Abstract
A low-power dual-mode receiver is presented for ultra-high-frequency (UHF) radio frequency identification (RFID) systems. The reconfigurable architecture of the tag is proposed to be compatible with low-power and high-sensitivity operating modes. The read range of RFID system and the lifetime of the tag are increased by photovoltaic, thermoelectric and RF energy-harvesting topology. The receiver is implemented in a 0.18-μm standard CMOS process and occupies an active area of 0.65 mm × 0.7 mm. For low-power mode, the tag is powered by the rectifier and the sensitivity is −18 dBm. For high-sensitivity mode, the maximum PCE of the fully on-chip energy harvester is 46.5% with over 1-μW output power and the sensitivity is −40 dBm with 880 nW power consumption under the supply voltage of 0.8 V.
Highlights
With the emerging development of the Internet of things (IoT), wireless sensor networks (WSN)are widely used, such as the wearable health monitoring system and environmental monitoring system.Radio frequency identification (RFID) science has the advantages of standardization identification, low cost and small form factor, there is growing interest in combining radio frequency identification (RFID) and on-chip sensors into smart sensor nodes [1,2,3,4,5,6]
Radio frequency identification (RFID) science has the advantages of standardization identification, low cost and small form factor, there is growing interest in combining RFID and on-chip sensors into smart sensor nodes [1,2,3,4,5,6]
The passive RFID tags, whose maximum read rage is limited within 12 m, are powered by the radiofrequency frequency identification identification (RF) energy radiated from the reader [1]
Summary
With the emerging development of the Internet of things (IoT), wireless sensor networks (WSN). The power consumption of the receiver is several microwatts; the lifetime of the battery is limited In these years, the high-performance transceivers are proposed and implemented in RFID tags to further extend the read range up to over 100 m [5,6,7,8]. The maximum read range of passive-receiving mode is determined by the power consumption of the tag and the sensitivity is typically between −15 dBm and −20 dBm. For backscatter operating. The maximum read range of passive-receiving mode is determined by the power consumption of the tag and the sensitivity is typically between −15 dBm and −20 dBm. For backscatter operating mode, mode, the the RF.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
