Browse > Article

L-band Voltage Controlled Oscillator for Ultra-Wideband System Applications  

Koo Bonsan (서울시립대학교 전자전기컴퓨터공학부)
Shin Guem-Sik (서울시립대학교 전자전기컴퓨터공학부)
Jang Byung-Jun (한국정보통신연구진흥원)
Ryu Keun-Kwan (한밭대학교 정보통신공학부)
Lee Moon-Que (서울시립대학교 전자전기컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.15, no.9, 2004 , pp. 820-825 More about this Journal
Abstract
In this paper an octave tuning voltage controlled oscillator which is used in set-top TV tuner was designed. Oscillation frequency range is 0.9 GHz～2.2 GHz with 1.3 GHz bandwidth. By using 4 varactor diodes in base and emitter of transistor, wide-band tuning, sweep linearity and low phase noise could be achieved. Designed VCO requires a tuning voltage of 0 V ～ 20 V and DC consumption of 10 V and 15 mA. Designed VCO exhibits an output power of 5.3 dBm $\pm$1.1 dB and a phase noise below -94.8 dBc/Hz ＠ 10 kHz over the entire frequency range. The sweep linearity shows 65 MHz/V with a deviation of $\pm$10 MHz.
Keywords
VCO; Voltage Controlled Oscillator; Oscillator; Wideband Oscillator;
Citations & Related Records
연도 인용수 순위
  • Reference
1 남상욱, RF/Microwave 발진기 설계기술, 전파교육연구센터, 2003년
2 Yao-Huang Kao, Tzung-Hsiang Wu, 'Study of wide-band VCO at low microwave band', 1999 Asia Pacific Micrcmave Conference Digest, vol. 1, pp. 48-51
3 J. Park, C. Nguycn, 'An ultra-wideband microwave radar sensor for characterizing pavement subsurface', 2003 International Microwave Symposium Digest, vol. 3, pp. 1443-1446
4 J. C. Clifton, 'A design approach for broadband varactor-tuned oscillators', Multi-Octave Active and Passive Components and Antennas, IEE CoIIoquium on, May 1989
5 Allen Sweet, MIC & MMIC Amplifier and Oscillator Circuit Design, Artech House, pp. 188-189, 1990