CN207650404U - A kind of signal receiving device of Beidou navigation jamproof system - Google Patents
A kind of signal receiving device of Beidou navigation jamproof system Download PDFInfo
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- CN207650404U CN207650404U CN201721633038.8U CN201721633038U CN207650404U CN 207650404 U CN207650404 U CN 207650404U CN 201721633038 U CN201721633038 U CN 201721633038U CN 207650404 U CN207650404 U CN 207650404U
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- frequency
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- beidou navigation
- receiving device
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Abstract
The utility model proposes a kind of signal receiving devices of Beidou navigation jamproof system, including：Apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, filter and AD converter, digital signal processor, keyboard, liquid crystal display, electric power monitor and clock counter, the output end of frequency mixer is connected with the input terminal of intermediate frequency amplifier, the output end of intermediate frequency amplifier is connected with the input terminal of filter, the output end of filter is connected with the input terminal of AD converter, the input terminal of AD converter is connected with the input terminal of digital signal processor, electric power monitor and clock counter, and the microcontroller in apparatus for frequency synthesizing is further connect with keyboard and liquid crystal display.The utility model is characterized in that the Beidou antenna signal of access is carried out frequency synthesis, there is higher frequency stability.
Description
Technical field
The utility model is related to Beidou navigation technical characteristic, more particularly to a kind of signal of Beidou navigation jamproof system connects
Receiving apparatus.
Background technology
The docking collection of letters number is needed to carry out down coversion and a upconversion process in Beidou navigation jamproof system, for 1222MHz
Local oscillation signal requires that stability is high, mutually makes an uproar that low, clutter recognition is high, while requiring frequency synthesis unit volume stringent；Existing frequency
Rate combiner circuit is composed using the discrete components such as frequency divider, phase discriminator, low-pass filter, VCO, and stability is poor, noise
Interfere more, and volume is larger.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of signal reception of Beidou navigation jamproof system
Device, element circuit design make that frequency stability is high, mutually makes an uproar that low, clutter recognition is high, and circuit volume is substantially reduced.
The utility model to achieve the above object, proposes a kind of signal receiving device of Beidou navigation jamproof system, packet
It includes：Apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, filter and AD converter, digital signal processor, keyboard, liquid crystal
Display screen, electric power monitor and clock counter, wherein the apparatus for frequency synthesizing is connect with the input terminal of the frequency mixer, institute
The output end for stating frequency mixer is connected with the input terminal of the intermediate frequency amplifier, the output end of the intermediate frequency amplifier and the filtering
The input terminal of device is connected, and the output end of the filter is connected with the input terminal of the AD converter, the AD converter it is defeated
Enter end with the input terminal of the digital signal processor, the electric power monitor and clock counter to be connected, the frequency synthesis
Microcontroller in device is further connect with the keyboard and liquid crystal display further, and the microcontroller uses 8 AVR monolithics
Machine.
Further, the apparatus for frequency synthesizing includes：Microcontroller, integrated PLL frequency synthesizer, two power splitters, the one or three
Power splitter, the two or three power splitter, amplifier, crystal oscillating circuit, the integrated PLL frequency synthesizer respectively with the crystal oscillating circuit,
Microcontroller, the connection of two power splitters, two power splitter exports all the way is connected to three amplifiers by the one or three power splitter,
The another way output of two power splitter connects the other three amplifier by the two or three power splitter.
Further, the crystal oscillating circuit uses the Voltage-Controlled Temperature Compensated Crystal Oscillator of model CFPT-126.
Further, each amplifier uses the broad band amplifier of model upc2709TB-3.
Further, each local oscillation signal that the amplifier output frequency is identical, power is equal.
Further, the frequency stability of the local oscillation signal is located at 1222MHz ± 0.01MHz.
Further, the clock counter uses the counter of model JSY-10.
The utility model is characterized in that：Using apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, filter and AD conversion
Device, digital signal processor, keyboard, liquid crystal display, electric power monitor and clock counter are realized to Beidou antenna signal
Reception and frequency synthesis and signal processing, pass through apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, filter and AD converter
It realizes the frequency synthesis of the docking collection of letters number and is filtered, filtering interference signals, and can check signal by liquid crystal display
Quality.Also, using the apparatus for frequency synthesizing with high stability, the multichannel local oscillation signal of output, frequency stability control exists
1222MHz ± 0.01MHz, mutually make an uproar≤- 90dBc 10KHz, interference wave restranint≤- 60dBc, 50% or more circuit volume-diminished.
