Microstrip Interdigital BPF

hi,
I have tried to design interdigital BPF using Eagleware and ADSV. But when I put it into Sonnet to run the EM simulation, it is not really good. May I know is there anyway to tune an interdigital BPF or is there any better way to design?

Thanks :D

did u calculated the filter by urself or used ads and eagleware to synthize the filter

and did u use the momentum to EM simulate the filter

khouly

I synthesized it using Eagleware and put the structure into Sonnet for the EM simulation.

when u designed the filter in eagleware , did u inlcude the walls or not

khouly