Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Improvement of the Characteristics of Feedforward Power Amplifier using Negative Feedback method

Feedback을 첨가한 IMT-2000용 l0W급 Feedforward 선형 전력 증폭기의 설계 및 제작

  • 류병하 (경북대학교 전자전기 공학부) ;
  • 장중호 ((주) 흥창) ;
  • 김성민 (경북대학교 전자전기 공학부) ;
  • 최현철 (경북대학교 전자전기 공학부)
  • Published : 2000.11.01
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Abstract

In this paper, A Feedforward Linear Power Amplifier for IMT-2000 which IMD characteristics was improved was designed and fabricated. To improve the main power amplifier IMD characteristics, the Feedback loop was added to basic Feedforward Power Amplifier structure. Therefore, the output power of error amplifier can be reduced, and it is easy to control the linearization circuit to cancel total IMD. The designed power amplifier represented the 40㏈m(l0W) output power and -55㏈C 3rd IMD at Center frequency 2.14㎓ (@5㎒).

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