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
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.
2007, Vol. 29 
