Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design of Wide-band VCO with Improved Frequency Gain Characteristics

개선된 주파수 이득 특성을 갖는 광대역 전압 제어 발진기의 설계

  • Ahn, Tae-Won (School of Electrical Engineering, Dongyang Technical College) ;
  • Lee, Won-Seok (School of Electrical Engineering, Dongyang Technical College) ;
  • Moon, Yong (School of Infocom. & Electronic Engineering, Soongsil University)
  • 안태원 (동양공업 전문대학 전기전자통신공학부) ;
  • 이원석 (동양공업 전문대학 전기전자통신공학부) ;
  • 문용 (숭실대학교 정보통신전자공학부)
  • Published : 2007.07.11
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Abstract

A general method for both reduced VCO gain ($K_{vco}$) and wide frequency band is to use the switched-capacitor bank LC VCO. However, $K_{vco}$ can fluctuate widely in the wide oscillation frequency range of the VCO. In this paper, a design of wide-band VCO with improved frequency-voltage gain performance is presented. Optimized multiple varacter switching technique is used for reducing its frequency-voltage gain variation.

Keywords