Description of the drawings
Fig. 1 is that the circuit of the signal receiving device of the Beidou navigation jamproof system of the utility model connects block diagram；
Fig. 2 is the structure chart of the apparatus for frequency synthesizing of the utility model.
Specific implementation mode
As depicted in figs. 1 and 2, the signal receiving device of the Beidou navigation jamproof system of the utility model, including：Frequency
Synthesizer 10, frequency mixer 20, intermediate frequency amplifier 30, filter 40 and AD converter 50, digital signal processor 60, keyboard
70, liquid crystal display 80, electric power monitor 90 and clock counter 100.
Wherein, apparatus for frequency synthesizing includes：Microcontroller 2, integrated PLL frequency synthesizer 3, two power splitters 4, the one or three work(point
Device 5, the two or three power splitter 6, amplifier, crystal oscillating circuit 1, wherein integrated PLL frequency synthesizer 3 respectively with crystal oscillating circuit 1, AVR
Microcontroller 2, the connection of two power splitters 4, the output of two power splitters, 4 one tunnel by the one or three power splitter 5 connect three amplifiers (71,72,
73), the another way output of two power splitters 4 connects the other three amplifier (74,75,76) by the two or three power splitter 6.Each put
The input terminal of big device and frequency mixer connects, and the output end of frequency mixer is connected with the input terminal of intermediate frequency amplifier, intermediate frequency amplifier
Output end is connected with the input terminal of filter, and the output end of filter is connected with the input terminal of AD converter, AD converter it is defeated
Enter end with the input terminal of digital signal processor, electric power monitor and clock counter to be connected, the monolithic in apparatus for frequency synthesizing
Machine is further connect with keyboard and liquid crystal display.
In the embodiments of the present invention, crystal oscillating circuit 1：By rakon companies Voltage-Controlled Temperature Compensated Crystal Oscillator CFPT-126 and
Peripheral circuit generates the reference frequency 10MHz of high stability；
Microcontroller 2：Using 8 AVR single chips 2 of ATTINY13A-10SSU types.
Integrated PLL frequency synthesizer 3：Using the LMX2531LQ2570E integrated chips of state half, 3V power supplies 41mA or so electricity
The low-power consumption of stream is completely integrated with frequency divider, phase discriminator, VCO etc., at the same be internally integrated low noise, high-precision low pressure
Poor voltage-stablizer LDO so that system has higher noise suppressed performance and stability.When being used cooperatively with reference to crystal oscillator with high quality
When, highly stable, low noise local oscillated signal can be generated.
One or three power splitter 5 and the two or three power splitter 6 use MINI company SCN-2-15, SCN-3-16 Surface Mount microminiature devices
Part.
Each amplifier uses NEC Corporation's upc2709TB-3 broad band amplifiers, low in energy consumption, gain to be up to 23dB, and Surface Mount is super
Miniature device makes circuit volume be substantially reduced.
In the embodiments of the present invention, clock counter uses the counter of model JSY-10.
The utility model can carry out the emulation of parameters in advance with radio frequency simulation software for circuit.Operation principle：
Crystal oscillating circuit 1 provides 10MHz reference frequencies, injects AVR single chip 2 by the C programmer that PC machine is write, controllable after power-up
PLL frequency synthesizer 3 processed changes its internal storage parameter, is divided, the processing of phase demodulation frequency discrimination, and internal VCO outputs are controlled
1222MHz signals, it is total using two power splitters 4, the one or three power splitter 5, the two or three power splitter 6 and 6 amplifiers, final output
6 local oscillation signals that tunnel frequency is identical, power is equal, the frequency-conversion processing that Big Dipper satellite signal is carried out for other units.Also,
It can be checked convenient for user with observation signal quality by the keyboard and liquid crystal display that are connected with microcontroller.
The utility model is using apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, filter and AD converter, number letter
Number processor, keyboard, liquid crystal display, electric power monitor and clock counter realize the reception to Beidou antenna signal and frequency
Rate synthesizes and signal processing, is realized and is docked by apparatus for frequency synthesizing, frequency mixer, intermediate frequency amplifier, filter and AD converter
It the frequency synthesis collected mail number and is filtered, filtering interference signals, and can check signal quality by liquid crystal display.And
And using the apparatus for frequency synthesizing with high stability, the multichannel local oscillation signal of output, frequency stability control is in 1222MHz
± 0.01MHz, mutually make an uproar≤- 90dBc 10KHz, interference wave restranint≤- 60dBc, 50% or more circuit volume-diminished.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiments or example.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the scope of the utility model, change, replace and
Modification.The scope of the utility model is by appended claims and its equivalent limits.
