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.
Purpose
editExamples of this are the quadrant antenna, a steeply omnidirectional shortwave transmitting antenna in the form of an L-dipole consisting of two identical cage traps, and the curtain antenna (a directional shortwave transmitting antenna) with several folding dipoles made of cage traps.[1]
History
editIn 1921, a amateur radio operator try to win a $500.00 prize with his cage aerial.[3]
References
edit- ^ "Kurzwellensender Moosbrunn bei Wien". www.wabweb.net. Retrieved 2024-11-09.
- ^ "Rundfunksender in Bayern". www.wabweb.net. Retrieved 2024-11-09.
- ^ Gernsback, Hugo (2016), Wythoff, Grant (ed.), "Results of the $500.00 Prize Contest: Who Will Save the Radio Amateur? (1923)", The Perversity of Things, Hugo Gernsback on Media, Tinkering, and Scientifiction, University of Minnesota Press, pp. 256–268, doi:10.5749/j.ctt1jktpxr.48?searchtext=%22cage+aerial%22&searchuri=/action/dobasicsearch?query=%22cage+aerial%22&acc=on&wc=on&so=rel&ab_segments=0/basic_phrase_search/control&refreqid=fastly-default:15a302ff5998dd24240cdd4013b2b0d5&seq=8, ISBN 978-1-5179-0085-4, retrieved 2024-11-09