| 摘要 |
Disclosed is an antenna arrangement on a printed circuit board with at least two magnetic rings which have a rectangular ring cross section and external magnetic ring surfaces with opposite polarities formed thereby, wherein the magnetic ring surfaces are arranged on the printed circuit board to be spaced apart from each other by a predetermined distance using a spacer, the opposite polarities of the magnetic ring surfaces are oriented toward each other, and the central hole of the magnetic ring forms a through hole through a hole in the spacer. The antenna arrangement is configured for a material detector device which facilitates the detection of an object made of a predetermined material over a long distance. Based on this configuration, the antenna arrangement can infinitely expand operations by increasing the number of the magnetic rings and the number of its spacers. Due to the small volume, the antenna arrangement can be easily integrated with an existing device and manufactured to have price competitiveness. |
