna tuning scheme; the antenna tuning scheme has been introduced in the foregoing, and is not repeated herein.

For the Chirp synchronization scheme, the wireless transceiver of the present application may use a Chirp signal with good autocorrelation characteristics as a system synchronization signal, and implement Chirp synchronization by using an optimal coherent detection technique, as shown in fig. 13. The external signal is input through the receiver (i.e. input signal), multiplied by the local Chirp signal, and the correlation value is output through the integral correlator. When the call synchronization Chirp signal is completely aligned with the local Chirp signal, the integral correlator outputs the maximum peak value, and the time can be used as the synchronization time.

In order to further improve the synchronization performance of the Chirp signal and overcome the problem of phase sensitivity existing in optimal coherent detection, the application provides that dual Chirp synchronization and envelope smoothing technologies can be adopted.

For a Chirp signal, a synchronization error has a large influence on a system bit error rate; as shown in FIG. 14, when the polarities of the adjacent symbols do not alternate, the phase error of the synchronization signal does not affect the integrated energy value of the sampling point where the sampling value is still the whole symbol energy E, t in FIG. 14 (c) ₄ And t ₆ This is the case for the moment.

However, when there is a data change in adjacent symbols, the phase error of the bit synchronization signal reduces the integral energy of the sampling point, and the waveform shown in fig. 14 (c) is viewed from t ₁ To t ₃ One symbol time T, the second symbol signal is 0, if there is no phase error, from T ₁ Integral of the '0' signal up to t ₃ The sample value should be-E; but now due to synchronization error T _c From t ₁ To t ₂ The integral value of this time is zero, so that the sampling point t ₃ Is only (T-2T) _c ) The integral value over time. Since the integrated energy is proportional to time, the integrated energy is reduced to (1-2T) _c /T)E。

Generally, the probability of a random binary digital signal having data variations and no variations in adjacent symbols is approximately 1/2 each. The portion of the signal where no data changes in adjacent symbols is unaffected due to the integral of the sampling points. The error rate can still be calculated by using an error rate formula; and for the part of the signal with data change of the adjacent code element, the code element energy E in the original formula should be (1-2T) _c T) E instead. Thus, taking binary signals as an example, the bit error rate formula when there is a phase error in the present application may be:

for the MFSK demodulation scheme, as shown in fig. 15, the present application proposes to perform demodulation and decision of the MFSK signal by using optimal non-coherent detection.

Specifically, the integral sum of the input signal and the orthogonal carrier of each path of the local 16 paths can be obtained, the square sum of the sine and cosine branch integrals is calculated, the judgment is made, and the frequency corresponding to the output maximum branch is the sending frequency.

The method and the device can adopt triple time-frequency division and equal gain combining technologies to overcome lightning interference and single frequency interference, and simultaneously provide a soft decision scheme for improving the single frequency interference resistance. Specifically, the present application proposes to employ MFSK as a modulation scheme in a communication device. MFSK modulation, however, has a channel adapted to a low modulation rate and a severe multipath delay, and can use a non-linear power amplifier without causing a performance degradation.

In one example, the signal received at the MFSK demodulation end is considered to be a random phase signal under gaussian noise conditions, and the best reception form under such conditions is given below.

First, the analysis is performed by taking a 2FSK (binary digital Frequency modulation, i.e., binary Frequency Shift Keying) signal having a random phase as an example. Let the two transmitted phase-following signals be:

wherein

And

in the interval [0,2 π]And uniformly distributed.

And

duration T and equal energy, i.e.:

after adding gaussian white noise, the signal at the input of the receiver is:

in order to determine the likelihood function of the receiver input for two signals, the likelihood function at a given phase is determined

And

with respect to the conditional likelihood function of y (t) under the condition (2)

And

namely that

Using probability theory, to eliminate the phase

The influence of (2) can be obtained by averaging the influence of (2). After a series of transformations, s appears ₁ Likelihood function of y (t) at (t)

Comprises the following steps:

likewise, the occurrence of s ₂ Likelihood function of y (t) at (t)

Comprises the following steps:

wherein:

suppose a transmitted signal

And

are equal, and a decision is made on the observed spatial sample using a maximum likelihood criterion, i.e.

Is judged as ₁ 、

Is judged as ₂ The following can be obtained: m is a group of ₁ >M ₂ Is judged as ₁ 、M ₁ <M ₂ Is judged as ₂ This is to say that the optimal incoherent detection completes the demodulation and decision of the MFSK signal. By adopting the demodulation method, the receiving error rate of the system can be reduced to the minimum.

Aiming at the coding and decoding scheme, a Hybrid Error Control technology (HEC) of forward Error correction and feedback retransmission is adopted, and the reliability of system communication is further improved. Specifically, the application provides that forward error correction is realized by adopting a coding technology 'modular 16,0 check, rectangular code' (short for 'rectangular code') which is suitable for the characteristics of an underground communication channel.

