Title :
A 4 watt Ka-band quasi-optical amplifier
Author :
Hubert, J. ; Mirth, L. ; Ortiz, S. ; Mortazawi, A.
Author_Institution :
Lockheed Martin, Orlando, FL, USA
Abstract :
This paper reports on demonstrated results for a 4 W, 16 dB gain Ka-band Quasi-Optical (QO) amplifier. This amplifier consists of a 13 element two-sided active array with a hard-horn feed. Excess heat is removed via a metal carrier integrated into the array. Each unit-cell consists of patch antennas, cascaded MMIC amplifiers and a unique through-thick-plate coupler. Performance and construction details are discussed. Preliminary results from a 45 element design are also included.
Keywords :
MMIC amplifiers; active antenna arrays; arrays; cooling; horn antennas; microstrip antenna arrays; microwave power amplifiers; packaging; power combiners; 16 dB; 4 W; 45 element design; Ka-band quasi-optical amplifier; cascaded MMIC amplifiers; hard-horn feed; heat removal; metal carrier; patch antennas; power combining array; through-thick-plate coupler; two-sided active array; Apertures; Cogeneration; Dielectric materials; Driver circuits; Feeds; Gain; MMICs; Microstrip antenna arrays; Patch antennas; Phased arrays;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779822
