Patent ID: 9130261
Filing Date: 2015-09-08
Classification: H01Q

Abstract:
1. An improved inverted-F antenna, being adapted for wireless communication devices, comprising: a ground plane; a pin, wherein one end of the pin is coupled to a side of the ground plane while extending vertically upward therefrom; a first radiation unit, being of a U shaped structure and connected to the other end of the pin and there is a space formed between the first radiation unit and the ground plane, and the first radiation unit's projection on a plane of the ground plane overlapping the ground plane; a second radiation unit, being shaped like a trapezoid tapering toward the end thereof that is connected to the first radiation unit, and a direction of a tapering end of the second radiation unit being inverse to a direction of an opening of the first radiation unit, and the second radiation unit's projection on the plane of the ground plane overlapping the ground plane, wherein the other end of the second radiation unit not connecting to the first radiation unit is bent toward the ground plane, whereby one part of the second radiation unit is parallel to the ground plane and the first radiation unit, but the other part of the second radiation unit is perpendicular to the ground plane and the first radiation unit; and a periphery of the first radiation unit and a periphery of the second radiation unit do not exceed a periphery of the ground plane; and a feed point, disposed extendingly from an end of the first radiation unit for feeding electrical signals; wherein, the first radiation unit is adapted for transceiving signals of a first band, and the second radiation unit is adapted for transceiving signals of a second frequency band, while the working frequency of the second band is higher than that of the first band.