대한전자공학회논문지SD (Journal of the Institute of Electronics Engineers of Korea SD)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

UWB 주파수 합성기용 1 GHz 광 대역 시그마 델타 성긴 튜닝형 전압 제어 발진기

A 1 GHz Tuning range VCO with a Sigma-Delta Modulator for UWB Frequency Synthesizer

  • 남철 (건국대학교 전자정보통신공학부) ;
  • 박안수 (건국대학교 전자정보통신공학부) ;
  • 박준성 (건국대학교 전자정보통신공학부) ;
  • 부영건 (건국대학교 전자정보통신공학부) ;
  • 허정 (건국대학교 전자정보통신공학부) ;
  • 이강윤 (건국대학교 전자정보통신공학부)
  • Nam, Chul (Department of Electronic Engineering, Konkuk University) ;
  • Park, An-Su (Department of Electronic Engineering, Konkuk University) ;
  • Park, Joon-Sung (Department of Electronic Engineering, Konkuk University) ;
  • Pu, Young-Gun (Department of Electronic Engineering, Konkuk University) ;
  • Hur, Jeong (Department of Electronic Engineering, Konkuk University) ;
  • Lee, Kang-Yoon (Department of Electronic Engineering, Konkuk University)
  • 투고 : 2009.12.16
  • 심사 : 2010.07.19
  • 발행 : 2010.08.25
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초록

본 논문은 UWB주파수 합성기용 광대역 전압 제어 발진기로 시그마-델타 모듈레이션을 이용하여 미세한 성긴 튜닝을 구현하였다. 제안된 성긴 튜닝 방법은 위상 잡음 성능의 저하 없이 작은 유효 주파수 해상도를 제공한다. 3단계의 성긴 튜닝구조로 전압제어 발진기는 광대역과 미세 튜닝 단계를 동시에 구현한다. 본 전압 제어기를 포함한 주파수 합성기는 0.13 ${\mu}m$ CMOS공정으로 구현되었고, 5.8-6.8 GHz의 대역에 3.9 kHz의 유효 주파수 해상도를 갖는다. 측정된 위상 잡음은 1 MHz 오프셋에서 -108 dBc/Hz이고, 5.9 mW 전력 소모로 16.8 %의 튜닝 범위를 갖으며, 튜닝 범위를 갖는 Figure-of-merit(FoM)은 -181.58 dBc/Hz이다.

This paper presents a wide range VCO with fine coarse tuning step using a sigma-delta modulation technique for UWB frequency synthesizer. The proposed coarse tuning scheme provides the low effective frequency resolution without any degradation of phase noise performance. With three steps coarse tuning, the VCO has wide tuning range and fine tuning step simultaneously. The frequency synthesizer with VCO was implemented with 0.13 ${\mu}m$ CMOS technology. The tuning range of the VCO is 5.8 GHz~6.8 GHz with the effective frequency resolution of 3.9 kHz. It achieves the measured phase noise of -108 dBc/Hz at 1 MHz offset and a tuning range 16.8 % with 5.9 mW power. The figure-of-merit with the tuning range is -181.5 dBc/Hz.

키워드

참고문헌

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