CN209627368U - A kind of portable very high frequency(VHF) transceiver - Google Patents

Abstract

A kind of portable very high frequency(VHF) transceiver: control and display unit, sender, receiver, frequency synthesis unit and Power Management Unit；Control is separately connected sender, receiver, frequency synthesis unit and Power Management Unit with display unit, and frequency synthesis unit connection sender and receiver, receiver and sender common antenna, Power Management Unit provide power supply for electricity consumption device.The utility model one can easily carry, is light-weight, is small in size, and internal battery, one can easily carry, and stream time is not less than 5 hours under normal reiving/transmitting state.

Description

A kind of portable very high frequency(VHF) transceiver

Technical field

The utility model relates to very high frequency(VHF) earth-space communication ground installations, and in particular to a kind of portable very high frequency(VHF) transmitting-receiving letter Machine.

Background technique

Portable very high frequency(VHF) earth-space communication ground installation used in existing China airport is completely dependent on imported product, and external The hardware support kit of equipment is outmoded, cannot update for a long time.Once there was corresponding portable very high frequency(VHF) equipment production in the country, but not It is related to the MHz frequency range of 118 MHz~137, is mostly the open working frequency of ham radio use and national the Radio Management Commission, and the people Dedicated frequency range of navigating does not have producer and enterprise to develop.Portable very high frequency(VHF) transceiver is developed to be conducive to fill up country just The blank for taking formula very high frequency(VHF) equipment breaks external monopolization, solves that civil aviation procuring equipment is at high cost, maintenance difficult, cost The problems such as high.Country's very high frequency(VHF) transceiver and shortwave, ultrashort wave radio set are desktop computer now, it is necessary to which being fixed on the rack makes With, and powerful supplied by AC/DC electricity is needed, it can not carry.

Utility model content

In order to solve the above technical problems, the utility model provides a kind of portable very high frequency(VHF) transceiver.

The technical solution of the utility model specifically:

A kind of portable very high frequency(VHF) transceiver: control and display unit, sender, receiver, frequency synthesis unit with And Power Management Unit；Control is separately connected sender, receiver, frequency synthesis unit and power management list with display unit Member, frequency synthesis unit connects sender and receiver, receiver and sender common antenna, Power Management Unit are electrical appliance Part provides power supply.

Further: control specifically includes processor, input equipment, display equipment, storage chip, processing with display unit Device is separately connected input equipment, display equipment, storage chip, sender, receiver, frequency synthesis unit and power management list Member access processor.

Further: sender includes audio frequency processing circuit, modulator, radio-frequency power amplifier, low-pass filter, orientation Coupler and radio frequency electric switch, audio frequency processing circuit connect modulator, and modulator connects radio-frequency power amplifier, radio-frequency power Amplifier connects low-pass filter, and low-pass filter connects directional coupler, and directional coupler connects radio frequency electric switch, radio frequency Electronic switch connects antenna, and directional coupler and modulator are all connected with the processor in control and display unit, and modulator also connects It is connected to frequency synthesis unit.

Further: audio frequency processing circuit has audio compression circuit and audio filter circuit.

It is further: also to there is PTT key, PTT carries out switching by key control radio frequency electric switch.

It is further: receiver by RF Amplifier Module, frequency mixer, intermediate frequency amplification module, the second frequency mixer, wave detector, Audio-frequency amplifier, controllable digital regulation resistance and AGC control circuit composition, antenna connect RF Amplifier Module, and radio frequency amplifies mould Block connects frequency mixer, and frequency mixer connects intermediate frequency amplification module, and intermediate frequency amplification module connects the second frequency mixer, the connection of the second frequency mixer Wave detector, wave detector connect audio filter circuit, and audio filter circuit connects controllable digital regulation resistance, and controllable digital regulation resistance connects Audio amplifier circuit is connect, AGC control circuit is separately connected wave detector and radio frequency amplifying circuit, controllable digital regulation resistance connection control With the processor in display unit, frequency mixer and the second frequency mixer all rate of connections synthesis units.

