Electromagnetic tool using slotted point dipole antennas
US12119536B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2023 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Mar 27, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/205
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Slotted dipole antennas for use in an antenna system on a drill collar segment is presented. Dipoles may be placed in slots on the drill collar segment. A dipole consists of a ferrite rod with electric wires placed above and below the ferrite rod. Wires may be connected such that wire current forms a loop around the ferrite rod. When a group of slots are used for an antenna, wire holes are constructed between slots. Effectively a single wire may be used to go above all ferrite rods in the group and then turn to go below all the ferrite rods. Two wire segments are in a wire hole connecting two adjacent slots. Currents in the two segments are the same in magnitudes and flow in opposite directions. There is no net current in wires in a wire hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.