Ku-Band Radio Frequency Microelectromechanical SystemEnabled Electronically Scanned Antenna

Report No. ARL-TR-4280
Authors: Ronald G. Polcawich, Daniel Judy, Jeffrey S. Pulskamp, and Steve Weiss
Date/Pages: October 2007; 20 pages
Abstract: The Army Research Laboratory (ARL) has designed, fabricated, and measured an eight element Ku-band radio frequency (RF) microelectromechanical system (MEMS) based electronically scanned antenna (ESA). This ESA is comprised of eight patch antennas with each patch individually fed by separate phase shifters. The reflection phase shifters use ARLs patent pending MEMS ohmic shunt switch. The ohmic shunt switch performance characteristics include insertion loss less than 0.3 decibel (dB) and isolation greater than 20 dB from direct current (DC) to 40 gigahertz (GHz). The 17 GHz phase shifters have an average insertion loss of 2.5 dB and a return loss greater than 20 dB. The effort resulted in successful beam steering using RF MEMS phase shifters. The work represents ARL's continuing effort in low-cost electronically scanned antennas in support of the Future Force.
Distribution: Approved for public release
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Last Update / Reviewed: October 1, 2007