Title :
Non-linear large signal PA modelling for switching-mode operation (class-F/continuous class-F)
Author :
Paynter, M. ; Bensmida, S. ; Morris, K.A. ; McGeehan, J.P. ; Akmal, M. ; Lees, J. ; Benedikt, J. ; Tasker, P. ; Beach, M.
Author_Institution :
Centre for Commun. Res., Univ. of Bristol, Bristol, UK
Abstract :
This paper proposes a novel GaN HEMT non-linear model extraction method from small-signal cold S-parameters and large signal waveform measurements, here demonstrated in simulation. These waveform measurements are taken in simple 50Ω conditions, but will be shown to be suitable for switching-mode power amplifier (PA) designs. Class-F and Continuous Class-F switching modes will be demonstrated with this model and verified by comparison with existing work which uses load-pull measurements to achieve the same results.
Keywords :
III-V semiconductors; S-parameters; gallium compounds; high electron mobility transistors; measurement systems; power amplifiers; wide band gap semiconductors; GaN; HEMT nonlinear model extraction method; class-F-continuous class-F switching modes; large signal waveform measurements; load-pull measurements; nonlinear large signal PA modelling; resistance 50 ohm; small-signal cold S-parameters; switching-mode power amplifier designs; Gallium nitride; Microwave amplifiers; Microwave circuits; Microwave integrated circuits; Power amplifiers; Switches;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2011 European
Conference_Location :
Manchester
Print_ISBN :
978-1-61284-236-3
