CN204044354U - High receiving sensitivity broadband receiver - Google Patents
High receiving sensitivity broadband receiver Download PDFInfo
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- CN204044354U CN204044354U CN201420328509.4U CN201420328509U CN204044354U CN 204044354 U CN204044354 U CN 204044354U CN 201420328509 U CN201420328509 U CN 201420328509U CN 204044354 U CN204044354 U CN 204044354U
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- broadband receiver
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Abstract
The utility model discloses a kind of high receiving sensitivity broadband receiver, comprise mode selecting unit, frequency selecting and filter unit, first order mixing unit, second level mixing unit and bandwidth selection unit, the input end of radio-frequency signal source input pattern selection unit, the output terminal of mode selecting unit is connected with the input end of second level mixing unit with bandwidth selection unit by frequency selecting and filter unit, first order mixing unit successively, and the output terminal of bandwidth selection unit exports intermediate-freuqncy signal.The utility model adopts two-stage to surpass interpolation structure, can receive the radiofrequency signal of 20 ~ 1800MHz; Frequency selecting and filter unit can carry out filtering by radio frequency signal, makes its frequency spectrum clean, the interference brought when contributing to reducing follow-up mixing; First order mixing unit exports 1320MHz intermediate-freuqncy signal, through 25MHz band-pass filter, can effectively filtering mixing time the high-order that brings spuious and local oscillator leakage; Receiving sensitivity is high, and dynamic range is large, and tuning scanning is quick, and antijamming capability is strong, can ensure the quality of reception of feeble signal.
Description
Technical field
The utility model relates to wideband communications receiver field, particularly relates to a kind of high receiving sensitivity broadband receiver.
Background technology
As the important component part of radar system, broadband receiver needs to process the broadband rf signal received efficiently, fast and accurately.Along with the develop rapidly of electronic information technology, have the front equipment end of receiver as obtaining information of wide input signal bandwidth, demand is more and more stronger.And traditional short-wave receiver can only receive the signal of narrow band frequency, process broadband signal cannot be received.Secondly, traditional short-wave receiver dynamic range is large not, and receiver sensitivity can be caused to reduce, and antijamming capability is weak, cannot ensure the quality of reception of feeble signal.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of receiving sensitivity is high, dynamic range is large, tuning scanning broadband receiver fast.
The purpose of this utility model is achieved through the following technical solutions: high receiving sensitivity broadband receiver, it comprises mode selecting unit, frequency selecting and filter unit, first order mixing unit, second level mixing unit and bandwidth selection unit, the input end of radio-frequency signal source input pattern selection unit, the output terminal of mode selecting unit is connected with the input end of second level mixing unit with bandwidth selection unit by frequency selecting and filter unit, first order mixing unit successively, and the output terminal of bandwidth selection unit exports intermediate-freuqncy signal.
Described mode selecting unit comprises the first amplifier PA1, direct circuit and the first numerical-control attenuator parallel with one another, and the two ends of the first amplifier PA1, direct circuit and the first numerical-control attenuator are connected with selector switch respectively.
Described frequency selecting and filter unit comprises many groups preselection filter parallel with one another, and the two ends of each preselection filter are connected with selector switch respectively.
Described preselection filter is LC wave filter.
Described bandwidth selection unit comprises the different bandpass filter of many groups bandwidth of operation parallel with one another, and the two ends of each bandpass filter are connected with selector switch respectively.
The first bandpass filter BPF1 is provided with between the output terminal of described frequency selecting and filter unit and the input end of first order mixing unit.
The second bandpass filter BPF2, the second amplifier PA2, the 3rd bandpass filter BPF3, the 3rd amplifier PA3 and the second numerical-control attenuator is disposed with between the output terminal of described first order mixing unit and the input end of second level mixing unit.
The 4th bandpass filter BPF4 and the 4th amplifier PA4 is disposed with between the output terminal of described second level mixing unit and the input end of bandwidth selection unit.
The output terminal of described bandwidth selection unit is connected with the 5th amplifier PA5 and the 5th bandpass filter BPF5 in turn.
The beneficial effects of the utility model are:
1) this receiver adopts two-stage to surpass interpolation structure, can receive the radiofrequency signal of 20 ~ 1800MHz;
2) frequency selecting and filter unit can carry out filtering by radio frequency signal, makes its frequency spectrum clean, the interference brought when contributing to reducing follow-up mixing;
3) first order mixing unit exports 1320MHz intermediate-freuqncy signal, through 25MHz band-pass filter, can effectively filtering mixing time the high-order that brings spuious and local oscillator leakage;
4) this receiver receiving sensitivity is high, and dynamic range is large, and tuning scanning is quick, and antijamming capability is strong, can ensure the quality of reception of feeble signal.
