Communications: radio wave antennas – Antennas – Spiral or helical type
Reexamination Certificate
2010-09-29
2011-12-13
Le, Hoanganh (Department: 2821)
Communications: radio wave antennas
Antennas
Spiral or helical type
C343S7000MS
Reexamination Certificate
active
08077116
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.
REFERENCES:
patent: 5966097 (1999-10-01), Fukasawa et al.
patent: 7271770 (2007-09-01), Washiro
patent: 7372406 (2008-05-01), Shiotsu et al.
patent: 2003/0098812 (2003-05-01), Ying et al.
patent: 2006/0152411 (2006-07-01), Iguchi et al.
Desclos Laurent
Han Chulmin
Jones Rowland
Rowson Sebastian
Shamblin Jeffrey
Coastal Patent Agency
Ethertronics Inc.
Le Hoang-anh
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