CN212137667U

CN212137667U - Medium-high frequency transceiving system

Info

Publication number: CN212137667U
Application number: CN202020442750.5U
Authority: CN
Inventors: 张�林; 李亮; 朱健; 金梁; 黄文波
Original assignee: Suzhou Xinyangsheng Technology Co ltd
Current assignee: Suzhou Xinyangsheng Technology Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-11
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses a well high frequency receiving and dispatching system, include: a display control unit; a main control unit; a power amplifier module; an LNA module; a day adjustment module; a transceiver module; and an on-duty module. The utility model provides a medium-high frequency receiving and transmitting system, the receiving and transmitting module is separated from the on duty module, the on duty system can receive the message to the on duty channel while the receiving and transmitting module receives the signal, and the receiving and transmitting module and the on duty module are not interfered with each other; moreover, the transceiver module and the watch module adopt the same circuit and design, and can be replaced mutually in emergency, so that the reliability of the system in emergency is improved; the system adopts a modular design mode, has a clear structure and is convenient to produce and maintain; meanwhile, the system adopts a fully digital signal processing unit, so that the receiving sensitivity of the system has higher consistency.

Description

Medium-high frequency transceiving system

Technical Field

The utility model relates to a well high frequency receiving and dispatching technique, especially a novel well high frequency receiving system belong to wireless communication technical field.

Background

The Global Maritime Distress and Safety System (GMDSS) is a global integrated communication network system complying with the international maritime search and rescue convention in 1979, and the GMDSS is implemented to guarantee the safety of maritime life and property to the maximum extent. When a distress event occurs to a marine ship, the GMDSS system can enable a shore search and rescue organization (SAR) and other ships nearby the distress ship to immediately receive an alarm of the distress ship and carry out coordinated rescue with shortest time delay. At the same time, the system can broadcast marine navigation safety information (navigation warning, weather forecast and other emergency and safety information) and provide necessary emergency, safety communication and conventional communication services for the ship.

The GMDSS is composed of four subsystems, namely an international mobile satellite communication (Inmarsat) system, a ground communication system, a positioning and locating system and a marine safety information broadcasting system. Wherein the ground communication system mainly comprises: medium-high frequency radio stations and terminal equipment thereof, VHF and VHF-DSC equipment.

The medium-high frequency radio station mainly has the functions of utilizing the medium-high frequency transceiver and the terminal equipment thereof to realize the medium-distance and long-distance distress alarm and distress communication, emergency call and emergency communication, safe call and safe communication, daily call and daily communication and the automatic attendance of MF/HFDSC distress and safe frequency.

The main communication modes of the medium-short wave combined radio station include Digital Selective Call (DSC), wireless Telephone (TEL) and radio transmission (RadioTelex); a radiotelephone is also called Single Side Band (SSB), and radio transmission is also called narrowband direct lettering telegraph communication (NBDP). Maritime radiotelephone communications typically employ a single sideband upper band for communication, rather than amplitude modulated communication. The single-side band communication is used, carrier waves are suppressed, bandwidth and transmission power are saved, and the anti-interference capability is strong. The radio transmission communication and the digital selective paging adopt FSK modulation on the terminal, and a frequency modulation mode is used in a receiving and transmitting channel, so that the communication frequency band is narrow, the automation is high, the anti-interference capability is strong, and the communication speed is high. The traditional medium-high frequency transceiving system is complex in system structure, transceiving and guarding are carried out in a narrow band, and an guarding channel outside the narrow band cannot be considered in the communication process. In addition, the traditional schemes are all integrated schemes, the circuit structure is very complex, unpredictable potential risks exist in the process of debugging and volume production of the medium-high frequency transceiving system, and the scheme cost is high. Therefore, it is significant to design a low-cost, modular, wide-passband medium-high frequency transceiver system. The transceiver module and the on-duty module are separated from each other, so that the on-duty system can receive messages from the on-duty channel while receiving signals from the transceiver module, and the messages are not interfered with each other. When the transceiver module and the watch module adopt the same circuit and design, the transceiver module and the watch module can be replaced with each other in emergency, so that the reliability of the system in emergency is improved. The system adopts a modular design mode, so that the structure of the system is clear, and the production and maintenance are convenient. Meanwhile, a fully digital signal processing unit can be adopted to ensure that the receiving sensitivity of the system has higher consistency.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a solution of well high frequency receiving and dispatching system uses the modularized design, adopts receiving and dispatching and the value to keep apart the technique for the system is convenient for maintain and has higher sensitivity uniformity.

In order to solve the above technical problem, the utility model provides a well high frequency transceiver system, this system includes:

the display control unit is connected with the main control unit, configures other units and modules through a CAN bus, realizes the acquisition and the playing of voice data, converts signals into message information by using message services, and provides a user interaction interface;

the main control unit is connected with the power amplification module, the filtering module, the transceiving module and the watch module, receives parameters and instructions from the CAN bus, and generates control signals and communication data for other modules through the SPI bus, the serial port and the IO pin;

the power amplification module is connected with the transceiving module and the filtering module and is used for amplifying the power of the analog signal to be transmitted so as to generate a corresponding power signal;

the LNA module is connected with the transceiving module and the filtering module and is used for carrying out low-noise amplification on the received signals received by the transceiving antenna;

the filtering module is connected with the space modulation module and is used for selecting and switching frequency bands of transmitting and receiving signals, collecting input power signals and sending the input power signals to the main control unit for detection;

the antenna modulation module is matched with the impedance of the receiving and transmitting antenna;

the receiving and transmitting module is used for demodulating and modulating the communication signals related to the medium-high frequency service, wherein the communication signals include SSB voice, FSK signals and CW signals;

and the on-duty module is connected with the on-duty antenna and is used for receiving messages of the on-duty channel with the specified frequency.

The display control unit comprises: the display screen displays system content, interactive information, messages and the like; the display control MCU is used for processing related modules and signals in the display control unit and comprises touch acquisition, button acquisition, audio acquisition, display bus control, a communication bus and the like; the display control CAN communication module converts a display control MCU communication bus into standard CAN bus communication, thereby effectively ensuring the transmission distance and quality of communication; the touch module realizes touch-control touch interaction, so that system interaction is simpler and more humanized; the interactive button realizes entity key interaction, and comprises a power on/off device, an emergency button, a volume knob and the like; the voice CODEC is used for realizing the collection and coding of audio and the phonetization playing of digital information; the microphone is used for carrying out analog conversion on the voice; and the loudspeaker is used for playing sound to the outside.

