以信號加權觀念設計電壓式CCCII-C 高階萬用濾波電路

Design of High-Order Voltage-Mode CCCII-C Universal Filter Structure Using Weighting Signal Approach

蔡松樹(Song-Shue Tsai)

指導教授 ： 侯俊禮 ； 張俊明

中原大學/工學院/電機工程研究所/碩士(2004年)

https://doi.org/10.6840/cycu200400420

摘要

以電流傳輸器(Current Conveyor) 設計主動濾波電路，已經受到許多學者重視與注目。本論文提出以建構方塊及信號加權觀念設計電壓式高階萬用濾波電路，並且選用第二代電流控制傳輸器(The Second-generation Current Controlled Conveyor，CCCII)作為主動元件，搭配電容器，來實現多功能即高通、低通、帶通、帶拒與全通濾波電路。一個N階濾波電路只使用數目最少的2N＋2個CCCII主動元件，只使用N個接地電容器，且電路結構不需要使用電阻器，有利於縮小電路積體化之實現。首先，我們提出一個以建構方塊實現的一階CCCII-C電路圖來當作基本單元模型，然後推廣到N階，可以得出以信號加權觀念設計之電壓式高階萬用濾波電路。所設計之電路不需任何阻抗匹配條件，不需電流倍數調整及反向電流調整，即可實現低通、帶通、高通、帶拒與全通五種濾波信號。
最後，針對不同之電容器、不同頻率及不同的階數使用Pspice及Hspice來驗證電路之可行性。

關鍵字

主動電路 ； 濾波器 ； 第二代電流控制傳輸器

並列摘要

The design of active filters by using current conveyors has received much attention in recent several decades. In this study, the voltag-mode high-order universal filter structure using the second generation current controlled conveyors and capacitors (CCCIIs-C) has been obtained by using weighting approach . First, we apply the block building approach to design a fundamental first-order CCCII-C filter circuit. The extension to nth-order filters leads to realize an nth-order voltage-mode universal filter structure which can simultaneously realize low-pass, band-pass, high-pass, band-reject , and allpass filtering signals from the same configuration. Note that any component matchings are not needed. The proposed nth-order voltage-mode filter structure has the least number, 2n+2, of active elements, only n grounded capacitors and no resistors.
Finally, H-Spice simulation results of the proposed 3rd-order filter validate the theory predictions .

並列關鍵字

active circuit ； CCCII ； filter

參考文獻

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