CN203368451U - Broadband receiver - Google Patents
Broadband receiver Download PDFInfo
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- CN203368451U CN203368451U CN 201320458021 CN201320458021U CN203368451U CN 203368451 U CN203368451 U CN 203368451U CN 201320458021 CN201320458021 CN 201320458021 CN 201320458021 U CN201320458021 U CN 201320458021U CN 203368451 U CN203368451 U CN 203368451U
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- broadband receiver
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Abstract
The utility model discloses a broadband receiver. The broadband receiver comprises a first stage filtering assembly, a second stage filtering assembly, mixers, an intermediate frequency digital processor and narrowband frequency hopping sources, broadband radiofrequency signals goes through the first stage filtering assembly and the second grade filtering assembly in sequence, then the signals after frequency division are inputted to the mixers, the narrowband frequency hopping sources are connected with the mixers and different frequencies are provided, and the outputted signals from the mixers are finally inputted to the intermediate frequency digital processor to be processed and then outputted. The broadband receiver employs frequency band filtering assemblies matched with the narrowband frequency hopping sources, and signals are simultaneously processed by a plurality of narrowband channels. The technical solution can significantly shorten the signal capturing time and effectively reduces active jamming of the radiofrequency signals.
Description
Technical field
The utility model relates to the radiofrequency signal process field, particularly relates to a kind of broadband receiver.
Background technology
As the important component part of radar system, broadband receiver needs efficiently, processes fast, accurately the broadband rf signal received.Traditional broadband receiver adopts the mode of broadband frequency hopping source more, and the covering wide band signal is realized the signal processing.The consequence of this method is that frequency hopping synthesizer is excessive because of swept frequency range, causes the lock-on signal overlong time, do not meet electronic countermeasures efficiently, basic demand efficiently.In order to solve this difficult problem, the invention provides a kind of new broadband receiver processing mode.
What traditional broadband receiver adopted is the mode of frequency-selecting assembly collocation broadband frequency hopping source.This processing mode is wide because of the bandwidth of processing, and causes the signal capture overlong time, and processing latency is excessively of a specified duration, affects overall performance; Simultaneously, the switch in the frequency-selecting assembly is the radio frequency grammed switch, during its work, needs control signal and power supply, has caused interference source to increase, harass the shortcoming of increase.
The utility model content
The purpose of this utility model is in order to solve above-mentioned existing issue, and a kind of broadband receiver is provided, and adopts the mode of passive frequency range filtering collocation arrowband frequency hopping synthesizer, greatly reduces the signal capture time; While greatly reducing radio frequency processing simultaneously, the interference of power supply to signal.
The utility model adopts following technical scheme: a kind of broadband receiver is characterized by and comprises first order filtering unit, second level filtering unit, frequency mixer, IF digital process device and arrowband frequency hopping synthesizer; Described broadband rf signal is input to frequency mixer after second level filtering unit filtering frequency division successively after first order filtering unit, the arrowband frequency hopping synthesizer is connected with frequency mixer and different frequency is provided, and the signal of frequency mixer output finally is input in the IF digital process device to be processed and export.
In technique scheme, described first order filtering unit comprises the first power distributing unit and the first filter, the second filter, and power distributing unit will be respectively by the first filter and the output of the second filter filtering after described broadband rf signal frequency division.
In technique scheme, described second level filtering unit comprises the second power distributing unit and is attached thereto the 3rd filter, the 4th filter connect, the 3rd power distributing unit and the 5th filter, the 6th filter that are attached thereto, described the second power distributing unit is connected with the first filter, and the 3rd power distributing unit is connected with the second filter.
In technique scheme, described the first filter, the second filter, the 3rd filter, the 4th filter, the 5th filter, the 6th filter are passive frequency band filter.
Advantage of the present utility model:
One, traditional active switch filter assembly is replaced by passive frequency range filtering unit.The mode of traditional grammed switch collocation filter, need to power to switch, and control signal is provided, and can strengthen the difficulty of placement-and-routing, improves power consumption, and increase current interference.And the passive filtering assembly is comprised of power division and narrow band filter, do not need power supply, do not need to provide control signal yet, effectively avoided the drawback of conventional method.
Two, the broadband frequency hopping source mixing is replaced by arrowband frequency hopping synthesizer mixing.Broadband frequency hopping source is too wide because of its swept frequency range, cause the frequency sweep overlong time, and the swept frequency range of arrowband frequency hopping synthesizer is the part even 1/tens of broadband frequency hopping source, can significantly reduce the frequency sweep time, meet broadband receiver efficiently, requirement efficiently, improve the performance of receiver.
