I need some suggestions. Well, I'm beginner in Antenna Design. The question is : the wave form of the input to the antenna, what is the effects or consequences of that ? Example, if my wave form is a square what is the output, or if is a sinoidale what is the consequences? And how can I modelling this wave form by Using a software "NEC4WIN95VM"? Where can I start, I'm confusing, I don't know where to get information or start with. Your help will be appreciated.