| 摘要 |
The device (1) has an antenna (2) providing an electrical quantity modulated in amplitude with information at an output side. A resistive element (3) i.e. thermistor, is coupled to receive an antenna output. An evaluation unit (4) is connected downstream to the element to evaluate a modification of a physical parameter e.g. light intensity, of the element in comparison to a load with an unmodulated electrical quantity. The unit varies a signal related to the parameter due to the amplitude modulation of the electrical quantity and provides the information at an output of the unit. Independent claims are also included for the following: (1) a system with a transmitter device that records data or commands of a sensor or input device (2) a method for energy-saving reception of a signal having an amplitude that has been modulated with information in a receiver device. |
