以單一個第二代電流傳輸器設計具有回授電容的萬用二階電流式濾波電路

本論文提出一電流式二階巴特沃茲萬用濾波器，其主動元件使用單一個第二代電流傳輸器且使用回授電容來設計電路。本論文的設計方法為，將二階萬用濾波器的轉移函數以矩陣模式表示，利用主動元件電流傳輸器的特性和使用節點分析法(Noldal Analysis)完成矩陣關係式。　　第二代電流傳輸器(Second-generation Current Conveyor，簡稱CCII)為電路中的主動元件，此元件為電流式主動元件。以電流傳輸器設計之電路具有以下優點: (1)改變部分被動元件，可輸出任意波型之濾波電路 (2)將電容接地，減少寄生電容並且將電路面積縮小(3)其電路靈感度較低(4)不需元件匹配、可以正交方式調整其品質因素與諧振頻率等優點。在電路的精準度、穩定度、敏感度、蒙地卡羅、動態範圍及線性範圍、交互調變頻譜等電路特性使用TSMC 3.3-V 0.35-μm CMOS製程參數進行電路特性模擬。

關鍵字

第二代電流傳輸器；回授電容；二階濾波電路

並列摘要

The theis propose a current second-order Butterworth filter Universal，Its active components using a single second-generation current conveyor and using feedback capacitor circuit design. In this paper, the design method of the second order mode is represented by a matrix million for the transfer function of the filter, using active element current transmitter characteristics and use of nodal analysis (Noldal Analysis) to complete the matrix relationship. 　　The second-generation current conveyor (Second-generation Current Conveyor, referred CCII) for the active circuit element, this element is a current type active element. In the current conveyor circuit design has the following advantages: (1) changing section passive components, can output an arbitrary waveform of the filter circuit (2) the capacitance to ground, reducing the parasitic capacitance and the circuit area reduced (3) The circuit inspiration degrees above low (4) without matching element, you can adjust the quality factor and the resonant frequency of the advantages of orthogonal mode. 　　Degree in accuracy, stability circuit, sensitivity, Monte Carlo, dynamic range and linearity, and other interactive modulation spectrum characteristics of the circuit using the TSMC 3.3-V 0.35-μm CMOS process parameters characteristic of the circuit simulation.

並列關鍵字

CCII ； feedback-loop capacitor ； second-order filter circuit

參考文獻

[1]Phillip E.Allen and Douglas R.Holberg.CMOS Analog Circuit Design,Saunders College Publishing Hbj,2002

[2]K. C. Smith and A. Sedra, “The current conveyor-a new circuit building block”, IEEE Proc, vol. 56, pp. 1368-1369, 1968.

[4]M.Alami and A.Fabre,”Insensitive current-mode bandpass filter implemented from two current conveyors,”Electronics Letters,vol.27,no.11,pp.897-899,1991

[5]A.Fabre,”Third-generation current conveyor:a new helpful active emement”,Electron.Lett.,vol.31mno.5,199.5

[7] TOUMAZOU, c., and LIOGEY, F. I.: ‘Universal active filter using current conveyors’, Electron. Lett., 1986,22, pp. 662-664

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以單一個第二代電流傳輸器設計具有回授電容的萬用二階電流式濾波電路

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