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Microstrip Bandpass filter - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


Antonio
Post subject: Microstrip Bandpass filter Posted: Mon Jul 23, 2007 3:33 am

Captain


Joined: Sat Jun 16, 2007 12:26 am
Posts: 12
Hi all,

I am trying to design a Microstrip bandpass filter using edge Coupled Tapped line structure. After designing and simulating it in ADS, i found variations in the actual performance and simulation result. I found that there is a shift in the band and poor return loss.

Can anyone please suggest me
1.why i am getting shift in the band??
2. Why there is mismatch in the simulation and actual response even though i am feeding the substrate information in the simulation?
3. How to control this shift in the band?
4. How to improve the return loss perfomance?

Please help me to solve this problem.






Posted  11/12/2012
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