PASSIVE RFID TAG WITH EMBEDDED SENSOR INTERFACE

Bo Wang (Inventor)

Research output: Patent

Abstract

A CMOS analog sensor interface circuit embedded in a passive RFID platform can provide accurate data conversion from analog signals to their digital representations. This interface can also utilize the RFID platform to achieve wireless data transmission. The disclosed sensor interface circuit includes signal filtering, signal amplification, as well as signal digitization. These circuits are all designed under the constraints of low-power operation on a noisy silicon substrate. By using the disclosed circuit design, fully passive wireless sensing network that can integrate with heterogeneous sensors (resistance, voltage, current types) can be designed. The advantages of low-cost, small feature size, and the ability to interface with analog sensors can enable large-scale deployment of such kind of RFIDs, both for consumer electronics like in-door monitoring and industrial sensing applications like the grid, electric vehicle, motor, and other critical infrastructures.

Original languageEnglish
Patent numberUS2022366203
IPCG06K 19/ 07 A I
Priority date27/07/22
Publication statusPublished - 17 Nov 2022

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