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

The Institute of Electronics and Information Engineers (대한전자공학회)
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Research of PAE and linearity of Power amplifier Using EER and Metamaterial

EER 및 메타구조를 이용한 전력증폭기의 선형성 및 효율 개선

  • Jung, Du-Won (Department of Information and Telecommunication Engineering, Soongsil University) ;
  • Seo, Chul-Hun (Department of Information and Telecommunication Engineering, Soongsil University)
  • 정두원 (숭실대학교 정보통신공학부) ;
  • 서철헌 (숭실대학교 정보통신공학부)
  • Published : 2010.02.25
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Abstract

In this paper, the efficiency of power amplifier has been maximized by the application of EER structure, and the linearity has been improved by using metamaterial structure. This paper has proposed a design of power amplifier in class-F to get the PAE, and to control dynamic power using envelope detector. CRLH structure gets high-linearity by removing harmonics arisen from the mismatching of matching circuit. The PAE and the 3rd order IMD have been improved 5.93 %, 12.83 dB compared with those of conventional Class-F amplifier, respectively.

본 논문에서는 EER(Envelope Elimination and Restoration)구조를 응용하여 전력 증폭기의 효율을 극대화 하였으며, EER 구조의 취약점인 선형성을 메타구조를 이용하여 개선하였다. 고효율을 얻기 위해 class-F급 전력 증폭기를 설계하였으며 포락선 검파기를 이용하여 전력 증폭기의 구동 전력을 조절하였다. 또한, 정합 회로의 비정합에 의한 고조파 성분들을 대역통과 필터의 특성을 갖는 CRLH 메타구조를 이용하여 제거함으로써 높은 선형성을 얻었다. 본 논문에서 제안한 EER 구조를 응용한 전력 증폭기 구조는 일반 전력 증폭기에 비해 PAE(Power Added Efficiency)가 5.93 % 개선되었고, 3차 IMD가 12.83 dB 이상 개선되었다.

Keywords

References

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