Study antennas with this utility. Radiation Pattern of two Aerials enable you to study the effect of distance and phase shift of two coupled antennas.
As the length of a single linear antenna increases, a characteristic deterioration in directivity appears showing so called side lobes.
If several antennas are used in parallel, however, directivity is improved due to the increase in antenna surface area. The field of single radiators is additive in the directions in which the oscillations are in phase, while they are canceled out in other directions by interference.

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