Wireless cylindrical shell passive LC sensor
US10240994B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Sep 15, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0247
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor includes two coaxial RF shielding members arranged to create a coaxial RF shielding structure that is electrically open and is formed from partially enclosed cylindrical shells. The RF shielding members are spaced from one another. The sensor also includes one or multiple electrically conductive coaxial coils between the coaxial RF shielding members. This configuration creates an LC circuit without requiring a separate capacitor electrically connected to the inductor. The RF shielding structure minimizes the surrounding tissue effects (e.g., parasitic capacitance), which improves the overall accuracy of the sensor. The LC circuit also can be remotely interrogated by external reader.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.