CN204906592U - Subassembly of integrated intermediate -frequency amplification and video detection - Google Patents
Subassembly of integrated intermediate -frequency amplification and video detection Download PDFInfo
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- CN204906592U CN204906592U CN201520562669.XU CN201520562669U CN204906592U CN 204906592 U CN204906592 U CN 204906592U CN 201520562669 U CN201520562669 U CN 201520562669U CN 204906592 U CN204906592 U CN 204906592U
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- intermediate frequency
- video detection
- assembly
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Abstract
The utility model discloses a subassembly of integrated intermediate -frequency amplification and video detection, it is including all the way or the intermediate frequency treatment circuit and the video detection amplifier circuit of multiple series series, the intermediate frequency treatment circuit divides a ware and a fixed attenuator including the digital control attenuator, amplifier, balanced device, wave filter, the merit that connect gradually, and digital control attenuator's input and intermediate frequency input are connected, and a fixed attenuator's output and IF output end are connected, video detection amplifier circuit includes the 2nd fixed attenuator, wave detector and the operational amplifier who connects gradually, and the 2nd fixed attenuator divides the second output of ware to be connected with the merit, and operational amplifier's output and video output end are connected. The utility model has the characteristics of the upper frequency, great bandwidth, great dynamic, adaptable multiple pulse etc.
Description
Technical field
The utility model relates to the assembly of a kind of integrated intermediate frequency amplification and video detection.
Background technology
Mostly traditional product is to adopt independent intermediate frequency amplification module and video detection module, function singleness, and frequency is low, narrow bandwidth, pulse fall time is long, and dynamic range is little, can beared information amount little, range of application is narrow, is unfavorable for the market development, does not catch up with the needs in market.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the assembly of a kind of integrated intermediate frequency amplification and video detection, has upper frequency, comparatively large bandwidth, compared with great dynamic range, can adapt to the features such as multiple pulse.
The purpose of this utility model is achieved through the following technical solutions: the assembly of a kind of integrated intermediate frequency amplification and video detection, it comprises processing circuitry of intermediate frequency and the video detection amplifying circuit of one or more series connection, described processing circuitry of intermediate frequency comprises the numerical-control attenuator, amplifier, equalizer, filter, power splitter and the first fixed attenuator that connect successively, the input of numerical-control attenuator is connected with IF input terminal, and the output of the first fixed attenuator is connected with medium frequency output end; Described video detection amplifying circuit comprises the second fixed attenuator, wave detector and the operational amplifier that connect successively, and the second fixed attenuator is connected with the second output of power splitter, and the output of operational amplifier is connected with video output terminals.
Further, described filter comprises LC filter and low pass filter.
Further, described assembly also comprises control circuit, and the output of control circuit is connected with the control end of numerical-control attenuator.
Further, described control circuit carries out coordinated signals to the numerical-control attenuator in multichannel processing circuitry of intermediate frequency.
Further, described control circuit also comprises one or more pi type filter, and every road output of control circuit is all connected with pi type filter and carries out filtering process.
Further, described control circuit comprises NL27WZ04DTT1G chip.
Further, described assembly also comprises power supply processing circuit, and described power supply processing circuit comprises linear voltage regulator.
Further, described linear voltage regulator comprises LT1963 pressurizer and TPS79333 pressurizer.
The beneficial effects of the utility model are: the utility model provides multiple-channel output to facilitate the expansion of function, can expand range of application.There is broadband, high dynamic range, low unevenness, consistency is good, interchannel isolation is high, adapt to the advantages such as pulse width range is wide, fall time is short, operating temperature range is wide, good stability.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection range of the present utility model is not limited to the following stated.
