Miniaturization design of L-band Class-F power amplifier module

Abstract

The miniaturization development of traditional Class-F power amplifiers is limited due to the independent design of harmonic suppression and impedance matching networks. In this paper, the method of comprehensive design of harmonic suppression and impedance matching networks is adopted to reduce the size of a Class-F power amplifier. To verify the feasibility of the proposed approach, a three-stage power amplifier module operating at 1.575 GHz and 40 dBm was designed, with the Class-F amplifier as the final stage amplifier. The saturation power added efficiency (PEA) of the final stage amplifier is 60% and its size is only 20%-42% of that reported for similar amplifiers.