CN112671460A - Microwave photon broadband spectrum analysis device - Google Patents
Microwave photon broadband spectrum analysis device Download PDFInfo
- Publication number
- CN112671460A CN112671460A CN202011469287.4A CN202011469287A CN112671460A CN 112671460 A CN112671460 A CN 112671460A CN 202011469287 A CN202011469287 A CN 202011469287A CN 112671460 A CN112671460 A CN 112671460A
- Authority
- CN
- China
- Prior art keywords
- microwave
- module
- optical
- electric
- spectrum analysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010183 spectrum analysis Methods 0.000 title claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 47
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 230000009022 nonlinear effect Effects 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000001228 spectrum Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention relates to a microwave photon broadband spectrum analysis device, which combines microwave photons with the traditional electronic measurement technology and comprises a radio frequency gain module, an electric/optical modulation module, a microwave photon channelizing module, an optical/electric conversion module, a plurality of high-speed ADCs and a data processing module. By adopting the microwave photon technology, the microwave millimeter wave signal is received with high frequency, large broadband and low loss; the problem of small dynamic range of microwave photons is solved by adopting the radio frequency gain control module; multi-channel optical signals after microwave photon channelization are converted into electric signals, ADC sampling of an electric domain is carried out, and the problems of low optical sampling quantity and high difficulty are solved; the nonlinear compensation is carried out on the microwave photons in the digital domain, and the problem of the nonlinear effect of the microwave photons is solved. Compared with the traditional technology, the invention has the advantages of higher receiving frequency, larger receiving bandwidth, high receiving sensitivity, high measuring accuracy, capability of realizing more frequency spectrum test analysis functions and strong environmental adaptability.
Description
Technical Field
The invention belongs to the technical field of broadband spectrum analysis, and particularly relates to a microwave photon broadband spectrum analysis device.
Background
With the rapid development of technologies such as wireless communication, navigation, automatic automobile driving and the like, the signal frequency band is continuously improved, the bandwidth is continuously increased, a superheterodyne receiving mode is generally adopted by a spectrum analysis instrument, and radio frequency signals of a high frequency band are reduced to intermediate frequency signals of a lower frequency through 2-3 levels of frequency mixing for acquisition processing so as to reduce the difficulty of acquisition processing; for broadband signals, a broadband filter is adopted for out-of-band suppression, and the in-band amplitude-frequency response is improved in an automatic calibration and flatness compensation mode.
Conventional superheterodyne mixing-based spectrum analysis instruments encounter bottlenecks in frequency and bandwidth: the high-frequency-band passive devices such as millimeter wave waveguides, connectors and the like have high processing precision requirement, high processing difficulty, high propagation loss, high design difficulty of active devices such as amplifiers and the like, low high-frequency-band amplification efficiency and poor receiving sensitivity; the out-of-band interference and spurious emission are difficult to suppress in broadband receiving, the amplitude-frequency response is poor, and the measurement accuracy is influenced.
The microwave photon technology is used as a new technology of spectrum analysis due to the advantages of high frequency, large bandwidth, low loss and the like, adopts an optical path structure to replace a microwave receiving channel, realizes the frequency conversion and digitization of radio frequency signals by using optical mixing, optical filtering and optical analog-to-digital conversion (optical ADC), and then carries out spectrum analysis by processing electrical signals. The optical filter and the optical ADC of the microwave photon technology have the advantages of high development difficulty, high precision requirement of optical devices, high processing difficulty, poor environmental adaptability, low quantization digit of the optical ADC, limited spectral analysis precision, small dynamic range of microwave photons, serious nonlinear effect and influence on the measurement accuracy of spectral analysis.
Disclosure of Invention
In order to solve the problems, the invention provides a microwave photon broadband spectrum analysis device which is reasonable in design, overcomes the defects of the prior art and has a good effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a microwave photon broadband spectrum analysis device comprises a radio frequency gain module, an electric/optical modulation module, a microwave photon channelizing module, an optical/electric conversion module, a plurality of high-speed ADCs and a data processing module.
Preferably, after a radio frequency signal with a frequency range of W is input, a received radio frequency signal is subjected to power adjustment through the radio frequency gain control module to be within an effective working range of the electric/optical modulation module and the microwave optical sub-channelization module, then the electric/optical modulation module modulates the electric analog signal into an optical signal with a bandwidth of W, the optical signal is processed through the microwave optical sub-channelization module to form optical signals of N channels with bandwidths of W/N and start-stop frequencies of 0 to W/N, the optical signal in each channel is converted into a multi-channel electric analog signal through optical/electrical conversion, then each channel is subjected to digital signal acquisition through the high-speed ADC to form a multi-channel digital signal, and finally the digital signal enters the data processing module to realize broadband spectrum analysis.
