Programmable beam forming network on basis of optical wavelength division multiplexing technology

A beamforming and wavelength division multiplexer technology, applied in the field of microwave photonics, can solve problems such as restricting the application of phased array antennas, limiting phased array antennas, limiting radar bandwidth, etc., achieving small delay steps and improving scanning Accuracy and the effect of suppressing insertion loss

Active Publication Date: 2014-01-22
SHANGHAI JIAO TONG UNIV
View PDF7 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional electronically controlled phased array radar is limited by the "aperture effect" of the phased array antenna (see Zhang Guangyi, Zhao Yujie, Phased Array Radar Technology. Beijing: Electronic Industry Press, 2006.12:390-392), that is, the signal The frequency change will cause the beam pointing to shift, thus limiting the bandwidth of the radar, whic

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
  • Programmable beam forming network on basis of optical wavelength division multiplexing technology
  • Programmable beam forming network on basis of optical wavelength division multiplexing technology
  • Programmable beam forming network on basis of optical wavelength division multiplexing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] A specific embodiment of the present invention is given below in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and processes are given, but the protection scope of the present invention should not be limited to the following embodiments.

[0032] figure 1 It is a schematic structural diagram of an embodiment of an ultra-wideband and large dynamic range programmable beamforming network based on optical wavelength division multiplexing technology in the present invention. As can be seen from the figure, this embodiment is based on the optical wavelength division multiplexing technology ultra-wideband large dynamic range programmable beamforming network, which consists of: a first wavelength division multiplexer 1, a second wavelength division multiplexer 19, an optical modulation 2, the first 1×2 optical switch 3, the second 1×2 optical swit...

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 relates to a programmable beam forming network on the basis of an optical wavelength division multiplexing technology, which structurally comprises a wavelength division multiplexer, an electrooptic modulator, a 1*2 optical switch, a 2*2 optical switch, an optical amplifier, a circulator, a Faraday rotatormirror and an optical fiber true-time delay line. According to the invention, coherent microwave carrier signals with different phase delays can be generated, so that a function of an electric phase shifter in a conventional electric-control phase-control array radar is replaced and an aperture effect in the conventional phase-control array radar is greatly eliminated; and the programmable beam forming network has the advantages of ultra wide band, large dynamic range, programmable control and the like.

Description

technical field [0001] The invention relates to a device in the field of microwave photonics, in particular to a programmable beamforming network with ultra-wideband and large dynamic range based on optical wavelength division multiplexing technology. Background technique [0002] Phased array antenna systems are widely used in fields such as radar and communication systems, and one of the essential components is the phase-delayed beamforming network. In the traditional electronically controlled phased array antenna, an electric phase shifter is set on each antenna unit to change the phase relationship of the signals between the antenna units, so as to provide coherent microwaves with different phase differences for the phased array radar. Signal. However, the traditional electronically controlled phased array radar is limited by the "aperture effect" of the phased array antenna (see Zhang Guangyi, Zhao Yujie, Phased Array Radar Technology. Beijing: Electronic Industry Pres...

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): H04B7/06H04J14/02
Inventor 邹卫文余安亮刘辰钧陈建平
Owner SHANGHAI JIAO TONG UNIV
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