Deviation in amplitude response

[ggk189]

Hi All,
I am designing a low pass linear phase third order filter with FDNR in it made up of transcondcutors.
I am having a deviation in my amplitude response due to the parasitic zero at 10 times the corner frequency.
Does anybody had such a problem. If so can u let me know the corrective measures to be taken.
Thank you for ur help

ggk

 

[Rip Van Woofer]

I doubt that there are more than a small handful people here who are even capable of understanding the question. I sure don't, except to hazard a guess that it involves filter theory! You might have better luck in the forums of the following sites:

Madisound Speaker component seller; has a forum where serious amateur builders and professional designers hang out.

Elliot Sound DIY electronics site with a knowledgable following; go to their Forum and post.