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논문 기본 정보

자료유형
학술저널
저자정보
Bumman Kim (Pohang University of Science and Technology) Byungjoon Park (Pohang University of Science and Technology) Sangsu Jin (Pohang University of Science and Technology)
저널정보
한국전자파학회JEES Journal of Electromagnetic Engineering And Science Journal of Electromagnetic Engineering And Science Vol.15 No.2
발행연도
2015.4
수록면
63 - 75 (13page)

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초록· 키워드

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The CMOS power amplifier (PA) is a promising solution for highly-integrated transmitters in a single chip. However, the implementation of PAs using the CMOS process is a major challenge because of the inferior characteristics of CMOS devices. This paper focuses on improvements to the efficiency and linearity of CMOS PAs for modern wireless communication systems incorporating high peak-toaverage ratio signals. Additionally, an envelope tracking supply modulator is applied to the CMOS PA for further performance improvement. The first approach is enhancing the efficiency by waveform engineering. In the second approach, linearization using adaptive bias circuit and harmonic control for wideband signals is performed. In the third approach, a CMOS PA with dynamic auxiliary circuits is employed in an optimized envelope tracking (ET) operation. Using the proposed techniques, a fully integrated CMOS ET PA achieves competitive performance, suitable for employment in a real system.

목차

Abstract
Ⅰ. INTRODUCTION
Ⅱ. HIGH-EFFICIENCY DIFFERENTIAL CASCODE CMOS PA DESIGN
Ⅲ. CMOS PA WITH LINEARIZATION
IV. CMOS ENVELOPE TRACKING PA WITH CONTROL
Ⅴ. CONCLUSIONS
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