volume | PIER Journals

Abstract

This paper introduces a multimode hybrid continuous class power amplifier utilizing a band-pass filter. It integrates resistive response amplifiers operating in three modes: class F, class J, and class F-1. Instead of the traditional quarter-wavelength line for harmonic control, an interdigital band-pass filter is utilized to manage harmonic impedance, enabling broadband operation, high efficiency, reduced circuit size, and improved out-of-band rejection. To demonstrate the approach, a multimode hybrid broadband high-efficiency power amplifier designed for 2 to 3.8 GHz range, achieving drain efficiency from 56.3% to 75.5%, saturated output power ranging from 39.1 to 41.2 dBm, and gain between 11.1 and 13.2 dB, is detailed and fabricated in this paper.

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Dr. Shiwei Zhao

Dr. Linsong Li

Dr. Sijia Li

Mr. Zuqiang Zhang

Dr. Longfei Zhou

Dr. Fei Zhao