Antenna apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorMinoru Hasegawa
Life of this patent
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Abstract
An antenna apparatus is provided, which removes dead directions, and at the same time, has a suppression means for easily suppressing the change of an antenna directivity pattern caused by the effect of a feed line or a radome and an improvement means for simply improving the VSWR deterioration caused by the effect of a reflector or the radome. The antenna apparatus includes a sleeve antenna connected to a coaxial cable and a reflector in the shape of a cone, the sleeve antenna including a central conductor and a sleeve, in which the sleeve antenna is arranged in a concave portion of the cone so that the central conductor is aligned with a central axis of the cone, and a top end of the central conductor is separate from a vertex portion of the cone.
Claims10
An antenna apparatus comprising:
- a sleeve antenna connected to a coaxial cable, the sleeve antenna including a central conductor and a sleeve;
- a reflector having a cone shape;
- an impedance matching disk arranged at the central conductor of the sleeve antenna and along the central axis of the reflector;
- and
- an interference suppression disk arranged at the coaxial cable of the sleeve antenna and along the central axis of the reflector,
- wherein the sleeve antenna is arranged in a concave portion of the reflector, the central conductor is aligned with a central axis of the reflector, and a top end of the central conductor is separate from a vertex portion of the reflector.
Dependencies are inferred from the claim text.