antenna question...
时间：04-08
整理：3721RD
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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?
thks in adv
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?
thks in adv