As shown in Figure 1, the assembly of a kind of integrated intermediate frequency amplification and video detection, it comprises processing circuitry of intermediate frequency and the video detection amplifying circuit of one or more series connection, described processing circuitry of intermediate frequency comprises the numerical-control attenuator, amplifier, equalizer, filter, power splitter and the first fixed attenuator that connect successively, the input of numerical-control attenuator is connected with IF input terminal, and the output of the first fixed attenuator is connected with medium frequency output end; Described video detection amplifying circuit comprises the second fixed attenuator, wave detector and the operational amplifier that connect successively, and the second fixed attenuator is connected with the second output of power splitter, and the output of operational amplifier is connected with video output terminals.
Further, described filter comprises the LC filter and low pass filter that connect successively.
Further, described assembly also comprises control circuit, and the output of control circuit is connected with the control end of numerical-control attenuator.
Further, described control circuit carries out coordinated signals to the numerical-control attenuator in multichannel processing circuitry of intermediate frequency.
Further, described control circuit also comprises one or more pi type filter, and every road output of control circuit is all connected with pi type filter and carries out filtering process.
Further, described control circuit comprises NL27WZ04DTT1G chip.
Further, described assembly also comprises power supply processing circuit, and described power supply processing circuit comprises linear voltage regulator.
Further, described linear voltage regulator comprises LT1963 pressurizer and TPS79333 pressurizer.
The utility model comprises power supply process, control circuit, processing circuitry of intermediate frequency and video detection amplifying circuit four part.General, four intermediate frequency input interfaces, four video output interfaces, four intermediate frequency output interfaces, four road processing circuitry of intermediate frequency and four road video detection amplifying circuits can be comprised.
Power supply processing circuit adopts the linear voltage regulator LT1963 of LTC company, and+9V supply power voltage is surely arrived+5V.Also adopt the pressurizer TPS79333 of TI company ,+5V supply power voltage is surely arrived+3.3V, for other circuit of the present utility model.
Control circuit uses two not gate NL27WZ04DTT1G chips of ON company, by anti-phase for input control signal rear control numerical-control attenuator.Because the utility model has high isolation degree index, four road numerical-control attenuators are again coordinated signals, and every root control line has all added pi type filter filtering, avoid signal crosstalk on the control line, reduce interchannel isolation.
Processing circuitry of intermediate frequency, video detection amplifying circuit are made up of numerical-control attenuator, amplifier, equalizer, filter, power splitter, fixed attenuator, wave detector, operational amplifier etc., and its working method is as follows:
Four tunnel intermediate-freuqncy signals (250MHz ~ 500MHz) of outside input carry out filtering, amplification, numerical control attenuation through processing circuitry of intermediate frequency, then each road signal are carried out merit and divide, merit divide after signal wherein directly export for subsequent digitation acquisition process in a road; Separately lead up to detect continuously after Log Video Amplifier SDLVA carries out video envelope detection and export.
The each passage of the utility model has two functions, merit divide after signal wherein directly export for subsequent digitation acquisition process in a road; Separately lead up to after video detection amplifying circuit carries out video envelope detection and export, have greatly expanded application.
In the utility model, numerical-control attenuator can adopt HMC470LP3, and operating frequency can reach 3GHz, and attenuation range can arrive 31dB; Amplifier can adopt ABA-54563, and its operating frequency can reach 3.4GHz, gain 23dB; Equalizer can adopt inductive resistance capacitance parallel-connection structure, and device is few, and cost is low, and reliability is high; LC filter can adopt band connection frequency to be 250MHz ~ 500MHz, departs from the filter that passband 50MHz suppresses to reach 50dBc outward; Power splitter can adopt integrated LC power splitter, small volume; The HMC601LP4 that wave detector can adopt ADI company performance splendid, its dynamic range scope can reach 75dB, and maximum operating frequency reaches 4GHz, and the large-signal response time is 50ns; Video detection amplifying circuit adopts 2 grades of amplifiers, is respectively used to adjustment video pulse signal baseline and arranges slope.
