Analysis and practical performance of a difference frequency technique for improving the multicarrier IMD performance of RF amplifiers

Author

Modeste, M. ; Budimir, D. ; Moazzam, M.R. ; Aitchison, C.S.

Author_Institution

Dept. of Electr. Eng. & Electron., Brunel Univ., Uxbridge, UK

fYear

1999

fDate

21-24 Feb. 1999

Firstpage

53

Lastpage

56

Abstract

This paper presents a difference frequency technique for IMD improvement in power amplifiers. The technique is based on feeding the original two tone signals and a signal which frequency is the difference frequency of the fundamental signals in to the amplifier. Theory, simulation and practical measurement are presented. The result of the related experiment which gave a two tones measurement of more than 40 dB reduction in the level of the third order IMD is reported.

Keywords

intermodulation distortion; power MESFET; power amplifiers; radiofrequency amplifiers; semiconductor device measurement; MESFET; RF amplifiers; difference frequency technique; experiment; fundamental signals; intermodulation distortion; multicarrier IMD performance; power amplifiers; practical performance measurement; simulation; third order IMD; tone signals; Equations; Frequency; MESFETs; Performance analysis; Power amplifiers; Power generation; Radiofrequency amplifiers; Signal generators; Telecommunications; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Technologies for Wireless Applications, 1999. Digest. 1999 IEEE MTT-S Symposium on

Conference_Location

Vancouver, BC, Canada

Print_ISBN

0-7803-5152-5

Type

conf

DOI

10.1109/MTTTWA.1999.755128

Filename

755128