The main control unit includes: the main control CAN communication module converts data from the CAN bus into communication data and instruction information and transmits the communication data and the instruction information to the main control MCU; the master control MCU analyzes the communication data according to a private communication protocol and then generates control signals and communication data for other modules through the SPI bus, the serial port and the IO pin; and the FRAM memory is used for storing system-related configuration information and instructions.

The power amplifier module includes: the power supply module is used for carrying out efficient and stable low ripple voltage on the power amplification module; the 1-stage power amplifier is used for carrying out 1-stage amplification on the transmitted signal and amplifying the signal to a certain degree for subsequent continuous amplification; the 2-stage power amplifier is used for carrying out 2-stage amplification on the signal output by the 1-stage power amplifier and amplifying the signal to a certain degree for subsequent continuous amplification; the 3-stage power amplifier is used for amplifying the signal output by the 2-stage power amplifier in 3 stages so as to generate a power signal meeting the requirement of transmitting power; and the temperature detection is used for detecting the temperature of the 3-level power amplifier, so that the power amplifier module can be protected from over-temperature, and the power amplifier module is prevented from being damaged due to overheating.

The LNA module is used for amplifying the received signal and outputting a received amplified signal.

The filtering module includes: the receiving and transmitting switching module is used for switching the receiving and transmitting working states of the system and switching the transmitting channel and the receiving channel; the filter matching network array is used for realizing filter matching aiming at different frequency bands; and the bidirectional power detection module is used for carrying out bidirectional acquisition on the input power signal so as to evaluate the quality of the power signal.

And the antenna modulation module is used for carrying out impedance matching with the transmitting and receiving antenna.

The transceiver module is the same as the on-duty module, and the transceiver module or the on-duty module includes: the power management module is used for generating power required by each unit in the system; the transmitting unit generates a corresponding analog signal according to the data; a receiving unit that digitally samples a received signal; the low-power amplification module is used for amplifying the analog signal from the transmitting unit to generate a transmitting signal; and the FPGA signal processing unit is used for performing SSB or 2FSK demodulation on the digitally sampled signal according to a signal demodulation algorithm, and performing 2FSK modulation on the digital signal or SSB modulation on SPI bus data.

The FPGA signal processing unit in the transceiver module or the watch module further comprises: the medium-high frequency demodulation module is used for carrying out 2FSK demodulation on the digitized signals according to an algorithm and outputting demodulated digital signals, or carrying out SSB demodulation on the digitized signals according to the algorithm and outputting demodulated voice signals through an SPI bus; and the medium-high frequency modulation module generates a 2FSK analog signal of a designated frequency point according to the modulation digital signal or generates an SSB analog signal of the designated frequency point according to the modulation of a voice signal transmitted by the SPI bus.

The medium-high frequency demodulation module in the FPGA signal processing unit further comprises: 1 SSB receiving frequency register for setting frequency point of SSB demodulation/CW demodulation; the system comprises 5 multipliers, wherein two multipliers are used for carrying out digital down-conversion on a sampling signal during FSK demodulation, two multipliers are used for carrying out quadrature demodulation on the signal during FSK demodulation, and the other multiplier is used for carrying out digital down-conversion on the sampling signal during SSB demodulation; synthesizing 2 DDSs, wherein one DDS is used for generating sine and cosine signals corresponding to the FSK demodulation frequency point, and the other DDS is used for generating sine or cosine signals corresponding to the SSB demodulation frequency point; 3 CIC extraction, wherein two CIC extraction are used for extracting and filtering the data after digital down-conversion during FSK demodulation, and the other CIC extraction is used for extracting and filtering the data after digital down-conversion during SSB demodulation; two of the 3 FIR band-pass filters are used for performing band-pass filtering on the signal extracted by the CIC during FSK demodulation to obtain a baseband signal in a required corresponding frequency band, and the other one is used for performing band-pass filtering on the signal extracted by the CIC during SSB demodulation to obtain a voice signal in the required corresponding frequency band; 1 SSB signal intensity calculating module, which is used to calculate the intensity of the SSB signal received currently; 1 SSB receiving buffer used for queue buffer of voice data demodulated by SSB; 1 SSB receiving RSSI register for temporarily storing the currently received SSB signal strength for external reading; 1 clock frequency division module, which is used for generating the clock needed by the delayer by frequency division of the clock signal during FSK demodulation; 2 time delay units for time delay and temporary storage of band-pass filtered signals during FSK demodulation; 1 adder, which is used for carrying out quadrature demodulation on the signals after band-pass filtering during FSK demodulation; 1 synchronous decision, which is used for ensuring the correctness and synchronism of demodulated data during FSK demodulation; 1 FSK signal intensity calculating module, which is used for calculating the intensity of the FSK signal currently received; 1 FSK receiving frequency register for setting frequency point of FSK demodulation; 1 FSK receiving RSSI register for temporarily storing the currently received FSK signal intensity for external reading; and 1 FSK demodulation threshold register which is written by the outside and stores a threshold value for FSK demodulation.

The medium-high frequency modulation module in the FPGA signal processing unit further comprises: 1 SSB transmitting buffer memory used for queue buffer memory of SSB voice data to be modulated; 3 CIC interpolation, wherein one CIC interpolation is used for increasing the signal sampling rate of the first stage needing digital up-conversion to perform data interpolation when SSB modulation is performed, and the other two CIC interpolation are used for further increasing the signal sampling rate of the second stage needing digital up-conversion to perform data interpolation when SSB modulation is performed; two of the 6 multipliers are used for carrying out digital up-conversion on a baseband signal during FSK modulation, two multipliers are used for carrying out primary digital up-conversion on voice data during SSB modulation, and the other two multipliers are used for secondary digital up-conversion during SSB modulation; synthesizing 3 DDSs, wherein one DDS generates 1K +/-85 Hz sine and cosine baseband signals required by FSK modulation, one DDS generates sine and cosine signals corresponding to first-stage digital up-conversion during SSB modulation, and the other DDS generates sine and cosine signals corresponding to second-stage, CW modulation or FSK modulation required by SSB modulation; 1 upper sideband filtering, namely performing single sideband filtering on a signal after voice data is subjected to first-stage up-conversion during SSB modulation to obtain a single sideband signal; 2 adders, one of which is used for synthesizing the modulated FSK modulation signal in the FSK mode and the other is used for synthesizing the modulated SSB modulation signal in the SSB mode; 1 CW transmission control for modulation of a key signal; 1 mode selector, according to the working mode selecting the modulation signal to be outputted; 1 power control, according to the power parameter, adjusting the amplitude of the modulation signal; 2 registers for temporarily storing DDS synthesis parameters corresponding to 0.915KHz and 1.085KHz respectively; 1 selector (synchronous at 100 bps) for selecting the parameters to be synthesized by DDS according to the FSK digital signal to be modulated; 3 transmission registers, one of which is used for storing a transmission mode, one of which is used for storing a transmission frequency, and the other of which is used for storing transmission power; and the 1 parameter calculation module is used for calculating the parameters required by the corresponding frequency synthesis according to the values of the transmission registers and the modes.

