Title :
A Two-Stage Amplifier Lens Array
Author :
Tore Berg;Stein Hollung;Jason A. Lee;Zoya B. Popovic
Author_Institution :
Department of Electrical and Computer Engineering, University of Colorado, Boulder, CO 80309
Abstract :
A double-layer quasi-optical lens amplifier array with a two-stage amplifier in each element is presented. The lens amplifier is designed for X-band, and consists of two 14-element arrays on separate substrates sharing a common ground plane. The measured antenna gain is 15.1 dB with a power combining efficiency of 75 %. A radiated power of 414mW is measured at the 1-dB saturation point of the array. The devices used in this amplifier are low-cost MESFETs, so the estimated power cost is 85$/Watt for this transmitter.
Keywords :
"Lenses","Antenna measurements","Power measurement","Gain measurement","Feeds","Antenna arrays","Optical design","Power amplifiers","Impedance","Polarization"
Conference_Titel :
Microwave Conference, 1998. 28th European
DOI :
10.1109/EUMA.1998.338113