Accompanying drawing explanation
Fig. 1 is the utility model structural schematic block diagram.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, high receiving sensitivity broadband receiver, it comprises mode selecting unit, frequency selecting and filter unit, first order mixing unit, second level mixing unit and bandwidth selection unit, the input end of 20 ~ 1800MHz radio-frequency signal source input pattern selection unit, the output terminal of mode selecting unit is connected with the input end of second level mixing unit with bandwidth selection unit by frequency selecting and filter unit, first order mixing unit successively, and the output terminal of bandwidth selection unit exports intermediate-freuqncy signal.
Described mode selecting unit comprises the first amplifier PA1(TQP3M9008 parallel with one another), direct circuit and the first numerical-control attenuator, the two ends of the first amplifier PA1, direct circuit and the first numerical-control attenuator are connected with selector switch respectively.Select mode of operation by selector switch: low noise mode is selected through the first amplifier PA1, normal mode is selected straight-through, and low distortion pattern is then selected through the first numerical-control attenuator.
Enter frequency selecting and filter unit by the signal after model selection, frequency selecting and filter unit comprises 11 groups of preselection filters parallel with one another, and the two ends of each preselection filter are connected with selector switch respectively.Described preselection filter is LC wave filter.
In first order mixing unit, mini company SYM-30DHW selected by frequency mixer, and input radio frequency signal is 20 ~ 1000MHz, and local oscillation signal respective frequencies is 1350 ~ 2330MHz, and output intermediate-freuqncy signal is 1320MHz.
Second level mixing unit adopts 1250MHz point source frequently, and the signal after frequency conversion is the intermediate-freuqncy signal of 70MHz.
Described bandwidth selection unit comprises the different bandpass filter of many groups bandwidth of operation parallel with one another, and the two ends of each bandpass filter are connected with selector switch respectively.
The first bandpass filter BPF1 is provided with between the output terminal of described frequency selecting and filter unit and the input end of first order mixing unit.
The second bandpass filter BPF2, the second amplifier PA2, the 3rd bandpass filter BPF3, the 3rd amplifier PA3 and the second numerical-control attenuator is disposed with between the output terminal of described first order mixing unit and the input end of second level mixing unit.
The 4th bandpass filter BPF4 and the 4th amplifier PA4 is disposed with between the output terminal of described second level mixing unit and the input end of bandwidth selection unit.
The output terminal of described bandwidth selection unit is connected with the 5th amplifier PA5(AH31 in turn) and the 5th bandpass filter BPF5.
The above is only preferred implementation of the present utility model, be to be understood that the utility model is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from spirit and scope of the present utility model, then all should in the protection domain of the utility model claims.
Claims (9)
1. high receiving sensitivity broadband receiver, it is characterized in that: it comprises mode selecting unit, frequency selecting and filter unit, first order mixing unit, second level mixing unit and bandwidth selection unit, the input end of radio-frequency signal source input pattern selection unit, the output terminal of mode selecting unit is connected with the input end of second level mixing unit with bandwidth selection unit by frequency selecting and filter unit, first order mixing unit successively, and the output terminal of bandwidth selection unit exports intermediate-freuqncy signal.
2. high receiving sensitivity broadband receiver according to claim 1, it is characterized in that: described mode selecting unit comprises the first amplifier PA1, direct circuit and the first numerical-control attenuator parallel with one another, and the two ends of the first amplifier PA1, direct circuit and the first numerical-control attenuator are connected with selector switch respectively.
3. high receiving sensitivity broadband receiver according to claim 1, is characterized in that: described frequency selecting and filter unit comprises many groups preselection filter parallel with one another, and the two ends of each preselection filter are connected with selector switch respectively.
4. high receiving sensitivity broadband receiver according to claim 3, is characterized in that: described preselection filter is LC wave filter.
5. high receiving sensitivity broadband receiver according to claim 1, is characterized in that: described bandwidth selection unit comprises the different bandpass filter of many groups bandwidth of operation parallel with one another, and the two ends of each bandpass filter are connected with selector switch respectively.
6. high receiving sensitivity broadband receiver according to claim 1, is characterized in that: be provided with the first bandpass filter BPF1 between the output terminal of described frequency selecting and filter unit and the input end of first order mixing unit.
