Designing triangular patch in HFSS

I have problem in designing triangular patch in HFSS, can anyone help me in defining the patch,boundaries and a lumped port and integration line?

Have you read the manual and done several (ideally all) the examples? It seems you don't know how to do any of the steps needed, so I'm not sure how anyone is going to be able to usefully help you. There's no point starting HFSS with the aim of analyzing a specific antenna until you have done all the examples of antennas, and several others too.

The fact the HFSS manual is so out of date does not help, but some of the PDF files scattered on the disk are more up to date than the manual.

Dave

In fact i have problems in designing microstrip feed line and defining lumped port

Have you done the examples in the manual? This is covered in one of the examples.

Dave

I think you should first do a rectangular patch. The performance of rectangular patch is much better than triangular patch and is also easier to understand as there are loads of material available.