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This paper presents a system architecture combining batteryless wireless intermodulation sensors and their associated reader, and analyses the achievable read range of such sensor-reader system. The computed read range is compared to those provided by harmonic and passive UHF RFID sensor systems. Effects of both reader thermal noise and third-order distortion by the reader itself on the read range...
This paper reviews different kinds of passive wireless sensors utilizing the intermodulation communication principle. The reviewed sensor architectures are based either on a mechanical resonator, electrically non-linear sensing element, or on a separate mixer, low-frequency resonance circuit and a sensing element. The benefits and drawbacks of different architectures are compared and some experimental...
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