Preferably, the digital signal enters a data processing module, compensates for the nonlinear effect caused by the microwave photons, and performs decimation filtering and FFT transformation on the digital signal to realize broadband spectrum analysis.
Preferably, the sampling rate of the high-speed ADCs is greater than 2W/N.
The invention has the following beneficial technical effects:
the microwave photon and the traditional electronic measurement technology are combined, the advantages are complementary, the superheterodyne frequency mixing is replaced by the microwave photon technology, and the microwave millimeter wave signal is received with high frequency, large bandwidth and low loss; the problem of small dynamic range of microwave photons is solved by adopting the radio frequency gain control module; multi-channel optical signals after microwave photon channelization are converted into electric signals, ADC sampling of an electric domain is carried out, and the problems of low optical sampling quantity and high difficulty are solved; the nonlinear compensation is carried out on the microwave photons in the digital domain, and the problem of the nonlinear effect of the microwave photons is solved.
Drawings
FIG. 1 is a block diagram of a microwave photon broadband spectrum analyzer according to the present invention;
Detailed Description
To facilitate understanding and practice of the invention by those of ordinary skill in the art, embodiments of the invention are further described below with reference to the accompanying drawings and specific examples:
fig. 1 is a block diagram of a microwave photon width spectrum analyzer, which includes a radio frequency gain module, an electrical/optical modulation module, a microwave photon channelization module, an optical/electrical conversion module, a plurality of high-speed ADCs, and a data processing module.
After a radio frequency signal with a frequency range of W is input, firstly, the power of the received radio frequency signal is adjusted through a radio frequency gain control module to enable the received radio frequency signal to be in an effective working range of an electric/optical modulation module and a microwave optical sub-channelizing module, then, the electric/optical modulation module modulates an electric analog signal into an optical signal with a bandwidth of W, the optical signal is processed through the microwave optical sub-channelizing module to form N optical signals with a plurality of channels with bandwidths of W/N and start-stop frequencies of 0-W/N, the optical signal in each channel is converted into a multi-channel electric analog signal through optical/electric conversion, then, each channel carries out digital signal acquisition through a high-speed ADC with a sampling rate of more than 2W/N to form a multi-channel digital signal, and finally, the digital signal enters a data processing module to realize broadband spectrum analysis.
Specifically, the digital signal enters a data processing module, compensates for the nonlinear effect caused by the microwave photons, and performs decimation filtering and FFT conversion on the digital signal to realize broadband spectrum analysis.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (4)
1. A microwave photon broadband spectrum analysis device is characterized by comprising a radio frequency gain module, an electric/optical modulation module, a microwave photon channelizing module, an optical/electric conversion module, a plurality of high-speed ADCs and a data processing module.
2. The microwave photonic broadband spectrum analysis device of claim 1, wherein after the input of the RF signal with the frequency range W, the RF signal firstly passes through the RF gain control module, the received radio frequency signal is adjusted in power to be within the effective working range of the electric/optical modulation module and the microwave optical sub-channelization module, then the electric analog signal is modulated into an optical signal with the bandwidth of W by the electric/optical modulation module, the optical signal is processed by the microwave photon channelizing module, forming N optical signals of multiple channels with bandwidth of W/N and start-stop frequency of 0-W/N, converting the optical signals in each channel into multi-channel electric analog signals after optical/electric conversion, then, each channel uses a high-speed ADC to collect digital signals to form multi-channel digital signals, and finally, the digital signals enter a data processing module to realize broadband spectrum analysis.
3. The microwave photon broadband spectrum analysis device according to claim 1, wherein the digital signal enters the data processing module to compensate for the nonlinear effect caused by the microwave photons, and the digital signal is subjected to decimation filtering and FFT to realize broadband spectrum analysis.
