전자공학회논문지 (Journal of the Institute of Electronics and Information Engineers)

대한전자공학회 (The Institute of Electronics and Information Engineers)
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Ku-밴드 광대역 CMOS 전압 제어 발진기

A Fully Integrated Ku-band CMOS VCO with Wide Frequency Tuning

  • 김영기 (안양대학교 정보통신공학과) ;
  • 황재연 (안양대학교 정보통신공학과) ;
  • 윤종덕 (안양대학교 정보통신공학과)
  • Kim, Young Gi (Department of Information and Communications, Anyang University) ;
  • Hwang, Jae Yeon (Department of Information and Communications, Anyang University) ;
  • Yoon, Jong Deok (Department of Information and Communications, Anyang University)
  • 투고 : 2014.08.30
  • 심사 : 2014.12.01
  • 발행 : 2014.12.25
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초록

본 논문에서는 상호 교차결합 차동(complementary cross-coupled differential)구조를 기반으로 조절 주파수 범위가 넓은 광대역 Ku-band 전압 제어 발진기를 $0.18-{\mu}m$ CMOS 공정 기술을 바탕으로 설계 후 제작하여 주파수 조절 범위와 출력 스펙트럼, 위상잡음 등을 측정하여 분석하였다. PMOS와 NMOS가 캐스코드의 push-pull 구조로 연결되어 상호 교차된 차동발진기 구조에 주파수 제어용으로 MOS varactor를 사용한 본 전압 제어 발진기는 발진주파수 14.5GHz의 20%인 2.24GHz 의 매우 넓은 광대역의 주파수 제어를 달성하였음을 측정으로 확인하였다. 3.3V 전원으로부터 18mA의 DC 전류를 공급하였을 때 발진 출력전력은 -1.66dBm으로 측정되었으며, 5V 전원으로부터 47mA의 DC 전류를 공급하였을 때 발진 출력전력은 0.84dBm으로 측정되었다. 위상잡음은 100kHz offset 주파수에서 -74.5dBc/Hz로 측정되었다. 본 논문의 칩은 패드를 포함하여 $1.02mm{\times}0.66mm$의 면적을 갖는다.

A ku-band complementary cross-coupled differential voltage controlled oscillator is designed, measured and fabricated using $0.18-{\mu}m$ CMOS technology. A 2.4GHz of very wide frequency tuning at oscillating frequency of 14.5GHz is achieved with presented circuit topology and MOS varactors. Measurement results show -1.66dBm output power with 18mA DC current drive from 3.3V power supply. When 5V is applied, the output power is increased to 0.84dBm with 47mA DC current. -74.5dBc/Hz phase noise at 100kHz offset is measured. The die area is $1.02mm{\times}0.66mm$.

키워드

참고문헌

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