The encoding and decoding scheme adopting the rectangular code can correct one character error and partial two character errors. In the rectangular code, the size of the matrix can be adjusted according to the length of the message, so that the problem of zero filling in block codes is avoided. Therefore, the method and the device can adapt to shorter messages.

The emergency system can guarantee reliable information transmission and improve timeliness of the system as much as possible. Specifically, three communication rates are designed, that is, when the channel condition is good, a higher communication rate is used for communication, and when the channel condition is poor, a lower communication rate is used for communication. Since the larger the matrix of the modulo 16 rectangular coding is, the higher the code rate thereof is, the lower the error correction and detection capability is. Conversely, the smaller the matrix is, the stronger the error correction and detection capabilities of the matrix are, and the code rate is reduced accordingly. Therefore, according to the characteristics of the rectangular code, the size of the coding matrix also selects different upper limit values according to the quality of the channel (the upper limit value is determined mainly by the condition of a longer message). Namely: under the condition of good channel and high speed (the error rate is lower at the moment), a larger matrix (suitable for a long message) is adopted, and under the condition of poor channel and the slowest speed, in order to ensure that the application has stronger vitality, a small matrix with stronger error correction capability is adopted for coding, the long message is divided into a plurality of sections, and each section forms a small matrix, so that the application can still carry out communication under the condition of worse environment (the communication at the moment is replaced by sacrificing the code rate).

In the signal processing, the present application proposes to adopt a Chirp synchronization scheme, an MFSK modulation and demodulation scheme, and the like; on the one hand, the battery that this application can use the random outfit is independent to be used, does not receive external environment to restrict, convenient to carry, easy operation, dependable performance. The working frequency range of the application can be 200 KHz-1 MHz, and the device has super-strong anti-interference capability and soil layer penetration capability, and has high efficiency, good stability and strong penetration capability compared with other wireless communication devices. The device has ultrahigh receiving and transmitting efficiency, low introduced noise and small signal distortion, ensures weak signal demodulation within the maximum range by optimal channel quality, and can analyze minus dozens of dB weak signals below noise, thereby enhancing the signal receiving capacity. The application provides a wireless transceiver based on weak signal demodulation ultrahigh sensitivity, which can correctly receive and transmit minus dozens of dB weak signals below noise, namely minus dozens of dB demodulation sensitivity.

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

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

Claims

1. A wireless transceiver device is characterized by comprising a transceiver and a remote power amplifier device connected with the transceiver;

the transceiver comprises a microcomputer control module, a digital processing module, a radio frequency processing module and a power amplifier module which are connected in sequence; the microcomputer control module is respectively connected with the radio frequency processing module, the power amplifier module and the remote power amplifier device; the remote power amplifier device is connected with the power amplifier module; the power amplifier module and the remote power amplifier are respectively used for connecting an antenna; the remote power amplifier device comprises a power amplifier and an antenna tuner which are connected with the microcomputer control module; the power amplifier is connected between the power amplifier module and the antenna tuner; the antenna tuner is used for connecting an antenna; the power amplifier comprises a power amplification module and a harmonic filtering module; the antenna tuner comprises an antenna tuning control module and an antenna tuning network module; one end of the power amplification module is connected with the power amplifier module, and the other end of the power amplification module is connected with one end of the harmonic wave filtering module; the other end of the harmonic wave filtering module is connected with one end of the space modulation network module; the other end of the sky tune network module is connected with the sky tune control module; the microcomputer control module is respectively connected with the antenna modulation control module, the power amplification module and the harmonic wave filtering module;

wherein the microcomputer control module outputs an audio signal; the digital processing module processes the audio signal by adopting up-conversion and outputs a radio frequency signal; the radio frequency processing module performs radio frequency amplification on the radio frequency signal and outputs a radio frequency excitation signal; the power amplification module is used for sequentially carrying out power amplification and impedance matching on the radio frequency excitation signal, then emitting the radio frequency excitation signal through an antenna, and outputting the processed radio frequency excitation signal; and the remote power amplifier device sequentially performs power amplification, harmonic filtering and impedance matching on the processed radio frequency excitation signal and then emits the radio frequency excitation signal out of the antenna.

