多輸入單輸出高階電流式CCCII-C濾波電路之設計

Design of High-Order Current-Mode CCCII-C Filters with Multiple Inputs and Signal Output

汪仁安(Jen-An Wang)

指導教授 ： 張俊明

中原大學/工學院/電機工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300353

摘要

以電流傳輸器(Current Conveyor)設計主動濾波電路且有很好的特性已受到許多的注目。本論文的研究主要是使用第二代電流控制傳輸器(Second-generation Current Controlled Conveyor , CCCII)設計電流式N階萬用濾波器。這種主動元件有內部電流控制電阻值的特性，對於精簡電路設計與使設計的電路晶片化都有很大的幫助。本論文所提出的N階萬用濾波電路是以最少的主、被動元件(N階濾波電路由N個CCCII與N個接地電容器)設計出萬用濾波電路(即可由同一電路中得到高通，低通，全通，帶通與帶拒等濾波訊號)。

本論文的第二章是介紹本論文所使用的主動元件: 第二代電流控制傳輸器(CCCII)，以及由不同的內部電路來說明CCCII的演進過程，第三章是介紹本論文設計N階萬用濾波電路的方法。此濾波電路所使用的設計方法是先由基本建構方塊來實現所希望完成的組態，由低階的電路開始設計，找尋適合高階電路設計的基本建構方塊，可將此建構方塊延伸至N階濾波電路，並以訊號流程圖表示其電路的設計方式，接著使用多迴路回授的概念進行N階電路的實現。第四章是將設計N階萬用濾波電路的步驟做完整的呈獻，使用第二章所調整的CCCII內部電路以及第三章所提出的設計方法，在電路分析時使用正規化的概念將設計參數精簡。本論文設計的電流式萬用N階濾波器具有最少的主、被動元件，在同一電路的架構下同時擁有五種不同濾波信號。

本論文所提出的電路均以HSPICE做為實際驗證的模擬工具，且使用UMC05 LEVEL49 的製程參數做為在晶片化前的考量，因此本論文的濾波電路只要在經過佈局與Post Simulation就可以下線(Type out)作實際的驗證，在部份理論的驗證則使用了PSPICE做為理論驗證的模擬工具，PSPICE雖然不包含製程參數的考量，不過對於設計電路時，針對理論上的驗證則有很大的幫助。

本論文所提出的電路在經過HSPICE與PSPICE的驗證後，都有很好的表現，與理論值均相當吻合，未來在實際的運用上均有很大的發展空間。

關鍵字

高階濾波器 ； 主動濾波器 ； 電流控制電流傳輸器

並列摘要

The design of active filter circuits by using current conveyor with high performance has received much attention. The main research designs the nth order universal filter that uses Second generation Current Controlled Conveyors(CCCIIs) in the thesis. The characteristic of CCCII provides wide tunable range of their intrinsic resistance that is more suitable for monolithic integration and more helpful for easy circuit design. In the thesis, the author employs the minimum components, only n CCCIIs and only n grounded capacitors, to realize an nth-order current-mode universal filter structure which can simultaneously realize lowpass, bandpass, highpass, bandreject and allpass filtering signals form the same configuration.
Three approaches to design the nth order universal filter. The first approach of design uses the induction method, which is to construct a second-order model first, a third-order model ….. , and induce to an nth-order circuit structure final. The second approach is to use the signal flow diagram to do the approach of filter circuit design. The third approach is to use the multiloop feedback concept to realize the nth order universal filter. The nth order universal filter circuit has the minimum active and passive components and give five different generic filtering signal simultaneously from the same configuration.

HSPICE simulation with use the process parameter of UMC05 LEVEL49 validates the proposed circuit structure. It can type out the proposed filter in an integrated form through layout and post simulation. PSPICE simulation is also used in the thesis that is helpful in the theoretical design.

並列關鍵字

Active filter ； CCCII ； high order filter

參考文獻

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