Antenna device and communication equipment using the device

Details Antenna device and communication equipment using the device Antenna device and communication equipment using the device

2005-05-31

2005-05-31

Wimer, Michael C. (Department: 2828)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S895000, C455S575700

Reexamination Certificate

active

06900768

ABSTRACT:
An antenna device which includes the first antenna element having one end open and the other end connected to a power feeder, and the second antenna element, having both ends open. The second antenna element is disposed on the outer peripheral surface of the first antenna element in insulated state. The other end of the first antenna element is connected to the power feeder through the first ring-shaped conductor.

REFERENCES:
patent: 5451965 (1995-09-01), Matsumoto
patent: 6172646 (2001-01-01), Kawahata et al.
patent: 0508567 (1992-10-01), None
patent: 802577 (1997-10-01), None
patent: 1098387 (2001-05-01), None
patent: 10-190330 (1998-07-01), None
patent: 11-186833 (1999-07-01), None
patent: 2000-278036 (2000-10-01), None
patent: WO 00/30267 (2000-05-01), None
Japanese International Search Report for PCT/JP02/09573, dated Jan. 14, 2003.
English translation of Japanese International Search Report for PCT/JP02/09573, dated Jan. 14, 2003.

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