Patent ID: 7714795

Claim:
A multi-band strip antenna for a communication device, the antenna comprising: a three-dimensional rectilinear antenna substrate having a plurality of substantially planar faces; and a radiation element formed of a plurality of elongated planar conductive segments, each of which is disposed upon at least one face of the three-dimensional rectilinear antenna substrate, a first segment disposed at least on a first face of said substrate, a second segment disposed at least on a second face of said substrate, said second face in orthogonal orientation to said first face, and a third segment disposed at least on a third face of said substrate, said third face in orthogonal orientation to said first face and said second face, such that the plurality of segments are electrically coupled one to another in series, the combined lengths of the segments being selected to be substantially equal to a one-quarter wavelength at a lowest frequency band of two different frequency bands in which the strip antenna is capable of operating and of a length that a zero electrical current point is created at substantially the geometric center of said combined length series coupled segments at a highest frequency band of said two different frequency bands.