A Compact 16 Watt X-Band GaN-MMIC Power Amplifier

H. Klockenhoff, R. Behtash, J. Würfl, W. Heinrich, and G. Tränkle

Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Straße 4, D-12489 Berlin, Germany

Published in:
IEEE MTT-S Int. Microwave Symp. Dig., 2006, 1846 - 1849.
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Abstract:
GaN MMIC power amplifiers for X-Band applications are presented delivering more than 16 W of cw output power while being extremely small in chip size. With a single-device amplifier on a 1.8x2.2 mm² chip 7.8 W output power at 8 GHz are achieved with a maximum PAE of 44%. On a chip of 2.2x3.3 mm² size only, a two-stage amplifier is realized with 18 dB of linear gain and 16 W cw output power at 8 GHz. PAE of the MMIC reaches 30%.

Keywords:
Gallium Nitride, MMIC Power Amplifier, X-Band, Coplanar Wave Guide (CPW)

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