Write a MATLAB m-file that can be used to obtain the normalized elliptic transfe

Question

Write a MATLAB m-file that can be used to obtain the normalized elliptic transfer function for any given set of specifications (k, A_p, A_a} where k is the selectivity, A_p is maximum passband loss, and A_a is the minimum stopband loss. Your program should also compute the actual stopband loss. (b) Use your program to obtain elliptic transfer functions for two different sets of specifications that would result in an even-order and an odd-order transfer function of order greater than 5. (c) Plot the loss characteristics associated with the transfer functions obtained.

Explanation / Answer

matlab program for elliptic transfer fucntion taking some set of values as input varaibles for the transfer function

%elliptic transfer function
[n,wp] = ellipord([.2 .3],[.14 .36],3,61.5);
[b,a] = ellip(n,3,61.5,wp);
% add 1.5 dB of gain
b = b*10.^(1.5/20);
[H,F]= freqz(b,a,1000,2);
plot(F,10*log10(H.*conj(H)));
set(gca,'ylim',[-70,3]);
grid('on');

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