CN203275647U - Multichannel signal amplitude phase difference measuring system - Google Patents
Multichannel signal amplitude phase difference measuring system Download PDFInfo
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- CN203275647U CN203275647U CN 201320347919 CN201320347919U CN203275647U CN 203275647 U CN203275647 U CN 203275647U CN 201320347919 CN201320347919 CN 201320347919 CN 201320347919 U CN201320347919 U CN 201320347919U CN 203275647 U CN203275647 U CN 203275647U
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Abstract
The utility model provides a multichannel signal amplitude phase difference measuring system comprising a channel signal reception conditioning circuit, a multichannel high speed A/D acquisition circuit, a FPGA chip, a USB interface chip and a computer connected in sequence; and the channel signal reception conditioning circuit employs a transformer to couple the channel signals. The measuring system can measure amplitude and phase differences between a plurality of channels, employs the transformer to couple same-frequency sine carrier waves emitted by the plurality of channels, and sends the sine carrier waves to the multichannel high speed A/D acquisition circuit; when the sine carrier waves satisfy the work frequency of the system, digital downconversion processing is carried out to the collected digital signals through the FPGA chip, and the processed digital signals are sent to the computer through the USB interface chip for further digital signal processing; and relative amplitude and phase differences between each channel under same-frequency sine carrier waves are obtained through a spectrum estimation digital signal processing method, thereby obtaining characteristics between different channels.
Description
Technical field
The utility model relates to the poor measuring system of a kind of multi channel signals amplitude-phase.
Background technology
In recent years, due to the development of hyperchannel phased-array technique, the amplitude-phase characteristic between each passage under same frequency of operation becomes more and more important.For multi-channel system, amplitude-phase consistance between each passage directly affects the performance index of system, particularly in phased array system, the phase propetry between each passage is not mated and will be caused wave beam effectively to synthesize, and will badly influence the normal operation of system.
The utility model content
The utility model is for the problems referred to above, provide a kind of multi channel signals amplitude-phase poor measuring system, this system can detect the amplitude-phase characteristic of multichannel radar system transmission channel, calculate amplitude and phase differential between each passage, can assess the validity of Multichannel radar system and for channel amplitude and phase compensation provide foundation, ensure that multi-channel system can work for the measuring and calculating of channel characteristic.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The poor measuring system of a kind of multi channel signals amplitude-phase comprises the channel signal receiving conditioning circuit, multi-channel high-speed A/D Acquisition Circuit, fpga chip, USB interface chip, the computing machine that connect successively; The channel signal receiving conditioning circuit adopts transformer coupled channel signal.
Described multi-channel high-speed A/D Acquisition Circuit is connected with fpga chip by the LVDS interface.
Described USB interface chip is connected with computing machine by the usb data line.
Compared with prior art, the utility model can detect the phase amplitude difference of eight paths simultaneously, and any two passages all can use separately; The utility model is installed on the output terminal with frequency carrier signal passage, and it can demonstrate phase differential and the amplitude difference of each passage output.Thereby amplitude characteristic and phase propetry that can the Real Time Monitoring passage.
Description of drawings
Fig. 1 is rough schematic of the present utility model.
Fig. 2 is the coupled circuit block diagram of transformer in the utility model.
Fig. 3 is the clock circuit schematic diagram of multi-channel high-speed A/D Acquisition Circuit in the utility model.
Fig. 4 is the schematic diagram of multi-channel high-speed A/D Acquisition Circuit in the utility model.
Fig. 5 is the Digital Down Convert top layer theory diagram of fpga chip in the utility model.
Fig. 6 is the part top layer theory diagram of USB interface chip in the utility model.
Embodiment
Below in conjunction with embodiment shown in the drawings, the utility model is described further.
The utility model comprises channel signal receiving conditioning circuit, multi-channel high-speed A/D Acquisition Circuit, fpga chip, USB interface chip, the computing machine that connects successively; The channel signal receiving conditioning circuit adopts transformer coupled channel signal; Multi-channel high-speed A/D Acquisition Circuit is connected with fpga chip by the LVDS interface, and multi-channel high-speed A/D Acquisition Circuit mainly comprises multi-channel high-speed A/D device and peripheral circuit; Fpga chip comprises Digital Down Converter Module and peripheral circuit, completes the data such as conversion, mixing, extraction, filtering of the serial data of multi-channel high-speed A/D Acquisition Circuit output in fpga chip inside and processes; The USB interface chip is connected with computing machine by the usb data line; Computer control software is completed the extraction of channel phases and demonstration, and software is take a certain passage as reference, demonstrates rest channels on the interface with respect to phase differential and the amplitude difference of reference channel and can demonstrate in real time time domain waveform figure and the spectrogram of each passage.
Claims (3)
1. the measuring system that the multi channel signals amplitude-phase is poor, is characterized in that: comprise connect successively logical
Road signal receiving conditioning circuit, multi-channel high-speed A/D Acquisition Circuit, fpga chip, USB interface chip, computing machine; The channel signal receiving conditioning circuit adopts transformer coupled channel signal.
2. the poor measuring system of a kind of multi channel signals amplitude-phase according to claim 1, its feature exists
In: described multi-channel high-speed A/D Acquisition Circuit is connected with fpga chip by the LVDS interface.
