基于NI Multisim 10的有源滤波器的设计与仿真（Design and simulation of active filter based on NI Multisim 10）.doc

基于NI Multisim 10的有源滤波器的设计与仿真（Design and simulation of active filter based on NI Multisim 10） = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = page 1 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Volume 35, phase 6 Informatization research V01.35 No. 6 June 2009 Informatization Research Jun. 2009 Based on the NI Multisim The design and simulation of active filter of 10 Wen-jun zhang (PLA electronic engineering college, hefei, anhui, 230037) Abstract: active filter is based on its small size, light weight, low cost, high reliability, amplification of gain, standardization of design, modularity, It is easy to integrate and other prominent advantages, and has a wide application in signal processing. In the MFB (infinite gain multipath feedback) filter circuit On the basis of the transfer function analysis, the method of the low pass filter circuit cascade by the second order MFB is constructed with a passive low pass filter, which is designed by the method of lookup table method The 8-order active low-pass filter based on butterworth approximation and NI Multisim The communication features of the software to the designed filter The simulation analysis is performed, and its communication characteristics are in accordance with the design theory and have certain reference value. Keywords: active filter; The simulation; NI Multisim 10 Middle image classification no. : TN713.8 0 the introduction Filters in communication measurement, control systems, electrical systems and electrical equipment There is a wide range of applications. Since the 1960s, there have been sources The filter is due to its outstanding advantages such as small volume, light weight and low cost High availability, gain amplification, design standardization, modularity, easy integration There are more and more applications in signal processing. So there are studies Source filter design has great practical significance ¨ J. In this paper, the