| 发明名称 | Portable apparatus and feed system | ||
| 摘要 | A portable apparatus includes a case, a coil situated inside the case, a circuit disposed inside the case to receive power based on a first frequency via the coil and to perform communication based on a second frequency higher than the first frequency, and a magnetic shield having a first portion and a second portion stacked one over another in a direction perpendicular to the coil between the coil and an inside of the case, the second portion being closer to the coil than the first portion, wherein permeability of the first portion is higher than permeability of the second portion situated toward the coil with respect to the first frequency. | ||
| 申请公布号 | US9362985(B2) | 申请公布日期 | 2016.06.07 |
| 申请号 | US201313901028 | 申请日期 | 2013.05.23 |
| 申请人 | FUJITSU LIMITED | 发明人 | Uchida Akiyoshi;Taguchi Masakazu;Shimokawa Satoshi;Matsui Kiyoto;Kawano Hiroyasu |
| 分类号 | H01F27/42;H04B5/00;H01F27/36;H01F38/14;H02J7/02;G06K7/10 | 主分类号 | H01F27/42 |
| 代理机构 | Fujitsu Patent Center | 代理人 | Fujitsu Patent Center |
| 主权项 | 1. A portable apparatus, comprising: a case; a coil situated inside the case; a circuit disposed inside the case to receive power based on a first frequency via the coil and to perform communication based on a second frequency higher than the first frequency; and a magnetic shield having a first portion and a second portion stacked one over another in a direction perpendicular to the coil between the coil and an inside of the case, the second portion being closer to the coil than the first portion, wherein permeability of the first portion is higher than permeability of the second portion situated toward the coil with respect to the first frequency, and the permeability of the first portion is lower than the permeability of the second portion situated toward the coil with respect to the second frequency, the second frequency being higher than the first frequency. | ||
| 地址 | Kawasaki JP | ||