Journal of electromagnetic engineering and science

  • 제7권2호
  • /
  • Pages.64-68
  • /
  • 2007
  • /
  • 2671-7255(pISSN)
  • /
  • 2671-7263(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지
DOI QR코드

DOI QR Code

An InGaP/GaAs HBT Based Differential Colpitts VCO with Low Phase Noise

  • Shrestha, Bhanu (Department of Electronic Engineering, Graduate School of Kwangwoon University) ;
  • Kim, Nam-Young (Department of Electronic Engineering, Graduate School of Kwangwoon University)
  • 발행 : 2007.06.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

An InGaP/GaAs HBT based differential Colpitts voltage control oscillator(VCO) is presented in this paper. In the VCO core, two switching transistors are introduced to steer the core bias current to save power. An LC tank with an inductor quality factor(Q) of 11.4 is used to generate oscillation frequency. It has a superior phase noise characteristics of -130.12 dBc/Hz and -105.3 at 1 MHz and 100 kHz frequency offsets respectively from the carrier frequency(1.566 GHz) when supplied with a control voltage of 0 volt. It dissipates output power of -5.3 dBm. Two pairs of on-chip base collector (BC) diodes are used in the tank circuit to increase the VCO tuning range(168 MHz). This VCO occupies the area of $1.070{\times}0.90mm^2$ including buffer and pads.

키워드

참고문헌

  1. B. Shrestha, N. Y. Kim, 'Double cross coupled differential VCO with low phase noise using InGaP/ GaAs HBT technology', IEEE Radio Freq. Integrated Circ. (RFIC) Symp., pp. 599-602, Jun. 2007
  2. X. Wang, A. Fard, and P. Andreani, 'Phase noise analysis and design of a 3-GHz biopolar differential colpitts VCO', Proceedings of ESSCIRC, Grenoble, France, 2005
  3. A. Hajimiri, T. H. Lee, 'Oscillator phase noise: A tutorial', IEEE J. Solid State Circuits, vol. 35, no. 2, pp. 326-336, Mar. 2000 https://doi.org/10.1109/4.826814
  4. R. Aparico, A. Hajimiri, 'A noise shifting differential colpitts VCO', in IEEE, J. Solid-State Circuits, vol. 37, pp. 1728-1736, Dec. 2002 https://doi.org/10.1109/JSSC.2002.804354
  5. D. Ham, A. Hajimiri, 'Concepts and methods in optimization of integrated LC VCOs', in IEEE, J. Solid-State Circuits, vol. 36, pp. 896-909, Jun. 2001 https://doi.org/10.1109/4.924852
  6. B. Shrestha, Garry P. Kennedy, and N. Y. Kim, 'The design of an InGaP/GaAs HBT differential colpitts VCO', MINT-MIS 2007, Proceedings, pp. 27-30, Feb. 2007
  7. W. Michielsen, L. R. Zheng, et al., 'Design considerations for a 2.4 GHz differential Colpitts oscillators', in Proc. NORCHIP, pp. 232-235, Nov. 2003
  8. X. Wang, A. Fard, and P. Andreani, 'Phase noise analysis and design of a 3-GHz biopolar differential colpitts VCO', Proceedings of ESSCIRC, Grenoble, France, 2005
  9. Xiaoyong li, Sudip Shekhar et al., 'Gm-boosted common gate LNA and differential colpitts VCO/QVCO in 0.18-m CMOS', IEEE Journal of Solid-State Circuit JSSC, vol. 40, no. 12, Dec. 2005
  10. Jae-Ho Yoon, Bhanu Shrestha, et al., 'Optimized phase noise of LC VCO using an asymmetrical inductance tank', Journal of the Korea Electromagnetic Engineering Society, vol. 6, no. 1, pp. 30-35 Mar. 2006
  11. Jian-Jun, Dong-Xu Wang et al., 'AV 1.8 GHz low power differential colpitts VCO', ICSICT-2006, pp. 1661-1663, 2006