2012•Microwave and Optical Technology LettersRequires access

46‐W high efficiency unbalanced doherty power amplifier in extended output power back‐off

Dong‐Hee Jang, Ji‐Yeon Kim, Ji‐Yeon Kim, Jong‐Heon Kim, Jong‐Heon Kim

Abstract

Abstract A 46‐W unbalanced Doherty amplifier is proposed to obtain high efficiency at the output power back‐off beyond 6 dB using the same type of transistors in both the main and the peaking amplifier.An added power efficiency of 38% and an adjacent channel power ratio of −35.6 dBc were measured for a CDMA2000 1FA signal. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1612–1614, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26865

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Key concepts: Amplifier, Electrical engineering, Doherty amplifier, Power (physics), Power-added efficiency, Linear amplifier, Microwave, Transistor