Horn antenna

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are widely used as antennas at UHF and microwave frequencies, above 300 MHz.

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

Image: Calistemon, CC BY-SA 4.0, via Wikimedia Commons.