| 总结: | A low-power frequency-conversion based temperature sensor interface optimized for passive
UHF RFID applications have been designed and implemented. The interface is based on a
reference capacitor that is charged by a temperature dependent current and discharged by
a hysteresis loop. The circuit has been implemented in a standard CMOS 180nm process.
The post-layout simulations show that the presented architecture is able to compensate for
variations on the bandgap reference and cover a wide temperature range (140oC) with minimum
active area (0:019mm2), reduced power consumption (-= 6:5gammaW), and reduced effect of PVT
variations, accomplishing the design objectives.
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