DESIGN OF DIGITAL IIR FILTER USING MATRIX OPERATION

Abstract

The transfer function H(z) of the desired Digital Infinite Impulse Response Filter can be obtained from the normalized transfer function Ha(s) of the analog low pass filter .Recently it has been shown that Pascal Matrix allows the appropriate transformation for design of the low pass, high pass , and band pass digital filters . Unfortunately, this method is difficult to use in case of transforming Ha(s) to the High order bandpass filter. This project discusses the design of digital IIR filter using frequency transformation by matrix operation . This method uses two matrices one for frequency transformation and another for bilinear transformation, obviously second matrix is the Pascal matrix. Combination of the matrices described here with the Pascal matrix allows the design of the digital IIR filters from the continuous time prototypes. After designing IIR Digital filter using above method we will design same filter by using other well known frequency transformation method...