Browse > Article

The Design of the Linear Power Amplifier using Analog Feedforward Linearizer for IMT-2000 Band  

Park, Ung-Hui (한국전자통신연구원 무선방송연구소 전파기반부)
Lee, Gyeong-Hui (한국전자통신연구원 무선방송연구소 전파기반부)
Gang, Sang-Gi (한국전자통신연구원 무선방송연구소 전파기반부)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.39, no.6, 2002 , pp. 285-291 More about this Journal
Abstract
In this paper, the LPA(Linear Power Amplifier) using new analog feedforward linearizer for IMT-2000 frequency band(2110MHz∼2170MHz) is proposed and fabricated. The designed analog feedforward linearizer system possessing the characteristics of stable operation for input power variation is simple structure and small size. When two-tones in IMT-2000 frequency band are applied to an amplifier, this LPA have the average output power is about 30W and the IMD value is below about 60dBc without correcting the circuit. In camparision with an amplifier without feedforward system at the same output power, the supposed analog feedforward linear amplifier posseses improved the IMD characteristics of over 23dB.
Keywords
Linearizer, Feedforward, power Amplifier;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Hsieh C, Chan S., 'A S-band high power feedback amplifier', Proceeding of IEEE MTTS, pp.182-184, 1997
2 정요채, 혼변조 신호의 개별 차수 조정 Predistortion 선형화기 설계, 박사학위 논문, 서강대학교, 1995
3 K. yamauchi, K. Morl, M. Nakayama, Y. Mitsui, T. Takagi, 'A Microwave Miniaurized Linearizer Using a Parallel Diode', IEEE MIT-S Digest, pp. 1199-1202, 1997   DOI
4 Nick Pothecary, Feedforward Linear Power Amplifier, Artech House, 1999
5 P. B. Kenington, High-Linearity RF Ampli-fier Design, Artech House, 2000
6 남상대, 박응희, 장익수, 윤상원,'Feed-forward 선형화기 시스템의 오차 추출 루프를 위한 크기와 위상 제어 회로의 설계', 대한 전자공학회지, 제 37권 TC편, 제2호, pp. 91-97, 2. 2000   과학기술학회마을