sprial anten designer on ansoft

ı have started designer of sprial antenna newly.ı have designer on my pc.I have been working for two weeks.ı designed a few antennas but ı couldnt productivity which ı want.generally my parameters are VSWR and S11.ı am looking those.VSWR and S11 parameters are very high on my designer.sometimes ı making bigger the size of antenna but it isnt doing it.what should ı do.can you help me?


thanks in advance

Try ti use IE3D or CST. CST 2009 is having a inbuild feature of spirals also the mesh at the corners is smart fit so u get good accuracy.

thanks.ı researched internet but ı could not find this program(CST and IE4D).actually ı made a sprial antenna yesterday but the gain is very low at 13.56 mhz.ı should design at 13.56 mhz.ı have only ansoft designer.How can ı get VSWR easily or how can ı get gain bigger?