| abstract |
An antenna component (201) with a dielectric substrate and two radiating antenna elements (220; 230) on the surface of the substrate. Each of them covers one of the opposite heads and part of the upper surface of the chip. In the middle of the upper surface between the elements, there remains a narrow slot (260). The lower edge of one of the antenna elements (222) is galvanically coupled to the antenna feed conductor (240) on the circuit board, and at another point to the ground plane (GND), while the lower edge of the opposite antenna element (232), or the parasitic element, is calvanically coupled only to the ground plane. The parasitic element (230) gets its feed through the electromagnetic coupling over said slot, and both elements resonate equally strongly at the operating frequency. The component is preferably manufactured by a semiconductor technique by growing a metal layer on the surface e.g. of quartz substrate and removing a part of it so that the elements remain. The antenna component is very small-sized because of the high dielectricity of the substrate to be used and because the slot between the antenna elements is narrow. The losses of the substrate are relatively low due to the simple field image in the substrate. |