Further: RF Amplifier Module includes bandpass filter and radio frequency amplifying circuit.

Further: intermediate frequency amplification module specifically includes intermediate frequency crystal filter and IF amplifier circuit.

Further: frequency synthesis unit is made of voltage controlled oscillator, phase discriminator, loop filter, processor, phase discriminator Linkloop filter, loop filter connect voltage controlled oscillator, voltage controlled oscillator output frequency signal and feedback frequency signal To phase discriminator, phase discriminator setting parameter is controlled by processor.

Further: Power Management Unit is specially that battery by power supply control chip provides power supply for electricity consumption device.

The utility model one can easily carry, is light-weight, is small in size, and internal battery, one can easily carry, and Stream time is not less than 5 hours under normal reiving/transmitting state.

Transmission power is adjustable within the scope of the W of 1 W~7；Receiving sensitivity is -103.5dBm@12dB.When to sky commander, when When aircraft flight height is 500 m, communication distance is not less than 40 km, and when 5000 m of flying height, communication distance is not less than 150 km。

Fault cues can be provided, technical staff can be fast according to fault cues when equipment breaks down with reliability Fast fault point facilitates maintenance.

The utility model uses OLED screen curtain, effectively reduces unit energy consumption, and use large capacity rechargeable lithium battery, Effectively increase the cruise duration of battery.

The utility model uses stable Power Management Unit, ensure that the power supply of each unit is mutually isolated, makes complete machine The work of highly effective and safe.And it is effectively increased the cruise duration of battery.

The radio frequency electric switch that the utility model uses can be rapidly performed by transmitting-receiving switching, when ensure that receiving and transmitting signal It does not interfere with each other.

The utility model ensure that and be cut completely under hair-like state toward sender access using electronic switch control transmitting-receiving conversion Only, to ensure that transmit-receive sharing common antenna, space and cost have been saved.

Detailed description of the invention

Fig. 1 is the schematic diagram of the utility model structure.

Fig. 2 is the functional block diagram of the utility model control and display unit.

Fig. 3 is the utility model sender block diagram.

Fig. 4 is the utility model receiver block diagram.

Fig. 5 is the utility model frequency synthesis unit block diagram.

Fig. 6 is the utility model Power Management Unit block diagram.

Specific embodiment

Fig. 1 is the schematic diagram of the utility model structure, and the utility model can divide quinquepartite: control and display unit, Sender, receiver, frequency synthesis unit and Power Management Unit.

Control is separately connected sender, receiver, frequency synthesis unit and Power Management Unit, frequency with display unit Synthesis unit connection sender and receiver, receiver and sender common antenna, Power Management Unit provide for electricity consumption device Power supply.

Fig. 2 is the utility model control and the functional block diagram of display unit, control and display unit specifically include processor, Input equipment, display equipment, storage chip, processor are separately connected input equipment, display equipment, storage chip, sender, receipts Letter machine, frequency synthesis unit and Power Management Unit access processor.Wherein the MCU such as commercially available single-chip microcontroller can be used in processor Equipment.OLED screen curtain can be used in display equipment.

Specific input equipment is key, and key accesses processor by I2C extended chip PCF8574A, when have key by PCF8574A will generate an interrupt signal when lower, and notice single-chip microcontroller has by key pressing, and single-chip microcontroller is read by I2C bus PCF8574A shaped like chips state value, single-chip microcontroller make corresponding response according to the state value pressed.Single-chip microcontroller is by serial ports and collects mail Machine communication, useful information is stored to storage chip, and by display screen and shows useful information.

