how to compute the complex Fourier series expansion of half-wave rectified signal. and plot its phase and amplitude spectrum?

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WJ
WJ 2020-8-12
回答： EE_student 2021-6-19
My Question in the title, i am new to matlab and i need help with this please

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回答（4 个）

Sulaymon Eshkabilov
Hi,
Here are several nice tutorial examples of matlab on Fourier Transform.
https://www.mathworks.com/help/matlab/math/fourier-transforms.html
Star Strider
Star Strider 2020-8-12
My impression is that this is homework. We give hints for homework, not complete code. (You must write the code. We will help you to get your code to run if you have problems with it.)
It is straightforward to compute the Fourier transform symbolically. You need to remember also to allow for the part of the signal that is zero in the time range that you are computing it.
You already discovered Hi how do i plot a halfwave rectifier signal in matlab? i tried the coding below and only got the fullwave (since you posted a Comment to it to request thatI look at this Question), all you then need to do is to read the documentation for fft and use that with the signal I provided in that Answer.
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WJ
WJ 2020-8-12
编辑：WJ 2020-8-12
how can i make the amplitude and phase look like this? as straight lines
or is it just like this when n= a constant number?
Star Strider
Star Strider 2020-8-12
To get the amplitude (amplitude = magnitude) spectrum such as in the plot image, use the fftshift function, then plot using a symmetric frequency vector, for example:
sy = fftshift(y);
sf = linspace(-10,10, numel(sy));
then:
figure
stem(sf, sy)
or something similar.

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Swapnil Khot
Swapnil Khot 2021-5-8
How we write code for half wave rectifier using Fourier series
EE_student
EE_student 2021-6-19
Wait have you sorted it out?

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