Patent ID: 8188925

Claim:
A device that is capable of tri-band communication, the device comprising: an antenna assembly, the antenna assembly including: a substrate; a first bent monopole that is disposed on the substrate, the first bent monopole comprising a feedline segment and a first segment; a second bent monopole that is disposed on the substrate, the second bent monopole comprising the feedline segment and the first segment; and a third bent monopole that is disposed on the substrate, the third bent monopole comprising the feedline segment and a second segment; wherein a T-junction is formed by the feedline segment, the first segment, and the second segment and wherein the first segment has a first width and a first end located at the T-junction and a second end located at a branch junction where the first and second bent monopoles branch apart from one another, and wherein the second segment has a second width that is 20% to 40% less than the first width of the first segment; wherein the first bent monopole, the second bent monopole, and the third bent monopole are coplanar and share the feedline segment; and the first bent monopole and the second bent monopole, but not the third bent monopole, share the first segment; and wherein a first combination of a first length and one or more bends of the first bent monopole tune the first bent monopole to substantially match a first bandwidth, a second combination of a second length and one or more bends of the second bent monopole tune the second bent monopole to substantially match a second bandwidth, and a third combination of a third length and one or more bends of the third bent monopole tune the third bent monopole to substantially match a third bandwidth; and wherein the first bent monopole, the second bent monopole, and the third bent monopole form an antenna layout pattern on the substrate, with the antenna layout pattern having a length and a width; and wherein the length is less than 12 millimeters (mm), and the width is less than 12.5 mm, the first bent monopole being located along an exterior edge of the antenna layout pattern.