A Compact Broadband PHEMT MMIC Power Amplifier for K through Ka-band Applications

Authors: Lee Y.C.h.u.l.¹; Park C.S.o.o.n.¹

Source: AEÜ – International Journal of Electronics and Communications, Volume 57, Number 4, January 2003 , pp. 291-294(4)

Publisher: Urban & Fischer

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Abstract:

A compact and broadband MMIC power amplifier operating from 18 GHz to 35 GHz is developed for K- through Ka-band applications implementing a rigorous electromagnetic (EM) simulation of closely spaced matching networks. The EM simulation results in a compact chip size as small as 2.16 mm × 2.0 mm and isolations of less than -25 dB up to 40 GHz between neighboring distributed structures. The two-stage balanced power amplifier fabricated using a 0.25 mgr

m AlGaAs/InGaAs/GaAs PHEMT technology has an average gain of 11 dB, return losses less than -10 dB, and P1 dB above 20.5 dBm from 18 GHz to 35 GHz. This compact and broadband MMIC power amplifier is suited for power amplifiers for most K through Ka-band communication systems such as the FSS, LMDS, and ITS.

Document Type: Research article

DOI: 10.1078/1434-8411-54100174

Affiliations: 1: School of Engineering, Information and Communications University(ICU), Korea. s: yi_young@icu.ac.kr, parkcs@icu.ac.kr

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