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A New Approach for Passive UHF RFID Sensing

The Internet of Things (IoT) needs sensors. The ever-increasing desire to measure our environment has already cut out the cables from the sensors by means of such technologies as ZigBee and Bluetooth Smart. However, a sensor node's lifetime is usually limited to battery life. This can be extended using expensive energy-scavenging solutions. However, a lot of deployment sites lack potential energy to be scavenged, and the accumulators used with scavengers tend to have a limited amount of charging phases.

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