A theory for class-J microwave amplifier operation as a function of drive level and
fundamental load impedance is derived. Calculations show that, under appropriate …

A new methodology for the design of single/multi-band power amplifiers (PAs) with dynamic
load modulation (DLM) is presented. First, the topology for the output matching network …

The quality, resolution, and quantity of information transmitted in RF front end modules favor
compact tunable filters with varactor elements that can handle high power and that are …

A new switch-mode power-amplifier (SMPA) topology particularly suitable for energy
efficient amplification of RF pulsewidth modulation (RF-PWM) signals is derived. It is …

A novel class-J operated power amplifier (PA) utilizing varactor-based dynamic load
modulation is presented. It is theoretically shown that the proposed PA can maintain high …

This paper presents a new systematic and efficient method for the design of high-power
varactor-based impedance tuners. By incorporating the varactor losses and voltage …

Variable capacitors (varactors) can act as powerful enablers for reconfigurable RF power
amplifiers (PAs) in microwave monolithic integrated circuit (MMIC) technology. While their …

Discrete high power RF varactors based on bariumstrontium-titanate are presented in this
paper. They are targeting high power applications up to 3 GHz and feature power handling …

Output power scaling based on class-J dynamic load modulation (DLM) theory is used to
design an unprecedentedly high power microwave transmitter with varactor-based DLM …

The identification and optimization of tunable dielectric materials exhibiting low loss
characteristics in the GHz frequencies are essential in the development of low power …