3. the poor measuring system of a kind of multi channel signals amplitude-phase according to claim 1, its feature exists
In: described USB interface chip is connected with computing machine by the usb data line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320347919 CN203275647U (en) | 2013-06-17 | 2013-06-17 | Multichannel signal amplitude phase difference measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320347919 CN203275647U (en) | 2013-06-17 | 2013-06-17 | Multichannel signal amplitude phase difference measuring system |
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| CN203275647U true CN203275647U (en) | 2013-11-06 |
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| CN 201320347919 Expired - Fee Related CN203275647U (en) | 2013-06-17 | 2013-06-17 | Multichannel signal amplitude phase difference measuring system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569589A (en) * | 2014-12-24 | 2015-04-29 | 北京无线电测量研究所 | Device and method for automatically testing Ku waveband phase difference of multi-branch power amplifier |
| CN105259544A (en) * | 2015-10-31 | 2016-01-20 | 零八一电子集团有限公司 | Amplitude and phase test system of active phased-array radar T/R assemblies |
| CN104090163B (en) * | 2014-07-23 | 2016-09-21 | 中国电子科技集团公司第五十四研究所 | A kind of high stability, high-precision phase amplitude detection device |
| CN106302302A (en) * | 2015-05-20 | 2017-01-04 | 北京理工大学 | The width phase on-line monitoring of a kind of multi channel signals transmitting terminal and real-time compensation method |
| CN106707023A (en) * | 2017-03-10 | 2017-05-24 | 四川鸿创电子科技有限公司 | Method of detecting amplitude difference and phase difference of multichannel AD signals based on FPGA (Field Programmable Gate Array) |
| CN108008188A (en) * | 2017-12-06 | 2018-05-08 | 成都玖锦科技有限公司 | A kind of inter-channel phase difference, the measuring method of amplitude difference |
| CN109752705A (en) * | 2017-11-03 | 2019-05-14 | 中电科海洋信息技术研究院有限公司 | High-frequency water acoustic array performance parameter measurement method and system, equipment and storage medium |
| CN109870622A (en) * | 2019-03-14 | 2019-06-11 | 中国电子科技集团公司第二十九研究所 | The measurement method of efficient process array channel radio frequency delay inequality |
| CN110380216A (en) * | 2019-07-30 | 2019-10-25 | 西安天和防务技术股份有限公司 | Phase configuration method, apparatus, equipment and storage medium in phased-array radar |
-
2013
- 2013-06-17 CN CN 201320347919 patent/CN203275647U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104090163B (en) * | 2014-07-23 | 2016-09-21 | 中国电子科技集团公司第五十四研究所 | A kind of high stability, high-precision phase amplitude detection device |
| CN104569589A (en) * | 2014-12-24 | 2015-04-29 | 北京无线电测量研究所 | Device and method for automatically testing Ku waveband phase difference of multi-branch power amplifier |
| CN104569589B (en) * | 2014-12-24 | 2017-03-15 | 北京无线电测量研究所 | A kind of Ku wave bands multiple branch circuit power amplifier phase contrast automatic test device and method |
| CN106302302B (en) * | 2015-05-20 | 2017-12-08 | 北京理工大学 | A kind of width of multi channel signals transmitting terminal is mutually monitored on-line and real-time compensation method |
| CN106302302A (en) * | 2015-05-20 | 2017-01-04 | 北京理工大学 | The width phase on-line monitoring of a kind of multi channel signals transmitting terminal and real-time compensation method |
| CN105259544B (en) * | 2015-10-31 | 2017-09-15 | 零八一电子集团有限公司 | Connectors for Active Phased Array Radar T/R component width phase test systems |
| CN105259544A (en) * | 2015-10-31 | 2016-01-20 | 零八一电子集团有限公司 | Amplitude and phase test system of active phased-array radar T/R assemblies |
| CN106707023A (en) * | 2017-03-10 | 2017-05-24 | 四川鸿创电子科技有限公司 | Method of detecting amplitude difference and phase difference of multichannel AD signals based on FPGA (Field Programmable Gate Array) |
| CN106707023B (en) * | 2017-03-10 | 2019-06-14 | 四川鸿创电子科技有限公司 | A kind of amplitude difference, the phase difference detection method of the multichannel AD signal based on FPGA |
| CN109752705A (en) * | 2017-11-03 | 2019-05-14 | 中电科海洋信息技术研究院有限公司 | High-frequency water acoustic array performance parameter measurement method and system, equipment and storage medium |
| CN108008188A (en) * | 2017-12-06 | 2018-05-08 | 成都玖锦科技有限公司 | A kind of inter-channel phase difference, the measuring method of amplitude difference |
| CN109870622A (en) * | 2019-03-14 | 2019-06-11 | 中国电子科技集团公司第二十九研究所 | The measurement method of efficient process array channel radio frequency delay inequality |
| CN110380216A (en) * | 2019-07-30 | 2019-10-25 | 西安天和防务技术股份有限公司 | Phase configuration method, apparatus, equipment and storage medium in phased-array radar |
| CN110380216B (en) * | 2019-07-30 | 2021-09-03 | 西安天和防务技术股份有限公司 | Phase configuration method, device, equipment and storage medium in phased array radar |
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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: 20131106 Termination date: 20140617 |
|
| EXPY | Termination of patent right or utility model |