Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Patent
1978-12-18
1982-03-02
Lieberman, Eli
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
343908, 324 585A, H01Q 1500, G01R 2704
Patent
active
043181082
ABSTRACT:
A transmission/reception antenna for electromagnetic energy of a selected wavelength. The antenna features a central radiation-effective expanse which, in the case of transmission, functions as a driven element, and in the case of reception, functions as a main receiving element. Cooperating with this expanse is a focusing lens which produces simultaneously on opposite sides of the antenna a pair of symmetrically spaced focal points relative to the expanse--such points being separated by a distance substantially equaling one-half the mentioned selected wavelength.
REFERENCES:
patent: 2576181 (1951-11-01), Iams
patent: 2795783 (1957-06-01), Dunbar
patent: 3233172 (1966-02-01), Luoma
patent: 3491361 (1970-01-01), Campbell
Lieberman Eli
Near Field Technology Co.
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