Frame-suspended magnetoelastic resonators
US10557898B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2015 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Aug 29, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/063
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetoelastic tag includes a frame-suspended magnetoelastic resonator that combines a strong resonant response with a relatively small resonator, enabling magnetoelastic sensor use in a variety of inconspicuous applications and/or small packages. The resonator is suspended with respect to a substrate, which reduces, minimizes, or eliminates interaction between the substrate and resonator. Signal strength is thereby enhanced, thereby allowing miniaturization while maintaining a measurable response to the interrogation field. The resonator can have a hexagonal shape and/or be suspended at particular locations about its perimeter to promote signal generation in a direction different from that of the interrogation field. A sensor can include one or more frame-suspended resonators, which can be arranged in an array, stacked, or randomly where a plurality of resonators is employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.