Antenna assemblies for wireless communication devices

Details Antenna assemblies for wireless communication devices Antenna assemblies for wireless communication devices

2006-01-17

2006-01-17

Nguyen, Hoang V. (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S702000

Reexamination Certificate

active

06987494

ABSTRACT:
An antenna assembly for a cellular telephone, includes a solid dielectric core, and a two-terminal balanced antenna assembly, including an electrical conductor on the solid dielectric core; the electrical conductor being configured and dimensioned to be matched to the operating frequency band of the cellular telephone communication band and terminating at each of its opposite ends in a common feed point connection such as to provide a two-terminal balanced antenna assembly having an isotropic radiation pattern and reduced electromagnetic field radiation. In two described embodiments, the electrical conductor is configured to define two orthogonal coils; and in a third described embodiment, it is configured to define an electrically-conductive wire extending axially through the core, and an electrically-conductive helix extending around the outer surface.

REFERENCES:
patent: 4287603 (1981-09-01), Moser
patent: 6538616 (2003-03-01), Bedard
patent: 6690336 (2004-02-01), Leisten et al.
patent: 6873302 (2005-03-01), Welsh

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