I'm working on an UWB antenna and I don't know how I fix the dimension of the radiation box?? I know (lamda / 4) but if I’m working on an UWB band from 0.3 GHZ to 4.5 GHz for example so what is the lambda to choice (corresponding to which frequency??)
I don't understand I’m working on 0.3 GHz to 4.5 GHZ and I want an UWB comportment so my antenna must operate at least from 400 MHz to 4 GHz, I don’t understand what you mean by operate frequency?? I haven’t only one resonant frequency but a wide band of frequency.
I will choice the central frequency for example??