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

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

Spectral Analysis and Performance Evaluation of VCXO using the Jig System

지그시스템을 이용한 VCXO의 스펙트럼 분석 및 성능평가

  • Yoon Dal-Hwan (Department of Electronic Engineering, Semyung University)
  • Published : 2006.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

In his paper, we have developed the SMD(surface mounted device) type PECL(positive emitter-coupled logic) VCXO of the $5{\times}7mm$ size for gratifying the requested specifications and the multilayer ceramic SMD(surface mounted device) package technology. The VCXO wired with the PECL(positive emitter coupled logic) package take place a stray inductance and a parasitic capacitance by the length and the inner pattern of the VCXO and the amplitude attenuation and signal loss due to the reflection of power source and the noise component. We have developed the Zig system to analyze the precise spectrum and evaluate the performance. The basic operating voltage is the 3.3 V 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.

본 연구에서는 위상잡음과 지터(jitter) 특성을 개선한 $5mm{\times}7mm$ 크기의 적층 세라믹 SMD(surface mounted device)형 VCXO를 개발한다. PECL(positive emitter coupled logic) 칩패키지를 발진수정자에 결선한 VCXO는 그 길이 및 패키지 내부의 패턴 등에 의하여 부유인덕턴스 및 기생 커패시턴스가 발생하고, 전원의 반사 및 잡음 발생으로 출력신호의 진폭 감소 및 신호 손실이 발생하여 발진기 성능을 정상적으로 평가할 수 없다. 이러한 신호 손실 및 진폭감소를 방지하기 위해 지그(Jig) 시스템을 개발하고, 이를 통하여 발진기의 정확한 스펙트럼 분석 및 성능을 평가한다. 동작전원은 3.3 V, 주파수 범위 120-180 MHz 및 Q인수는 5K이다.

Keywords

References

  1. www.conexant.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. R. W. Rhea, Oscillator Design and Computer Simulation, Noble, 1995
  4. (주)K.Q.T, 'Technical Information for Crystal Oscillator & VCXO,' 2002
  5. NPC Nippon Precision Circuits Inc., 330 MHz PECL-output Oscillators ICs, CF5034 Series
  6. 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
  7. R. L. Filler, 'The Effect of Vibration on Frequency Standards and Clocks,' Proc. 35th Annu. Symp. Freq. Control, pp. 31-39, May 981
  8. 윤달환, 'PECL을 이용한 소형세라믹 VCXO 설계,' 한국통신학회 논문지, 제 30권, 제 2A호, pp. 107-114, 2005. 2
  9. www.kqt.co.kr
  10. www.temex.com
  11. 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
  12. W. Boyles, 'The Oscillator as a Reflection Amplifer : an Intuitive Approcah to Oscillator Design,' Microwave Journel, pp. 83-98, June 1986
  13. Conexant System, Inc., Phase Noise Application Note, 2001
  14. www.vectron.com, Jitter in Clock Sources