Range demonstration of an ultra-wideband, continuous, time steered array using a fiber-optic, cascaded grating prism

Abstract

We demonstrate an ultra-wideband fiber optic true time-delay receive beamformer using a chirped grating architecture of identical, cascaded gratings provided continuous, time-delay of up to 2.4 ns. The beamformer system was built using commercially available components, and is capable of continuous tuning over /spl plusmn/60/spl deg/, with an instantaneous bandwidth of 14 GHz.