Compared with the prior art, the utility model has the following advantage: the receiving and sending module and the on-duty module are separated from each other, and the on-duty system can receive messages received by the on-duty channel while receiving signals by the receiving and sending module, and the messages are not interfered with each other; moreover, the transceiver module and the watch module adopt the same circuit and design, and can be replaced mutually in emergency, so that the reliability of the system in emergency is improved; the system adopts a modular design mode, has a clear structure and is convenient to produce and maintain; meanwhile, the system adopts a fully digital signal processing unit, so that the receiving sensitivity of the system has higher consistency.

Drawings

Fig. 1 is a schematic structural diagram of a medium-high frequency transceiving system provided by the present invention;

fig. 2 is a schematic diagram of a display control unit in a medium-high frequency transceiving system according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a main control unit in a medium-high frequency transceiving system according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a specific implementation manner of a power amplifier module in a medium-high frequency transceiving system provided by the present invention;

fig. 5 is a schematic diagram of a specific implementation of a filtering module in a medium-high frequency transceiving system provided by the present invention;

fig. 6 is a schematic diagram of an embodiment of a transceiver module or an on-duty module in a medium-high frequency transceiver system provided by the present invention;

fig. 7 is a schematic structural diagram of an FPGA signal processing unit in a transceiver module or an on-duty module of a medium-high frequency transceiver system provided by the present invention;

fig. 8 is a schematic structural diagram of a medium-high frequency demodulation module in an embodiment of a medium-high frequency transceiving system provided in the present invention;

fig. 9 is a schematic structural diagram of a medium-high frequency modulation module in an embodiment of a medium-high frequency transceiving system provided by the present invention.

Detailed Description

The following description and illustrations of the invention in full detail is made with reference to the accompanying drawings by way of an exemplary embodiment of the invention:

as shown in fig. 1, a medium-high frequency transceiving system 100 includes: the digital television comprises a display control unit 101, a main control unit 102, a power amplifier module 103, an LNA module 104, a filtering module 105, a time modulation module 106, a transceiver module 107 and an on-duty module 108.

The display control unit 101 configures other units and modules through the CAN bus, so as to realize the collection and playing of voice data, convert signals into message information by using message service, and provide a user interaction interface. For example, the display and control unit 101 acquires voice through a microphone and a voice CODEC, digitizes the voice, and transmits voice data to the main control unit 102 through the CAN bus; SSB demodulated voice data from the main control unit 102 is received from the CAN bus and output through the CODEC and the loudspeaker; the display control unit 101 configures parameters such as a transmitting and receiving mode, a transmitting and receiving frequency and the like of the system to the main control unit 102 through the CAN bus.

And the main control unit 102 receives parameters and instructions from the CAN bus, and generates control signals and communication data for other modules through the SPI bus, a serial port and IO pins. For example, after receiving the voice data from the CAN bus and the SSB operating mode/transmission frequency and other instructions, the SPI bus transmits the voice data to the transceiver module 107, and the transceiver module is set by the serial port to perform SSB modulation transmission operation at the frequency point corresponding to the transmission frequency; receiving an SSB demodulation data packet request instruction from the CAN bus, reading the SSB demodulated voice data from the transceiver module 107 through the SPI bus, and sending the data to the display and control unit 101 through the CAN bus for processing; after receiving an FSK data packet and an FSK operating mode/transmission frequency instruction from the CAN bus, a digital signal to be FSK modulated is input to the transceiver module 107 through the IO pin, and the transceiver module is set through the serial port to perform an FSK modulation transmission operation at a frequency point corresponding to the transmission frequency.

The power amplification module 103 amplifies the power of the transmission signal from the transceiver module 107, so as to generate a corresponding power signal. For example, the power amplifier module may amplify the signal by 40dB, and if the transmission signal from the transceiver module is 1dBm, the power amplifier module 103 outputs a power signal with a power of 41 dBm.

The LNA module 104 performs low noise amplification on the received signal received by the transceiver antenna, and the transceiver module 107 collects and correspondingly demodulates the output received amplified signal of the LNA module 104. For example, the received signal strength is-120 dBm, the amplification gain of the LNA module 104 is 10dB, the strength of the received amplified signal collected by the transceiver module 107 is-110 dBm, and the LNA module 104 can effectively improve the sensitivity of the system, which is significant.

And the filtering module 105 selects and switches corresponding filtering matching networks for frequency bands of transmitting and receiving signals according to the working frequency setting of the system, collects input power signals, and sends the input power signals to the main control unit for detection 102 so as to judge the quality of the signals. For example, when the system operates in an SSB transmission mode with a frequency of 24.500MHz, the filtering module 105 selects a control signal and a transceiving control signal according to the frequency band of the main control unit 102, the filtering module 105 switches to a transmission path, and outputs the filtered signal through the filtering matching network of 20.000MHz to 25.000MHz, and the filtered signal is connected to a transceiving antenna through the antenna tuning module 106, so as to transmit an SSB power signal.

The antenna tuning module 106 is used for impedance matching with the transceiving antenna, and the performance of the antenna impedance matching largely determines the quality of the signal transmitted through the transceiving antenna.

