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Asymmetric Filters - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement

Post subject: asymmetric filters Posted: Thu Sep 04, 2008 7:27 am


Joined: Thu Sep 04, 2008 7:25 am
Posts: 3

i would like to know how to design asymmetric filters.



Post subject: Posted: Fri Sep 05, 2008 4:12 am


Joined: Fri Feb 17, 2006 12:07 pm
Posts: 218
Location: London UK
Hi ofourquin
In what sense are they to be asymmetrical?
Impedance unequal at input and output?
Or unequal roll-off slope LF side vs HF side?
Bandpass, low-pass, or high-pass, or any?
There are some good websites that include java script routines for interactive filter designs.


Post subject: Posted: Mon Sep 08, 2008 11:10 am


Joined: Thu Sep 04, 2008 7:25 am
Posts: 3

I would like to do a band pass filter

It is the structure of the filter which is not symetrical. It is also call coupled filter in “Handbook of Filter Synthesis” books from Zverev.

The impedance is set to 50 Ohm in input and output for UWB applications [3.1 ; 10.6] GHz.


Post subject: Posted: Mon Sep 08, 2008 11:15 am


Joined: Thu Sep 04, 2008 7:25 am
Posts: 3
Just a precision

it is not bandpass filter based on the LP filter theory where where we find capacitor with a inductance in series

ps sorry for my bad english

Posted  11/12/2012

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