Squint Reduction of L Band Phased Array Using Novel Miniature True Time Delay

Abstract

Time Delay steering of phased arrays is preferred for modern, large fractional bandwidth systems, but size, weight and power (SWaP) limitations often preclude its use at the element level. Time delays based on magnetostatic waves (MSW) have many properties that facilitate element-level time-delay steering. Techniques for designing low dispersion and low loss delay lines are simulated, and initial prototype data are presented. In an example L-band phased array, squint loss improvement due to a MSW time delay unit developed by Metamagnetics is modeled and discussed.