Abstract
A Doherty amplifier is described in which odd harmonics from the class-C peaking amplifier flow to the main amplifier to achieve class-F operation, without the need for complicated space consuming harmonic control circuits. The measured efficiency exceeded 50% above the 6 dB back-off. The measured second and third harmonic levels were below −19 dBc. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26035
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