And the transceiver module 107 is used for demodulating and modulating the communication signals related to the medium-high frequency services, including the SSB voice, the FSK signals and the CW signals. For example, when the system operates in the SSB transmission mode, the transceiver module 107 receives the voice data to be modulated from the main control unit 102 through the SPI bus, receives parameters such as the transmission frequency and the transmission power from the main control unit 102 through the serial port, and then performs corresponding SSB modulation on the voice signal to generate a corresponding SSB transmission signal; when the system works in an SSB receiving mode, the transceiver module 107 samples the received amplified signal from the LNA module 104, performs corresponding SSB demodulation, and transmits the SSB-demodulated voice data to the main control unit 102 through the SPI interface; when the system works in an FSK transmitting mode, the transceiver module 107 receives an FSK digital signal to be modulated from the main control unit 102 through an IO pin, and generates a corresponding FSK transmitting signal after receiving parameters such as transmitting frequency, transmitting power and the like from the main control unit 102 through a serial port; when the system works in the FSK receiving mode, the transceiver module 107 samples the received amplified signal from the LNA module 104, performs corresponding FSK demodulation, outputs an FSK demodulated signal through the IO pin, and sends the FSK demodulated signal to the main control unit 102 for analysis.

And the on-duty module 108 is connected with the on-duty antenna and is used for receiving messages of the on-duty channel with the specified frequency. For example, when 4 frequency points need to be attended to check the received message, the attended module 108 is enabled to operate only in the FSK receiving mode, and switches the receiving frequency points 4 times in a time-sharing manner, and receives and demodulates the signal from the attended antenna. Therefore, the transceiver module 107 and the watch module 108 may have the same structure, and further, in practical applications, the transceiver module 107 and the watch module 108 may be replaced by each other.

As shown in fig. 2, a display control unit 101 in a medium-high frequency transceiving system further includes: display screen 201, display control MCU202, CAN communication 203, touch module 204, interactive button 205, audio CODEC206, microphone 207 and speaker 208.

The display screen 201 is used for displaying system content, interactive information and messages. For example, when a DSC message is received, a message dialog box is popped up through the display screen 201, and the message content, the message time, the message error rate, and the like are displayed; when the volume knob in the interactive button 205 is adjusted, the percentage of the current volume is displayed by the bar graph.

And the display control MCU202 is used for processing related modules and signals in the display control unit, and comprises touch control acquisition, button acquisition, audio acquisition, display bus control and a communication bus. For example, when the system performs SSB transmission, the display control MCU202 collects a voice signal through the audio CODEC206 and the microphone 207, and transmits voice data through the CAN communication 203; when the system receives the SSB, the display control MCU202 receives the demodulated voice data through the CAN communication 203 and plays the voice through the audio CODEC206 and the speaker 208.

And the CAN communication 203 converts the display control MCU communication bus into standard CAN bus communication, and ensures the transmission distance and quality of communication.

The touch module 204 adopts a resistive touch screen to realize touch-control touch interaction, and the acquired touch position information is processed by the display control MCU202 through a bus and displayed on the display screen 201.

And an interaction button 205 for realizing entity key interaction. For example, a power-on/off button for system power-on/off; an SOS button for one-key help seeking in emergency; a volume knob for adjusting the playing volume; up/down/left/right and decision buttons for selecting and viewing a list of messages.

And the audio CODEC206 realizes the acquisition and playing of audio. For example, when audio acquisition is performed, the display control MCU controls the audio CODEC206 to sample the electrical signal of the microphone 207 by 32Ksps, and reads out voice data through the SPI bus; when playing audio, the display control MCU202 writes data with a sampling rate of 32Ksps into the audio CODEC206 through the SPI bus, sets corresponding audio parameters, and then plays the audio through the speaker 208.

The microphone 207 converts sound into an electrical signal that varies in undulation.

The speaker 208 converts the electric signal generated by the audio CODEC206 into audio audible to the human ear.

As shown in fig. 3, a master control unit 102 in a medium-high frequency transceiving system further includes: CAN communication 301, master MCU302, and FRAM memory 303.

The CAN communication 301 converts data from the CAN bus into communication data and transmits the communication data to the main control MCU302, or converts signals from the main control MCU302 into standard CAN bus communication data.

And the main control MCU302 analyzes the communication data and generates control signals and communication data for other modules through the SPI bus, the serial port and the IO pin. For example, after receiving the voice data from the CAN communication 301 and the SSB operation mode/transmission frequency and other instructions, the voice data is transmitted through the SPI bus, and the transmission frequency and transmission power and the like are set through the serial port; receiving an SSB demodulation data packet request instruction from CAN communication 301, reading voice data demodulated by the SSB through an SPI bus, and sending the data through the CAN communication 301; after receiving an FSK data packet and an FSK operating mode/transmission frequency instruction from the CAN communication 301, an FSK modulated digital signal is output through an IO pin, and a transmission frequency and transmission power are set through a serial port.

FRAM memory 303 for storing system-related configuration information and instructions. For example, correction data due to crystal oscillation deviation is stored; storing commonly used on-duty frequency points; the curve parameter points that fit linearly to the power emissions are stored, etc.

As shown in fig. 4, a power amplifier module 103 in a medium-high frequency transceiving system further includes: the system comprises a power module 401, a level 1 power amplifier 402, a level 2 power amplifier 403, a level 3 power amplifier 404 and temperature detection 405.

The power module 401 is configured to stably supply 24V power to the power amplifier module. For example, the design requires that the ripple of the 24V power supply does not exceed 1mV, the maximum output power is required to reach 300W, and the like.

And the 1-stage power amplifier 402 is used for carrying out 1-stage amplification on the transmission signal. For example, the 1-stage power amplifier 402 may amplify an input signal by 22dB, where the power of the input transmission signal is 1dBm, and the power of the output signal after passing through the 1-stage power amplifier 402 is 23 dBm.

And the 2-stage power amplifier 403 is used for carrying out 2-stage amplification on the signal output by the 1-stage power amplifier. For example, the 2-stage power amplifier 403 may amplify an input signal by 12dB, and if the amplification factor of the 1-stage power amplifier 402 is 22dB and the power of the input transmission signal is 1dBm, the power of the output signal after passing through the 2-stage power amplifier 403 is 35 dBm.

And the 3-stage power amplifier 404 is used for amplifying the signal output by the 2-stage power amplifier by 3 stages. For example, the 3-stage power amplifier 404 may amplify an input signal by 6dB, and the power of the input transmission signal is 1dBm according to the amplification factor of the 1-stage power amplifier 402 being 22dB, the amplification factor of the 2-stage power amplifier 403 being 12dB, and the power of the output signal after passing through the 3-stage power amplifier 404 being 41 dBm.

