Design and Implementation of the Mutually Coupled Structure Oscillators for Improved Phase-Noise Characteristics

위상 잡음 특성 개선을 위한 상호 결합 구조의 발진기 설계 및 제작

  • Choi, Jeong-Wan (Department of Transmission Engineering, Kwangwoon University) ;
  • Do, Ji-Hoon (Department of Transmission Engineering, Kwangwoon University) ;
  • Lee, Hyung-Kyu (Department of Transmission Engineering, Kwangwoon University) ;
  • Kang, Dong-Jin (Department of Transmission Engineering, Kwangwoon University) ;
  • Yoon, Ho-Seok (Department of Transmission Engineering, Kwangwoon University) ;
  • Lee, Kyung-Hak (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Hong, Ui-Seok (Department of Transmission Engineering, Kwangwoon University)
  • 최정완 (광운대학교 전파공학과) ;
  • 도지훈 (광운대학교 전파공학과) ;
  • 이형규 (광운대학교 전파공학과) ;
  • 강동진 (광운대학교 전파공학과) ;
  • 윤호석 (광운대학교 전파공학과) ;
  • 이경학 (광운대학교 전자통신공학과) ;
  • 홍의석 (광운대학교 전파공학과)
  • Published : 2006.11.30

Abstract

In this paper, mutually coupled oscillator is employed to improve phase noise. Mutually coupled structure oscillator couples two oscillator's phase shifted output signals, that is fabricated using teflon board which has dielectric constant of 2.5 and Surface Mount Gallium Arsenide FET devices. And this paper proposed the structure to bias adjustment for the phase condition of mutually couples. When one oscillator has bias point of 4.4 V and 37 mA, it's output signal has phase noise characteristic of -96.37 dBc(@9305 MHz, offset frequency 100 KHz), -73.46 dBc(10 kHz). and After it's output signal mutually coupled the other's output signal that has bias point of 8.1 V and 69 mA, it has superior phase noise characteristic of -106.7 dBc(@9305 MHz, offset frequency 100 kHz), -81 dBc(10 kHz).

Keywords

Mutually Coupled Structure Oscillator;Phase Noise

References

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