Characterizing a varactor contribution to the residual distortion of load-modulated PAs

Author

Aballo, T. ; Marante, R. ; García, J.A. ; Mediavilla, A.

Author_Institution

Dept. of Commun. Eng. (DICOM), Univ. of Cantabria, Santander, Spain

fYear

2011

fDate

18-19 April 2011

Firstpage

1

Lastpage

4

Abstract

In this paper, a technique for extracting the Taylor series expansion coefficients of a varactor reactive nonlinearity is presented. A single diode and a dual-device antiseries (back-to-back cathode) combination have been characterized, aimed to accurately control their contribution to the residual intermodulation distortion (IMD) appearing in load-modulated power amplifiers (PAs). A test set-up for dynamically measuring the harmonic content has been implemented, able to be extended to the evaluation of load-based envelope tracking transmitters.

Keywords

power amplifiers; varactors; Taylor series expansion coefficients; back-to-back cathode; dual-device antiseries combination; harmonic content; load-based envelope tracking transmitters; load-modulated power amplifiers; residual intermodulation distortion; single diode; varactor contribution; varactor reactive nonlinearity; Impedance; Integrated circuit modeling; Radio frequency; Reactive power; Varactors; Voltage control; Voltage measurement; Nonlinear distortion; Taylor series expansion; power amplifiers; varactor diode;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), 2011 Workshop on

Conference_Location

Vienna

Print_ISBN

978-1-4577-0650-9

Type

conf

DOI

10.1109/INMMIC.2011.5773326

Filename

5773326