UHF RFID tag for marking underground assets and locations and method of using same
US10204298B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2017 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | May 25, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07784
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A marker for locating and identify assets which includes an ultra-high frequency (UHF) radio frequency identification (RFID) tag optimized for use below ground and able to more effectively communicate with a RFID reader through a lossy medium such as soil and air. The markers include a reflector which is sized relatively larger than the tag to help focus the forward pattern of the tag more tightly in a forward direction normal to the spiral surface. In addition, the tag includes a chip configured for the soil in which it is to be buried, and an antenna polarized to match the polarization of an RFID reader antenna that is part of a system that includes the marker and reader.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.