Antenna for circular polarization, having a conductive base surface
First Claim
1. An antenna for circular polarization, comprising:
- a) an electrical dipole radiator (1);
b) an electrically conductive base surface (2) having a front side and a back side, and having an antenna connection location (12) on said front side, wherein said electrical dipole radiator (1) is coupled to said electrically conductive base surface (2) and runs at a distance along said front side of said electrically conductive base surface (2) and in a plane of symmetry (SE) oriented perpendicular to said electrically conductive base surface (2), wherein said electrical dipole radiator (1) is oriented essentially parallel to the electrically conductive base surface (2),c) a dipole feed line (6) coupled at a first end to said electrical dipole radiator (1), said dipole feed line having a dipole connection location (8) which connects to said electrical dipole radiator (1), wherein said dipole feed line (6) runs in the plane of symmetry SE toward the electrically conductive base surface (2),d) a slot radiator (3) configured in and coupled to said front side of said electrically conductive base surface (2), said slot radiator having a longitudinal expanse (4) along an intersection line between the plane of symmetry SE and said electrically conductive surface (2), said slot radiator (3) comprising;
i) a plurality of longitudinal edges (18);
ii) at least one slot radiator connection location (7);
iii) a plurality of connection points (19, 25) configured to connect said dipole feed line (6) to said slot radiator, said plurality of connection points (19, 25) comprising at least one set of connection points situated at said plurality of longitudinal edges (18) and lying opposite one another wherein said at least one set of connection points (19) are disposed in said at least one slot radiator connection location (7);
e) a combining network (13) comprising a connection between said electrical dipole radiator (1) having said dipole feed line (6), said slot radiator (3), and said antenna connection location (12);
wherein said electrical dipole radiator (1) and said slot radiator (3) are tuned to one another in their resonance frequencies, in terms of magnitude and phase, so that circular polarization exists in a remote field at a frequency at which said radiators are tuned to one another.
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Accused Products
Abstract
An antenna for circular polarization having an electrical dipole radiator which is oriented essentially parallel to an electrically conductive base surface in a plane of symmetry SE oriented perpendicular to the electrically conductive base surface. The dipole is in connection with a slot radiator which is configured in an electrically conductive base surface, with its longitudinal expanse along the intersection line between the plane of symmetry SE and the electrically conductive base surface. The slot radiator connection location is formed by means of connection points situated at the longitudinal edges and lying opposite one another. The electrical dipole radiator and the slot radiator are tuned to one another in their resonance frequencies. The slot radiator and the electrical dipole radiator with dipole feed line are connected with the antenna connection location by way of a combining network, in terms of magnitude and phase, in such a manner that circular polarization exists in the remote field at the frequency at which the radiators are tuned to one another.
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Citations
20 Claims
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1. An antenna for circular polarization, comprising:
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a) an electrical dipole radiator (1); b) an electrically conductive base surface (2) having a front side and a back side, and having an antenna connection location (12) on said front side, wherein said electrical dipole radiator (1) is coupled to said electrically conductive base surface (2) and runs at a distance along said front side of said electrically conductive base surface (2) and in a plane of symmetry (SE) oriented perpendicular to said electrically conductive base surface (2), wherein said electrical dipole radiator (1) is oriented essentially parallel to the electrically conductive base surface (2), c) a dipole feed line (6) coupled at a first end to said electrical dipole radiator (1), said dipole feed line having a dipole connection location (8) which connects to said electrical dipole radiator (1), wherein said dipole feed line (6) runs in the plane of symmetry SE toward the electrically conductive base surface (2), d) a slot radiator (3) configured in and coupled to said front side of said electrically conductive base surface (2), said slot radiator having a longitudinal expanse (4) along an intersection line between the plane of symmetry SE and said electrically conductive surface (2), said slot radiator (3) comprising; i) a plurality of longitudinal edges (18); ii) at least one slot radiator connection location (7); iii) a plurality of connection points (19, 25) configured to connect said dipole feed line (6) to said slot radiator, said plurality of connection points (19, 25) comprising at least one set of connection points situated at said plurality of longitudinal edges (18) and lying opposite one another wherein said at least one set of connection points (19) are disposed in said at least one slot radiator connection location (7); e) a combining network (13) comprising a connection between said electrical dipole radiator (1) having said dipole feed line (6), said slot radiator (3), and said antenna connection location (12); wherein said electrical dipole radiator (1) and said slot radiator (3) are tuned to one another in their resonance frequencies, in terms of magnitude and phase, so that circular polarization exists in a remote field at a frequency at which said radiators are tuned to one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification