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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

A Study on the Control of Characteristic in the Analog Active Element for System Stabilization

시스템 안정화를 위한 아날로그 능동 소자의 특성 제어에 관한 연구

  • Published : 2000.06.01

⟨ Previous Next ⟩

Abstract

In this paper, a current comparative frequency automatic tuning circuit for the CMOS bandpass filter are designed with the new architecture. And also, when the designed circuit is compared the typical tuning circuit, it has very simple architecture that is composed of the current comparator and charge pump and operated in 2V power supply. The proposed tuning circuit automatically compensate the difference between the operating current of the integrator and the reference current which is specified. Using CMOS 0.25um parameter, a CMOS bandpass active filter with center frequency(f0= 100MHz) is designed, and according to the transister size the variation of the center frequency is simulated. As the HSPIC simulation results, the tuning operating of the proposed current comparative frequency automatic tuning circuit is verified.

Keywords

References

  1. IEEE J. Solid-State Circuits v.31 no.2 Low-Power CMOS Continuous-Time Filter R. H. Zele;D. J. Allstot
  2. 전자공학회 논문지 v.35 no.6 트랜스컨덕턴스(gm)를 이용한 전류모드 능동필터의 이득 및 주파수 제어 이근호;방준호;조성익;김동용
  3. IEEE J.Solid-State Circuits v.33 no.1 A ±1.5V, 4-MHz CMOS Continuous-Time Filter with a Single-Integrator Based Tuning C. S. Yoo;S. W. Lee;W. C. Kim
  4. Active Rc and Switched-Capacitor Design of Analog Filters;Passive R. Schaumann;K. R. Laker;M. S. Ghausi
  5. Solid-State Circuits v.31 no.10 A Si 1.8GHz RLC Filter with Tunable Center Frequency and Quality Factor S. Pipilos;Y. Tsividis;J. Fenk;Y. Papananos
  6. IEEE Press, Integrated Continuous-Time Filters Y. P. Tsividis;J. O. Voorman
  7. IEEE Proc. ISCAS The Problem of On-Chip Automatic Tuning in Continuous-Time Integrated Filters R. Schaumann;M. A. Tan
  8. IEEE Trans. Circuits Syst. II, v.44 no.3 A Linear Fully Balanced CMOS OTA for VHF Filtering Applications S. Szczepanski;J. Jakusz and Rof Schaumann
  9. Journal of Electrical Engineering & Information Science v.3 no.5 A 3V 10b 20MHz A/D Converter Based On a New CMOS On-Chip Current Reference Jung-Ryong Kim;Seung-Hoon Lee