Symmetrical Doherty power amplifier with extended efficiency range

M Özen, K Andersson, C Fager - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
A symmetrical Doherty power amplifier (PA) with an extended efficiency range is proposed.
This paper proves the existence of a class of symmetrical Doherty PAs having efficiency …

Not just a phase: Outphasing power amplifiers

T Barton - IEEE Microwave Magazine, 2016 - ieeexplore.ieee.org
Performing RF amplification in a way that is simultaneously linear and efficient has long
been a challenge in power amplifier (PA) design. In short, single-transistor PAs can either be …

Confounding effect of biologic maturation on sex differences in physical activity and sedentary behavior in adolescents

AMM Rodrigues, MJC e Silva… - Pediatric …, 2010 - journals.humankinetics.com
Sex differences in physical activity (PA) through pubertal maturation and the growth spurt
are often attributed to changing interests. The contribution of sex differences in biological …

A generalized combiner synthesis technique for class-E outphasing transmitters

M Özen, M Van Der Heijden, M Acar… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
In this paper, a generic combiner design technique is developed for class-E outphasing
transmitters. The design procedure starts with calculation of the combiner network …

Novel outphasing power amplifiers designed with an analytic generalized Doherty–Chireix continuum theory

C Liang, P Roblin, Y Hahn, Z Popovic… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
An analytic theory for dual-input outphasing power amplifiers that incorporate in one unified
treatment, the continuum of solutions for power combining including the Doherty and Chireix …

Theory and implementation of RF-input outphasing power amplification

TW Barton, DJ Perreault - IEEE Transactions on Microwave …, 2015 - ieeexplore.ieee.org
Conventional outphasing power amplifier systems require both a radio frequency (RF)
carrier input and a separate baseband input to synthesize a modulated RF output. This work …

New mixed-mode design methodology for high-efficiency outphasing chireix amplifiers

HC Chang, Y Hahn, P Roblin… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
A new design methodology providing optimal mixed-mode operation for dual-input class-F
outphasing Chireix amplifiers is presented. The design starts with single-transistor class-F …

Load modulation of harmonically tuned amplifiers and application to outphasing systems

PE de Falco, P Pednekar, K Mimis… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
Modulation of load impedance is an effective way to maintain efficient power amplifier (PA)
operation over high dynamic range modulated signals. For high efficiency, a load …

A generalized 3-dB Wilkinson power divider/combiner with complex terminations

W Hallberg, M Özen, D Kuylenstierna… - IEEE Transactions …, 2018 - ieeexplore.ieee.org
A generalized 3-dB isolated three-port power divider/combiner is presented. The termination
impedances of the two electrically isolated ports are selected as equal complex values of …

Accelerated design methodology for dual-input Doherty power amplifiers

C Liang, P Roblin, Y Hahn - IEEE Transactions on Microwave …, 2019 - ieeexplore.ieee.org
A novel design theory and the methodology are presented for dual-input Doherty power
amplifiers (DPAs) in which the auxiliary transistor does not fully turn off at backoff power …