Dual Baseband Injection Method for Amplifier Linearization

Author

Chun, Pui Ching ; Chan, Chi Hou ; Xue, Quan

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

3

Abstract

We propose a simple and effective linearization technique based on low frequency signal injections. The improvement of the third-order intermodulation product (IMD3) performance is obtained by feeding the baseband signals, generated by the baseband generation circuit, to the amplifier through the input and output biasing circuitries. With the addition of the low-frequency signals at both input and output of the amplifier, 43 dB improvement on the third-order intermodulation distortion has been achieved at 1-dB compression point in the two-tone test.

Keywords

amplifiers; intermodulation distortion; linearisation techniques; amplifier linearization; baseband generation circuit; dual baseband injection method; third-order intermodulation distortion; two-tone test; Baseband; Circuits; Digital modulation; Frequency; Intermodulation distortion; Linearity; Linearization techniques; Microwave amplifiers; Microwave theory and techniques; Signal generators; Amplifiers; baseband injection; component; linearization;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554590

Filename

4554590