Sector antenna

<p>A sector antenna is a type of <a href="/facts/Directional_antenna/oLesxknQ">directional</a> <a href="/facts/Microwave/HmVSN31Y">microwave</a> <a href="/facts/Antenna_(radio)/pGlcXBvc">antenna</a> with a <a href="/facts/Circular_sector/TqwCaEA5">sector</a>-shaped <a href="/facts/Radiation_pattern/5t0QU2mv">radiation pattern</a>. The word "sector" is used in the geometric sense; some portion of the circumference of a circle measured in degrees of arc. 60°, 90° and 120° designs are typical, often with a few degrees 'extra' to ensure overlap and mounted in multiples when wider or full-circle coverage is required (see photos below). The largest use of these antennas is as antennas for <a href="/facts/Cell_phone/H3EcqD9h">cell phone</a> <a href="/facts/Cell_site/BIKMtles">base-station sites</a>.  They are also used for other types of <a href="/facts/Mobile_communication/pFqFCDyl">mobile communications</a>, for example in <a href="/facts/Wi-Fi/u94quCsx">Wi-Fi</a> networks. They are used for limited-range distances of around 4 to 5 km.
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Sector antenna open-in-new

Sector antenna