And the temperature detection 405 is used for detecting the temperature of the 3-level power amplifier and preventing the power amplifier module from being damaged in an over-temperature state. For example, when the power amplifier temperature exceeds 80 ℃, the temperature detection 405 starts a hardware protection mechanism at first, and cuts off the power supply of the 3-level power amplifier within microsecond-level time to prevent the device damage caused by high-temperature nonlinearity; when the power amplifier temperature is normal, the temperature information is sent to the main control unit for detection through the temperature detection line.

As shown in fig. 5, a filtering module 105 in a medium-high frequency transceiving system further includes: a transceiving switching module 501, a filter matching network array 502 and a bidirectional power detection module 503.

The transceiver switching module 501 is configured to switch between a transmitting channel and a receiving channel when the system performs transceiver switching. For example, in the receiving state mode, after the antenna tuning signal passes through the bidirectional power detection module 503 and the filter matching network array 502, the transceiving control signal switches the transceiving switching module 501 to be connected to the receiving path, and outputs a receiving signal; when in the transmitting state mode, the transmit/receive control signal switches the transmit/receive switching module 501 to be connected to the transmit path, and outputs the power signal to the filter matching network array 502, and then outputs the antenna tuning signal after passing through the bidirectional power detection module 503.

And the filter matching network array 502 is used for realizing filter matching aiming at different frequency bands. For example, when the system operates in the SSB transmission mode at the frequency of 24.500MHz, the filter matching network array 502 selects a filter matching network of 20.000MHz to 25.000MHz according to the frequency band selection control signal, and the power signal passing through the transceiving switching module 501 is filtered by the filter matching network array 502 via the transmission path and then output to the bidirectional power detecting module 503.

The bidirectional power detection module 503 performs bidirectional acquisition on the input power signal. For example, in the transmitting state, after the power signal passes through the transceiving switching module 501 and the filter matching network array 502, a corresponding bidirectional power detection signal is generated and sent to the main control unit for calculation so as to determine the quality of the current power signal.

As shown in fig. 6, a transceiver module or an attendant module in a medium-high frequency transceiver system further includes: the device comprises a power management module 601, a receiving unit 602, a transmitting unit 603, a low-power amplifying module 604 and an FPGA signal processing unit 605.

The power management module 601 is configured to generate power required by each unit in the system. For example, 3.3V digital power and 3V analog power required for the transmitting unit 603 are generated; generating a 3.3V digital power supply and a 3V analog power supply required by the receiving unit 602; generate the core voltage of 1.8V and the pin voltage of 3.3V, etc. required by the FPGA signal processing unit 605.

The receiving unit 602 performs rf single-ended to differential conversion on the input receiving signal, and performs digital sampling on the signal after performing input impedance matching.

The transmitting unit 603 generates a corresponding analog signal according to the data, and outputs the signal to the low-power amplifying module 604 for signal amplification, thereby generating a transmitting signal. For example, a 3.001MHz key signal is transmitted, and a sinusoidal signal with-5 dBm power and 3.001MHz frequency is generated by the transmitting unit 603.

A low power amplifying module 604, configured to amplify the analog signal from the transmitting unit 603, and generate a transmitting signal. For example, the amplification factor of the small power amplification module 604 for a signal is 6dB, the power of the signal generated by the transmitting unit 603 is-5 dBm, and the power of the output transmitting signal is 1 dBm.

The FPGA signal processing unit 605 demodulates the digitally sampled signal according to a signal demodulation algorithm, and performs 2FSK modulation on the digital signal or SSB modulation on SPI bus data. For example, when the system works in the SSB transmission mode, the FPGA signal processing unit 605 performs SSB modulation on the voice signal according to the SSB modulation algorithm, and sends the modulated signal to the transmitting unit 603; when the system works in an SSB receiving mode, the FPGA signal processing unit 605 performs digital sampling on the received signal input via the receiving unit 602 according to an SSB demodulation algorithm, performs SSB demodulation, and loads the SSB demodulated voice data output onto the SPI bus; when the system works in an FSK transmission mode, the FPGA signal processing unit 605 modulates an FSK digital signal to be modulated according to an FSK modulation algorithm, and sends a debugging signal to the transmitting unit 603; when the system von is in the FSK reception mode, the FPGA signal processing unit 605 performs digital sampling on the reception signal input via the reception unit 602 according to several FSK algorithms, performs FSK demodulation, and outputs the FSK demodulation signal to the IO pin. Parameters such as a working mode, a working frequency point and the like of the system are input/output through a serial port; the modulation/demodulation voice signal in the SSB mode is input/output via the SPI bus; the modulated/demodulated digital signal in the FSK mode is output through the IO pin.

As shown in fig. 7, an FPGA signal processing unit 705 in a transceiver module or a watch module of a medium-high frequency transceiver system further includes: a medium-high frequency demodulation module 7051 and a medium-high frequency modulation module 7052.

The medium-high frequency demodulation module 7051 is configured to perform 2FSK demodulation on the digitized signal according to an algorithm and output a demodulated digital signal, or perform SSB demodulation on the digitized signal according to an algorithm and output a demodulated voice signal through the SPI bus.

The middle-high frequency modulation module 7052 generates a 2FSK analog signal of a designated frequency point according to the modulated digital signal, or generates an SSB analog signal of the designated frequency point according to the voice signal modulation transmitted by the SPI bus.

As shown in fig. 8, the middle-high frequency demodulation module 7051 in an embodiment of a middle-high frequency transceiving system includes: SSB reception frequency 8001,

multipliers

8002, 8009, 8011, 8019, and 8020, DDS synthesis 8003 and 8010,

CIC decimation

8004, 8012, and 8014,

FIR bandpass

8005, 8015, and 8016, SSB signal strength calculation 8006, SSB reception buffer 8007, SSB reception RSSI8008, clock division 8013,

delays

8017 and 8018, adder 8021, synchronization decision 8022, FSK signal strength calculation 8023, FSK reception frequency 8024, FSK reception RSSI8025, FSK demodulation threshold 8026.

The SSB receiving frequency 8001 is configured by a serial port, and is used to set a frequency point for SSB demodulation/CW demodulation. For example, when the system operates in the SSB reception mode and the reception frequency is 24.500MHz, a parameter value corresponding to 24.500MHz is written into the SSB reception frequency 8001 through the serial port.

