Chemical and biological sensors, systems and methods based on radio frequency identification
US8475716B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2012 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Oct 18, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25375
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An embodiment of the invention described herein is directed to a detection system utilizing at least one radiofrequency identification (RFID) sensor comprising: an RFID sensor comprising: a substrate; an antenna; a sensor material selected to be sensitive to one of chemical or biological environment; and a reader, wherein said reader is configured to measure a signal in the form of a complex impedance from said RFID tag wherein said signal comprises a plurality of frequencies and a frequency shift of the maximum of the imaginary part of the complex impedance, a frequency shift of the minimum of the imaginary part of the complex impedance, a frequency shift of the maximum of the real part of the complex impedance, and changes in magnitude of the real part of the complex impedance; and, wherein said complex impedance is related to a nature and a concentration of analyte species derived from multivariate analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.