Omnidirectional antenna

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Science and technology

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What Wikipedia says

In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis.

Excerpt from the Wikipedia article “Omnidirectional antenna”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Schwarzbeck Mess-Elektronik, CC BY-SA 3.0, via Wikimedia Commons.