Research of Computer Aided Design for Anti-Aliasing Filter Based on MATLAB
Anti-aliasing filter is widely used in the field of communication and the information collecting system. Generally, anti-aliasing filter is consisted with a low-pass filter, which possesses rapid roll-off rate. In order to ensure that there will be a very smooth amplitude frequency characteristic, the high order Butterworth low-pass filter is adopted to work as anti-aliasing filter. As we know, to design this kind of high order low-pass filter will involve large amount of manual calculation. In order to reduce the manual calculation job, which is meaningless and reduplicated, in this paper, a MATLAB scripts is proposed to establish a model of computer aided design for anti-aliasing filter. To use this MATLAB scripts, the value of parameter for the filter can be easily got according to the design specification.
Xingui He, Ertian Hua, Yun Lin and Xiaozhu Liu
X. M. Jiang "Research of Computer Aided Design for Anti-Aliasing Filter Based on MATLAB", Applied Mechanics and Materials, Vols. 88-89, pp. 145-149, 2011