A Low Voltage Low Power RF/Analog Front-end Circuit for Passive UHF RFID Tag
10-10-07 15:33
Age: 1 yrs
BY: CHE, WENYI; YAN, NA; WANG, XIAO; MIN, HAO
This
paper presents a low voltage low power RF/analog front-end circuit for
passive ultra high frequency (UHF) radio frequency identification
(RFID) tag. Temperature compensation is achieved by a reference
generator using sub-threshold techniques which requires lower supply
voltage than conventional bandgap circuit. Some novel structures are
developed to construct the building blocks, including a zero static
current power-on reset circuit and a voltage regulator. The RF/analog
front-end circuit is implemented with digital base-band and EEPROM in
0.18 μm CMOS EEPROM technology. Measurement results show that the tag
has a minimum supply voltage requirement of only 0.75 V.