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V-band high-efficiency monolithic pseudomorphic HEMT power amplifiers

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7 Author(s)
Pao, C.K. ; Hughes Aircraft Co., Torrance, CA, USA ; Lan, G.L. ; Wu, C.S. ; Igawa, A.
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V-band monolithic power amplifiers have been developed and demonstrate state-of-the-art performance. For a single-stage MMIC amplifier employing a 200- mu m pseudomorphic HEMT, 151.4 mW (757 Mw/mm) output power with 26.4% power-added efficiency at 60 GHz is achieved. Maximum power-added efficiency of 30.6% at 130-mW output power is also obtained. A three-stage MMIC amplifier utilizing the same devices demonstrated 80-mW output power, 20.5% power-added efficiency, and 17-dB associated gain at 57 GHz. The linear gain of the amplifier was 21.5 dB.<>

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:2 ,  Issue: 10 )