Patent ID: 8493184

Claim:
A method for remote measuring a physical variable comprising transmitting an RF signal, by an RF transceiver, to an RF transponder comprising a dielectric material having a dielectric property which is dependent on said physical variable according to a first function and which dielectric material is exposed to said physical variable to be measured, wherein the dielectric property varies with variations in the physical variable as a result of direct exposure to an environment defining the physical variable, the transponder being arranged to receive the signal transmitted by the transceiver; receiving a reflection signal, by the RF transceiver, that is reflected from the RF transponder, said reflection signal being a signal which is dependent on the signal transmitted by the transceiver and on the actual dielectric property according to a second function; comparing, by a processing means, the signal transmitted by the transceiver and the reflection signal received from the transponder; and converting, by the processing means, the comparison result into a value which is representative for the physical variable to be measured by applying said first function and second function.