| 摘要 |
An antenna arrangement on a the printed circuit board with at least two magnetic rings and a rectangular ring cross section and lateral magnetic ring surfaces with opposite polarity formed thereby, wherein the magnetic ring surfaces are arranged on the printed circuit board with a distance from one another using a spacer, wherein the opposite polarities of the magnetic ring surfaces are oriented towards each other and the central bore holes of the magnetic ring form a pass through a bore hole in the spacer. This antenna arrangement is configured for a material detector device which facilitates detecting objects made from a predetermined material over a larger distance. Based on its configuration the antenna arrangement is infinitely expandable in its operation by increasing the number of magnetic rings and of the respective spacers. |
