Title :
A polar function linearizer using even order harmonic signals
Author :
Kim, Ell-Kou ; Jeon, Ki-Kyung ; Kim, Young ; Yoon, Young-Chul
Author_Institution :
Kumoh Nat. Inst. of Technol., Gyungbuk
Abstract :
This paper proposes a polar function linearizer to reduce the spectral regrowth of radio frequency power amplifier using even order harmonic signals. An AM modulator, modulate fundamental signal with even order harmonic signals, makes inverse transfer function of power amplifier and controls amplitude and phase of them with polar function factors. As a result, this polar function linearizer is suppressed intermodulation distortion signals of power amplifier effectively.
Keywords :
amplitude modulation; intermodulation distortion; power amplifiers; radiofrequency amplifiers; transfer functions; AM modulator; even order harmonic signals; intermodulation distortion signals; inverse transfer function; polar function linearizer; radio frequency power amplifier; Amplitude modulation; High power amplifiers; Intermodulation distortion; Phase modulation; Power amplifiers; Power engineering and energy; Power system harmonics; Predistortion; Radiofrequency amplifiers; Signal generators; Amplitude modulation; even harmonic; intermodulation distortion; linearizer; power amplifier;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429556
