Title :
A physical model of power amplifiers AM/AM and AM/PM distortions and their internal relationship
Author :
Nunes, Luis C. ; Cabral, Pedro M. ; Pedro, Jose C.
Author_Institution :
DETI, Univ. de Aveiro, Aveiro, Portugal
Abstract :
Signal-dependent phase variation, AM/PM, along with amplitude variation, AM/AM, are known to determine nonlinear distortion characteristics of current-mode PAs. However, these distortion effects have been treated separately, putting more weight on the amplitude distortion, while the AM/PM generation mechanisms are yet to be fully understood. Hence, the aim of this work is to present a large-signal physical model that can describe both the AM/AM and AM/PM PA nonlinear distortion characteristics and their internal relationship.
Keywords :
power amplifiers; AM/AM distortions; AM/PM PA nonlinear distortion characteristics; AM/PM generation mechanisms; amplitude distortion; amplitude variation; current mode PA; large signal physical model; power amplifiers; signal dependent phase variation; Capacitance; Integrated circuit modeling; Nonlinear distortion; Power amplifiers; Solid modeling; Transfer functions; Transistors; Amplitude distortion; phase distortion; power amplifier;
Conference_Titel :
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6177-4
DOI :
10.1109/MWSYM.2013.6697497
