CN102571118A - Single-channel receiver with self-detection function - Google Patents
Single-channel receiver with self-detection function Download PDFInfo
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- CN102571118A CN102571118A CN 201010586560 CN201010586560A CN102571118A CN 102571118 A CN102571118 A CN 102571118A CN 201010586560 CN201010586560 CN 201010586560 CN 201010586560 A CN201010586560 A CN 201010586560A CN 102571118 A CN102571118 A CN 102571118A
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Abstract
The invention discloses a single-channel receiver with self-detection function, which relates to the field of microwave communication and electronic equipment and aims to solve the technical problems of a traditional single-channel receiver with self-detection function in low sensitivity, less function, lack of self-detection function, and the like. The single-channel receiver with self-detection function is characterized in that an input end of a coupler (13) is connected with the input of an antenna low noise amplifier; an output end of the coupler is sequentially connected with a first input end of the low noise amplifier (2), a filter I (3), an amplifier I (4) and an amplifier II (5) in series and then is connected with one input end of a mixer (7); an output end of a local oscillating circuit (6) is connected with another input end of the mixer (7); and an output end of the mixer (7) outwards outputs a video signal after being sequentially connected with an amplifier II (9), a filter IV (10), a video detector (11) and a video amplifier (12) in series.
Description
Technical field
The present invention relates to microwave communication, electronic device field, particularly a kind of single-channel receiver with self-checking function.
Background technology
The single-channel receiver of band self-checking function is the crucial part in the communication system; For the protection whole system stable, operating accuracy is high, usually require the single-channel receiver of band self-checking function have highly sensitive, characteristics such as self-checking function, operating temperature range are wide, good stability are arranged.
And the single-channel receiver of at present common on the market band self-checking function is mainly continued to use traditional design, has following problems and shortcomings:
1. sensitivity is not high;
2. function is few;
3. there is not self-checking function.
Summary of the invention
The present invention is intended to solve that the single-channel receiver sensitivity of tradition band self-checking function is not high, function is few, do not have technical problem such as self-checking function, so that a kind of single-channel receiver that highly sensitive, wide dynamic range, band suppress, have the band self-checking function of characteristics such as self-checking function, operating temperature range are wide, good stability outward that has to be provided.
The objective of the invention is to realize through following technical scheme.
The single-channel receiver of band self-checking function of the present invention; The input of isolating amplitude limiter 1 connects the input of antenna low noise amplifier; First input end, filter 1, amplifier 1, filter 25 backs that its output is connected in series low noise amplifier 2 in order link to each other with an input of frequency mixer 7; The output of local oscillation circuit 6 connects another input of frequency mixer 7, and the output of frequency mixer 7 is connected in series outwards outputting video signal of amplifier 29, filter 4 10, vision signal detector 11, the video amplifier 12 backs in order; The output of self-test signal generator 13 connects second input of low noise amplifier 2, and its input/output terminal serial connection digital processing unit 14 backs connect the input/output terminal of vision signal detector 11.
The single-channel receiver of band self-checking function of the present invention, the wherein said video amplifier 12 outputs are three the tunnel, connect Video Detection joint, digital processing unit 14 and DC-62P joint respectively.
The single-channel receiver of band self-checking function of the present invention, wherein said filter 1 is the radio frequency intermediate-frequency filter with filter 25.
The single-channel receiver of band self-checking function of the present invention, the specified output frequency of wherein said frequency mixer 7 is 60MHz.
The single-channel receiver of band self-checking function of the present invention, wherein said vision signal detector 11 is AD8310.
The beneficial effect of the single-channel receiver of band self-checking function of the present invention: highly sensitive, wide dynamic range, band suppress, have self-checking function, wide, the good stability of operating temperature range outward.
Description of drawings
Fig. 1 circuit theory diagrams of the present invention
Label declaration among the figure:
1 isolates amplitude limiter, 2 low noise amplifiers, 3 filters one, 4 amplifiers one, 5 filters two, 6 local oscillation circuits, 7 frequency mixers, 8 filters three, 9 amplifiers two, 10 filters four, 11 vision signal detectors, 12 video amplifiers, 13 self-test signal generators, 14 digital processing units
Embodiment
Detailed structure of the present invention, application principle, effect and effect with reference to accompanying drawing 1, are explained through following execution mode.
The single-channel receiver of band self-checking function of the present invention; The input of isolating amplitude limiter 1 connects the input of antenna low noise amplifier; First input end, filter 1, amplifier 1, filter 25 backs that its output is connected in series low noise amplifier 2 in order link to each other with an input of frequency mixer 7; The output of local oscillation circuit 6 connects another input of frequency mixer 7, and the output of frequency mixer 7 is connected in series outwards outputting video signal of amplifier 29, filter 4 10, vision signal detector 11, the video amplifier 12 backs in order; The output of self-test signal generator 13 connects second input of low noise amplifier 2, and its input/output terminal serial connection digital processing unit 14 backs connect the input/output terminal of vision signal detector 11.
