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Narrow Band Pass Filter Design | Cypress Semiconductor

Narrow Band Pass Filter Design

Summary: 4 Replies, Latest post by Piona on 24 Aug 2015 06:35 AM PDT
Verified Answers: 1
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BMAH's picture
Cypress Employee
224 posts

Following is an example project for implementing a Narrow Band Pass Filter. A documentation explaining the same has also been attached.

 

 

user_501149274's picture
User
118 posts

Thank you very much! Very helpful!

Just one question: May using the IIR filter will make the system unstable? I tried to use FIR windows but it is not doing the job ....

Thanks!!!

user_14586677's picture
User
7648 posts

The IIR approach will work, but question is what was it about the FIR

that was not working ? What are the parameters of the BPF you want

to achieve ?

 

If stability are you concerned with step or impulse response ? That is a

result that occurs in a narrow band filter where its poles by necessity

are close to the jw axis, ie the real part of the pole location is relatively

small. Stated another way you are driving energy into a reactive network,

the imaginary part is a storage device, like L, C, and that energy gets re-

turned, whereas any energy encountering real part gets turned into heat.

The greater the real part the more dampened the transient.

 

Regards, Dana.

user_501149274's picture
User
118 posts

Dana, do you succeeded to open the project attached?

user_501149274's picture
User
118 posts

this is what I got:

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