Title: A Lightweight 64-element X-band T/R phased array with Si electronics and RF MEMS switches for SCLP measurements on UAV platforms
Author: John Papapolymerou
Organization: Georgia Tech
Co-Authors: Carlos A. Donado Morcillo, Chad Patterson, Tushar K. Thrivikraman, Benjamin Lacroix, Bill Wilson, Brian Hudson, Christopher T. Coe, Chung H. J. Poh, Ted Heath, John D. Cressler

This paper will present our most recent results on a lightweight transmit-receive (T/R), 64-  lement phased array fully driven by Silicon Germanium (SiGe) integrated circuits and implemented on organic substrates at 9.5 GHz. The array is realized on a lightweight Duroid and Liquid Crystal Polymer substrate stack-up. The radiating elements are driven by SiGe-based T/R modules and power amplifiers.

Additionally, radio-frequency micro-electromechanical (MEMS) switches allow the toggled operation between transmit and receive modes. Measurements showed an average T/R operation 10-dB return loss bandwidth of 2.55GHz, an azimuthal T/R beam-steering range of +/-30∞, a receive gain of 27.28dB and an estimated output power (EIRP) of 41.33dBm. The lightweight X-band array will be employed on the surface of a UAV for SCLP measurements.