MATLAB® and Its Applications in Engineering: [Based on MATLAB 7.5 (R2007b)]

15.13. IIR Filter Design Using FDA Tool

Example 15.26.

Design an IIR Butterworth bandpass filter with the following specifications: Normalized passband edges at 0.40 and 0.65 Normalized stopband edges at 0.3 and 0.75 Passband ripple 1 dB Minimum stopband attenuation 40 dB Show (i) Magnitude response (ii) Phase response (iii) Group delay (iv) Phase delay response. Solution: As per the given specifications, the requisite data is entered in new FDA Tool window as shown in Figure 15.32. Figure 15.32. FDA Tool Window Showing Specification Entered and Magnitude Response for Example 15.26 [View full size image] The filter is designed for minimum order ...