Multilevel supply-modulated Chireix outphasing with continuous input modulation

T Cappello, TW Barton, C Florian… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
This paper presents a dynamic characterization of a multilevel (ML) Chireix outphasing (ML-
CO) power amplifier (PA) with modulated signals. The ML-CO technique combines the …

A load-modulated low-power amplifier with average power tracking

K Mimis, S Wang, GT Watkins - 2015 European Microwave …, 2015 - ieeexplore.ieee.org
A supply-and load-modulated RF power amplifier is proposed for applications in which
output power control is required. The drain supply is scaled in harmony with the required …

Design method for harmonically-tuned, dynamic load-modulated power amplifiers

K Mimis, GT Watkins - 2015 German Microwave Conference, 2015 - ieeexplore.ieee.org
In this paper, an alternative technique for the design of harmonically-tuned, dynamic load-
modulated power amplifiers is proposed, investigated and compared against traditional load …

Bandwidth reduction in dynamic load-modulated power amplifiers: control and RF signal expansion, efficiency and linearity trade-offs

K Mimis, GT Watkins - 2015 IEEE Topical Conference on Power …, 2015 - ieeexplore.ieee.org
This paper presents an experimental investigation of the effect of bandwidth reduction for
baseband control signals used in dynamic load-modulated (DLM) amplifiers. Using a low …

Impact of time misalignment and input signal statistics in dynamically load-modulated amplifiers

K Mimis, GT Watkins - International Journal of Microwave and …, 2015 - cambridge.org
The effect of time misalignment between the radiofrequency (RF) input and tunable
matching network control signal in dynamically load-modulated power amplifiers (Pas) is …

Experimental investigation of signal time misalignment in dynamic load modulation amplifiers

K Mimis, GT Watkins - 2014 44th European Microwave …, 2014 - ieeexplore.ieee.org
The effect of time misalignment between the RF input and tuneable matching network (TMN)
control signal in load-modulated PAs is experimentally investigated. A reactively load …

A 56 W power amplifier with 2-level supply and load modulation

S Kelz, M Schmidt, N Wolff, M Berroth… - 2016 German …, 2016 - ieeexplore.ieee.org
Dynamic load modulation is proposed to improve the efficiency of an RF power amplifier
with discrete supply modulation. A 47.5 dBm, 2.7 GHz power amplifier is realized to show …