ELECTROMAGNETIC RESONATOR PRESSURE SENSOR

摘要

The invention relates to a pressure sensor including an electromagnetic resonator with waveguide having a dielectric material with a dielectric permittivity that varies with temperature. There is an excitation circuit configured to propagate an electromagnetic field through the resonator and a device for heating the resonator. There is also a device for detecting the electromagnetic resonant frequency of the resonator and a device for determining the pressure of the gas surrounding the sensor as a function of the detected resonant frequency of the resonator.