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A 1-W high-efficiency Q-band MMIC power amplifier

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5 Author(s)
Chi, J.C.L. ; Electron. Syst. & Technol. Div., TRW Inc., Redondo Beach, CA, USA ; Lester, J.A. ; Hwang, Y. ; Chow, P.D.
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Recent development on MMIC power amplifier has pushed the power-added efficiency (PAE) of 1-W amplifier to 29.4%. The power amplifier, using 0.15-μm InGaAs T-gate PHEMT devices, can deliver 1.2 W with 25% efficiency at 40 GHz when the drain is biased at 5 V. When the drain voltage drops to 4 V the output power is 1 W with 9-db associated gain and 29.4% PAE. The measured linear gain is averaged to be 12.5 db from 38-44 GHz.

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:5 ,  Issue: 1 )