Operational behaviors of the class-F and class-F-1 amplifiers are investigated. For the half-
sinusoidal voltage waveform of the class-F-1 amplifier, the amplifier should be operated in …

This work outlines a design approach used for achieving highly efficient power amplification
over a wide bandwidth, given narrowband passive harmonic load-pull results at a single …

This article extends the theory of Class-X power amplifiers (PAs) with maximally flat
waveforms by considering an arbitrary number of harmonics in the analysis. The proposed …

This article presents the design and fabrication of a 6 WX‐band hybrid Class‐J power
amplifier (PA) based on a bare die GaN on SiC HEMT by accurate implementing the …

This paper presents a simple methodology to observe the RF waveforms at the drain source
current reference plane of the transistor, without using a complete nonlinear model. The aim …

作为发射机中耗能最高的器件, 功率放大器(功放) 产生的热量也最多, 提升其效率对整个系统至
关重要, 因此关于提高功放效率的研究从未间断. 回顾了谐波调谐功放的数学推导过程 …

Push-pull transistor consists of two dies on common package. It offers advantage in space,
cost and process invariance between dies. However, on-chip and PCB layout RF coupling …

Power amplifiers (PAs) are one of the most crucial elements in wireless standards becasue
they are the most power hungry subsystems. These elements have to face an important …

Wideband high efficiency power amplifiers are required in tactical communication systems.
Ferrite loaded coaxial baluns are well proven impedance transformation elements used in …

In this study, a broadband high‐power amplifier with resistive harmonic matching is
introduced. The analytical formulations for the drain voltage, output power, optimum load …