Compact optical true time delay beamformer for a 2D phased array antenna using tunable dispersive elements

被引：37

作者：

Ye, Xingwei ^{[1
]}

Zhang, Fangzheng ^{[1
]}

Pan, Shilong ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Key Lab Radar Imaging & Microwave Photon, Minist Educ, Nanjing 210016, Jiangsu, Peoples R China

来源：

OPTICS LETTERS | 2016年 / 41卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Beam forming networks - Fiber Bragg gratings - Group delay - Beamforming - Timing circuits - Directional patterns (antenna) - Dispersion (waves) - Time delay;

D O I：

10.1364/OL.41.003956

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A hardware-compressive optical true time delay architecture for 2D beam steering in a planar phased array antenna is proposed using fiber-Bragg-grating-based tunable dispersive elements (TDEs). For an M x N array, the proposed system utilizes N TDEs and M wavelength-fixed optical carriers to control the time delays. Both azimuth and elevation beam steering are realized by programming the settings of the TDEs. An experiment is carried out to demonstrate the delay controlling in a 2 x 2 array, which is fed by a wideband pulsed signal. Radiation patterns calculated from the experimentally measured waveforms at the four antennas match well with the theoretical results. (C) 2016 Optical Society of America

引用

页码：3956 / 3959

页数：4

共 15 条

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