Zero-Phase Filter design using FDATool to get Verilog HDL code

I have designed an high-pass filter for perform filtering of the time domain signal. I used filtfilt() function to perform the filtering operation. Now I want to design the same filter in the hardware. For that purpose I am using FDATool in MATLAB. But I can't find any option for zero-phase filter design inside the FDATool. Please help me in this regards and guide me how can I generate a zero-phase filter verilog code from the FDATool.

Answer 1

[Yukthi S]

Hello Syed,

I noticed that you wanted to implement zero-phase digital filtering in hardware for the same high-pass filter you designed using the “filtfilt” function.

You can refer to the following MathWorks Documentation link which also talks about the same.

https://www.mathworks.com/help/releases/R2019a/dsp/ug/using-filter-designer.html#:~:text=right%2Dclick%20the%20y%2Daxis%20of%20the%20plot%20and%20select%20Zero%2Dphase

I have attached an image as well for your understanding:

To generate Verilog code for the same, you can follow the below steps:

1. Click on “Targets” in the toolbar.

2. Select "Generate HDL".

3. Set the target language as “Verilog” and click on “Generate”.

Hope this helps!