The multiplier 8002 performs digital DDC down-conversion on the radio frequency sampling signal according to the sine/cosine signal generated by the DDS synthesis 8003, thereby obtaining an SSB demodulated voice signal at the baseband.

The DDS synthesis 8003, which is used to generate the sine/cosine signal corresponding to the SSB demodulation bin, is connected to one input terminal of the multiplier 8002.

And the CIC decimation 8004 is used for performing decimation filtering on the data after digital down-conversion during the SSB demodulation so as to reduce the data throughput of signal processing. For example, if 3125 decimation times are used, the reference clock of the input rf sampling signal is 100MHz, and the reference clock of the output decimated and filtered signal is 32 KHz.

And the FIR band-pass 8005 is used for performing band-pass filtering on the signal extracted by the CIC during SSB demodulation to acquire a voice signal in a required corresponding frequency band. For example, a 512-point digital FIR filter can be selected, the band-pass range of the filter is 300Hz to 3400Hz, and the out-of-band attenuation is designed to be-80 dB, so as to meet the requirements related to the out-of-band performance of the SSB receiving system.

SSB signal strength calculation 8006 is used to calculate the strength of the currently received SSB signal. For example, the currently received signal power is-80 dBm, and the output value is 5692; the current received signal power is-100 dBm, the output value is 3867, and so on. SSB signal strength calculation 8006 is only used to perform strength calculations for signals above-105 dBm.

The SSB receive buffer 8007 implements queue buffering of the SSB demodulated voice data. For example, three SRAMs with a depth of 320 bytes are alternately buffered to achieve continuity of voice data.

SSB receive RSSI8008 buffers the current received SSB signal strength from the SSB signal strength calculation 8006 output.

Multipliers

8009 and 8011 perform digital DDC down-conversion on the radio frequency sampling signal according to the sine and cosine signals generated by DDS synthesis 8010, thereby generating baseband signals corresponding to ± 85Hz quadrature components.

And the DDS synthesis 8010 is used for generating sine and cosine signals corresponding to the FSK demodulation frequency points. To one input of

multipliers

8009 and 8011, respectively.

CIC decimators

8012 and 8014 are used to decimate and filter the digitally down-converted data during FSK demodulation to reduce the data throughput of the signal processing. For example, 6250 decimation is performed, the reference clock of the input rf sampling signal is 100MHz, and the reference clock of the output decimated and filtered signal is 16 KHz.

And the clock frequency division 8013 is used for dividing the frequency of the clock signal during FSK demodulation to generate the clock required by the time delay device. For example, 6250 frequency divisions are used to generate a 16KHz reference clock signal.

FIR band-

pass

8015 and 8016 are used for performing band-pass filtering on the signal extracted by the CIC to obtain a baseband signal in a required corresponding filtering frequency band. For example, a 256-point digital FIR filter can be selected, the band-pass range of 20Hz to 150Hz is used, and the out-of-band attenuation is designed to be-80 dB, so as to meet the out-of-band performance related requirements of the NAVTEX receiving system.

And

time delays

8017 and 8018 for performing time delay temporary storage of the band-pass filtered signal for subsequent quadrature demodulation.

Multipliers

8019 and 8020, in combination with the temporary delay of

delay devices

8017 and 8018 at the previous time, are used for quadrature demodulation of FIR filtered signals.

An adder 8021, configured to add the quadrature demodulation components to the band-pass filtered signal to obtain a quadrature demodulation result.

And a synchronization decision 8022, which ensures the correctness and the synchronization of the demodulated data through the set demodulation threshold and the synchronization sampling.

And an FSK signal intensity calculation 8023, configured to calculate an intensity of the currently received FSK signal. For example, the currently received signal power is-80 dBm, and the output value is 5275; the current received signal power is-100 dBm, the output value is 3444, and so on. The FSK signal strength calculation 8023 is used only for strength calculation of signals above-105 dBm.

The FSK receiving frequency 8024 is configured by a serial port and is used for setting a frequency point for FSK demodulation. For example, when the system operates in the FSK receiving mode and the receiving frequency is 8.202MHz, the system writes a parameter value corresponding to 8.202MHz into the FSK receiving frequency 8024 through the serial port.

The FSK receive RSSI8025 registers the currently received FSK signal strength from the FSK signal strength calculation 8023 output.

An FSK demodulation threshold 8026 stores a threshold for performing FSK demodulation. When the value output by the synchronization decision 8022 is greater than the FSK demodulation threshold, the FSK demodulation signal is set to 1; when the value output by the synchronous decision 8022 is smaller than the negative number of the FSK demodulation threshold value, the FSK demodulation signal is set to be 0; otherwise the FSK demodulated signal is unchanged. Therefore, the setting of the FSK demodulation threshold value can further improve the FSK demodulation performance of the system.

As shown in fig. 9, the medium-high frequency modulation module 7052 in an embodiment of the medium-high frequency transceiving system includes: an SSB transmission buffer 9001,

CIC interpolations

9002, 9007, and 9008,

multipliers

9003, 9005, 9009, 9010, 9019, and 9020, a

DDS synthesis

9004, 9018, and 9026, upper sideband filtering 9006,

adders

9011 and 9021, a CW transmission control 9012, a mode selector 9013, a power control 9014, a 0.915K register 9015, a 1.085K register 9016, a selector (100bps synchronization) 9017, a transmission mode register 9022, a transmission frequency register 9023, a transmission power register 9024, and a parameter calculation 9025.

The SSB transmit buffer 9001 implements queue buffering of the SSB voice data to be modulated. For example, two SRAMs with a depth of 320 bytes are alternately buffered to achieve continuity of voice data.

The CIC interpolation 9002 is used for interpolation of first-level data during SSB modulation, so as to improve the sampling rate of the signal and prevent the signal from having a large frequency difference due to quantization error. For example, 5 times of data interpolation is adopted, the reference clock of the input radio frequency sampling signal is 32KHz, and the reference clock of the output data interpolated signal is 160 KHz.

Multipliers 9003 and 9005, which synthesize 9004 the resulting sine and cosine signals from the DDS at SSB modulation, perform a first stage digital DUC up-conversion on the speech data.

The DDS synthesis 9004, which generates the sine and cosine signals corresponding to the first stage of digital up-conversion in SSB modulation, is connected to one input of multipliers 9003 and 9004, respectively.

