Voltage-mode Universal Biquadratic Filters Using Two PFTFNs

使用兩個正型FTFN之電壓模式泛用二階濾波器

洪君維(Jiun-Wei Horng)

《中原學報》 29卷3期 (2001/09) Pp. 279-284

https://doi.org/10.6358/JCYU.200109.0279

摘要

本文旨在提出兩個新型電壓模式泛用二階濾波器，每個濾波器由兩個正型FTFN所合成。所提出的電路可以合成二階高通，帶通，低通，帶拒及全通濾波器。電路的主動及被動靈敏度皆低，只使用正型的FTFN元件簡化了線路。電腦模擬驗證了理論的正確。

關鍵字

主動濾波器 ； 電流式電路

並列摘要

Two voltage-mode universal biquadratic filters using positive four-terminal floating nullors (PFTFNs) are presented. Each one of the proposed filters using two PFTFNs. The proposed configurations can realize lowpass, bandpass, highpass, notch and allpass transfer functions. Moreover, the proposed circuits enjoys low active and passive sensitivities. The use of only positive FTFNs simplifies the configurations. Simulation results are given to verify the theoretical analysis.

並列關鍵字

active filters ； current mode circuits