Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2005.07b
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- Pages.1506-1508
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- 2005
A study on the improvement in Q-factor chracteristics of VCO resonance part
VCO 공진부의 Q-factor 특성향상에 관한 연구
- Lee, Hyun-Jong (Electric & Magnetic Devices Group, Korea Electrotechnology Research Institute) ;
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Kim, In-Sung
(Electric & Magnetic Devices Group, Korea Electrotechnology Research Institute) ;
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Min, Bok-Gi
(Electric & Magnetic Devices Group, Korea Electrotechnology Research Institute) ;
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Song, Jae-Sung
(Electric & Magnetic Devices Group, Korea Electrotechnology Research Institute)
- 이현종 (한국전기연구원 전자기연구소자그룹) ;
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김인성
(한국전기연구원 전자기연구소자그룹) ;
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민복기
(한국전기연구원 전자기연구소자그룹) ;
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송재성
(한국전기연구원 전자기연구소자그룹)
- Published : 2005.07.18
Abstract
VCO(voltage controlled oscillator) using mobile communication device decides direct characteristics as parts that affect important in stable oscillation and distortion characteristics of system. VCO used 900 MHz band was designed by the transformation of Colpitts circuit form use ADS that consider Q-factor to minimize phase noise. VCO manufactured together evaluation board and voltage control oscillator to FR-4 PCB. VCO experimented chracteristics after control through resonance department tuning. In our research, the designed VCO has 15.5 dBm output level at the bias condition of 6V and 10mA and the operating frequency range of 917 MHz
Keywords