Upper sideband filtering 9006, which performs single sideband filtering on the signal after the voice data has undergone the first stage of up-conversion during SSB modulation. For example, a 256-point digital FIR filter can be selected, the band-pass range is 160.300-163.400 KHz, and the out-of-band attenuation is designed to be-80 dB, so as to meet the requirements related to out-of-band performance during SSB transmission.

CIC interpolation

9007 and 9008 further improve the sampling rate of the signals needing digital up-conversion in the second stage during SSB modulation to perform data interpolation, and can prevent large frequency difference of the signals caused by quantization errors. For example, 625 times of data interpolation is adopted, the reference clock of the input radio frequency sampling signal is 160KHz, and the reference clock of the output data interpolated signal is 100 MHz.

Multipliers 9009 and 9010 perform a second digital DUC up-conversion on the output of the first stage data interpolation according to the sine and cosine signals generated by DDS synthesis 9026 during SSB modulation.

An adder 9011 is used to synthesize the modulated SSB signal in the SSB mode, and the final modulated SSB signal is synthesized using the outputs of the multiplier 9009 and the multiplier 9010.

The CW emission control 9012 serves as modulation of the key signal according to the input of the IO pin. For example, when the input of the IO pin is 1, a sine/cosine signal is output; when the input of the IO pin is 0, no signal is output.

The mode selector 9013 selects a modulation signal to be output according to the operating mode. For example, when the transmit mode register is 1, the SSB modulated signal is output to the input of the power control 9014; when the transmission mode register is 2, outputting the CW key signal to the input terminal of the power control 9014; when the transmit mode register is 3, a 2FSK modulated signal is output to the input of the power control 9014.

The power control 9014 adjusts the amplitude of the modulated signal according to the value in the transmit power register 9024. For example, when the value in the system transmission power register 9024 is 255, the power control 9014 outputs the signal output by the mode selector 9013 by 100%; when the value in the system transmit power register 9024 is 128, then the power control 9014 outputs 50% of the signal output by the mode selector 9013. Increasing linearly in proportion.

And the 0.915K register 9015 and the 1.085K register 9016 are used for temporarily storing corresponding DDS synthesis parameters of 0.915KHz and 1.085KHz respectively.

The selector (100bps synchronization) 9017 determines, according to the 2FSK digital modulation signal input by the IO pin, that the parameter to be DDS synthesized is from the 0.915K register 9015 or the 1.085K register 9016.

The DDS is synthesized 9018, and 1K +/-85 Hz sine and cosine baseband signals are generated according to configuration parameters output by a selector (100bps synchronization) 9017.

Multipliers

9019 and 9020 perform DUC up-conversion according to output signals of the DDS synthesis 9018 and DDS synthesis 8026 to obtain orthogonal components corresponding to a transmission frequency band.

The outputs of the adder 9021, multiplier 9019 and multiplier 9020 combine the final 2FSK modulated signal.

A transmission mode register 9022, a transmission frequency register 9023, and a transmission power register 9024, which are respectively used for storing the transmission mode, the transmission frequency, and the transmission power when the system operates.

And the parameter calculation module 9025 calculates the parameters required by the corresponding frequency synthesis according to the values of the transmission registers and the modes.

And the DDS synthesis 9026 is used for generating sine and cosine signals required by the second stage during SSB modulation, CW modulation or FSK modulation.

With reference to the above description of the present invention, those skilled in the art can understand that the present invention has several advantages as follows:

the utility model provides a pair of well high frequency receiving and dispatching system, receiving and dispatching module and on duty module separate mutually, and the system adopts the modular design mode, can effectual reduction system complexity and cost on the circuit design of follow system, and the receive sensitivity also can keep higher uniformity. The on-duty system can receive the message received by the on-duty channel while the receiving and sending module receives the signal, and the receiving and sending module does not interfere with the on-duty channel; moreover, the transceiver module and the watch module adopt the same circuit and design, and can be replaced mutually in emergency, so that the reliability of the system in emergency is improved; the system adopts a modular design mode, has a clear structure and is convenient to produce and maintain; meanwhile, the system adopts a fully digital signal processing unit, so that the receiving sensitivity of the system has higher consistency.

Although the invention has been illustrated and described herein with reference to specific examples, the invention is not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims. It is appropriate, therefore, that the appended claims be construed broadly and in a manner consistent with the scope of the invention, as set forth in the following claims.

Claims

1. A medium-high frequency transceiving system, comprising:

the display control unit is connected with the main control unit, configures the main control unit, the power amplifier module, the LNA module, the filter module, the sky modulation module, the transceiver module and the watch module through a CAN bus, realizes the acquisition and the playing of voice data, converts signals into message information by using message service and provides a user interaction interface;

the main control unit is connected with the power amplification module, the filtering module, the transceiving module and the on-duty module, receives parameters and instructions from the CAN bus, and generates control signals and communication data for the power amplification module, the LNA module, the filtering module, the antenna modulation module, the transceiving module and the on-duty module through the SPI bus, a serial port and an IO pin;

2. The medium-high frequency transceiving system according to claim 1, wherein the display control unit comprises a display control MCU, and a display screen, a display control CAN communication module, a touch module, an interactive button, a voice CODEC, a microphone and a speaker which are connected with the display control MCU;

the display screen is used for displaying system content, interactive information and messages;

the display control MCU is used for processing related modules and signals in the display control unit and comprises touch acquisition, button acquisition, audio acquisition, display bus control and a communication bus;

the display control CAN communication module is used for converting a display control MCU communication bus into standard CAN bus communication;

the touch module is used for realizing touch interaction;

the interactive button realizes entity key interaction;

the voice CODEC is used for realizing the acquisition and playing of audio;

the microphone is used for carrying out analog conversion on the voice;

and the loudspeaker is used for playing sound to the outside.

3. The medium-high frequency transceiving system according to claim 1, wherein the master control unit comprises a master control MCU, and a master CAN communication module and a FRAM memory connected to the master control MCU;

the main control CAN communication module converts data from the CAN bus into communication data and transmits the communication data to the main control MCU;

the master control MCU analyzes the communication data and generates control signals and communication data for the power amplifier module, the LNA module, the filtering module, the antenna modulation module, the transceiver module and the watch module through the SPI bus, the serial port and the IO pin;

and the FRAM memory is used for storing configuration information and instructions of the system.

