Communications: radio wave antennas – Antennas – Antenna with parasitic director
Patent
1981-02-23
1983-09-06
Tubbesing, T. H.
Communications: radio wave antennas
Antennas
Antenna with parasitic director
343 18B, 343100PE, 343797, H01Q 1900
Patent
active
044032226
ABSTRACT:
A passive device is taught which diverts radio-frequency electromagnetic energy from an original path to a new path at a 90.degree. angle. The device eliminates the large reflective sheets which characterize prior art devices for the same purpose. The device utilizes a modified Yagii-Uda parasitic array to excite a cross-dipole element which reradiates the energy along the new direction. A particular application is shown for placing the device in or on a wall or the like for unobtrusive diversion of energy.
REFERENCES:
patent: 3524191 (1970-08-01), Ehrenspeck
Bitter, Jr. Charles R.
Cripps Raymond M.
Motorola Inc.
Parsons Eugene A.
Tubbesing T. H.
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