NDLI: Microwave Integrated Circuits on GaAs

Content Provider	IEEE Xplore Digital Library
Author	Magarshack, John
Copyright Year	1982
Description	Author affiliation: Thomson-C.S.F./D.C.M., Domaine de Corbeville, 91401 ORSAY (France) (Magarshack, John)
Abstract	A review of the present status of MMIC's is given with special reference to the specific advantages and problems of monolithic microwave circuits as opposed to hybrid circuits. Some applications will also be discussed together with perspectives of future progress in the field. GaAs integrated circuits are nearly 10 years old. The first circuits were, rather surprisingly, ligic circuits. Surprisingly since the GaAs field effect transistor had already shown success with microwave analogue hybridcircuits to the extent of pushing all other devices either towards higher frequences (for Gunn and Avalanche diodes) or higher powers (for tubes) where the FET's are no longer operational. Microwave integrated circuits soon made their appearance however when Ray Pengelly prresented his first amplifier in 1976. The problem that was immediately apparent was that the surface required for microwave circuits was comparatively big for an integrated circuit although much smaller than a hybrid circuit. The real advantages of the monolithic concept, control of parasitic reactances, reproducability, reliability, were offset by the cost of the basic GaAs material since the passive elements occupied a very large proporation of the surface (> 90 %) and as a dielectric substrate GaAs is greater than 50 times more expensive than Al2 02.
Starting Page	5
Ending Page	15
File Size	13640821
Page Count	11
File Format	PDF
DOI	10.1109/EUMA.1982.333136
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1982-09-13
Publisher Place	Finland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microwave integrated circuits Gallium arsenide Microwave FET integrated circuits Microwave circuits Microwave devices Frequency Gunn devices Diodes Microwave amplifiers Hybrid integrated circuits
Content Type	Text
Resource Type	Article

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