Claims (8)
1. a kind of signal receiving device of Beidou navigation jamproof system, it is characterised in that：Apparatus for frequency synthesizing, frequency mixer, in
Audio amplifier, filter and AD converter, digital signal processor, keyboard, liquid crystal display, electric power monitor and clock count
Device, wherein the apparatus for frequency synthesizing is connect with the input terminal of the frequency mixer, the output end of the frequency mixer and the intermediate frequency
The input terminal of amplifier is connected, and the output end of the intermediate frequency amplifier is connected with the input terminal of the filter, the filter
Output end be connected with the input terminal of the AD converter, the input terminal of the AD converter and the digital signal processor,
The electric power monitor is connected with the input terminal of clock counter, the microcontroller in the apparatus for frequency synthesizing further with it is described
Keyboard is connected with liquid crystal display.
2. the signal receiving device of Beidou navigation jamproof system as described in claim 1, which is characterized in that the frequency is closed
Include at device：Microcontroller, integrated PLL frequency synthesizer, two power splitters, the one or three power splitter, the two or three power splitter, amplification
Device, crystal oscillating circuit, the integrated PLL frequency synthesizer is connect with the crystal oscillating circuit, microcontroller, two power splitters respectively, described
Two power splitters export all the way is connected to three amplifiers, the another way output of two power splitter by the one or three power splitter
The other three amplifier is connected by the two or three power splitter.
3. the signal receiving device of Beidou navigation jamproof system as claimed in claim 2, which is characterized in that the microcontroller
Using 8 AVR single chips.
4. the signal receiving device of Beidou navigation jamproof system as claimed in claim 2, which is characterized in that the crystal oscillator electricity
Road uses the Voltage-Controlled Temperature Compensated Crystal Oscillator of model CFPT-126.
5. the signal receiving device of Beidou navigation jamproof system as claimed in claim 2, which is characterized in that put described in each
Big device uses the broad band amplifier of model upc2709TB-3.
6. the signal receiving device of Beidou navigation jamproof system as claimed in claim 2, which is characterized in that put described in each
The local oscillation signal that big device output frequency is identical, power is equal.
7. the signal receiving device of Beidou navigation jamproof system as claimed in claim 6, which is characterized in that the local oscillator letter
Number frequency stability be located at 1222MHz ± 0.01MHz.
8. the signal receiving device of Beidou navigation jamproof system as described in claim 1, which is characterized in that the clock meter
Number device uses the counter of model JSY-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721633038.8U CN207650404U (en) | 2017-11-28 | 2017-11-28 | A kind of signal receiving device of Beidou navigation jamproof system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721633038.8U CN207650404U (en) | 2017-11-28 | 2017-11-28 | A kind of signal receiving device of Beidou navigation jamproof system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207650404U true CN207650404U (en) | 2018-07-24 |
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ID=62882826
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721633038.8U Active CN207650404U (en) | 2017-11-28 | 2017-11-28 | A kind of signal receiving device of Beidou navigation jamproof system |
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| CN (1) | CN207650404U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072882A (en) * | 2017-11-28 | 2018-05-25 | 天津七六四通信导航技术有限公司 | A kind of Beidou navigation jamproof system and its signal receiving device |
| CN108880585A (en) * | 2018-09-11 | 2018-11-23 | 武汉维力克科技有限公司 | Signal transmission and reception apparatus based on filter |
-
2017
- 2017-11-28 CN CN201721633038.8U patent/CN207650404U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072882A (en) * | 2017-11-28 | 2018-05-25 | 天津七六四通信导航技术有限公司 | A kind of Beidou navigation jamproof system and its signal receiving device |
| CN108880585A (en) * | 2018-09-11 | 2018-11-23 | 武汉维力克科技有限公司 | Signal transmission and reception apparatus based on filter |
| CN108880585B (en) * | 2018-09-11 | 2021-01-15 | 武汉维力克科技有限公司 | Signal receiving and transmitting device based on filter |
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