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US 2009/0051611 A1Published application
Antenna with active elements
AssigneeEthertronics, Inc.
InventorsJeff 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, active tuning elements and 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.
Claims20
A multi-frequency antenna comprising;
- an Isolated Magnetic Dipole™ (IMD) element;
- one or more parasitic elements;
- and
- one or more active tuning elements;
- wherein the active elements are positioned off the IMD element.
2 more elements
A method for forming an antenna with variable frequency, comprising:
- providing an IMD element above a ground plane;
- positioning a parasitic element above the ground plane;
- and
- positioning at least one active tuning element off the IMD element.
1 more element
An antenna arrangement for a wireless device, comprising;
- an IMD element disposed on a substrate;
- and
- one or more parasitic elements adapted to alter a field generated by the IMD element;
- one or more active tuning elements located off the IMD element.
1 more element
Dependencies are inferred from the claim text.