Title :
Hybrid Photonic True-Time Delay Modules for Quasi-Continuous Steering of 2-D Phased-Array Antennas
Author_Institution :
Ingram Sch. of Eng., Texas State Univ., San Marcos, TX, USA
Abstract :
Hybrid photonic true-time delay modules for phased-array antennas are designed and demonstrated. Continuously tunable true-time delay network based on highly dispersive photonic bandgap fiber (up to 2135 ps/nm/km at 1570 nm), combined with a programmable true-time delay network utilizing optical waveguide delay line and optical switches, provides the antenna with quasi-continuous steering ability. Far-field patterns are simulated and measured to confirm the squint-free beam steering.
Keywords :
antennas; beam steering; integrated optoelectronics; modules; optical communication equipment; optical delay lines; optical fibre dispersion; optical fibre networks; optical switches; photonic band gap; 2D phased-array antennas; far-field patterns; highly-dispersive photonic bandgap fiber; hybrid photonic true-time delay module network; optical switches; optical waveguide delay line; quasicontinuous steering; squint-free beam steering; Arrays; Delay; Delay effects; Optical fiber dispersion; Optical switches; Optical waveguides; Optical switch; phased-array antenna (PAA); photonic bandgap fiber; photonic true-time delay;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2236536
