Antenna device having enhanced reception sensitivity in wide...

Details Antenna device having enhanced reception sensitivity in wide... Antenna device having enhanced reception sensitivity in wide...

2007-12-11

2007-12-11

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Including magnetic material

C343S744000

Reexamination Certificate

active

11361529

ABSTRACT:
An antenna device includes a prism-shaped or plate-shaped base member made of a dielectric or magnetic material, band-shaped first and second radiation conductors wound around the base member and connected to each other, and a third radiation conductor wound around the base member and connected to the second radiation conductor. The first and second radiation conductors include a plurality of divided portions, and the divided first radiation conductor portions are connected in series by first variable capacitance elements, the divided second radiation conductor portions are connected in series by second variable capacitance elements, and a node between the first and second radiation conductors is used as a feeding end.

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European Search Report dated Apr. 6, 2006 from corresponding European Application No. 06003972.4-2220.

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