Helical antenna, normal mode

Can anyone suggest me some ebooks or other material on the subject.
I need advanced information.
Thank you in advance.

Recommend you a book.
John D Kraus <Antenna for all application>

A advance book by the name of

Antenna Theory (Analysis and design )
By Balanis

Antennas for all applications is a very good book as well.

Can you suggest when i can find this ebooks ?

using hfss u can model it and simulate it


STOP POSTING CRAP!
Warning #5!