Utilizing oscillator frequency divider settings as a temperature sensor in radio frequency applications

摘要

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.

主权项

1. A method, comprising:
transmitting, by a reader device, a radio frequency (RF) signal to a tag device, wherein the tag device includes an electronic oscillator configured to generate an oscillator signal with an oscillator frequency and further includes a frequency adjuster configured to adjust the oscillator frequency with a frequency adjustment factor to provide a resulting frequency, wherein the oscillator frequency is dependent on a temperature of the tag device, and wherein the resulting frequency is based on a reference frequency provided by the RF signal; receiving, by the reader device, data from the tag device, wherein the data from the tag device comprises data indicative of the oscillator frequency; and determining, by the reader device, an estimate of the temperature of the tag device based on at least the data and a predetermined relationship between temperature and oscillator frequency.