4. The medium-high frequency transceiving system according to claim 1, wherein the power amplifier module comprises:

the power supply module is used for stably supplying power to the power amplification module;

the 1-stage power amplifier is used for carrying out 1-stage amplification on the transmitted signal;

2-stage power amplification, which is used for carrying out 2-stage amplification on signals output by the 1-stage power amplification;

the 3-stage power amplifier is used for amplifying the signal output by the 2-stage power amplifier by 3 stages;

and temperature detection for detecting the temperature of the 3-stage power amplifier.

5. The medium-high frequency transceiving system according to claim 1, wherein the filtering module comprises:

the receiving and transmitting switching module is used for switching the transmitting channel and the receiving channel when the system performs receiving and transmitting switching;

the filter matching network array is connected with the transceiving switching module and is used for realizing filter matching aiming at different frequency bands;

and the bidirectional power detection module is connected with the filter matching network array and is used for bidirectionally collecting the input power signal.

6. The medium-high frequency transceiving system according to claim 1, wherein the transceiving module and the watch module have the same structure, and the transceiving module or the watch module comprises:

the power management module is used for generating power required by each unit in the system;

the transmitting unit generates a corresponding analog signal according to the data;

a receiving unit that digitally samples a received signal;

the low-power amplification module is used for amplifying the analog signal from the transmitting unit to generate a transmitting signal;

and the FPGA signal processing unit is connected with the receiving unit and the transmitting unit, demodulates the digitally sampled signals according to a signal demodulation algorithm, and performs 2FSK modulation on the digital signals or SSB modulation on SPI bus data.

7. The medium-high frequency transceiving system according to claim 6, wherein the FPGA signal processing unit comprises:

the medium-high frequency demodulation module is used for carrying out 2FSK demodulation on the digitized signals according to an algorithm and outputting demodulated digital signals, or carrying out SSB demodulation on the digitized signals according to the algorithm and outputting demodulated voice signals through an SPI bus;

and the medium-high frequency modulation module generates a 2FSK analog signal of a designated frequency point according to the modulation digital signal or generates an SSB analog signal of the designated frequency point according to the modulation of a voice signal transmitted by the SPI bus.

8. The medium-high frequency transceiving system according to claim 7, wherein the medium-high frequency demodulating module further comprises:

1 SSB receiving frequency register for setting frequency point of SSB demodulation/CW demodulation;

the system comprises 5 multipliers, wherein two multipliers are used for carrying out digital down-conversion on a sampling signal during FSK demodulation, two multipliers are used for carrying out quadrature demodulation on the signal during FSK demodulation, and the other multiplier is used for carrying out digital down-conversion on the sampling signal during SSB demodulation;

synthesizing 2 DDSs, wherein one DDS is used for generating sine and cosine signals corresponding to the FSK demodulation frequency point, and the other DDS is used for generating sine or cosine signals corresponding to the SSB demodulation frequency point;

3 CIC extraction, wherein two CIC extraction are used for extracting and filtering the data after digital down-conversion during FSK demodulation, and the other CIC extraction is used for extracting and filtering the data after digital down-conversion during SSB demodulation;

two of the 3 FIR band-pass filters are used for performing band-pass filtering on the signal extracted by the CIC during FSK demodulation to obtain a baseband signal in a required corresponding frequency band, and the other one is used for performing band-pass filtering on the signal extracted by the CIC during SSB demodulation to obtain a voice signal in the required corresponding frequency band;

1 SSB signal intensity calculating module, which is used to calculate the intensity of the SSB signal received currently;

1 SSB receiving buffer for realizing queue buffer of voice data demodulated by SSB;

1 SSB receiving RSSI register for temporarily storing the intensity of the SSB signal currently received;

1 clock frequency division module, which is used for generating the clock needed by the delayer by frequency division of the clock signal during FSK demodulation;

2 time delay units for time delay and temporary storage of band-pass filtered signals during FSK demodulation;

1 adder, which is used for carrying out quadrature demodulation on the signals after band-pass filtering during FSK demodulation;

1 synchronous decision, which is used for ensuring the correctness and synchronism of demodulated data during FSK demodulation;

1 FSK signal intensity calculating module, which is used for calculating the intensity of the FSK signal currently received;

1 FSK receiving frequency register for setting frequency point of FSK demodulation;

1 FSK receiving RSSI register for temporarily storing the intensity of the FSK signal currently received;

and 1 FSK demodulation threshold register for storing threshold values for FSK demodulation.

9. The medium-high frequency transceiving system according to claim 7, wherein the medium-high frequency modulation module further comprises:

1 SSB transmitting cache realizes queue cache of SSB voice data to be modulated;

3 CIC interpolation, wherein one CIC interpolation is used for the first-stage data interpolation in SSB modulation, and the other two CIC interpolation are used for realizing the final data interpolation in SSB modulation;

two of the 6 multipliers are used for carrying out digital up-conversion on a baseband signal during FSK modulation, two multipliers are used for carrying out primary digital up-conversion on voice data during SSB modulation, and the other two multipliers are used for secondary digital up-conversion during SSB modulation;

synthesizing 3 DDSs, wherein one DDS generates 1K +/-85 Hz sine and cosine baseband signals required by FSK modulation, one DDS generates sine and cosine signals corresponding to first-stage digital up-conversion during SSB modulation, and the other DDS generates sine and cosine signals corresponding to second-stage, CW modulation or FSK modulation required by SSB modulation;

1 upper sideband filtering, namely performing single sideband filtering on a signal after voice data is subjected to first-stage up-conversion during SSB modulation;

2 adders, one of which is used for synthesizing the modulated FSK signal in the FSK mode and the other is used for synthesizing the modulated SSB signal in the SSB mode;

1 CW transmission control for modulation of a key signal;

1 mode selector, according to the working mode selecting the modulation signal to be outputted;

1 power control, according to the power parameter, adjusting the amplitude of the modulation signal;

2 registers for temporarily storing DDS synthesis parameters corresponding to 0.915KHz and 1.085KHz respectively;

1 selector, according to digital modulation signal selecting needed DDS synthetic parameter;

3 transmission registers, one of which is used for storing a transmission mode, one of which is used for storing a transmission frequency, and the other of which is used for storing transmission power;

and the 1 parameter calculation module is used for calculating the parameters required by the corresponding frequency synthesis according to the values of the transmission registers and the modes.