Utilizing oscillator frequency divider settings as a temperature sensor in radio frequency applications
US9024727B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2013 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Dec 3, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems for utilizing oscillator frequency divider settings as a temperature sensor are described herein. An example method may involve a reader device transmitting an RF signal to a tag device that includes an electronic oscillator configured to generate an oscillator signal with an oscillator frequency and a frequency adjuster configured to adjust the oscillator frequency with a frequency adjustment factor to provide a resulting frequency, the oscillator frequency being dependent on a temperature of the tag device and the resulting frequency being based on a reference frequency provided by the RF signal. The method may also involve the reader device receiving data from the tag device, the data being indicative of the oscillator frequency. The method may further involve the reader device determining an estimate of the temperature of the tag device based on at least the received data and a predetermined relationship between temperature and oscillator frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.