A Wireless Sensor Readout System—Circuit Concept, Simulation, and Accuracy

  title={A Wireless Sensor Readout System—Circuit Concept, Simulation, and Accuracy},
  author={Reinhard Nopper and Remigius Has and Leonhard M. Reindl},
  journal={IEEE Transactions on Instrumentation and Measurement},
In this paper, we present an electronic readout system for wireless passive sensors based on inductively coupled LC resonant circuits. The proposed system consists of a reader coil inductively coupled to the sensor circuit, an analog frontend circuit, and a digital signal processing unit. The analog frontend circuit generates a dc voltage representing the sensor resonance curve. The frequency of the reader coil driving signal is continuously readjusted by the digital signal processing unit… CONTINUE READING
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