Fiber-optic true time steering of an ultrawide-band receive array

被引：52

作者：

Frankel, MY

Matthews, PJ

Esman, RD

机构：

[1] Naval Research Laboratory, Optical Sciences Division

来源：

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

关键词：

antenna array feeds; phased arrays; optical control; optical fiber delay lines;

D O I：

10.1109/22.618469

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：

We report the development and demonstration of the first true time-delay (TTD) fiber-optic beamformer for ultrawide-band antenna receive operation, The beamformer is based on a dispersive-fiber prism configuration that properly time delays the signals originating at each receiving element for coherent combining in the microwave domain, The time-steered receive antenna consists of eight spiral elements arranged into a one-dimensional (1-D) sparsely populated array, The receive array shows an instantaneous bandwidth of 6-18 GHz, limited by the available matched microwave amplifiers, The array performance is measured in an anechoic chamber and exhibits unprecedented squint-free steering over an azimuth scan of 120 degrees over the full frequency range.

引用

页码：1522 / 1526

页数：5

共 11 条

[1]

[Anonymous], 1994, PHOTONIC ASPECTS MOD

[2] 2-DIMENSIONAL OPTICAL ARCHITECTURE FOR TIME-DELAY BEAM FORMING IN A PHASED-ARRAY ANTENNA [J].