| 摘要 |
The present invention relates to a miniaturized patch antenna assembly in UHF frequency band. The invention is notably useful in RFID applications. The patch antenna assembly comprises: - a multilayered dielectric substrate including at least a top layer, a middle layer and a bottom layer, - an electrically conductive patch structure on the upper surface of the top layer, said patch structure having a centre point located at the centre of patch structure surface and a feeding point electrically coupled to a feed line, - a ground plane on the lower surface of the bottom layer. According to the invention, it further comprises a slot etched in the patch structure, said slot surrounding the centre point of the patch structure. This slot aims to concentrate the surface current at the centre of the patch structure, which allows reducing its size. |
