Journal of the Institute of Electronics Engineers of Korea SD (대한전자공학회논문지SD)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A CMOS Complex Filter with a New Automatic Tuning Method for PHS Application

PHS용 Automatic Tuning 방법을 이용한 Complex Filter

  • Ko, Dong-Hyun (Department of Electronic Engineering, Konkuk University) ;
  • Park, Do-Jin (Department of Electronic Engineering, Konkuk University) ;
  • Jung, Sung-Kyu (Department of Electronic Engineering, Konkuk University) ;
  • Pu, Young-Gun (Department of Electronic Engineering, Konkuk University) ;
  • Lee, Kang-Yoon (Department of Electronic Engineering, Konkuk University)
  • 고동현 (건국대학교 전자정보통신공학부) ;
  • 박도진 (건국대학교 전자정보통신공학부) ;
  • 정성규 (건국대학교 전자정보통신공학부) ;
  • 부영건 (건국대학교 전자정보통신공학부) ;
  • 이강윤 (건국대학교 전자정보통신공학부)
  • Published : 2007.10.25
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Abstract

This paper presents a baseband complex bandpass filter for PHS applications with a new automatic tuning method. The full-CMOS PHS transceiver is implemented by adopting the Low-IF architecture to overcome the DCoffset problems. To meet the Adjacent Channel Selectivity (ACS) performance, the 3rd-order Chebyshev complex bandpass filter is designed as the baseband channel-select filter. The new corner frequency tuning method is proposed to compensate the process variation. This method can reduce the noise level due to MOS switches. The filter was fabricated using a 0.35{\mu}m$ CMOS process, and the power consumption is 12mW.

이 논문에서는 PHS용 new automatic tuning 방법을 가지는 baseband complex bandpass filter를 제안하였다. DC offset 문제를 해결하기 위한 Low_IF 구조로 CMOS로만 집적된 PHS용 수신기를 설계하였다. ACS 특성을 만족시키기 위해 3차 Chebyshev complex filter를 이용하여 baseband를 선택할 수 있는 filter를 설계하였다. 새롭게 제시한 Comer frequency tuning 방법은 공정의 변화에 보상을 해주는 방식이고, MOS 스위치에 의한 노이즈 레벨을 감소시킨다. 이 filter는 CMOS 0.35um 공정이며, 전력소모는 12mW였다.

Keywords

References

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