Title :
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
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;
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
DOI :
10.1109/APMC.2007.4554590
