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Cage aerial

Type of radio antenna

Type of radio antenna

A cage antenna (British cage aerial) is a radio antenna where a conventional design has been augmented by replacing a single long conductor with several parallel wires, connected at their ends, and held in position by ring spacers or support struts mounted on a central mast (if any). The "cage" is either mounted around a central mast (either conducting or non-conducting) or suspended from overhead wires.

Examples

A few examples of aerials made of cage sections are:

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; Quadrant antenna : A quadrant antenna is an omnidirectional shortwave transmitting antenna shaped like a rhombus or lozenge, made from two identical, opposing L-shaped cage dipoles lying in the same horizontal plane, aligned with their 'elbows' pointing in opposite directions ; Curtain antenna : A curtain array antenna is a directional shortwave transmitting antenna made of several parallel-aligned dipoles, each made of cage sections.

History

In 1921, an amateur radio operator tried to win a $500 prize with his cage aerial.

References

References

  1. "Rundfunksender in Bayern".
  2. "Kurzwellensender Moosbrunn bei Wien".
  3. Gernsback, Hugo. (2016). "Results of the $500.00 Prize Contest: Who Will Save the Radio Amateur? (1923)". University of Minnesota Press.
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

radio-frequency-antenna-types antennas-(radio)
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