The accompanying drawing explanation
The utility model will illustrate by embodiment and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is system architecture diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the utility model is a kind of new broadband receiver, has adopted the mode of frequency range filtering unit collocation arrowband frequency hopping synthesizer; A plurality of narrow channels are processed signal simultaneously.This scheme can shorten the signal capture time greatly, has effectively reduced the active interference of radiofrequency signal simultaneously.
The broadband rf signal of antenna reception of the present utility model, through two-stage frequency range filtering unit, the narrow radio frequency signal that is divided into four road different frequencies is processed.
Wherein, the frequency range filtering unit consists of power divider collocation filter, first order frequency range filtering unit comprises the first power distributing unit and the first filter, the second filter, and broadband rf signal is divided into frequency range one and frequency range two by the first filter and the second filter by broadband signal after entering the first power distributing unit.
The structure of second level frequency range filtering unit is the same with the principle that first order frequency range filtering unit adopts, second level frequency range filtering unit comprises the second power distributing unit and is attached thereto the 3rd filter, the 4th filter connect, the 3rd power distributing unit and the 5th filter, the 6th filter that are attached thereto.The second power distributing unit is accepted frequency range one signal of the first filter output, and the 3rd power distributing unit is accepted the frequency range binary signal of the second filter output; Simultaneously the 3rd filter, the 4th filter general, the 5th filter, the 6th filter are divided into frequency range one and frequency range two signal of four road different frequencies, the four road signals narrow band signal of the narrow band signal ，Gai tetra-road different frequency ranges of the last output of input mixer four road different frequency ranges respectively can comprise broadband rf signal fully; The signal of four road different frequencies carries out mixing with four arrowband frequency hopping synthesizers of its respective frequencies respectively, draws intermediate-freuqncy signal; After FPGA carries out digital processing, output TTL signal.
Filter above-mentioned in the utility model all adopts the passive filtering device, does not need like this power supply, does not also need to provide control signal, has effectively avoided the drawback of conventional method.Broadband frequency hopping source mixing is simultaneously replaced by arrowband frequency hopping synthesizer mixing.Can significantly reduce the frequency sweep time, meet broadband receiver efficiently, requirement efficiently, improve the performance of receiver.
Disclosed all features in this specification, except mutually exclusive feature, all can combine by any way.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (4)
1. a broadband receiver, is characterized by and comprise first order filtering unit, second level filtering unit, frequency mixer, IF digital process device and arrowband frequency hopping synthesizer; Described broadband rf signal is input to frequency mixer after second level filtering unit filtering frequency division successively after first order filtering unit, the arrowband frequency hopping synthesizer is connected with frequency mixer and different frequency is provided, and the signal of frequency mixer output finally is input in the IF digital process device to be processed and export.
2. a kind of broadband receiver according to claim 1, it is characterized by described first order filtering unit and comprise the first power distributing unit and the first filter, the second filter, power distributing unit will be respectively by the first filter and the output of the second filter filtering after described broadband rf signal frequency division.
3. a kind of broadband receiver according to claim 1 and 2, it is characterized by described second level filtering unit comprises the second power distributing unit and is attached thereto the 3rd filter, the 4th filter connect, the 3rd power distributing unit and the 5th filter, the 6th filter that are attached thereto, described the second power distributing unit is connected with the first filter, and the 3rd power distributing unit is connected with the second filter.
4. a kind of broadband receiver according to claim 3, it is characterized by described the first filter, the second filter, the 3rd filter, the 4th filter, the 5th filter, the 6th filter is passive frequency band filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320458021 CN203368451U (en) | 2013-07-30 | 2013-07-30 | Broadband receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320458021 CN203368451U (en) | 2013-07-30 | 2013-07-30 | Broadband receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368451U true CN203368451U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320458021 Expired - Lifetime CN203368451U (en) | 2013-07-30 | 2013-07-30 | Broadband receiver |
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| CN (1) | CN203368451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533474A (en) * | 2016-11-22 | 2017-03-22 | 四川九洲电器集团有限责任公司 | Receiver and signal processing method |
-
2013
- 2013-07-30 CN CN 201320458021 patent/CN203368451U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533474A (en) * | 2016-11-22 | 2017-03-22 | 四川九洲电器集团有限责任公司 | Receiver and signal processing method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |
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| CX01 | Expiry of patent term |