A Multifrequency Passive Sensing Tag With On-Chip Temperature Sensor and Off-Chi

Abstract

State-of-the-art passive RFID tags are limited in terms of functionality and operating range due to the limited power that can be converted from the electromagnetic field. This is why state-of-the-art wir eless sensor systems are mostly battery-based if a high operating range is required. The proposed ultralow-power on-chip sensor u nit and off-chip sensor interface which provides enough energy to supply various sensors with a power consumption up to the milliwatt range make it possible to remote