Feedome, primary radiator, and antenna for microwave
AssigneeSony Corporation
InventorsYasuhiro Okada, Keiji Fukuzawa
Life of this patent
Estimating the term…
Abstract
A feedome is disposed on the side of an opening of a radiator main body, and comprises a dielectric board having a thickness sufficiently smaller than the wavelength of radio wave, and a dielectric protrusion fixedly mounted to the dielectric board substantially in the center of the inner side thereof, and having a height approximately equal to integral number times (1/2).multidot..lambda. where the wavelength of radio wave is .lambda., and a diameter approximately equal to the height of the dielectric protrusion.
Claims15
A feedome for use in a primary radiator unit of an antenna to prevent rain, dust and other elements from entering an inside portion of said primary radiator, said feedome comprising:
- a dielectric board having a thickness sufficiently smaller than a wavelength of a radio wave, said dielectric board having a first side;
- and
- a dielectric protrusion fixedly mounted to said dielectric board substantially in a center of said first side thereof, said dielectric protrusion having a height approximately equal to an integral number times (1/2).multidot..lambda. (where said wavelength of the radio wave is .lambda.) so that said height is significantly larger than the thickness of said dielectric board, and a cross-sectional dimension approximately equal to said height of said dielectric protrusion.
A primary radiator, comprising:
- a main body having an opening on which a radio wave is incident;
- and
- a feedome disposed on a side of said opening of said main body for preventing rain, dust and other elements from entering said opening of said main body,
- said feedome comprising:
- a dielectric board disposed with respect to said opening of said main body and having a thickness sufficiently smaller than a wavelength of the radio wave, said dielectric board having a first side;
- and
- a dielectric protrusion fixedly mounted to said dielectric board substantially in a center of said first side thereof, said dielectric protrusion having a height approximately equal to an integral number times (1/2).multidot..lambda. (where said wavelength of the radio wave is .lambda.) so that said height is significantly larger than the thickness of said dielectric board, and a cross-sectional dimension approximately equal to said height of said dielectric protrusion.
An antenna for microwave, comprising:
- a reflector arranged to reflect a radio wave;
- and
- a primary radiator disposed with respect to said reflector, said primary radiator receiving the radio wave reflected by the reflector,
- said primary radiator comprising a main body having an opening, and a feedome disposed on a side of said opening of said main body for preventing rain, dust and other elements from entering said opening of said main body,
- said feedome comprising:
- a dielectric board disposed with respect to said opening of said main body and having a thickness sufficiently smaller than a wavelength of the radio wave, said dielectric board having a first side;
- and
- a dielectric protrusion fixedly mounted to said dielectric board substantially in a center of said first side thereof, said dielectric protrusion having a height approximately equal to an integral number times (1/2).multidot..lambda. (where said wavelength of the radio wave is .lambda.) so that said height is significantly larger than the thickness of said dielectric board, and a cross-sectional dimension approximately equal to said height of said dielectric protrusion.
Dependencies are inferred from the claim text.