Multibeam Phase-Shifter-Less Antenna Arrays and Free-Space Measurements

This talk describes the analysis, design and measurements of steered and multi-beam phase-shifter-less passive and active antenna arrays. Active arrays include receive, transmit and both full and half-duplex T/R arrays. Examples of arrays from 36 to 956 elements in size and from X to W-band will be given, with various applications, including LEO satellite down-links (8.36GHz), formation-flying satellite links (28GHz), multi-path mitigation (10GHz) and angle-of-arrival detection (through W band).