Electromagnetic lens array antenna device
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Accused Products
Abstract
A multi-beam lens antenna for individual communication with communication satellites spaced at small elongations. The multi-beam antenna comprises primary feeds 3 each of which is composed of a waveguide having an opening at the end and a dielectric body 6 disposed at the end, a hemispherical Luneberg radio wave lens, and a reflective plate attached to the circular opening of the hemispherical radio wave lens and adapted for reflecting a radio wave incoming from the sky or emitted toward a target. The waveguides are preferably rectangular waveguides 4 rather than circular waveguides 5. The dielectric bodies 6 are preferably tapered.
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Citations
30 Claims
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1-10. -10. (canceled)
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11. A radio wave lens antenna comprising:
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a hemispherical radio wave lens for focusing radio wave beams;
a reflective plate attached to a half-cut surface of the sphere of the radio wave lens for reflecting radio waves incoming from the sky or radiated toward targets; and
primary feeds positioned at arbitrary radio wave focus points of the radio wave lens for transmitting or receiving the radio waves, wherein each primary feed includes a dielectric-loaded waveguide antenna where a dielectric body is loaded at an end opening of a waveguide and two of the primary feeds are installed closely and centers of the ends of the dielectric bodies of the two closely disposed primary feeds are disposed at off-centered positions in a direction that the centers are remotely spaced apart from each other to be located off the extension of each waveguide'"'"'s center axis. - View Dependent Claims (13, 15, 19, 23, 27)
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12. A radio wave lens antenna comprising:
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a spherical radio wave lens for focusing radio wave beams; and
primary feeds positioned at arbitrary radio wave focus points of the radio wave lens for transmitting or receiving the radio waves, wherein each primary feed includes a dielectric-loaded waveguide antenna where a dielectric body is loaded at an end opening of a waveguide and two of the primary feeds are installed closely and centers of the ends of the dielectric bodies of the two closely disposed primary feeds are disposed at off-centered positions in a direction that the centers are remotely spaced apart from each other to be located off the extension of each waveguide'"'"'s center axis. - View Dependent Claims (14, 16, 18, 20, 22, 24, 26, 28, 30)
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Specification