High-power hybrid quasi-optical Ka-band amplifier design

Author

Hubert, Julien ; Schoenberg, J. ; Popovic, Z.B.

Author_Institution

Martin Marietta Electron. Syst., Orlando, FL, USA

fYear

1995

fDate

16-20 May 1995

Firstpage

585

Abstract

We report the first demonstration of a quasi-optical millimeter-wave amplifier. The cell consists of a MMIC driver followed by a two-stage high power amplifier chip. Input as well as output antennas are anti-resonant slots fabricated on a GaAs monolithic antenna array. A 6/spl times/6 array is designed for an output power in excess of 8 Watts. The array allows a variety of MMIC amplifier chips to populate any number of cells up to the full array size. An absolute power gain of 6 dB was achieved at 29 GHz. A liquid-cooled test fixture was designed to remove excess heat from the amplifiers. Amplifiers of this type could be used in communication or radar systems to produce high power with reduced size, weight, and lower system cost.<>

Keywords

MMIC power amplifiers; hybrid integrated circuits; millimetre wave amplifiers; power amplifiers; 29 GHz; 6 dB; 8 W; EHF; GaAs; GaAs monolithic antenna array; Ka-band amplifier; MM-wave power amplifier; MMIC driver; anti-resonant slots; hybrid quasi-optical amplifier design; liquid-cooled test fixture; millimeter-wave amplifier; two-stage high power amplifier chip; Antenna arrays; Driver circuits; Gallium arsenide; High power amplifiers; MMICs; Millimeter wave communication; Millimeter wave radar; Power amplifiers; Power generation; Slot antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1995., IEEE MTT-S International

Conference_Location

Orlando, FL, USA

ISSN

0149-645X

Print_ISBN

0-7803-2581-8

Type

conf

DOI

10.1109/MWSYM.1995.406019

Filename

406019