Batwing antenna

The advantage of the "batwing" design for television broadcasting is that it has a wide bandwidth.

[1] Two pairs of identical vertical batwing-shaped elements are mounted at right angles around a common mast.

The radiation pattern is close to omnidirectional but has four small lobes (maxima) in the directions of the four elements.

To reduce power radiated in the unwanted axial directions, in broadcast applications multiple bays fed in phase are stacked vertically with a spacing of approximately one wavelength, to create a collinear array.

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