Magnitude Frequency response plot
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Given
H(z)=(0.6-z^-1)(1+2z^-1)/(3-z^1)(2-(jz^-1),
how can code and plot the magnitude response and phase?
And how do I find H(2)?
1 个评论
Star Strider
2016-8-7
Go back to your tf call, post it and all other relevant code, and tell us what ‘j’ is. (It cannot be the imaginary operator, because ‘z’ already includes it.)
回答（2 个）
Damien
2016-10-3
Hello Boom,
You have to firstly define your variables z and j. if z is going from 1 to 10, and j is 1 then:
z=1:10;
j=1;
H(z)=(0.6-z.^-1).*(1+2*z.^-1)./(3-z.^1).*(2-(j*z.^-1));
%
plot(H)
H(2)
When you multiply vectors or matrices, you have to use scalar (.* or ./).
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