Optical-fiber grating-based beamforming network for microwave phased arrays

被引：53

作者：

Minasian, RA ^{[1
]}

Alameh, KE ^{[1
]}

机构：

[1] UNIV SYDNEY,AUSTRALIAN PHOTON COOPERAT RES CTR,SYDNEY,NSW 2006,AUSTRALIA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1997年 / 45卷 / 08期

基金：

澳大利亚研究理事会;

关键词：

Bragg gratings; microwave photonics; optical fiber interconnects; phase-array antennas;

D O I：

10.1109/22.618466

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new photonic-based beamforming network that can realize a large number of simultaneous and independent beams in a wide-band phased-array antenna, and which eliminates optical beat-noise interference is presented, It is based on discrete and chirped Bragg-grating true-time delay elements and photodetector arrays at each beam port, This achieves a highly parallel delay-processing structure for signal equalization and eliminates the fundamental optical beat-noise limitation to the realization of large array sizes, Results show a very substantial reduction in the number of interconnects required of 98.4 % for a 512-beam array and 99.2% for a 1024-beam array, in comparison to conventional beamforming techniques.

引用

页码：1513 / 1518

页数：6

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