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| A Systematic Design of Current-Mode Nth-Order CDBA-RC Universal Filter |
| Xi Yan-hui①; Li Hong①; Peng Liang-yu② |
| ①Electrical and Information Engineering College, Changsha Univ. of Science & Technology, Changsha 410077, China; ②College of Physics and Information Science, Hunan Normal University, Changsha 410081, China |
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Abstract A novel method for n-order current-mode filters using the Current Differencing Buffered Amplifier(CDBA) is presented. Based on the signal-flow-graph a systematic design formula is given in this papers. As examples, a new fifth-order butterworth low-pass, high-pass and fourth-order band-pass filters are realized. Simulation results from PSPICE are obtained to verify the theoretical analysis. The proposed filters have the characteristic of simple structure and less number of components.
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Received: 22 August 2005
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2007, Vol. 29 
