Minimum redundancy spacing functions for surface acoustic wave (SAW) sensor devices
US10429355B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2016 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Jul 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A surface acoustic wave sensor system for determining environmental conditions on a substrate. The system comprises an interrogator for producing an RF interrogating signal transmitted by an antenna to an interdigital transducer mounted on the substrate for producing an incident surface acoustic wave responsive to the interrogating signal. A plurality of reflector arrays mounted on the substrate produce a like plurality of reflected surface acoustic waves; a spacing between adjacent ones of the plurality of reflector arrays comprising a non-uniform distance. The plurality of reflected surface acoustic waves are responsive to the environmental condition and exhibit a characteristic from which the environmental condition can be determined by a processing component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.