design a bandpass filter at millimeter band

i want to design a bandpass filter at millimeter band. what software is better?
can some one design it for me?
substrate: quartz, er=3.78, tanD=0.001
Fo= 35GHz, BW=1GHz.
rejection is -30dB at 34 and 35GHz.

ADS, MWOffice, Eagleware-Genesys, Ansoft-Serenade, etc, will do this job. For this particularly application probably the most user friendly is MWOffice or Eagleware.
For some of them you can download a trial version or a student version.
regards

Zeland's FilterSyn is another powerfull tool. synthesis is based on genetic optimization, and results is with 1E3D IE MoM core, one of the best in the market.

marti

+2 cents for ie3d of Zeland , and they provide you now a 60 days trial and manuals after registration.

You can try to use HFSS if you'd like to do so.It's one of your best choice.

hi nckwang

ADS momentum is a good EM simulator for doing a mm wave planar filter design ( we have done it & checked with the measured results) ;
MWoffice does not have a great EM simulator as the meshing is not proper ( no triangular meshes are generated and the meshing is done with respect to the grid & not the structure);Also,do not think a 3D EM simualtor like HFSS is required as it would involve a lot of simulation time;