Patent ID: 9190730
Filing Date: 2015-11-17
Classification: H01Q,Y10T

Abstract:
1. An antenna comprising: an elongated magnetic core; a secondary magnetic path member disposed near the core, and forming a secondary magnetic path; a spacer disposed between the core and the secondary magnetic path member so as to prevent the core and the secondary magnetic path member from being magnetically coupled; and a coil formed by winding a wire around the core so as to bundle the core and the secondary magnetic path member together, wherein the secondary magnetic path member comprises a thin plate disposed parallel to the core with the spacer provided therebetween, and wherein ends of the secondary magnetic path member are magnetically coupled so as to form a closed magnetic path as the secondary magnetic path, whereby the secondary magnetic path member is disposed so as to enclose the coil and forms a looped magnetic path which allows magnetic flux from the coil to circle.