위상 잡음 특성 개선을 위한 상호 결합 구조의 발진기 설계 및 제작

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

  • 최정완 (광운대학교 전파공학과) ;
  • 도지훈 (광운대학교 전파공학과) ;
  • 이형규 (광운대학교 전파공학과) ;
  • 강동진 (광운대학교 전파공학과) ;
  • 윤호석 (광운대학교 전파공학과) ;
  • 이경학 (광운대학교 전자통신공학과) ;
  • 홍의석 (광운대학교 전파공학과)
  • 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)
  • 발행 : 2006.11.30

초록

본 논문에서는 상호 결합 구조의 발진기를 이용하여 우수한 위상 잡음 특성을 얻었다. 상호 결합 구조의 발진기는 두 개의 발진기 출력 신호의 위상을 변화시켜 결합시키는 구조를 가졌으며, 유전율 2.5인 테프론 기판과 Surface Mount Gallium Arsenide FET 소자를 이용하여 제작하였다. 그리고 두 발진기가 9.3 GHz에서 상호 결합 위상 조건을 만족시키기 위해 바이어스만으로 조절할 수 있는 구조를 제안하였다. 4.4 V의 전압을 인가했을 때 37 mA의 전류가 흐르는 발진기는 -96.37 dBc(@100kHz offset frequency), -73.46 dBc(@10kHz offset frequency)의 위상잡음 특성을 나타내었고, 8.1 V를 인가했을 때 69 mA를 갖는 발진기의 출력과 상호 결합하여 -106.7 dEc(@100kHz offset frequency), -81 dBc(@10kHz offset frequency)의 우수한 위상 잡음 특성을 나타내었다.

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).

키워드

참고문헌

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