Radio-interrogated surface-wave technology sensor

A sensor arrangement, comprising:

• a surface-wave arrangement having surface-wave structures and an antenna;
• a sensitive impedance element as a sensor part;
• a radio frequency transmitter and receiver with radio antenna and electronic evaluation device:
• the impedance element, which is exposable to an effect to be detected by the sensor part, being electrically connected to at least one of the surface-wave structures;
• and
• the transmitter being structured for radio transmission of an interrogation pulse and the receiver with its evaluation device being structured for radio reception and for qualitative/quantitative evaluation of a change, influenced by the effect on the impedance element, in the impulse response of the surface-wave arrangement.