Title :
Doherty power amplifier behavioral models based on pruned Volterra series
Author :
Liu, Wei ; Zhao, Yongjiu ; Liu, Bing ; Yuan, Chunhua ; Xu, Shuchen
Author_Institution :
Coll. of Inf. Sci. & Technol., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
In this paper, an efficient and effective pruned Volterra model is used to describe Doherty power amplifier. Rather than adopting the "black-box" approach, this model is derived from a physically scheme referring to the Doherty power amplifier. To model a Doherty power amplifier with nonlinearities and memory effects, the amplifier is analyzed by two parts in consideration of the influence between two amplifiers, while one is used to model the Class A or AB amplifier and the other to model Class C amplifier. With the Doherty amplifier tested, the proposed behavioral model is validated, and the corresponding experimental results achieve a good agreement with the desire output data.
Keywords :
Volterra series; circuit testing; power amplifiers; Class A amplifier; Class AB amplifier; Class C amplifier; Doherty amplifier testing; Doherty power amplifier; memory effects; nonlinearities; pruned Volterra series; Analytical models; Computational modeling; Filtering theory; Integrated circuit modeling; Maximum likelihood detection; Nonlinear filters; Power amplifiers; Behaviol model; Dohety PA; OFDM; Pruned Volterra series;
Conference_Titel :
Computer Science and Service System (CSSS), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9762-1
DOI :
10.1109/CSSS.2011.5972172
