Antenna and method for steering antenna beam direction
First Claim
Patent Images
1. An antenna comprising;
- an isolated magnetic dipole (IMD) antenna element positioned above a ground plane and forming an antenna volume therebetween;
a first parasitic element positioned outside of said antenna volume and adjacent to said antenna element for providing an electromagnetic coupling therebetween; and
a first active tuning element associated with said first parasitic elementwherein said first active tuning element is adapted to vary a reactance on said first parasitic element for altering a current mode of the antenna.
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Abstract
An antenna comprising an IMD element, and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements.
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Citations
19 Claims
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1. An antenna comprising;
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an isolated magnetic dipole (IMD) antenna element positioned above a ground plane and forming an antenna volume therebetween; a first parasitic element positioned outside of said antenna volume and adjacent to said antenna element for providing an electromagnetic coupling therebetween; and a first active tuning element associated with said first parasitic element wherein said first active tuning element is adapted to vary a reactance on said first parasitic element for altering a current mode of the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An antenna comprising:
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a first antenna element positioned above a ground plane and forming an antenna volume therebetween; a first parasitic element positioned outside of said antenna volume and adjacent to said first antenna element for providing an electromagnetic coupling therebetween; a first active tuning element associated with said first parasitic element, wherein said first active tuning element is adapted to vary a reactance on said first parasitic element for altering a current mode of the antenna; a second parasitic element; and a second active tuning element associated with said second parasitic element;
wherein said second parasitic element and said second active tuning element are positioned within said antenna volume. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification