Title :
Continuously delay-time tunable-waveguide hologram module for X-band phased-array antenna
Author :
Shi, Zhong ; Jiang, Yongqiang ; Howley, Brie ; Yihong Chen ; Zhao, Feng ; Chen, Yihong
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Texas, Austin, TX, USA
fDate :
7/1/2003 12:00:00 AM
Abstract :
Tunable optical true time-delay modules based on a dispersive waveguide hologram are presented to provide continuous radio-frequency beam scanning for an X-band (8-12 GHz) phased-array antenna system. The true time-delay modules operating in the 1550-nm region were fabricated with continuously tunable time delays from 5 to 64 ps. The far-field radiation patterns were measured with different delay combinations and the continuity of the scanning angles from 35/spl deg/ to 55/spl deg/ was experimentally confirmed at X-band frequencies.
Keywords :
antenna phased arrays; antenna radiation patterns; delays; holography; microwave photonics; modules; optical communication equipment; optical tuning; optical waveguides; 1550 nm; 5 to 64 ps; 8 to 12 GHz; X-band frequencies; X-band phased-array antenna; continuously delay-time tunable-waveguide hologram module; continuously tunable time delays; delay combinations; phased-array antenna system; radio-frequency beam scanning; scanning angles; true time-delay modules; Delay effects; Diffraction; Electromagnetic waveguides; Glass; Optical surface waves; Optical tuning; Optical waveguides; Radar antennas; Radio frequency; Surface waves;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.813392
