대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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Feedforward 방식을 이용한 선형화기에 관한 연구

The Study on the Linearizer Using Feedforward Method

  • 정종한 (성균관대학교 전기,전자,컴퓨터공학부) ;
  • 박천석 (성균관대학교 전기,전자,컴퓨터공학부)
  • 발행 : 2000.11.01
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초록

In this paper, I compared some characteristics between HPA and LPA using Feedforward method. Feedforward method is known for best IMD correction. HPA generated 46.5㏈c at 45.5㏈m output power. But, using feedforward linearing method, I could improve IMD to 67.17㏈c at the same output power. IMD could be improved 20.67㏈ at 45.5㏈m output power. I measured average power, IMD, total current, and efficiency of two amplifier at many different power levels. I could get about 70d3c IMD using feedforward method.

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