Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1968-04-18
1982-08-31
Hubler, Malcolm F.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 18D, 343100ET, 343753, 343911L, G01S 1374, H01Q 1908
Patent
active
043475124
ABSTRACT:
A communications system is described which utilizes an antenna having means for selectively controlling the amount of incident electromagnetic energy directionally reflected therefrom. The antenna is comprised of a spherically configured array of conductors which focus incident energy on a reflector whose electrical conductivity characteristics and thus reflectivity characteristics can be controllably varied. The reflector can comprise a gas tube whose conductivity and thus reflectivity characteristics are a function of the number of ionized gas molecules therein. Modulation of the reflector reflectivity characteristics permits identification information, for example, to be impressed on the energy reflected therefrom.
REFERENCES:
patent: 2159937 (1939-05-01), Zworykin
patent: 2921305 (1960-01-01), Cole et al.
patent: 3178705 (1965-04-01), Clock et al.
patent: 3371345 (1968-02-01), Lewis
"Spherical Radar Reflectors with High-Gain Omnidirectional Response", by H. E. Schrank, Westinghouse Air Arm Division, Balt. Md., Technical paper presented at the Sixth Annual East Coast Conference on Aeronautical and Navigational Electronics, Oct. 26-28, 1959, p. 11, 5-1.
Allied Corporation
Hubler Malcolm F.
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