Multiband antenna and communication device having the same

Details Multiband antenna and communication device having the same Multiband antenna and communication device having the same

2011-07-12

2011-07-12

Mancuso, Huedung (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

Reexamination Certificate

active

07978140

ABSTRACT:
A multiband antenna for a communication device is disclosed. The multiband antenna comprises a dielectric substrate, a ground portion, and a radiating metal portion. The dielectric substrate comprises two surfaces. The ground portion comprises a first ground plane, a second ground plane, and a connecting metal strip. The first ground plane is on one of the surfaces of the dielectric substrate and has a first connecting point and a shorting point. The second ground plane is near the first ground plane and has a second connecting point. At least one part of the connecting metal strip is on one surface of the dielectric substrate. The connecting metal strip has one end connected to the first connecting point and the other end connected to the second connecting point. The radiating metal portion is connected to the dielectric substrate, without overlapping the first ground plane. The radiating metal portion comprises a radiating section having one end connected to the shorting point and the other end as an open end; and a feeding section having one end connected to a signal source and the other end as an open end, wherein the open end of the feeding section has a spacing of less than 3 mm to the radiating portion.

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patent: 7436360 (2008-10-01), Chen et al.
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patent: 2005/0264455 (2005-12-01), Talvitie et al.
patent: I258891 (1994-04-01), None
patent: I262620 (1994-12-01), None

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