Title :
A switched-current modified bilinear integrator and its applications
Author :
Liu, Shen-Iuan ; Chen, Chih-Hsien ; Tsao, Hen-Wai ; Wu, Jingshown
Author_Institution :
Dept. of Electron. Eng. & Technol., Nat. Taiwan Inst. of Technol., Taipei, Taiwan
Abstract :
A novel switched-current modified bilinear integrator is proposed. Modified bilinear transformation can improve the frequency warping effect and lead itself to the applications of the high frequency filters. The realization of this integrator requires only current mirrors and analog switches. Based on the proposed integrators, a second-order bandpass filter and a third-order ladder lowpass filter are designed and simulated. The simulation agrees well with the theoretical analysis. The results will be useful for the realizations of fully integrated switched-current filters
Keywords :
active filters; active networks; band-pass filters; integrating circuits; ladder networks; low-pass filters; switched filters; switched networks; active type; analog switches; bilinear integrator; current mirrors; frequency warping effect; high frequency filters; ladder lowpass filter; second-order bandpass filter; simulation; switched-current; third-order; Analytical models; Band pass filters; Circuit simulation; Circuit synthesis; Frequency; Mirrors; SPICE; Sampling methods; Signal processing; Transfer functions;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176755
