CN203747815U - Dual-channel receiver - Google Patents
Dual-channel receiver Download PDFInfo
- Publication number
- CN203747815U CN203747815U CN201420085587.6U CN201420085587U CN203747815U CN 203747815 U CN203747815 U CN 203747815U CN 201420085587 U CN201420085587 U CN 201420085587U CN 203747815 U CN203747815 U CN 203747815U
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- channel
- filter
- circuit
- switch
- amplifier
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Abstract
The utility model relates to a receiving device used in radar signal measurement, which is composed of a left signal receiving channel and a right signal receiving channel which are identical, wherein the 2-18GHz radio-frequency signal receiving channel is formed by sequentially connecting a limiting switch amplifying circuit, a switch filter group, an amplifying and detecting circuit, and a differential circuit; and the 26.5-40GHz radio-frequency signal receiving channel is formed by sequentially connecting an amplifier, a detecting circuit, a video amplifying circuit and a differential circuit. The utility model aims to provide the dual-channel receiver which has the advantages of high sensitivity, good reliability, small size and low cost.
Description
Technical field
The utility model relates to reception of wireless signals field, particularly a kind of two-channel receiver.
Background technology
In the face of day by day complicated Electronic Warfare Environment, must, in very wide bandwidth range, carry out quick, high-precision measurement to radar signal.Traditional analog receiver certainty of measurement is lower, and along with the development of large scale integrated circuit, wideband digital reception technique becomes an important development direction of electronic reconnaissance.
Compare with traditional simulation reception technique, digital receiver has the multiple advantages such as resolution is high, reliability is high, antijamming capability is strong, flexibility and changeability.Broadband, great dynamic range, highly sensitive digital receiver have a wide range of applications in electronic countermeasures field.But also there is the problem that integrated level is poor, cost is high in existing receiver.
Utility model content
For above problem, the utility model provides a kind of two-channel receiver, formed by left and right two identical signal receive paths, wherein: 2 ~ 18GHz radiofrequency signal receive path is linked in sequence and is formed by amplitude limit switch amplifying circuit, switch filter group, amplification demodulatoring circuit, difference channel; 26.5 ~ 40GHz radiofrequency signal receive path is linked in sequence and is formed by amplifier, detecting circuit, video amplifier circuit, difference channel.
Described amplitude limit switch amplifying circuit is connected to form successively by high pass filter, amplitude limiter, switch one, amplifier one, temperature compensation equalizing circuit, and described switch also receives the signal of self-inspection source output; Described high pass filter is 2GHz high pass filter.
Described switch filter group is divided into 5 passages according to signal frequency difference, be respectively the Five-channel at four-way, filter five and filter six places at third channel, filter four places at second channel, filter three places at first passage, filter two places at filter one place, with upper channel two ends, switch two and switch three be set respectively.
Described amplification demodulatoring circuit comprises amplifier two and wave detector.
Detecting circuit in 26.5 ~ 40GHz radiofrequency signal receive path adopts logarithmic detector amplifier (DLVA), and dynamic range is large, and detection linear characteristic is good.
The utility model has reached following beneficial effect: video output sensitivity is improved, and has good reliability, by adopting the chip of high integration, has reduced equipment volume, has reduced cost.
Brief description of the drawings
Fig. 1 is the theory diagram of the utility model two-channel receiver.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail:
As shown in Figure 1, XyL, XzL are respectively the two paths of signals that left and right passage receives, and are 2～18GHz radiofrequency signal, through amplitude limiting amplifier circuit, a series of gains are amplified, the maximum adjustment of temperature compensation element circuit dynamically can reach 8dB, but in order to ensure good matching properties, is conventionally controlled within the scope of 4dB.
Switch filter group is made up of 5 switch filtering passages:
First via E band filter is low pass filter, it is low pass filter that the second tunnel communication suppresses band filter, Third Road G-band filter low pass filter, Si road IJ band filter is 8.5GHz high pass filter, it is band stop filter that Wu road Ku defends logical inhibition band filter.
The left and right passage of receiver receives radiofrequency signal, amplifies through 2GHz high pass filter, amplitude limit switch, and by temperature compensation equalizing circuit, through the processing of switch filter group gating, feed-in wave detector, carries out carrying out differential conversion output difference sub-signal after detection amplification again.
XyH, XzH are the millimere-wave band signal that left and right passage receives, i.e. 26.5～40GHz radiofrequency signal, and signal amplifies and carries out video amplifier again through amplifier post-detection, by differential conversion output difference sub-signal.
The above; it is only preferred embodiment of the present utility model; be not the restriction of the utility model being made to any other form, and according to any amendment or equivalent variations that technical spirit of the present utility model is done, still belong to the utility model scope required for protection.
Claims (6)
1. a two-channel receiver, is made up of left and right two identical signal receive paths, it is characterized in that: 2 ~ 18GHz radiofrequency signal receive path is linked in sequence and is formed by amplitude limit switch amplifying circuit, switch filter group, amplification demodulatoring circuit, difference channel; 26.5 ~ 40GHz radiofrequency signal receive path is linked in sequence and is formed by amplifier, detecting circuit, video amplifier circuit, difference channel.
2. two-channel receiver according to claim 1, it is characterized in that: described amplitude limit switch amplifying circuit is connected to form successively by high pass filter, amplitude limiter, switch one, amplifier one, temperature compensation equalizing circuit, described switch also receives the signal of self-inspection source output.
3. two-channel receiver according to claim 2, is characterized in that: described high pass filter is 2GHz high pass filter.
4. two-channel receiver according to claim 2, it is characterized in that: described switch filter group is divided into 5 passages according to signal frequency difference, be respectively the Five-channel at four-way, filter five and filter six places at third channel, filter four places at second channel, filter three places at first passage, filter two places at filter one place, with upper channel two ends, switch two and switch three be set respectively.
5. two-channel receiver according to claim 1, is characterized in that: described amplification demodulatoring circuit comprises amplifier two and wave detector.
6. two-channel receiver according to claim 1, is characterized in that: the detecting circuit in described 26.5 ~ 40GHz radiofrequency signal receive path adopts logarithmic detector amplifier (DLVA).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420085587.6U CN203747815U (en) | 2014-02-27 | 2014-02-27 | Dual-channel receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420085587.6U CN203747815U (en) | 2014-02-27 | 2014-02-27 | Dual-channel receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747815U true CN203747815U (en) | 2014-07-30 |
Family
ID=51347564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420085587.6U Expired - Fee Related CN203747815U (en) | 2014-02-27 | 2014-02-27 | Dual-channel receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203747815U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353227A (en) * | 2015-11-30 | 2016-02-24 | 威海北洋电气集团股份有限公司 | Wireless electromagnetic wave detection device |
| CN111142079A (en) * | 2019-12-18 | 2020-05-12 | 北京海兰信数据科技股份有限公司 | Navigation radar receiver system |
-
2014
- 2014-02-27 CN CN201420085587.6U patent/CN203747815U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353227A (en) * | 2015-11-30 | 2016-02-24 | 威海北洋电气集团股份有限公司 | Wireless electromagnetic wave detection device |
| CN105353227B (en) * | 2015-11-30 | 2018-08-14 | 威海北洋电气集团股份有限公司 | Radio magnetic wave detection device |
| CN111142079A (en) * | 2019-12-18 | 2020-05-12 | 北京海兰信数据科技股份有限公司 | Navigation radar receiver system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 |