consider a 3λ/4 linear wire antenna which is fed at the center,find :
i- the current distribution on the wire.
ii- for the input current of .7 Amp, find the loop current (I0) , and the maximum radiated E at r = 1000 m
iii- given that the radiation resistance of this antenna is 190 ohm (referred to I0), what is the maximum directivity ?