The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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Design and Implementation of a VCO Employing Harmonic Oscillators and a Impedance Inverter

임피던스 인버터와 고조파 발진기를 이용한 VCO 설계 및 제작

  • 장정석 (광운대학교 전파 공학과) ;
  • 정연홍 (광운대학교 전파 공학과) ;
  • 도지훈 (광운대학교 전파 공학과) ;
  • 김대웅 (광운대학교 전파 공학과) ;
  • 홍의석 (광운대학교 전파 공학과)
  • Published : 2009.10.30
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Abstract

In this paper, improved VCO(voltage controlled oscillator) with push-push structure and high impedance-inverter is designed and implemented. Two harmonic oscillators are combined into push-push structure. As a result, the fundamental suppression and the output power have been progressed. For the improved coupling characteristics between hair-pin resonator and two parallel microstrip line using high impedance inverter, the phase noise has been suppressed.

본 논문에서는 Push-Push 구조와 고임피던스 인버터를 이용하여 개선된 VCO를 설계 및 제작하였다. 두 개의 고조파 발진기를 Push-Push 구조로 결합시킴으로써 기본주파수 억압특성을 개선하였으며, 고조파 출력을 향상시켰다. 이에 따른 위상잡음 증가는 고임피던스 인버터를 이용하여 공진기와 병렬선로 사이의 결합특성 개선을 통하여 억제하였다.

Keywords

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