Adaptive anti-multipath interference photon radio frequency receiving front end and method

A technology of multi-channel interference and radio frequency reception, which is applied in the field of microwave photonics, can solve problems such as difficult to achieve multi-channel radio frequency interference suppression, difficult to deal with time-varying interference signals, complex system structure, etc., to achieve no optical interference effect and simplify the system structure , the effect of high adjustment accuracy

Active Publication Date: 2018-09-04
DALIAN UNIV OF TECH
View PDF5 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides an adaptive anti-multi-channel interference photon radio frequency receiving front end, which effectively solves the problems in the background technology that it is difficult to supp

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Adaptive anti-multipath interference photon radio frequency receiving front end and method
  • Adaptive anti-multipath interference photon radio frequency receiving front end and method
  • Adaptive anti-multipath interference photon radio frequency receiving front end and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0050] Example

[0051] figure 1 It is a block diagram of the front-end structure of the adaptive anti-multiplexing photon radio frequency receiving. The signal received by the receiving antenna r(t)=s(t)+n 1 (t)+n 2 (t)+n 3 (t)+……+n N (t), where s(t) is the useful signal, n 1 (t), n 2 (t), n 3 (t), ..., n N (t) is the interference signal, modulated by the first electro-optic modulator to the optical carrier f of the single-wavelength laser source output C0 on. figure 2 It is a schematic diagram of the frequency spectrum of the optical radio frequency signal output by the first electro-optical modulator. The phase of the left and right bands of the optical radio frequency signal is inverted. Arrows of different sizes indicate signals r(t) of different amplitudes and phases received by the receiving antenna. The optical carrier radio frequency signal enters the single-bandpass optical filter, and the right band is filtered by the single-bandpass optical filter. The single-sideban...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an adaptive anti-multipath interference photon radio frequency receiving front end and method, belonging to the technical field of microwave photonics. The photon radio frequency receiving front end and method include the following steps: adopting a multi-wavelength laser source and a wavelength division multiplexing structure to obtain a multi-path optical-carrier microwave reference signal, and adopting a controllable optical attenuation array and a controllable optical delay array to respectively perform optical domain delay and amplitude adjustment on the multi-pathreference signal; and adopting an adaptive feedback control loop to monitor the time variation of interference signals, and performing feedback control on the amplitude and delay of the multi-channelreference signal to achieve adaptive and effective suppression of multi-path interference signals. The adaptive anti-multipath interference photon radio frequency receiving front end and method havethe advantages of simple system structure, large bandwidth, high amplitude and delay control accuracy, and good system stability.

Description

technical field [0001] The invention belongs to the field of microwave photon technology, and in particular relates to an adaptive anti-multipath interference photon radio frequency receiving front end and a method. Background technique [0002] Radio frequency self-interference exists in many applications, such as a new generation of simultaneous and same-frequency full-duplex wireless communication, microwave relay communication, continuous wave radar, and ship electromagnetic compatibility. Taking simultaneous same-frequency full-duplex wireless communication as an example, it uses the same frequency to realize simultaneous transmission and reception of uplink and downlink signals. Compared with frequency division duplex technology and time division duplex technology, it realizes spectrum resource utilization and data throughput. volume doubling. However, in the same-frequency full-duplex communication process, the high-power self-interference signal of the transmitting ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04B10/70H04B10/69H04B10/67
CPCH04B10/67H04B10/674H04B10/6972H04B10/70
Inventor 韩秀友王硕王瀚峤武震林赵明山
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap