Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
권호 표지
DOI QR코드

DOI QR Code

A Multi-channel CMOS Low-voltage Filter with Newly Current-mode Integrator

새로운 전류모드 적분기를 갖는 다중 채널 CMOS 저전압 전류모드 필터 설계

  • Lee, Woo-Choun (Dept. of IT Applied System Engineering. Chonbuk National University) ;
  • Bang, Jun-Ho (Dept. of IT Applied System Engineering. Chonbuk National University)
  • 이우춘 (전북대학교 IT응용시스템공학과) ;
  • 방준호 (전북대학교 IT응용시스템공학과)
  • Published : 2009.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

A CMOS multi-channel low-voltage current mode filter circuit is designed. The designed current-mode filter is based on linear cascode current-mode integrator that is newly proposed in this paper. When it is compared with that of the typical current-mirror type current-mode integrator, the proposed linear cascode current-mode integrator achieves high current gain and unity gain frequency. The designed filter is composed with 5th Chebyshev function and converted to active version by signal flow graph method. We verified that the designed filter can be applied to three-channel basedband, bluetooth, DECT and WCDMA with 0.51MHz~7.03MHz frequency tuning range by Hspice simulation using 1.8V-$0.18{\mu}m$ CMOS technology.

본 논문에서는 새롭게 제안한 선형 캐스코드 전류모드 적분기를 기본으로 구성된 다중채널 CMOS 저전압 전류모드 필터를 설계하였다. 제안된 전류모드 적분기는 기존의 전류미러형 전류모드 적분기 비해서 높은 전류이득 및 단위이득 주파수 특성을 얻을 수 있다. 5차 체비셰프 함수로써 구성한 필터는 신호흐름선도(SFG)기법에 의하여 능동필터로 변환되었다. 1.8V-$0.18{\mu}m$ CMOS 공정파라미터를 사용한 HSPICE 시뮬레이션 결과, 설계된 필터는 0.51MHz에서 7.03MHz대역까지의 주파수 조정범위를 가지며 Bluetooth, DECT, WCDMA의 3채널의 기저대역에서 사용할 수 있음을 확인하였다.

Keywords

References

  1. Hassan O. Elwan, Mohammed Iqbal Younus, Hussein A. Al-Zaher, and Mohammed Ismail, "A Buffer-Based Baseband Analog Front End for CMOS Bluetooth Receivers," IEEE Trans. on Circuits and Systems, Vol. 49, No. 8, pp. 545-554, Aug. 2002. https://doi.org/10.1109/TCSII.2002.805629
  2. R. G. Jensen, K. T. Christensen, and E. Bruun, "Programmable Baseband Filter for Multistandard Mobile Phones," Analog Integrated Circuit and Signal Processing, Vol. 34, No. 1, pp. 49-57, Jan. 2003. https://doi.org/10.1023/A:1020386317414
  3. S. K. Reynolds, B. A. Floyd, T. Beukema, T. Zwick, U. Pfeiffer and H. Ainspan, "A Direct-Conversion Receiver IC for WCDMA Mobile Systems," IEEE J. Solid-State Circuits, Vol. 38, No. 9, pp. 1555-1560, Sep. 2003. https://doi.org/10.1109/JSSC.2003.815914
  4. K. Y. Lee, S. W. Lee, Y. D. Koo, H. K. Huh, H. Y. Nam, J. W. Lee, J. B. Park, K. H. Lee, D. K. Jeong and W. C. Kim, "Full-CMOS 2-GHz WCDMA Direct Conversion Transmitter and Receiver," IEEE J. Solid-State Circuits, Vol. 38, No. 1, pp. 43-53, Jan. 2003. https://doi.org/10.1109/JSSC.2002.806280
  5. Z. Yang, T. Hinck, H. I. Cohen and A. E. Hubbard, "Current-Mode Integrator for Voltage-Controlled Low Frequency Continuous-Time Filters," Electronics Letters, Vol. 39, No. 12, pp. 883-884, Jun. 2003. https://doi.org/10.1049/el:20030580
  6. Y. S. Hwang, J. H. Lai and M. C. Chang, "Realization of Transistor-Only High-Order Current-Mode Filters," IEICE Trans. on Fundamentals, Vol. E88-A, No. 2, pp. 538-540, Feb. 2005. https://doi.org/10.1093/ietfec/E88-A.2.538
  7. S. S. Lee, R. H. Zele, D. J. Allstot and G. Liang, "A Continuous-Time Current-Mode Integrator," IEEE Trans. on Circuits and Systems, Vol. 38, No. 10, pp. 1236-1238, Oct. 1991. https://doi.org/10.1109/31.97547
  8. S. S. Lee, R. H. Zele, D. J. Allstot and G. Liang, "CMOS Continuous-Time Current-Mode Filters for High-Frequency Applications," IEEE J. Solid-State Circuits, Vol. 28, No. 3, pp. 323-329, Mar. 1993. https://doi.org/10.1109/4.209999
  9. R. H. Zele and D. J. Allstot, "Low-Power CMOS Continuous-Time Filters," IEEE J. Solid-State Circuits, Vol. 31, No. 2, pp. 157-168, Feb. 1996. https://doi.org/10.1109/4.487992
  10. 김병욱, 방준호, 조성익, 최석우, 김동용, "WCDMA 베이스밴드단전류모드 아날로그 필터 설계," 대한전기학회논문지, 57권, 3호, pp. 255-259, Sep. 2008.
  11. 김병욱, 방준호, 조성익, 최석우, 김동용, "전류모드 적분기를 이용한 듀얼 모드 기저대역 필터 설계," 대한전기학회논문지, 57권, 3호, pp. 260-264, Sep. 2008.
  12. C. M. Chang, B. M. Al-Hashimi and J. N Ross, "Unified active filter biquad structures," IEE Proc. Circuits, Devices Syst., Vol. 151, No. 4, pp. 273-277. Aug. 2004. https://doi.org/10.1049/ip-cds:20040132
  13. 정택원, 방준호, "자기바이어스 트랜스컨덕터를 이용한 RFID 리더용 CMOS 저전압 필터", 한국산학기술학회논문지, 10권, 7호, pp.1526- 1531, Jul. 2009 https://doi.org/10.5762/KAIS.2009.10.7.1526
  14. K. Wing-Hung, "Signal Flow Graph Analysis of Feedback Amplifiers," IEEE Trans. on Circuits and Systems, Vol. 47, No. 6, pp. 926-933, Jun. 2000. https://doi.org/10.1109/81.852948