Collocated coil antennas incorporating a symmetric soft magnetic band
US10024996B2 · kind B2 · utility
3Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2015 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Oct 12, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An antenna assembly includes a tool mandrel having a tool axis, and a plurality of coils are collocated about the tool mandrel and each include a plurality of windings wrapped about the tool mandrel. A soft magnetic band radially interposes the plurality of coils and the tool mandrel and includes a plurality of inserts that form two or more annular arrays axially spaced from each other and extend about the tool mandrel at an angle orthogonal to the tool axis. The inserts in each annular array are circumferentially spaced from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.