The video amplifier 12 outputs are three the tunnel, connect Video Detection joint, digital processing unit 14 and DC-62P joint respectively.
Filter 1 is the radio frequency intermediate-frequency filter with filter 25.The specified output frequency of frequency mixer 7 is 60MHz.Vision signal detector 11 is AD8310.
Below the present invention is described further:
The signal that antenna receives gets into this receiver through external low noise amplifier, at first through coupler 13, isolator 14 and amplitude limiter 1, sends into low noise amplifier 2 and amplifies.Signal after the amplification gets into filter filtering clutter, and signal and local oscillation circuit 6 mixing then obtain the intermediate-freuqncy signal of 60MHz.Intermediate-freuqncy signal is handled the back through amplification filtering and got into video processor, and the demodulated video signal amplifies the back and divides three tunnel outputs: the one road to the output of Video Detection joint, and the second the tunnel gets into digital processing unit 14, and Third Road is by the 22 pin output of DC-62P joint.
Self-test signal generator 13 mainly is the radiofrequency signal that produces an ASK modulation (modulation code is produced by the user or inside modules produces), and its carrier frequency is identical with operating frequency.It is made up of PLL phase-locked loop, ASK modulator.
Video processor is made up of vision signal detector 11, the video amplifier 12 and video driver circuit.Vision signal detector 11 (AD8310) is to the demodulation of intermediate frequency ASK modulation signal, and the vision signal after the demodulation is divided three tunnel outputs through the video amplifier 12 backs.
External LNA connection detection circuit mainly connects situation (open circuit, short circuit, normal) to external LNA and judges.
Through experimental verification, the single-channel receiver of band self-checking function of the present invention has highly sensitive, wide dynamic range, band and suppresses, has plurality of advantages such as self-checking function, operating temperature range are wide, good stability outward.
Claims (5)
1. be with the single-channel receiver of self-checking function; It is characterized in that: the input of isolating amplitude limiter (1) connects the input of antenna low noise amplifier; First input end, filter one (3), amplifier one (4), filter two (5) backs that its output is connected in series low noise amplifier (2) in order link to each other with an input of frequency mixer (7); The output of local oscillation circuit (6) connects another input of frequency mixer (7), and the output of frequency mixer (7) is connected in series outwards outputting video signal of amplifier two (9), filter four (10), vision signal detector (11), the video amplifier (12) back in order; The output of self-test signal generator (13) connects second input of low noise amplifier (2), and its input/output terminal serial connection digital processing unit (14) back connects the input/output terminal of vision signal detector (11).
2. the single-channel receiver of band self-checking function as claimed in claim 1 is characterized in that: the described video amplifier (12) output is three the tunnel, connects Video Detection joint, digital processing unit (14) and DC-62P joint respectively.
3. the single-channel receiver of band self-checking function as claimed in claim 1 is characterized in that: described filter one (3) and filter two (5) are the radio frequency intermediate-frequency filter.
4. the single-channel receiver of band self-checking function as claimed in claim 1 is characterized in that: the specified output frequency of described frequency mixer (7) is 60MHz.
5. the single-channel receiver of band self-checking function as claimed in claim 1 is characterized in that: described vision signal detector (11) is AD8310.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586560 CN102571118A (en) | 2010-12-14 | 2010-12-14 | Single-channel receiver with self-detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586560 CN102571118A (en) | 2010-12-14 | 2010-12-14 | Single-channel receiver with self-detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102571118A true CN102571118A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010586560 Pending CN102571118A (en) | 2010-12-14 | 2010-12-14 | Single-channel receiver with self-detection function |
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| CN (1) | CN102571118A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141324A (en) * | 2015-06-18 | 2015-12-09 | 成都广迈科技有限公司 | Multi-channel receiving device |
| CN107181541A (en) * | 2017-05-16 | 2017-09-19 | 中国电子科技集团公司第四十研究所 | A kind of electromagnetic spectrum monitoring receiver self-checking circuit and receiver |
-
2010
- 2010-12-14 CN CN 201010586560 patent/CN102571118A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141324A (en) * | 2015-06-18 | 2015-12-09 | 成都广迈科技有限公司 | Multi-channel receiving device |
| CN107181541A (en) * | 2017-05-16 | 2017-09-19 | 中国电子科技集团公司第四十研究所 | A kind of electromagnetic spectrum monitoring receiver self-checking circuit and receiver |
| CN107181541B (en) * | 2017-05-16 | 2021-01-22 | 中国电子科技集团公司第四十一研究所 | Electromagnetic spectrum monitoring receiver self-checking circuit and receiver |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |