Nonlinearity estimation in power amplifiers based on undersampled temporal data

Author

Ibanez-Diaz, Jesus ; Pantaleon, Carlos ; Santamaria, Ignacio ; Fernandez, Tomas ; Martinez, David

Author_Institution

DICOM, Cantabria Univ., Santander, Spain

Volume

3

fYear

2000

fDate

2000

Firstpage

1266

Abstract

In this paper we apply undersampling techniques to capture the temporal input-output relationship of RF power amplifiers. This approach avoids the distortion introduced by the upconverter and downconverter stages. We develop polynomial models with memory from the available data and evaluate its performance estimating device parameters like Adjacent power Ratio (ACPR) and AM-AM curves. The estimated parameters show good agreement with the empirical ones

Keywords

analogue-digital conversion; nonlinear network analysis; parameter estimation; polynomials; power amplifiers; radiofrequency amplifiers; signal sampling; AM-AM curves; GaAs MESFET amplifier; Motorola; RF power amplifiers; adjacent power ratio; distortion; downconverter; nonlinearity estimation; performance estimating device parameters; polynomial models; power amplifiers; undersampled temporal data; upconverter; Bandwidth; Broadband amplifiers; Digital signal processing; Parameter estimation; Polynomials; Power amplifiers; Power system modeling; Radio frequency; Radiofrequency amplifiers; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE

Conference_Location

Baltimore, MD

ISSN

1091-5281

Print_ISBN

0-7803-5890-2

Type

conf

DOI

10.1109/IMTC.2000.848680

Filename

848680