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Analysis of Power Amplifier Nonlinear Response Based on Practical Circuit Parameters

회로 특성 파라미터에 근거한 전력 증폭기의 비선형 응답 특성

  • 박용국 (전자부품연구원 임베디드융합연구센터, 중앙대 전자전기공학부) ;
  • 김형석 (중앙대 전자전기공학부)
  • Received : 2012.04.04
  • Accepted : 2012.04.23
  • Published : 2012.05.01

Abstract

In this paper, a novel analysis on the nonlinear response of a power amplifier (PA) with the intermodulation distortion (IMD) asymmetry is proposed based on the mutislice behavioral model. The coefficients of the odd-order and even-order polynomial of that model are represented with the PA practical circuit parameters such as intercept points, gain and amplitudes of excitation inputs. We also develop the analytic expressions to distinguish baseband frequency effect from second harmonic effect on the IMD asymmetry. We also validate the derived analytic expressions through measurements.

Acknowledgement

Supported by : 한국에너지 기술평가원(KETEP)

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