Patent ID: 6597317
Filing Date: 2003-07-22
Classification: H01Q

Abstract:
An antenna structure comprising a ground plane, a radiator located at a distance from the ground plane, an insulating layer between said ground plane and said radiator, at least one feed point for feeding a signal to said radiator, and at least one ground point for grounding the radiator to the ground plane, wherein the radiator comprises at least one groove comprising an open end and a closed end, the groove being arranged at least partly between said at least one feed point and said at least one ground point such that a line segment to be created between said feed point and said ground point cuts said groove, whereby a smaller portion of the groove is arranged on that side of the line segment cutting the groove on which the open end of the groove is provided, and a larger portion of the groove is provided on the opposite side of the line segment cutting the groove, on which side the closed end of the groove is arranged.