7. high receiving sensitivity broadband receiver according to claim 1, is characterized in that: be disposed with the second bandpass filter BPF2, the second amplifier PA2, the 3rd bandpass filter BPF3, the 3rd amplifier PA3 and the second numerical-control attenuator between the output terminal of described first order mixing unit and the input end of second level mixing unit.
8. high receiving sensitivity broadband receiver according to claim 1, is characterized in that: be disposed with the 4th bandpass filter BPF4 and the 4th amplifier PA4 between the output terminal of described second level mixing unit and the input end of bandwidth selection unit.
9. high receiving sensitivity broadband receiver according to claim 1, is characterized in that: the output terminal of described bandwidth selection unit is connected with the 5th amplifier PA5 and the 5th bandpass filter BPF5 in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420328509.4U CN204044354U (en) | 2014-06-19 | 2014-06-19 | High receiving sensitivity broadband receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420328509.4U CN204044354U (en) | 2014-06-19 | 2014-06-19 | High receiving sensitivity broadband receiver |
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| Publication Number | Publication Date |
|---|---|
| CN204044354U true CN204044354U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420328509.4U Expired - Fee Related CN204044354U (en) | 2014-06-19 | 2014-06-19 | High receiving sensitivity broadband receiver |
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| CN (1) | CN204044354U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817177A (en) * | 2015-11-30 | 2017-06-09 | 华大半导体有限公司 | A kind of inexpensive sensibility testing arrangement |
| CN107888215A (en) * | 2017-12-25 | 2018-04-06 | 华通信安(北京)科技发展有限公司 | A kind of broadband receiver RF front-end circuit |
| CN108111184A (en) * | 2016-11-23 | 2018-06-01 | 北京遥感设备研究所 | A kind of ultra wide band compact radio frequency component |
| CN108303587A (en) * | 2017-01-12 | 2018-07-20 | 北京普源精电科技有限公司 | Improve the spectrum analyzer that bottom is made an uproar |
| CN109067376A (en) * | 2018-08-15 | 2018-12-21 | 中国电子科技集团公司第五十四研究所 | A kind of ultrashort wave preselection filter chip based on sip technique |
| CN111162809A (en) * | 2019-12-13 | 2020-05-15 | 西安易朴通讯技术有限公司 | Wireless receiver and wireless device |
| CN112737615A (en) * | 2020-12-28 | 2021-04-30 | 成都美数科技有限公司 | Short wave direct acquisition receiver with ultrahigh intercept point |
| CN113872617A (en) * | 2021-05-18 | 2021-12-31 | 成都辰天信息科技有限公司 | Broadband signal receiving circuit |
-
2014
- 2014-06-19 CN CN201420328509.4U patent/CN204044354U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817177A (en) * | 2015-11-30 | 2017-06-09 | 华大半导体有限公司 | A kind of inexpensive sensibility testing arrangement |
| CN108111184A (en) * | 2016-11-23 | 2018-06-01 | 北京遥感设备研究所 | A kind of ultra wide band compact radio frequency component |
| CN108303587A (en) * | 2017-01-12 | 2018-07-20 | 北京普源精电科技有限公司 | Improve the spectrum analyzer that bottom is made an uproar |
| CN107888215A (en) * | 2017-12-25 | 2018-04-06 | 华通信安(北京)科技发展有限公司 | A kind of broadband receiver RF front-end circuit |
| CN109067376A (en) * | 2018-08-15 | 2018-12-21 | 中国电子科技集团公司第五十四研究所 | A kind of ultrashort wave preselection filter chip based on sip technique |
| CN111162809A (en) * | 2019-12-13 | 2020-05-15 | 西安易朴通讯技术有限公司 | Wireless receiver and wireless device |
| CN111162809B (en) * | 2019-12-13 | 2022-04-15 | 西安易朴通讯技术有限公司 | Wireless receiver and wireless device |
| CN112737615A (en) * | 2020-12-28 | 2021-04-30 | 成都美数科技有限公司 | Short wave direct acquisition receiver with ultrahigh intercept point |
| CN112737615B (en) * | 2020-12-28 | 2022-04-01 | 成都美数科技有限公司 | Short wave direct acquisition receiver with ultrahigh intercept point |
| CN113872617A (en) * | 2021-05-18 | 2021-12-31 | 成都辰天信息科技有限公司 | Broadband signal receiving circuit |
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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: 20141224 Termination date: 20190619 |
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| CF01 | Termination of patent right due to non-payment of annual fee |