Title :
A high-power Ka-band quasi-optical amplifier array
Author :
Ortiz, Sean C. ; Hubert, John ; Mirth, Lee ; Schlecht, Erich ; Mortazawi, Amir
Author_Institution :
Gov. Commun. Syst. Div., Harris Corp., Melbourne, FL, USA
fDate :
2/1/2002 12:00:00 AM
Abstract :
Results for a high-power Ka-band quasi-optical amplifier array are presented in this paper. The amplifier consists of a 45-element double-sided active array with a hard-horn feed. Excess heat is removed via a metal carrier integrated into the array with liquid cooling at the periphery. Each unit cell of the array consists of transmitting and receiving patch antennas, driver and power amplifier monolithic microwave integrated circuits on input and output layers, and a through-plate coaxial transition, which connects the input and output layers. An estimated 25 W is radiated when the amplifier is used as an antenna feed, otherwise 13 W is collected into waveguide. Experimental results and construction details are discussed
Keywords :
MMIC power amplifiers; active antenna arrays; antenna feeds; cooling; microstrip antenna arrays; 13 W; 25 W; MMIC power amplifier; antenna feed; double-sided active array; driver; hard-horn feed; heat removal; high-power Ka-band quasi-optical amplifier array; liquid cooling; metal carrier; receiving patch antenna; through-plate coaxial transition; transmitting patch antenna; waveguide; Driver circuits; Electromagnetic heating; Feeds; High power amplifiers; Liquid cooling; Microwave amplifiers; Microwave antenna arrays; Microwave integrated circuits; Patch antennas; Power amplifiers;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
