Linearity optimization of a distributed base station amplifier using an automated high-speed measurement protocol

Author

van der Heijden, M.P. ; Gajadharsing, J.R. ; Rejaei, B. ; de Vreede, L.C.N.

Author_Institution

Lab. of ECTM, DIMES, Delft Univ. of Technol., Netherlands

Volume

3

fYear

2001

fDate

20-24 May 2001

Firstpage

1679

Abstract

This paper describes a high-speed measurement protocol using a high-order implementation of the complex power series representation (CPSR). The CPSR is used to relate AM-AM and AM-PM conversion (large signal S/sub 21/) to the 3rd-order intermodulation distortion (IM3) of an amplifier up to gain compression. This method requires the use of a network analyzer only and eliminates the need for a spectrum analyzer speeding-up the measurements tremendously. The method has proven to be very powerful in a real-time optimization of bias parameter of a novel linear distributed amplifier for base stations.

Keywords

amplitude modulation; automatic testing; circuit optimisation; distributed amplifiers; intermodulation distortion; network analysers; phase modulation; power amplifiers; radiofrequency amplifiers; series (mathematics); AM-AM conversion; AM-PM conversion; RF power amplifier; automated high-speed measurement protocol; base station; bias parameter; complex power series representation; gain compression; large-signal characteristics; linear distributed amplifier; network analyzer; real-time linearity optimization; third-order intermodulation distortion; wireless communication; Base stations; Distortion measurement; Distributed amplifiers; Intermodulation distortion; Linearity; Optimization methods; Power measurement; Protocols; Spectral analysis; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2001 IEEE MTT-S International

Conference_Location

Phoenix, AZ, USA

ISSN

0149-645X

Print_ISBN

0-7803-6538-0

Type

conf

DOI

10.1109/MWSYM.2001.967228

Filename

967228