Stacked soft magnetic inserts and slotted shield designs for titled coil antennas
US11320559B2 · kind B2 · utility
0Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2017 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Feb 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/44
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna assembly includes a tool mandrel having a tool axis, and a coil including a plurality of windings wrapped about the tool mandrel at a winding angle offset from the tool axis. A soft magnetic band radially interposes the coil and the tool mandrel and extends about a circumference of the tool mandrel at a band angle parallel to the winding angle. The soft magnetic band includes a plurality of stacked inserts extending perpendicular to the coil about the circumference of the tool mandrel and each stacked insert includes a plurality of rods positioned end-to-end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.