Abstract: The product comprises a sensor (1) via which a measured quantity that corresponds to reactive resistance can be furnished within a measuring range. The product also comprises a matching network (2) and a surface wave element (3). The sensor (1) is connected to a first reflector (4) of the surface wave element (3) via the matching network (2). The first reflector (4) forms, together with the matching network (2) and the sensor (1), a resonator which, for a value of the measured quantity within the measuring range, has a resonance with regard to a reflection of an acoustic surface wave on the first reflector (4). The invention also relates to a method for determining the measured quantity and to a corresponding system.

Abstract: The product comprises a sensor (1) via which a measured quantity that corresponds to a reactive resistance can be furnished within a measuring range. The product also comprises a matching network (2) and a surface wave element (3). The sensor (1) is connected to a first reflector (4) of the surface wave element (3) via the matching network (2). The first reflector (4) forms, together with the matching network (2) and the sensor (1), a resonator which, for a value of the measured quantity within the measuring range, has a resonance with regard to a reflection of an acoustic surface wave on the first reflector (4). The invention also relates to a method for determining the measured quantity and to a corresponding system.

Abstract: An electrical-technical product has a sensor (1) through which can be supplied a measured variable corresponding to a reactive resistance within a range of measurement, a matching network (2) and a surface acoustic wave (SAW) element in which the sensor is connected via the matching network (2) to a first reflector of the SAW element (3), and the first reflector (4) forms a resonator with the matching network (2) and the sensor (1). The resonator for one value of the measured variable within the range of measurement, is tuned to an acoustic surface wave on the surface wave element (3), in view of a reflection of the surface wave propagating at the first reflector (4). The resonance is determined by a maximum reflectivity of the first reflector (4).

Abstract: A method and device for determining wirelessly at least one object (7) position and/or orientation. An electromagnetic interrogation signal is transmitted via radio signal from an interrogating station (14). Detecting elements (1-3), located on the object (7) and storing power, individually modulate the recorded interrogation signal and forward it, as coded response signals, to the interrogating station (14). There, the position and/or orientation of the object (7) is/are determined from time interval values and/or phase values of each response signal.