| 发明名称 | Extended range EMF antenna | ||
| 摘要 | An antenna for use in an asset-identification system. The antenna includes a plurality of electrically conductive coils electrically connected in parallel. The coils are physically aligned along a common axis. The coils are offset along the common axis by a distance selected to reduce the mutual inductance between the electrically conductive coils, while allowing the signals from the electrically conductive coils to add together. | ||
| 申请公布号 | US8960546(B2) | 申请公布日期 | 2015.02.24 |
| 申请号 | US201314045221 | 申请日期 | 2013.10.03 |
| 申请人 | National Oilwell Varco, L.P. | 发明人 | Streater Jessie Darrell |
| 分类号 | G06K19/00;G06K7/10;H01Q7/08;H01Q1/22 | 主分类号 | G06K19/00 |
| 代理机构 | Conley Rose, P.C. | 代理人 | Conley Rose, P.C. |
| 主权项 | 1. An antenna for use in an asset-identification system, the antenna comprising: a first plurality of electrically conductive coils electrically connected in parallel and physically aligned along a common axis, wherein the electrically conductive coils are offset along the common axis by a distance of approximately 10 inches or more, wherein the distance reduces mutual inductance between the electrically conductive coils, while allowing signals from the electrically conductive coils to add together. | ||
| 地址 | Houston TX US | ||