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US 7,830,320 B2Granted
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.
Claims6
An antenna arrangement for a wireless device, comprising;
- an IMD element disposed on a substrate;
- a first parasitic element having an elongated portion extending from a first vertical connector to a first free end;
- a second parasitic element connected to said first parasitic element, said second parasitic element having an elongated portion extending from a second vertical connector to a second free end;
- and
- one or more active tuning elements located on the parasitic elements for adjusting the frequency response of the antenna;
- wherein said second parasitic is disposed above said first parasitic for providing multiple levels of tuning;
- and
- wherein said first and second parasitic elements are adapted to alter a field generated by the IMD element.
5 more elements
An antenna arrangement for a wireless device, comprising:
- a first active tuning element positioned on an antenna element, and
- a second active tuning element positioned on a parasitic element,
- wherein the first active tuning element provides adjustment of the antenna frequency, and
- wherein the second active tuning element provides adjustment of the coupling between the antenna element and the parasitic element.
1 more element
Dependencies are inferred from the claim text.