hi, need some help answering some antenna questions... 2 isotropic radiators at x = -d and x = +d on the horizontal x-y plane. for primary radiation lobes to be in +/- y directions, the radiators are fed by 100Mhz sources having equal amplitudes with no phase difference. 1) a strong signal is arriving from distant radar station at φ = 60 deg.( φ is angle with x-axis). find value of d for minimize interference posed by distant radar station. 2)determine the power levels in the side lobes(if any) relative to the power in each primary lobe. 3)the 2 isotropic radiators are replace with 2 half-dipoles(with their axes vertical to x-y plane) does the result of part 1 & @ need to be re-computed? i have no idea where to start..