4. A microwave photonic broadband spectrum analysis apparatus according to claim 1, wherein the sampling rates of the plurality of high speed ADCs are each greater than 2W/N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011469287.4A CN112671460A (en) | 2020-12-14 | 2020-12-14 | Microwave photon broadband spectrum analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011469287.4A CN112671460A (en) | 2020-12-14 | 2020-12-14 | Microwave photon broadband spectrum analysis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112671460A true CN112671460A (en) | 2021-04-16 |
Family
ID=75405809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011469287.4A Pending CN112671460A (en) | 2020-12-14 | 2020-12-14 | Microwave photon broadband spectrum analysis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112671460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117848495A (en) * | 2024-03-07 | 2024-04-09 | 深圳市朗石科学仪器有限公司 | Photon signal acquisition method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130259490A1 (en) * | 2012-03-29 | 2013-10-03 | Juniper Networks, Inc. | Processing data in a coherent optical communication system |
| CN103809346A (en) * | 2014-02-26 | 2014-05-21 | 上海交通大学 | Ultra high-speed optical analog-to-digital conversion device |
| CN104639246A (en) * | 2015-01-23 | 2015-05-20 | 北京邮电大学 | Microwave photonic link SFDR (Spurious Free Dynamic Range) enlarging method based on automatic light gain control |
| CN105372902A (en) * | 2015-11-16 | 2016-03-02 | 上海交通大学 | High speed reconstructible optical analog-to-digital conversion apparatus |
| CN110324092A (en) * | 2019-06-20 | 2019-10-11 | 天津师范大学 | The method for reducing PON system receiving end ADC sample rate and sampling bandwidth |
| US10630391B1 (en) * | 2017-11-07 | 2020-04-21 | Magiq Technologies, Inc. | RF processing system and method |
| CN111416663A (en) * | 2020-04-27 | 2020-07-14 | 中国电子科技集团公司第三十四研究所 | High-performance radio frequency optical transmission link structure |
-
2020
- 2020-12-14 CN CN202011469287.4A patent/CN112671460A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130259490A1 (en) * | 2012-03-29 | 2013-10-03 | Juniper Networks, Inc. | Processing data in a coherent optical communication system |
| CN103809346A (en) * | 2014-02-26 | 2014-05-21 | 上海交通大学 | Ultra high-speed optical analog-to-digital conversion device |
| CN104639246A (en) * | 2015-01-23 | 2015-05-20 | 北京邮电大学 | Microwave photonic link SFDR (Spurious Free Dynamic Range) enlarging method based on automatic light gain control |
| CN105372902A (en) * | 2015-11-16 | 2016-03-02 | 上海交通大学 | High speed reconstructible optical analog-to-digital conversion apparatus |
| US10630391B1 (en) * | 2017-11-07 | 2020-04-21 | Magiq Technologies, Inc. | RF processing system and method |
| CN110324092A (en) * | 2019-06-20 | 2019-10-11 | 天津师范大学 | The method for reducing PON system receiving end ADC sample rate and sampling bandwidth |
| CN111416663A (en) * | 2020-04-27 | 2020-07-14 | 中国电子科技集团公司第三十四研究所 | High-performance radio frequency optical transmission link structure |
Non-Patent Citations (1)
| Title |
|---|
| 谢世钟等: "微波光子学研究的进展", 《中兴通讯技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117848495A (en) * | 2024-03-07 | 2024-04-09 | 深圳市朗石科学仪器有限公司 | Photon signal acquisition method |
| CN117848495B (en) * | 2024-03-07 | 2024-05-07 | 深圳市朗石科学仪器有限公司 | Photon signal acquisition method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109274381B (en) | Multi-frequency band mobile communication radio frequency transceiver | |
| CN108631870B (en) | Microwave co-frequency signal interference suppression and down-conversion receiving device and method | |
| CN108594013B (en) | Broadband instantaneous frequency measurement system based on radio frequency direct sampling | |
| CN101931425A (en) | Digital receiver | |
| CN102435843A (en) | Device and method for measuring multi-radio frequency | |
| CN112671460A (en) | Microwave photon broadband spectrum analysis device | |
| CN111327364B (en) | System and method for generating vector signal by cascading intensity modulator and IQ modulator | |
| CN210327507U (en) | Frequency conversion assembly for receiving frequency converter | |
| CN109660306B (en) | NB-IoT terminal comprehensive measurement device with 8 ports and comprehensive measurement control method thereof | |
| CN105429658A (en) | Wideband digital channelized system and method based on RF direct sampling | |
| CN108964808B (en) | Radio frequency transceiver chip test system for wireless local area network | |
| Qian et al. | Influence of the demultiplexer on channel-interleaved photonic analog-to-digital converters | |
| US20230097877A1 (en) | Method for implementing predistortion compensation processing for 5g nr in-band modulated signals | |
| CN101132249A (en) | Broadband multi-carrier frequency receiver without intermediate-frequency SAW filter | |
| Cordeiro et al. | All-digital transmitter with RoF remote radio head | |
| US10567083B2 (en) | Sigma-delta modulated RF over fiber and filtering | |
| CN115242322B (en) | Method and system for calibrating broadband spectrum power flatness by comprehensive tester | |
| CN113572542B (en) | High-precision standing-wave ratio detection device for remote radio unit | |
| CN113992556B (en) | Ultra-wideband signal analysis processing system supporting 5G millimeter wave frequency band | |
| CN114374398A (en) | Broadband low-noise high-linearity wide-range demodulation system | |
| Li et al. | Low bit rate digital radio over fibre system | |
| CN219181529U (en) | L frequency channel signal receiving and transmitting equipment | |
| Prata et al. | All-digital transceivers—Recent advances and trends | |
| CN1567772A (en) | Multi-carrier frequency receiver of WCDMA system | |
| Haifeng et al. | Application and Development of Microwave Photonics Technology in Space TT&C System |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210416 |
|
| RJ01 | Rejection of invention patent application after publication |