Réf. : Re: [UKMicrowaves] Combline filter design


F1CHF
 

when you said INTERDIGITAL
this is this one ?
 
regrads,
 
 
 
 
 
-------Message original-------
 
Date : 24/01/2019 17:25:53
Sujet : Re: [UKMicrowaves] Combline filter design
 

Hello Andy

 

You can try:-

 

https://www.changpuak.ch/electronics/combline_bandpass_filter_designer.php

 

It’s pretty simple – and comes with the caveat that I have not used it !

 

However I have used the interdigital design from that site. I would say it provides a good starting point and will get you close rather than a final design.

 

Regards

 

John G4ZTR

 

 

From: UKMicrowaves@groups.io [mailto:UKMicrowaves@groups.io] On Behalf Of Andy G4JNT
Sent: 24 January 2019 15:46
To: UK Microwaves groups.io
Subject: [UKMicrowaves] Combline filter design

 

Can anyone point me at a standalone bit of software for combline filter design.   I have Ansoft Designer, that Paul Wade recommends for this purpose, but it's a bit over complicated and was looking for something simpler to run, and specifically for rods and metal.   

 

I have his interdigital design software, but want something similar for all the resonators on one side - so I'm not tied into a specific width of housing that IDFs seem to require (lamda /4 it seems to be)

 

Specifically, I want to use standard waveguide as the housing.  A short bit of WG14 looks perfect for a quite high spec filter at 2.35 GHZ

 

Andy