Reducing coupling of RF interrogated SAWs to external bodies
US7224100B2 · kind B2 · utility
2Cited by
12References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Oct 14, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an apparatus and methodology for providing reduced coupling of radio frequency (RF) interrogated surface acoustic wave (SAW) based sensors to external bodies. Coupling, and therefore electrical loading of the sensor element, is reduced by providing an electrically conductive housing surrounding the SAW sensor element and by electrically coupling one terminal of the SAW sensor element to the electrically conductive housing. Electrical connection to an additional terminal of the SAW sensor element is provided by way of an electrically isolated connection through the electrically conductive housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.