The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Development of Small-sized Ceramic VCXO using the PECL

PECL을 이용한 소형 세라믹 VCXO 개발

  • 이재경 (세명대학교 전자공학과 DSP연구실) ;
  • 윤달환 (세명대학교 전자공학과 DSP연구실)
  • Published : 2005.02.28
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Abstract

In this paper, we have developed the miniature ceramic 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 ceramic SMD PECL VCXO designed by the inverted Mesa type HFF 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.

본 논문에서는 통신소자의 경박 단소화 추세에 따라 적층 세라믹 SMD(surface mounted device) 패키지기술을 통하여 소형화한 $5{\times}7mm$의 크기의 VCXO를 개발한다. 이때 안정된 입력신호를 공급하기 위하여 양의 이미터결합논리(PECL)를 이용하고, 역메사형 HFF(high frequency fundamental) 기법을 이용하여 제작한 수정소자로 IC에 설계함으로써 동작전압은 3.3 V, 저전력하에서 120MHz-180MHz 범위의 주파수에서 발진하며, Q인자는 5 K이상, 3.5 ps rms의 낮은 지터(Jitter)와 위상잡음 특성 및 일정기간의 경화실험에서도 안정된 출력특성을 보인다.

Keywords

References

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