The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Linearization Up to the Saturation Region of Poller Amplifiers

전력증폭기 포화영역까지의 선형화

  • 민이규 (한양대학교 전자전기컴퓨터공학부) ;
  • 이상설 (한양대학교 전자전기컴퓨터공학부)
  • Published : 2002.02.01
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Abstract

This paper presents a linearization technique up to the saturation region of power amplifiers. The predistorter gain polynomials which have optimum coefficients are introduced. Power amplifiers are most efficient when operated near the saturation region. Compensating the amplifier nonlinearities with these predistorter gain polynomials, the efficiency of the amplifier can be maximized. Simulation results demonstrate that the adjacent channel power ratio (ACPR) is improves by about 63 ㏈ at the band edge. The convergence and reconvergence characteristics of the linearizer are also satisfactory.

전력증폭기 포화영역가지의 선형화 방법을 제안한다. 최적화된 계수론 갖는 전치왜곡기 이득 다항식을 도입한다. 전력증폭기는 포화영역 근처에서 동작할 때 가장 높은 효율을 가진다. 이 전치왜곡기 이득 다항식을 이용하여 전력증폭기의 비선형성을 보상함으로써 증폭기의 효율을 극대화 할 수 있다. 씨뮬레이션 결과 ACPR (Adjacent Channel Power Ratio)이 대역 가장자리에서 약 63 dB 개선된다. 선형화기의 수렴 및 재수렴 특성 역시 만족스러운 성능을 보인다.

Keywords

References

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