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 of a Low Phase Noise Oscillator Using an Interdigital Hairpin Resonator for UTIS

인터디지털 헤어핀 공진기를 이용한 UTIS용 저 위상잡음 발진기 설계

  • 정태성 (광운대학교 전파공학과) ;
  • 이현욱 (광운대학교 전파공학과) ;
  • 권성수 (광운대학교 전파공학과) ;
  • 이명길 (광운대학교 전파공학과) ;
  • 이종철 (광운대학교 전자융합공학과) ;
  • 윤기철 (한국과학기술원 정보전자연구소)
  • Received : 2012.09.03
  • Accepted : 2012.10.08
  • Published : 2012.10.31
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Abstract

In this paper, a low phase noise oscillator is designed using an interdigital hairpin resonator for UTIS (Urban Traffic Information Systems). The interdigital hairpin resonator has several characteristics compared with a conventional hairpin resonator, which are 70% size reduction and improvement of harmonic characteristics. In addition, Q (Quality factor) of the interdigital hairpin resonator is about 132, which is suitable for the design of a low phase noise oscillator. The oscillator suggested in this paper shows the output power of 12 dBm and the phase noise characteristic of -100.8 dBc/Hz at 100 kHz offset frequency from the center frequency of 5.75 GHz. The phase noise is improved by about 12 dB compared with a conventional oscillator using an interdigital hairpin resonator.

본 논문에서는 인터디지털 헤어핀 공진기를 이용하여 UTIS (도시 교통 정보 시스템)에 사용 가능한 저 위상잡음 발진기를 설계 및 제작하였다. 인터디지털 헤어핀 공진기는 기존의 소형화된 헤어핀 공진기에 인터디지털을 접목시켜 공진기의 물리적인 크기를 기존 대비 약 70%로 축소시켰고, 고조파 특성을 향상시켰다. 또한 132 의 높은 Q 값은 저 위상잡음 발진기 설계에 적합하다. UTIS 용 저 위상잡음 발진기는 5.75 GHz에서 출력 12 dBm 의 전력과 100 kHz offset 에서 -100.8 dBc/Hz 의 낮은 위상잡음을 얻었다. 이는 기존의 헤어핀을 이용한 발진기에 비해 12 dB 정도의 개선을 보여준다.

Keywords

References

  1. B. Razavi, RF Microelectronics, Prentice Hall, 1997.
  2. P. G. Wilson and R. D. Carver, "An easy-to-use FET DRO design procedure suited to most CAD programs," IEEE MTT-S Int. Microwave Symp. Dig., pp. 1033-1036, June 1989.
  3. D. B. Leeson, "A simple model of feedback oscillator noise spectrum," Proc. IEEE, vol. 54, pp.329-339, Feb. 1966. https://doi.org/10.1109/PROC.1966.4682
  4. T. H. Lee and A. Hajimiri, "Oscillator-phase noise : A tutorial," IEEE J. Solid-State Circuits, vol. 35, no. 3, pp.326-336, March 2000. https://doi.org/10.1109/4.826814
  5. Y. T. Lee, J. S. Lin, C. S. Kim, D. Ahn, and S. W. Nam, "A compact-size microstrip spiral resonator and its application to microwave oscillator," IEEE Microwave and Wireless Components Lett., vol. 12, no. 10, pp.375-377, Oct. 2002. https://doi.org/10.1109/LMWC.2002.804556
  6. J. Zhu and Z. Feng, "Microstrip interdigital hairpin resonator with an optimal physical length," IEEE Microwave and Wireless Components Lett., vol. 16, no. 12, pp.672-674, Dec. 2006. https://doi.org/10.1109/LMWC.2006.885622
  7. H. Yabuki, M. Sagawa, and M. Makimoto, "Voltage controlled push-push oscillators using miniaturized hairpin resonators," IEEE MTT-S Int. Microwave Symp. Dig., pp.1175-1178, June 1994.
  8. 오현서, "ITS/텔레매틱스 주파수 현황," ETRI, 2011.
  9. M. Makimoto and S. Yamashita, "Bandpass filters using parallel coupled stripline stepped impedance resonators," IEEE Trans. Microwave Theory Tech, vol. 28, no. 12, pp.1413-1417, Dec. 1980. https://doi.org/10.1109/TMTT.1980.1130258
  10. S. Y. Lee, C. M. Taai, "New cross-coupled filter design using improved hairpin resonators," IEEE Trans. Microwave Theory Tech, vol. 48, no. 12, pp. 2482-2490, Dec. 2000. https://doi.org/10.1109/22.899002
  11. X. Y. She and Y. L. Chow, "Interdigital microstrip capacitor as a four-port network," Proc. Inst. Elect. Eng. H, vol. 113, pp.191-197, June 1986.
  12. A. P. S. Khanna and Y. Garault, "Determination of loaded, unloaded, and external quality factors of a dielectric reosonator coupled to a microstrip line," IEEE Trans. Microwave Theory Tech., vol. 31, no. 3, pp.261-264, Mar. 1983. https://doi.org/10.1109/TMTT.1983.1131473
  13. www.datasheetcatalog.com
  14. S. W. Seo, H. Y. Jung, J. H. Jeong, and C. H. Park, "Design of an X-band oscillator using novel miniaturized microstrip hairpin resonator," Proc. Asia-Pacific Microwave Conf., pp.1-4, Dec. 2007.
  15. H. W. Lee, K. C. Yoon, H. Nam, Y. S. Eo, and J. C. Lee, "A new K-band push-push VCO using a miniaturized hairpin resonator," Microwave and Optical Technol. Lett., vol. 52, no. 3, pp.699-701, Mar. 2010. https://doi.org/10.1002/mop.25007
  16. B. Shrestha, R. K. Maharjan, S. G. Cho, K. C. Yoon, and N. Y. Kim, "A low phase noise oscillator using spur line resonator for I-band application," Proc. Asia-Pacific Microwave Conf., pp.469-472, Dec. 2010.
  17. C. G. Hwang and N. H. Myung, "Novel phase noise reduction method for CPW based microwave oscillator utilizing a compact planar helical resoantor," Electronics and Communications Research Institute (ETRI) Journal, vol. 28, no. 4, pp.529-531, Mar. 2010.
  18. N. M. Mahyuddin, M. F. Ain, S. I. Hassan, and M. Sing, "Modeling of a 10 GHz dielectric resonator oscillation in ADS," Proc. Int. RF and Microwave Conf., pp.106-110, Sept. 2006.
  19. Y. T. Lee, J. S. Lim, C. S. Kim, D. Ahn, and S. W. Nam, "Compact size microstrip spiral resonator and its application to microwave oscillator," IEEE Microwave and Components Lett., vol. 12, no. 10, pp.375-377, Oct. 2002. https://doi.org/10.1109/LMWC.2002.804556
  20. 엄경환, "능동초고주파 회로설계입문," 홍릉과학출판사