Communications: radio wave antennas – Antennas – With spaced or external radio wave refractor
Patent
1983-02-08
1986-04-08
Lieberman, Eli
Communications: radio wave antennas
Antennas
With spaced or external radio wave refractor
343781P, 343872, 343910, H01Q 1919, H01Q 1906
Patent
active
045816158
ABSTRACT:
A two reflector microwave antenna has a concave focusing main dish having an integral peripheral flange. An integral radome shell also having a peripheral flange is disposed in confronting relationship to the main dish flange. Mounted over both flanges is a clamping ring to keep the main dish and radome shell in a stress condition of fixed edge shells. A secondary reflector is provided on a central portion of the radome. The concave focusing main dish in one example, defines a paraboloid of revolution. Specific shapes of the main dish and the radome shell are selected to appropriately focus the microwave radiation. A radome portion of a variable thickness of dielectric material of the integral radome shell modify the path of microwave energy compensating for diffraction of induced edge spillover. The stress condition of the shells as maintained by the clamp about the flanges provides a structually rigid antenna substantially void of structural elements.
REFERENCES:
patent: 3296685 (1967-01-01), Suliteanu
patent: 3430244 (1969-02-01), Bartlett et al.
patent: 3430245 (1969-02-01), Wolcott
Levy Sidney
Lieberman Eli
Supnik Paul D.
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