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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Microstrip Bandpass filter - RF Cafe Forums

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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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