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US 8,717,241 B2Granted
Antenna with active elements
AssigneeEthertronics, Inc.
InventorsJeffrey Shamblin, Chulmin Han, Rowland Jones, Sebastian Rowson, Laurent Desclos
Life of this patent
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Abstract
A multi-frequency antenna comprising an IMD element, one or more active tuning elements and one or more parasitic elements. The IMD element is used in combination with the active tuning and parasitic elements for enabling a variable frequency at which the antenna operates, wherein, when excited, the parasitic elements may couple with the IMD element to change an operating characteristic of the IMD element.
Claims15
An antenna adapted for active frequency shifting, comprising:
- an antenna element disposed above a ground plane and forming an antenna volume therebetween, the antenna element comprising a slotted portion, wherein said slotted portion extends to said ground plane to form a slotted volume;
- a parasitic element positioned within said antenna volume and between the ground plane and the slotted region, the parasitic element being contained within said slotted volume;
- and
- an active tuning element coupled to said parasitic element, said active tuning element adapted for one or more of:
- switching said parasitic element to ground, or dynamically varying a reactive load about said parasitic element for actively shifting a frequency response associated with the antenna.
2 more elements
Dependencies are inferred from the claim text.