CN203608193U - Hand-held short-wave radio station based on radio frequency digitalization - Google Patents
Hand-held short-wave radio station based on radio frequency digitalization Download PDFInfo
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- CN203608193U CN203608193U CN201320803927.XU CN201320803927U CN203608193U CN 203608193 U CN203608193 U CN 203608193U CN 201320803927 U CN201320803927 U CN 201320803927U CN 203608193 U CN203608193 U CN 203608193U
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Abstract
The utility model belongs to the technical field of hand-held short-wave radio stations, and discloses a hand-held short-wave radio station based on radio frequency digitalization. The hand-held short-wave radio station based on the radio frequency digitalization comprises an antenna, a band-pass filter, a radio frequency signal analog-to-digital converter, an FPGA, a DSP chip, an audio digital-to-analog converter, an audio interface, an audio analog-to-digital converter, a radio frequency signal digital-to-analog converter, a power amplifier and a low-pass filter. The antenna is provided with an antenna tuner which is electrically connected with the band-pass filter and the low-pass filter respectively. The band-pass filter is electrically connected with the radio frequency signal analog-to-digital converter. The FPGA is electrically connected with the radio frequency signal analog-to-digital converter, the audio digital-to-analog converter, the audio analog-to-digital converter, the radio frequency signal digital-to-analog converter and the DSP chip respectively. The audio interface is electrically connected with the audio digital-to-analog converter and the audio analog-to-digital converter respectively. The output end of the radio frequency signal digital-to-analog converter is electrically connected with the power amplifier which is electrically connected with the low-pass filter.
Description
Technical field
The utility model belongs to hand-held short-wave radio set technical field, particularly a kind of hand-held short-wave radio set based on RF digitization.
Background technology
Along with the development of the communication technology, miniaturization, portable requirement to short wave communication equipment are day by day urgent.But because short wave communication is very high for equipment requirement, traditional loading backpack shortwave radio design is complicated, is difficult to further reduce volume and weight, reduces power consumption.
Utility model content
The purpose of this utility model is to propose a kind of hand-held short-wave radio set based on RF digitization.This hand-held short-wave radio set based on RF digitization can promote the portability of shortwave equipment greatly, alleviates equipment carrier's burden.
For realizing above-mentioned technical purpose, the utility model adopts following technical scheme to be achieved.
Based on a hand-held short-wave radio set for RF digitization, comprising: antenna, band pass filter, radiofrequency signal analog to digital converter, FPGA, dsp chip, audio digital to analog converter, audio interface, audio frequency analog to digital converter, radiofrequency signal digital to analog converter, power amplifier, low pass filter; On described antenna, be provided with antenna tuner;
Described antenna tuner is electrically connected respectively the input of band pass filter and the output of low pass filter, the input of described band pass filter output electrical connection radiofrequency signal analog to digital converter;
Described FPGA is electrically connected respectively the output of radiofrequency signal analog to digital converter, the input of audio digital to analog converter, the output of audio frequency analog to digital converter, input and the dsp chip of radiofrequency signal digital to analog converter, and described audio interface is electrically connected respectively the output of audio digital to analog converter and the input of audio frequency analog to digital converter;
The input of the output electrical connection power amplifier of described radiofrequency signal digital to analog converter, the input of the output electrical connection low pass filter of described power amplifier.
Feature of the present utility model and further improvement are:
The described kind of hand-held short-wave radio set based on RF digitization, also comprises the arm processor that is electrically connected FPGA.The described hand-held short-wave radio set based on RF digitization, also comprises button and display screen, and described arm processor is electrically connected respectively button and display screen.
Described antenna is whip antenna, inclined antenna or dipole antenna.
The beneficial effects of the utility model are: can greatly promote the portability of shortwave equipment, alleviate equipment carrier's burden, make short wave communication maneuverability more.Meanwhile, there is outstanding performance, have very powerful antijam communication ability, can adapt to the communicating requirement under various complex environments.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of a kind of hand-held short-wave radio set based on RF digitization of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
With reference to Fig. 1, it is the electrical block diagram of a kind of hand-held short-wave radio set based on RF digitization of the present utility model.Should comprise antenna by the hand-held short-wave radio set based on RF digitization, on antenna, be provided with antenna tuner, antenna is the antenna of whip antenna, inclined antenna, dipole antenna or other types, antenna tuner automatic antenna tuner (can antenna system automatically generating the parameter of counterpart impedance matching network), can fast automatic coupling polytype antenna.The hand-held short-wave radio set being somebody's turn to do based on RF digitization also comprises band pass filter, radiofrequency signal analog to digital converter and FPGA(Field Programmable Gate Array).The input of antenna tuner electrical connection band pass filter, the input of band pass filter output electrical connection radiofrequency signal analog to digital converter, the output electrical connection FPGA of radiofrequency signal analog to digital converter.
In the time that the above-mentioned hand-held short-wave radio set based on RF digitization receives signal, carry out impedance matching from the analog radio-frequency signal of antenna through antenna tuner, then analog radio-frequency signal enters band pass filter and carries out filtering processing.Enter radiofrequency signal analog to digital converter through filtered analog radio-frequency signal, after analog-to-digital conversion, become digital radio signal.This digital radio signal is sent to FPGA and is for further processing.In the utility model embodiment, the above-mentioned hand-held short-wave radio set based on RF digitization also comprises: dsp chip, audio digital to analog converter and audio interface.FPGA is electrically connected respectively input and the dsp chip of audio digital to analog converter, FPGA is after the digital radio signal of receiving from radiofrequency signal analog to digital converter, it is carried out to down-converted, digital radio signal is converted into digital baseband signal, digital baseband signal is sent to dsp chip by FPGA, dsp chip carries out base band demodulating to digital baseband signal, and the digital audio and video signals then demodulation being generated returns to FPGA.Digital audio and video signals is sent to audio digital to analog converter by FPGA, the output of audio interface electrical connection audio digital to analog converter, now audio digital to analog converter carries out digital-to-analogue conversion to digital audio and video signals, and the simulated audio signal that conversion is produced is sent to audio interface.Now just can hear corresponding sound at equipment such as audio interface place the street loud speakers.
In the utility model embodiment, the above-mentioned hand-held short-wave radio set based on RF digitization also comprises audio frequency analog to digital converter, radiofrequency signal digital to analog converter, power amplifier and low pass filter.The input of this audio interface electrical connection audio frequency analog to digital converter, FPGA is electrically connected respectively the output of audio frequency analog to digital converter and the input of radiofrequency signal digital to analog converter.In the time that the above-mentioned hand-held short-wave radio set based on RF digitization transmits, connect audio input device (for example microphone) by audio interface, now, audio frequency analog to digital converter receives simulated audio signal, and simulated audio signal is carried out to analog-to-digital conversion, the digital audio and video signals after analog-to-digital conversion is sent to FPGA.Digital audio and video signals is sent to dsp chip by FPGA, and dsp chip carries out baseband modulation to this digital audio and video signals, and the digital baseband signal that baseband modulation is produced returns to FPGA.FPGA carries out upconversion process to this digital baseband signal, produces digital radio signal.This digital radio signal is sent to radiofrequency signal digital to analog converter by FPGA.In the utility model embodiment, the input of the output electrical connection power amplifier of radiofrequency signal digital to analog converter, the input of the output electrical connection low pass filter of power amplifier, the output of antenna tuner electrical connection low pass filter.Radiofrequency signal digital to analog converter is after receiving digital radio signal, it is carried out to digital-to-analogue conversion, analog radio-frequency signal after digital-to-analogue conversion is fed through to power amplifier, and power amplifier sends it to low pass filter after analog radio-frequency signal is amplified.In low pass filter, analog radio-frequency signal is carried out to filtering processing, filtering harmonic component and idle component, be then fed through antenna tuner by filtered analog radio-frequency signal and complete impedance matching, finally by antenna, analog radio-frequency signal sent.
In the utility model embodiment, the above-mentioned hand-held short-wave radio set based on RF digitization also comprises arm processor and man-machine interaction unit.Man-machine interaction unit comprises button and display screen, and arm processor is electrically connected respectively FPGA, button and display screen.Button is for inputting various setup parameters to arm processor, arm processor decides the mode of operation (frequency fixing communication of transmitting according to the input of button, frequency hopping communications, automatically control communication, four kinds of mode of operations of adaptive communications), and select various functions (thering is unencryped word, acoustic code words, data flow, datagram and encryption function), send corresponding control signal to FPGA, under the associated treatment of FPGA, dsp chip, can complete as required communication process.When above-mentioned hand-held short-wave radio set transmitted signal based on RF digitization or while receiving signal, display screen receives corresponding signal by arm processor, can show radio mode and information etc.
The Direct Conversion that can realize baseband signal and radiofrequency signal based on the hand-held short-wave radio set of RF digitization of the present utility model, and without the process of intermediate frequency and double conversion, greatly simplify design, greatly reduce the volume and weight of short-wave radio set, promote the reliability of short-wave radio set, reduced power consumption simultaneously.Should the hand-held short-wave radio set based on RF digitization be the anti-interference radio station of 5W shortwave hand-hold type of a very light and flexible, its operating frequency range be from 2MHz to 29.9999MHz.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (4)
1. the hand-held short-wave radio set based on RF digitization, it is characterized in that, comprising: antenna, band pass filter, radiofrequency signal analog to digital converter, FPGA, dsp chip, audio digital to analog converter, audio interface, audio frequency analog to digital converter, radiofrequency signal digital to analog converter, power amplifier, low pass filter; On described antenna, be provided with antenna tuner;
Described antenna tuner is electrically connected respectively the input of band pass filter and the output of low pass filter, the input of described band pass filter output electrical connection radiofrequency signal analog to digital converter;
Described FPGA is electrically connected respectively the output of radiofrequency signal analog to digital converter, the input of audio digital to analog converter, the output of audio frequency analog to digital converter, input and the dsp chip of radiofrequency signal digital to analog converter, and described audio interface is electrically connected respectively the output of audio digital to analog converter and the input of audio frequency analog to digital converter;
The input of the output electrical connection power amplifier of described radiofrequency signal digital to analog converter, the input of the output electrical connection low pass filter of described power amplifier.
2. a kind of hand-held short-wave radio set based on RF digitization as claimed in claim 1, is characterized in that, also comprises the arm processor that is electrically connected FPGA.
3. a kind of hand-held short-wave radio set based on RF digitization as claimed in claim 2, is characterized in that, also comprise button and display screen, described arm processor is electrically connected respectively button and display screen.
4. a kind of hand-held short-wave radio set based on RF digitization as claimed in claim 1, is characterized in that, described antenna is whip antenna, inclined antenna or dipole antenna.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320803927.XU CN203608193U (en) | 2013-12-06 | 2013-12-06 | Hand-held short-wave radio station based on radio frequency digitalization |
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| CN201320803927.XU CN203608193U (en) | 2013-12-06 | 2013-12-06 | Hand-held short-wave radio station based on radio frequency digitalization |
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| CN203608193U true CN203608193U (en) | 2014-05-21 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506216A (en) * | 2014-12-18 | 2015-04-08 | 陕西烽火实业有限公司 | Short-wave and ultra-short-wave pilot-frequency conversion communication system and method |
| CN105162476A (en) * | 2015-08-20 | 2015-12-16 | 牟丽 | Embedded automatic tuning control system of short wave transmitter |
| CN105356955A (en) * | 2015-12-01 | 2016-02-24 | 陕西烽火实业有限公司 | Business simulation device applicable to network performance test and method |
| CN107948863A (en) * | 2017-12-29 | 2018-04-20 | 陕西烽火电子股份有限公司 | A kind of directional audio signal detection device and method based on FFT |
| CN109547893A (en) * | 2017-09-22 | 2019-03-29 | 深圳科润视讯技术有限公司 | A kind of wireless audio system |
| CN111131111A (en) * | 2019-12-31 | 2020-05-08 | 陕西烽火电子股份有限公司 | Amplitude-modulated signal digital coherent demodulation system and method |
| CN111917424A (en) * | 2020-08-05 | 2020-11-10 | 南京熊猫电子股份有限公司 | Low-emission broadband noise no-load short-wave radio station and implementation method thereof |
| CN115361631A (en) * | 2022-07-28 | 2022-11-18 | 昆明理工大学 | Wireless microphone system and method thereof |
-
2013
- 2013-12-06 CN CN201320803927.XU patent/CN203608193U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506216A (en) * | 2014-12-18 | 2015-04-08 | 陕西烽火实业有限公司 | Short-wave and ultra-short-wave pilot-frequency conversion communication system and method |
| CN105162476A (en) * | 2015-08-20 | 2015-12-16 | 牟丽 | Embedded automatic tuning control system of short wave transmitter |
| CN105356955A (en) * | 2015-12-01 | 2016-02-24 | 陕西烽火实业有限公司 | Business simulation device applicable to network performance test and method |
| CN105356955B (en) * | 2015-12-01 | 2018-05-04 | 陕西烽火实业有限公司 | Suitable for the service analogue apparatus and method of short-wave radio set applied in network performance test |
| CN109547893A (en) * | 2017-09-22 | 2019-03-29 | 深圳科润视讯技术有限公司 | A kind of wireless audio system |
| CN107948863A (en) * | 2017-12-29 | 2018-04-20 | 陕西烽火电子股份有限公司 | A kind of directional audio signal detection device and method based on FFT |
| CN111131111A (en) * | 2019-12-31 | 2020-05-08 | 陕西烽火电子股份有限公司 | Amplitude-modulated signal digital coherent demodulation system and method |
| CN111131111B (en) * | 2019-12-31 | 2023-11-14 | 陕西烽火电子股份有限公司 | Amplitude modulation signal digital coherent demodulation system and method |
| CN111917424A (en) * | 2020-08-05 | 2020-11-10 | 南京熊猫电子股份有限公司 | Low-emission broadband noise no-load short-wave radio station and implementation method thereof |
| CN111917424B (en) * | 2020-08-05 | 2022-02-22 | 南京熊猫电子股份有限公司 | Low-emission broadband noise no-load short-wave radio station and implementation method thereof |
| CN115361631A (en) * | 2022-07-28 | 2022-11-18 | 昆明理工大学 | Wireless microphone system and method thereof |
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Granted publication date: 20140521 |
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