2. The wireless transceiver device of claim 1, further comprising a frequency synthesis module connected to the microcomputer control module, the digital processing module, and the rf processing module, respectively;

the digital processing module comprises an intermediate frequency digitizing circuit, a high-speed modem circuit and a low-speed modem circuit, wherein the high-speed modem circuit is respectively connected with the microcomputer control module and the intermediate frequency digitizing circuit, and the low-speed modem circuit is respectively connected with the microcomputer control module and the intermediate frequency digitizing circuit; the intermediate frequency digitization circuit is connected between the microcomputer control module and the radio frequency processing module;

the frequency synthesis module outputs a high-speed modulation and demodulation clock frequency to the high-speed modem circuit and outputs a low-speed modulation and demodulation clock frequency to the low-speed modem circuit according to a reference clock frequency;

the microcomputer control module outputs frequency conversion information; when the frequency synthesis module receives the frequency conversion information, the frequency synthesis module outputs a local oscillation signal to the radio frequency processing module; and the radio frequency processing module processes the radio frequency signal from the antenna based on the local oscillation signal.

3. The wireless transceiver of claim 2, wherein the if digitizing circuit is connected to the high-speed modem circuit and the low-speed modem circuit through corresponding electronic switches;

the microcomputer control module outputs digital information; the high-speed modem circuit or the low-speed modem circuit processes the digital information and outputs an analog audio signal; the intermediate frequency digitization circuit receives the analog audio signal through an electronic switch and outputs a radio frequency signal;

the input end of the first A/D converter is connected with the microcomputer control module, and the output end of the first A/D converter is connected with one end of the digital up-converter through the DSP chip; the other end of the digital up-converter is connected with the input end of the second D/A converter; and the output end of the second D/A converter is connected with the radio frequency processing module.

4. The wireless transceiver of claim 2, wherein the frequency synthesis module comprises a DDS circuit, a PLL circuit, a loop filter, and a voltage controlled oscillator; the PLL circuit includes a programmable device; the DDS circuit is connected with the radio frequency processing module;

one end of the programmable device is connected with the microcomputer control module, and the other end of the programmable device is connected with the DDS circuit; the loop filter is connected between the DDS circuit and the voltage-controlled oscillator; the voltage-controlled oscillator is connected with the high-speed modem circuit and the low-speed modem circuit respectively.

5. The transceiver of any one of claims 2 to 4, wherein the RF processing module comprises a transmit path and a receive path;

the receiving path comprises a balanced mixer and an intermediate frequency amplifying circuit which are connected in sequence; the intermediate frequency amplifying circuit comprises an AGC control circuit, an intermediate frequency filter and an intermediate frequency amplifier which are connected with the AGC control circuit; the first input end of the balanced mixer is used for being connected with an antenna, the second input end of the balanced mixer is connected with the frequency synthesis module, and the output end of the balanced mixer is connected with the input end of the intermediate frequency amplifier through the intermediate frequency filter; and the output end of the intermediate frequency amplifier is connected with the digital processing module.

6. The wireless transceiver of claim 1, wherein the power amplifier module comprises an antenna tuning module and a power amplifier harmonic module both connected to the microcomputer control module;

the input end of the power amplifier harmonic module is connected with the radio frequency processing module, and the output end of the power amplifier harmonic module is connected with the antenna tuning module; the output end of the antenna tuning module is connected with the remote power amplifier device and is used for being connected with an antenna.

7. The wireless transceiver device of claim 6,

wherein the push amplifier of the power amplifier comprises a class A amplifier, and the final amplifier of the power amplifier comprises a class AB push-pull power amplifier; the harmonic filter comprises a 5-section five-order elliptic low-pass filter obtained according to the working bandwidth; the working bandwidth is 200 kHz-1 MHz;

the antenna tuning detection circuit samples, rectifies and filters the radio frequency excitation signal, and transmits the radio frequency excitation signal to the antenna tuning network control circuit for impedance matching.

8. The wireless transceiver of claim 1, wherein the power amplification module comprises a class AB power amplifier; the harmonic filtering module comprises a harmonic filtering circuit and a power detection circuit; the antenna tuning network module comprises a current detection circuit and a tuning matching network;

the current detection circuit samples, rectifies and filters the radio frequency signal output by the power detection circuit and outputs a sampling voltage; and the antenna control module processes the sampling voltage and adjusts the network parameters of the tuning matching network by adopting a tuning algorithm so as to carry out impedance matching.

9. The transceiver of claim 1, further comprising a faceplate;

the panel is connected to the transceiver through a communication connector or a communication device interface.

10. The radio transceiver of claim 1, wherein the radio transceiver is configured to receive an input signal, multiply the input signal by a local Chirp signal, and output a correlation value until a synchronization timing is confirmed when a maximum peak of the correlation value occurs; demodulating and judging the MFSK signal by adopting optimal noncoherent detection; the wireless transceiver is used for acquiring the integral sum of the input signal and the orthogonal carrier of each path in each local path, determining the square sum of the sine and cosine branch integrals, comparing and judging, and determining the corresponding frequency of the output maximum branch as the sending frequency.

11. A communication device, characterized in that it comprises a radio transceiver device according to any one of claims 1 to 10.