Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Research on PAE and Linearity of Power Amplifier Using Adaptive Bias and PBG Structure

적응형 바이어스와 PBG를 이용한 전력증폭기 전력효율과 선형성 개선에 관한 연구

  • Cho Sunghee (School of Electronic Engineering Soongsil University) ;
  • Seo Chulhun (School of Electronic Engineering Soongsil University)
  • 조성희 (숭실대학교 정보통신공학부) ;
  • 서철헌 (숭실대학교 정보통신공학부)
  • Published : 2005.02.01
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Abstract

In this paper, adaptive bias circuit and PBG structure have been employed to suppress IMD and improve PAE (Power Added Efficiency) of the power amplifier. It is controlling the gate 'dc' bias voltage with the envelope of the input RF signal. and The PBG structure has been employed on the output port of power amplifier . The proposed power amplifier using adaptive bias circuit and PBG has been improved the IMG by 3 dBc, and the average PAE by $35.54\%$, respectively.

본 논문에서는 증폭기의 구동 전력을 조절하는 회로와 PBG 구조를 이용하여 전력 증폭기의 전력효율의 증가와 혼변조 왜곡 성분을 감소하게 하였다. 입력 RF 신호의 크기에 따라서 게이트의 DC 전압을 조절하였고, 전력 증폭기의 출력 정합회로에 PBG를 추가하였다. 본 논문에서 제안한 전력 증폭기의 경우 기존의 전력 증폭기와 비교 하였을 때 혼변조 왜곡성분은 3dBc 개선되었고, 평균 전력효율은 $35.54\%$ 개선되었다.

Keywords

References

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