Can anyone tell me how to design the microstrip filter?

Thread Starter

Justintin

Joined Feb 16, 2008
3
Hi everyone,
I am so new in designing filter, but now I need to design a micostrip filter using square open loop resonator. I read some papers about it, but i haven't got any ideas. Can anyone tell me what is the designing equation about it and how to design it?? Thanks.
 

SgtWookie

Joined Jul 17, 2007
22,210
I got a lot of hits with this query:
http://www.google.com/search?hl=en&q=microstrip+filter+design

but this page in particular had some interesting Excel tools that you could download:
http://tools.rfdude.com/Filter/filter.html

Fiddling with filters in the GHz region can be rather frustrating, particularly if you neglect to figure in things like parasitics, the dielectric characteristics of your selected board, enclosure dimensions, etc. - and the higher in frequency you go, the more critical things like that become.
 

Thread Starter

Justintin

Joined Feb 16, 2008
3
Thank you for your help.
I had also search it in google, but the filter I designed needs to be specificed in using open loop resonator. I haven't any ideas about it. And I want to find out the designing equation of it. Pls help. Thanks
 

Thread Starter

Justintin

Joined Feb 16, 2008
3
Thank you for help.
I think the software is very powerful, but it is very expensive.
I want to design the square open loop resonator in microwave filter by hand cacultion.
However, how can I find out the equation of the filter?
I still haven't any ideas about it. Pls help. Thanks.
 
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