Fig. 3 is the functional-block diagram of the utility model sender, and sender includes audio frequency processing circuit, modulator, radio frequency Power amplifier, low-pass filter, directional coupler and radio frequency electric switch, audio frequency processing circuit connect modulator, modulator Radio-frequency power amplifier is connected, radio-frequency power amplifier connects low-pass filter, and low-pass filter connects directional coupler, orientation Coupler connects radio frequency electric and switchs, and radio frequency electric switch connection antenna, directional coupler and modulator are all connected with control and show Show that the processor in unit, modulator are also connected with frequency synthesis unit.Specific audio frequency processing circuit has audio compression electricity Road and audio filter circuit.

Sender also has PTT key, and PTT carries out switching by key control radio frequency electric switch.

Voice signal is sent into modulator progress signal modulation after carrying out audio compression and filtering processing, can be exchanged by key Device parameter processed is adjusted the setting completed to modulation depth.Frequency synthesizer provides pumping signal for modulator.Modulated signal It is amplified by radio-frequency power amplifier, is sent to directional coupler by low-pass filtering.When PTT key is effective, radio frequency Electronic switch conducting, signal are exported by antenna；When PTT key is invalid, signal is received through antenna and is sent into receiver.

Fig. 4 is the functional-block diagram of the utility model receiver, and receiver is put by RF Amplifier Module, frequency mixer, intermediate frequency Big module, the second frequency mixer, wave detector, audio-frequency amplifier, controllable digital regulation resistance and automatic growth control (AGC) circuit group At antenna connects RF Amplifier Module, and RF Amplifier Module connects frequency mixer, and frequency mixer connects intermediate frequency amplification module, and intermediate frequency is put Big module connects the second frequency mixer, the second frequency mixer tie geophone, and wave detector connects audio filter circuit, audio filter circuit Connect controllable digital regulation resistance, controllable digital regulation resistance connects audio amplifier circuit, AGC control circuit be separately connected wave detector and Radio frequency amplifying circuit, controllable digital regulation resistance connection control and the processor in display unit, frequency mixer and the second frequency mixer are all Rate of connections synthesis unit.Specific RF Amplifier Module includes bandpass filter and radio frequency amplifying circuit.Intermediate frequency amplification module Specifically include intermediate frequency crystal filter and IF amplifier circuit.SL6700C chip can be used in wave detector.

The signal that antenna receives pass through first the bandpass filter of 118 ~ 137 MHz to the high-frequency signal outside band into Then row filtering is amplified the local oscillation signal come with frequency synthesizer through radio frequency and is mixed in frequency mixer, generates in 35.25 MHz Frequently.Sheet of the intermediate-freuqncy signal after IF amplifier circuit carries out preposition amplification with the frequency-selecting of intermediate frequency crystal filter and 36.55 MHz The signal that shakes is mixed, and generates the second intermediate-freuqncy signal of 1.3 MHz, and the second intermediate-freuqncy signal is sent to audio-frequency amplifier through detection amplification and amplifies Output.

Fig. 5 is the functional-block diagram of the utility model frequency synthesis unit, and frequency synthesis unit is by voltage controlled oscillator (VCO), phase discriminator, loop filter, processor composition, phase discriminator linkloop filter, loop filter connect voltage-controlled vibration Device, voltage controlled oscillator output frequency signal and feedback frequency signal are swung to phase discriminator, and phase discriminator setting parameter is controlled by processor.

Frequency synthesis unit has double pressure-controlled oscillator, is able to carry out bifrequency output in the same time.

CX72300 chip can be selected in phase discriminator, and OP07CS8 chip can be selected in loop filter, and processor can be selected NUC130 chip.

The radiofrequency signal that VCO is generated enters phase discriminator, is compared after phase discriminator inter-process with 8 MHz reference frequencies Compared with the error voltage of output is sent to VCO after circulator filters, to control the working frequency of VCO.

Fig. 6 is the functional-block diagram of the utility model Power Management Unit, and battery is electricity consumption by power supply control chip Device provides power supply, power supply control chip connection control and the processor in display unit.Power supply control chip can be used commercially available The common power supply control chip such as HIP6301.

