Antenna with active elements

Details Antenna with active elements Antenna with active elements

2007-08-20

2010-11-09

Le, HoangAnh T (Department: 2821)

Communications: radio wave antennas

Antennas

With variable reactance for tuning antenna

C343S702000, C343S895000

Reexamination Certificate

active

07830320

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.

REFERENCES:
patent: 6765536 (2004-07-01), Phillips et al.
patent: 2004/0027286 (2004-02-01), Poilasne et al.
patent: 2005/0192727 (2005-09-01), Shostak et al.
patent: 2005/0275596 (2005-12-01), Harano
patent: 2006/0220966 (2006-10-01), Sarychev et al.
patent: 2007/0069958 (2007-03-01), Ozkar
patent: 2008/0001829 (2008-01-01), Rahola et al.
Rowson, Sebastian, Gregory Poilasne, and Laurent Desclos, “Isolated Magnetic Dipole Antenna: Application to GPS,” Microwave and Optical Technology Letters, vol. 41, No. 6, Jun. 20 2004.
International Search Report for PCT Application No. PCT/US2008/073612.

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