Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design and Fabrication of Linear Power Amplifier for IMT-2000 Using FeedForward Method Combined Predistortion Method

전치왜곡 방식이 결합된 FeedForward 방식을 이용한 IMT-2000용 선형 전력 증폭기의 설계 및 제작

  • 김경호 (경북대학교 전자전기 공학부) ;
  • 정재호 (경북대학교 전자전기 공학부) ;
  • 김성민 (경북대학교 전자전기 공학부) ;
  • 최현철 (경북대학교 전자전기 공학부)
  • Published : 2000.11.01
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Abstract

Advanced FeedForward method use Predistortion method and FeedForward method simultaneously. This method better than original Feedforward method in linearity and supply smaller power to pre-power amplifier than different methods, and then it has higher power efficiency and better linearity than original Feedforward method. A linear power amplifier using Advanced feedforward method is designed and fabricated for IMT-2000 transmission system (2110㎒ -2170M㎓). This amplifier's power gain is about 40㏈ and it's 3-rd IMD(Intermodulation distortion) are smaller than about -55㏈c(@ 10MHz).

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