The voltage that wherein power supply control chip inputs battery converts, and exports required each road voltage, supply is not It works with circuit；Processor realizes that on/off, high low-power consumption mode switch by power supply control chip, battery voltage The functions such as detection.

Above-described is only preferred embodiments of the present invention, it is noted that for those skilled in the art For, under the premise of not departing from the utility model general idea, several changes and improvements can also be made, these also should be considered as The protection scope of the utility model.

Claims (10)

1. a kind of portable very high frequency(VHF) transceiver, it is characterised in that: control and display unit, sender, receiver, frequency are closed At unit and Power Management Unit；Control is separately connected sender, receiver, frequency synthesis unit and electricity with display unit Source control unit, frequency synthesis unit connect sender and receiver, receiver and sender common antenna, Power Management Unit Power supply is provided for electricity consumption device.

2. a kind of portable very high frequency(VHF) transceiver as described in claim 1, it is characterised in that: control is specific with display unit Including processor, input equipment, display equipment, storage chip, processor is separately connected input equipment, display equipment, storage core Piece, sender, receiver, frequency synthesis unit and Power Management Unit access processor.

3. a kind of portable very high frequency(VHF) transceiver as described in claim 1, it is characterised in that: sender includes audio processing Circuit, modulator, radio-frequency power amplifier, low-pass filter, directional coupler and radio frequency electric switch, audio frequency processing circuit connect Modulator is connect, modulator connects radio-frequency power amplifier, and radio-frequency power amplifier connects low-pass filter, low-pass filter connection Directional coupler, directional coupler connect radio frequency electric switch, radio frequency electric switch connection antenna, directional coupler and modulator The processor being all connected in control and display unit, modulator are also connected with frequency synthesis unit.

4. a kind of portable very high frequency(VHF) transceiver as claimed in claim 3, it is characterised in that: audio frequency processing circuit has sound Frequency compressor circuit and audio filter circuit.

5. a kind of portable very high frequency(VHF) transceiver as claimed in claim 3, it is characterised in that: also have PTT key, PTT It is switched by key control radio frequency electric and carries out switching.

6. a kind of portable very high frequency(VHF) transceiver as described in claim 1, it is characterised in that: receiver amplifies mould by radio frequency Block, frequency mixer, intermediate frequency amplification module, the second frequency mixer, wave detector, audio-frequency amplifier, controllable digital regulation resistance and AGC control Circuit composition, antenna connect RF Amplifier Module, and RF Amplifier Module connects frequency mixer, and frequency mixer connects intermediate frequency amplification module, Intermediate frequency amplification module connects the second frequency mixer, the second frequency mixer tie geophone, and wave detector connects audio filter circuit, audio filter Wave circuit connects controllable digital regulation resistance, and controllable digital regulation resistance connects audio amplifier circuit, and AGC control circuit is separately connected inspection Wave device and radio frequency amplifying circuit, controllable digital regulation resistance connection control and the processor in display unit, frequency mixer and second mix Frequency device all rate of connections synthesis units.

7. a kind of portable very high frequency(VHF) transceiver as claimed in claim 6, it is characterised in that: RF Amplifier Module includes band Bandpass filter and radio frequency amplifying circuit.

8. a kind of portable very high frequency(VHF) transceiver as claimed in claim 6, it is characterised in that: intermediate frequency amplification module specifically wraps Include intermediate frequency crystal filter and IF amplifier circuit.

9. a kind of portable very high frequency(VHF) transceiver as described in claim 1, it is characterised in that: frequency synthesis unit is by voltage-controlled Oscillator, phase discriminator, loop filter, processor composition, phase discriminator linkloop filter, loop filter connect voltage-controlled vibration Device, voltage controlled oscillator output frequency signal and feedback frequency signal are swung to phase discriminator, and phase discriminator setting parameter is controlled by processor.

10. a kind of portable very high frequency(VHF) transceiver as described in claim 1, it is characterised in that: Power Management Unit is specific Power supply is provided for electricity consumption device by power supply control chip for battery.