Journal of the Institute of Electronics Engineers of Korea SC (전자공학회논문지SC)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

Development of a Small Size Ceramic VCXO using the PECL and Inverted Mesa Type HFF

PECL과 역메사형 HFF를 이용한 소형세라믹 VCXO 개발

  • Yoon Dal-Han (Dept. of Electronic Engineering, Semyung University) ;
  • Lee Jae-Kyung (Graduate School of Electric and Electronic Engineering, Semyung University)
  • 윤달환 (세명대학교 전자공학과) ;
  • 이재경 (세명대학교 대학원 전기전자과)
  • Published : 2005.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, the multimedia and high speed telecommunication systems needs a high frequency and high stability oscillator. The VCXO(voltage controlled -crystal oscillator) have continually downsized to gratify a thin and small size of the telecommunication systems. In his paper, we have developed the small ceramic PECL(positive emitter-coupled logic) VCXO of the 5×7 mm size for gratifying the requested specifications from user, and then use the multilayer ceramic SMD(surface mounted device) package technology. The ceramic SMD PECL VCXO is operating at the 3.3 Voltage and have the frequency range of 120MHz～180MHz. The Q factor is over 5K and it has the low jitter characteristics of 3.5 ps and low phase noise.

통신시스템의 경박단소화와 고부가가치 기술 추세에 따라 전압제어 수정발진기(VCXO)도 소형화와 경향화를 향하고 있다. 기존의 VCXO는 9×14mm의 크기가 주류를 이루었으나 양의 에미터결합논리(PECL)와 적층 세라믹 SMD 패키지기술을 통하여 5×7 mm의 크기로 소형화한 VCXO를 개발한다. 이는 역메사형 HFF 수정설계 기술과 세라믹 SMD 공정선을 접목시키고 생산프로세스를 단축하는 효과도 얻는다.

Keywords

References

  1. www.vectron.com
  2. B. Leonard and K. Lear, 'Saw-based ECL VCO provides Low-Jitter Performance for SONET Applications,' Applied Microwave & Wireless, www.sawtech.com
  3. www.conexant.com
  4. R. W. Rhea, Oscillator Design and Computer Simulation, Noble, 1995
  5. (주)K.Q.T, 'Technical Information for Crystal Oscillator & VCXO,' 2002
  6. NPC Nippon Precision Circuits Inc., 330 MHz PECL-output Oscillators ICs, CF5034 Series
  7. U. L. Rohde, 'Nonlinear Effects in Oscillators and Synthesizers,' IEEE MTT-S, pp. 1-23, May 2001 https://doi.org/10.1109/MWSYM.2001.966987
  8. R. L. Filler, 'The Effect of Vibration on Frequency Standards and Clocks,' Proc. 35th Annu. Symp. Freq. Control, pp. 31-39, May 1981
  9. www.kqt.co.kr, www.temex.com
  10. D. R. Leeson, 'A Simple Model of Feedback Oscillator Noise Spectrum,' Proc. of the IEEE, pp. 329-330, April 1966 https://doi.org/10.1109/PROC.1966.4682
  11. W. Boyles, 'The Oscillator as a Reflection Amplifier : an Intuitive Approcah to Oscillator Design,' Microwave Journal, pp. 83-98, June 1986
  12. Conexant System, Inc., Phase Noise Application Note, 2001
  13. www.vectron.com, Jitter in Clock Sources