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Proceedings Paper

MMIC: a key technology for future communications satellite antennas
Author(s): Robert M. Sorbello; A. I. Zaghloul; Rakesh K. Gupta; Bernard D. Geller; F. T. Assal; J. Ram Potukuchi
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Paper Abstract

The results of ongoing development programs in the area of advanced satellite antenna technology currently being pursued at COMSAT Laboratories, under the sponsorship of the World Systems Division of COMSAT Corporation, are described. These programs are exploiting the promise of monolithic microwave integrated circuits (MMICs) as they apply to active phased arrays. Performance data on two phased-array programs are presented. The first program involves the development of a 64-element array in which MMICs are used to optimize and reconfigure the radiation pattern performance. The array is capable of generating a single beam and accurately synthesizing a specified radiation performance. The second array program, building on knowledge gained in the first program, addresses the problems of generating multiple beams, as well as the effect of power amplifiers on multicarrier performance. MMICs are employed in the beam-forming matrix and in the distributed 2-W solid-state power amplifiers. This design is capable of forming four simultaneous, independently steerable beams while allowing for flexible power sharing among the beams.

Paper Details

Date Published: 1 July 1991
PDF: 9 pages
Proc. SPIE 1475, Monolithic Microwave Integrated Circuits for Sensors, Radar, and Communications Systems, (1 July 1991); doi: 10.1117/12.44493
Show Author Affiliations
Robert M. Sorbello, COMSAT Labs. (United States)
A. I. Zaghloul, COMSAT Labs. (United States)
Rakesh K. Gupta, COMSAT Labs. (United States)
Bernard D. Geller, COMSAT Labs. (United States)
F. T. Assal, COMSAT Labs. (United States)
J. Ram Potukuchi, COMSAT Labs. (United States)


Published in SPIE Proceedings Vol. 1475:
Monolithic Microwave Integrated Circuits for Sensors, Radar, and Communications Systems
Regis F. Leonard; Kul B. Bhasin, Editor(s)

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