Antenna device

Details Antenna device Antenna device

2006-04-18

2006-04-18

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

Loop type

C343S742000, C343S702000

Reexamination Certificate

active

07030833

ABSTRACT:
An antenna device includes a ground plane, a first radiation element, and a second radiation element that is entirely disposed within the first radiation element. Of the first radiation element, a portion from a first end portion to a first bending portion electromagnetically couples with, of the second radiation element, a portion from a first end portion to a first bending portion. Further, of the first radiation element, a portion from a second end portion to a second bending portion electromagnetically couples with, of the second radiation element, a portion from a second end portion to a second bending portion. This structure enables the second radiation element to be resonant with the first radiation element.

REFERENCES:
patent: 5583523 (1996-12-01), Wallace, Jr.
patent: 5847683 (1998-12-01), Wolfe et al.
patent: 6680708 (2004-01-01), Yamaki
patent: 2002-290138 (2002-10-01), None

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