Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2003.07e
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- Pages.31-33
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- 2003
A Design of linearize for High Power Amplifier using RF communication
RF통신용 대전력증폭기의 선형화에 관한 연구
- Won, Yong-Kyu (Seoul Information Polytechnic College) ;
- Lee, Sang-Cheol (Dong Seoul College) ;
- Jung, Chan-Soo (Soongsil Univ.)
- Published : 2003.07.06
Abstract
Power amplifier linearity plays a major role in the design of RF communication systems. In this paper, predistortion type linearizer was designed an independently controllable AM/AM and AM/PM predistortion linearizers. This linearizer allows independent adjustment of the AM/AM and AM/PM curves by using two adjustable voltages to compensate the power amplifier non-linearities. The predistortion linearizer was improved the ACPR by 6dB with cdma2000 multi carrier signals. Applying this linearizer to two-tone 880MHz power amplifier, an improvement of adjacent channel leakage power up to 5dBm has been achieved.
Keywords