A Study on a hybrid Voltage Controlled Oscillator for Personal Communication System

PCS용 하이브리드 전압제어 발진기에 관한 연구

  • 김영기 (안양대학교 정보통신공학과) ;
  • 김혁 (안양대학교 정보통신공학과) ;
  • 정의석 (안양대학교 정보통신공학과) ;
  • 백경식 (안양대학교 정보통신공학과) ;
  • 이재훈 (유정시스템)
  • Published : 1999.11.01

Abstract

This Paper presents the design, fabrication, analysis of the measured date of a voltage controlled oscillator(VCO) for the application of Personal Communication Systems. Main VCO circuit consists of self biased emitter resonating circuit with microstrip line resonator on FR4 epoxy substrate. A varactor diode is used for 90MHz frequency tuning with center frequency of 1635MHz Phase noise of -114.67㏈C/Hz at 100KHz off set has been achieved with 3.3 V supply. The size of the fabricated VCO circuit is 1.25 cm$\times$ 1.25 cm.

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