| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic sheet the resonance frequency of which is prevented from deviating caused by the variation in magnetic permeability due to unintended division of ferrite, and to provide an antenna module which uses the magnetic sheet, an electronic apparatus loaded with the antenna module, and a method for manufacturing the magnetic sheet.SOLUTION: The magnetic sheet 1 includes a ferrite layer 2 and supports 3, 4. The ferrite layer 2 is made of ferrite and is divided into a plurality of ferrite pieces 2a having thickness in a first direction and having random shapes, in each of which the largest side on a first surface vertical to the first direction is 10 times or less the thickness. The supports 3, 4 support positions of the ferrite pieces 2a in the ferrite layer. Since the ferrite layer 2 has been already divided fully, the ferrite layer is prevented from being divided more, even if stress is applied during the mounting of the ferrite layer 2 or after the mounting. Consequently, resonance frequency deviations due to the variations in magnetic permeability can be prevented. |
