Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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New Analog Predistorter for Independent Control of IM3 Components

3차 상호변조왜곡성분의 독립적인 조절을 위한 새로운 전치왜곡기

  • Lee, Yong-Sub (Department of Electronic and Electrical Engineering Pohang University of Science and Technology) ;
  • Lee, Mun-Woo (Department of Electronic and Electrical Engineering Pohang University of Science and Technology) ;
  • Jung, Sung-Woo (Department of Electronic and Electrical Engineering Pohang University of Science and Technology) ;
  • Jeong, Yoon-Ha (Department of Electronic and Electrical Engineering Pohang University of Science and Technology)
  • 이용섭 (포항공과대학교 전자전기공학과) ;
  • 이문우 (포항공과대학교 전자전기공학과) ;
  • 정성우 (포항공과대학교 전자전기공학과) ;
  • 정윤하 (포항공과대학교 전자전기공학과)
  • Published : 2007.07.11
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Abstract

Two analog predsitorters (PDs) using the mixing operation are proposed to compensate for the memory effects of the power amplifier and then significantly cancel IM3 components with the independent control of IM3 terms. In the first PD, IM3 terms are generated by using mixing operation of low frequency terms. In the second PD, the double mixing operation of the fundamental components is used. For a two-tone signal with 20-MHz tone spacing, the notable IM3 suppression is achieved over a whole output power range.

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