Magnitude Frequency response plot

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Boom
Boom 2016-8-7
回答： Madhura 2023-8-7
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
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.)

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回答（2 个）

Damien
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 ./).
Madhura
Madhura 2023-8-7
H(z)=1/z-1
find magnitude

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