No CST is not free. But I heard that crack is available in some torrent websites. And CST is best and easy to design antenna using different types of dielectric materials.

I am agree with Md.Moidul.

But you can take help of other organization or institutes surrounding your place regarding CST.You can read tutorial based on CST and Video on You tube from google.

Better you try to find out a place which is near to you for working on CST.

At the time of publication also you will get trouble if crack version is used.

All the best.

thank you for your reply all

now available to me to work with HFSS, is this helpful for dielectric?