CPW feed port is similar to the one we define for microstrip antennas with ground plane. Normally define a box with width=3(2g+w) and height= 4h, starting from the bottom of the substrate.
where, w=width of center conductor, g=conductor spacing, h=substrate thickness.
It's somewaht similar to lump port feeding. Refer section 5.6, user’s guide – High Frequency Structure Simulator. Procedure is described there. good luck!
CPW feed port is similar to the one we define for microstrip antennas with ground plane. Normally define a box with width=3(2g+w) and height= 4h, starting from the bottom of the substrate.
where, w=width of center conductor, g=conductor spacing, h=substrate thickness.
Also you can use the attached power point as a guidance for the CPW port, Hopefully it will be beneficial for you. All the best.
Use waveport, not lumped port(if excitation is external) for gud results
Try HFSS full Book.
it is a great manual that covers many topics. It is 800 pages
see the link. It is PDF file
http://www.cnam.umd.edu/anlage/HFSSv10UserGuide.pdf
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