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Wireless Batteryless Sensors

Khaled Nabil Salama

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Wireless powering enabled enormous applications by removing the last physical connection needed to supply power to wireless systems. So, it enabled a key platform for battery-less, biomedical implantable devices that can be implanted once with no need for further surgeries to replace the sensor or its battery. RFID applications are the most common systems utilizing wireless powering. An On-Chip RF Energy Harvesting module is proposed to deliver power to wireless sensors from incoming RF signals.The proposed RF energy harvesting module includes highly efficient RF rectifier, DC voltage limiter, voltage sensors to enable power management, low dropout regulator (LDO) to provide clean power rail for on-chip transmitter.