This circuit to improve signal frequency, bandwidth by this scheme is analyzed, by just system operating band being changed, expansive approach scope with changing filter through above embodiment.Be added with a level equaliser after amplifier and substantially increase signal flatness, wave detector itself has 65dB dynamic range, can increase 30dB after adding numerical-control attenuator, and whole assembly can reach 95dB dynamic range.Owing to have employed response speed wave detector faster, flora of filters time delay is lower, and actual measurement large-signal greatly improves system response time fall time within 80ns.
The utility model provides multiple-channel output to facilitate the expansion of function, can expand range of application.There is broadband, high dynamic range, low unevenness, consistency is good, interchannel isolation is high, adapt to the advantages such as pulse width range is wide, fall time is short, operating temperature range is wide, good stability.Show that the utility model is reliable and stable through test of many times, be easy to produce this, have good market prospects, be beneficial to batch production.
Claims (8)
1. the assembly of an integrated intermediate frequency amplification and video detection, it is characterized in that: it comprises processing circuitry of intermediate frequency and the video detection amplifying circuit of one or more series connection, described processing circuitry of intermediate frequency comprises the numerical-control attenuator, amplifier, equalizer, filter, power splitter and the first fixed attenuator that connect successively, the input of numerical-control attenuator is connected with IF input terminal, and the output of the first fixed attenuator is connected with medium frequency output end; Described video detection amplifying circuit comprises the second fixed attenuator, wave detector and the operational amplifier that connect successively, and the second fixed attenuator is connected with the second output of power splitter, and the output of operational amplifier is connected with video output terminals.
2. the assembly of a kind of integrated intermediate frequency amplification according to claim 1 and video detection, is characterized in that: described filter comprises LC filter and low pass filter.
3. the assembly of a kind of integrated intermediate frequency amplification according to claim 1 and video detection, it is characterized in that: described assembly also comprises control circuit, the output of control circuit is connected with the control end of numerical-control attenuator.
4. the assembly of a kind of integrated intermediate frequency amplification according to claim 3 and video detection, is characterized in that: described control circuit carries out coordinated signals to the numerical-control attenuator in multichannel processing circuitry of intermediate frequency.
5. the assembly of a kind of integrated intermediate frequency amplification according to claim 3 and video detection, it is characterized in that: described control circuit also comprises one or more pi type filter, every road output of control circuit is all connected with pi type filter and carries out filtering process.
6. the assembly of a kind of integrated intermediate frequency amplification according to claim 3 and video detection, is characterized in that: described control circuit comprises NL27WZ04DTT1G chip.
7. the assembly of a kind of integrated intermediate frequency amplification according to claim 1 and video detection, it is characterized in that: described assembly also comprises power supply processing circuit, described power supply processing circuit comprises linear voltage regulator.
8. the assembly of a kind of integrated intermediate frequency amplification according to claim 7 and video detection, is characterized in that: described linear voltage regulator comprises LT1963 pressurizer and TPS79333 pressurizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520562669.XU CN204906592U (en) | 2015-07-30 | 2015-07-30 | Subassembly of integrated intermediate -frequency amplification and video detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520562669.XU CN204906592U (en) | 2015-07-30 | 2015-07-30 | Subassembly of integrated intermediate -frequency amplification and video detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906592U true CN204906592U (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520562669.XU Expired - Fee Related CN204906592U (en) | 2015-07-30 | 2015-07-30 | Subassembly of integrated intermediate -frequency amplification and video detection |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114760393A (en) * | 2022-06-13 | 2022-07-15 | 成都富元辰科技有限公司 | Radio frequency link applied to four-channel single-bit frequency measurement |
-
2015
- 2015-07-30 CN CN201520562669.XU patent/CN204906592U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114760393A (en) * | 2022-06-13 | 2022-07-15 | 成都富元辰科技有限公司 | Radio frequency link applied to four-channel single-bit frequency measurement |
| CN114760393B (en) * | 2022-06-13 | 2022-10-25 | 成都富元辰科技有限公司 | Radio frequency link applied to four-channel single-bit frequency measurement |
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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 |
Granted publication date: 20151223 Termination date: 20180730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |