Digital baseband processor for passive RFID (radio frequency identification) electronic tag

Abstract

A digital baseband processor for a passive RFID (radio frequency identification) electronic tag comprises a decoder module, an instruction analysis module, a cyclic checking module, a state machine control module, a storage control module, an on-chip sensor interface module, an external sensor interface module, a power management module, an anti-collision counting module and a coder module, wherein the instruction analysis module and the cyclic checking module are connected with the decoder module, the state machine control module is connected with the instruction analysis module, the storage control module, the on-chip sensor interface module, the external sensor interface module, the power management module and the anti-collision counting module are connected with the state machine control module, and the coder module is connected with the cyclic checking module. The passive RFID electronic tag can be connected with both an external sensor and an on-chip sensor, and data interaction is performed.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to a passive RFID electronic tag digital baseband processor. The passive RFID electronic tag digital baseband processor can be applied to chip circuit systems with low power consumption requirements, such as passive UHF RFID electronic tag chip systems. Background technique [0002] RFID electronic tags have been widely used in logistics management, public transportation and other fields due to their low cost, long reading distance, and fast reading speed. With the increasingly broad application fields of RFID electronic tags, RFID electronic tags not only have the functions of identifying targets and reading and writing target data, but also can realize the functions of environmental perception and environmental monitoring by integrating or external sensors. Through the sensor interface module circuit, the RFID electronic tag can be connected with a variety ...

AI Technical Summary

Problems solved by technology

Under CMOS process conditions, some sensors can be integrated in RFID electronic tag chips. Due to the limitation of process conditions, some non-CMOS process sensors are difficult to integrate in tag chips.

In addition, due to the limiting factor of chip power consumption, integrating multiple sensors in the passive RFID electronic tag chip will increase the working power consumption of the overall tag, which will have a greater impact on the working distance of the passive RFID electronic tag

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