Antenna device and radio apparatus operable in multiple...

Details Antenna device and radio apparatus operable in multiple... Antenna device and radio apparatus operable in multiple...

2008-06-19

2011-11-22

Owens, Douglas W (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000, C343S741000, C343S846000, C343S895000

Reexamination Certificate

active

08063827

ABSTRACT:
An antenna device usable in a radio apparatus including a printed board includes a ground conductor of the printed board, a first partial element, a second partial element and a parasitic element. The first partial element is shaped into an area having a first side facing a side of the ground conductor and a second side directed to cross the side of the ground conductor, and is provided with a feed portion around a first end of the first side being closer to the second side. The second partial element branches off from the first partial element around one of two ends of the second side being farther from the feed portion, and is directed almost against a direction from the feed portion to a second end of the first side being farther from the second side. The parasitic element has an end grounded around the second end.

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