A Current-Mode Nth-Order Multifunction Filter Using Minimum Number of DVCCs

2011 International Conference on Network Computing and Information Security Pub Date : 2011-05-14 DOI:10.1109/NCIS.2011.160

Ping-hua Zhang, Xi-feng Zhou, Shan Xiao

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引用次数: 6

Abstract

In this paper, a nth-order current-mode universal filter based on differential voltage current conveyors (DVCCs) is proposed. Using minimum number of passive Components, The filter obtained from the proposed structure can simultaneously realize low-pass, band-pass, all-pass, high-pass and band-reject responses by choosing appropriate input branches without changing the passive elements. The obtained nth-order filter is only composed by n DVCCs and n capacitors and n resistors. All capacitors and resistors are grounded, which is integrated conveniently and is compatible with VLSI technology. The proposed filter requires no active and passive element matching conditions and/or cancellation constraints. Additionally, a universal biquadratic filter as an example is introduced. The second-order filter has low active and passive element sensitivities, and offers orthogonal control of the angular resonance frequency (?o) and quality factor (Q). HSPICE simulations are performed employing 0.18μm CMOS process and the performance simulation results are tested by comparing with the theoretical results of the filter.

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一种采用最小dvcc数的电流模式n阶多功能滤波器

提出了一种基于差分电压电流传送带(dvcc)的n阶电流型通用滤波器。在无源元件数量最少的情况下，通过选择适当的输入支路，在不改变无源元件的情况下，所得到的滤波器可以同时实现低通、带通、全通、高通和带阻响应。所得到的n阶滤波器仅由n个dvcc、n个电容和n个电阻组成。所有电容和电阻均接地，集成方便，兼容超大规模集成电路技术。所提出的滤波器不需要有源和无源元素匹配条件和/或取消约束。此外，还介绍了一种通用双二次滤波器作为实例。该二阶滤波器具有低的有源和无源元件灵敏度，并可对角共振频率(o)和品质因子(Q)进行正交控制。采用0.18μm CMOS工艺进行了HSPICE仿真，并将仿真结果与理论结果进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2011 International Conference on Network Computing and Information Security

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