Patent ID: 7978140

Claim:
A multiband antenna for a communication device, the multiband antenna comprising: a dielectric substrate comprising two surfaces; a ground portion comprising: a first ground plane on one surface of the dielectric substrate, the first ground plane having a first connecting point and a shorting point; a second ground plane near the first ground plane, the second ground plane having a second connecting point; and a connecting metal strip having one end connected to the first connecting point and another end connected to the second connecting point, with at least one part of the connecting metal strip on one surface of the dielectric substrate; and a radiating metal portion on one surface of the dielectric substrate, wherein the radiating metal portion is not overlapping the first ground plane, the radiating metal portion comprising: a radiating section having one end connected to the shorting point and another end as an open end; and a feeding section having one end connected to a signal source and another 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.