Radio frequency identification tags and systems

By integrating a sensitive element into the antenna structure of the RFID tag and utilizing the physical response characteristics of the antenna, the dual functions of passive tag identification and environmental perception are realized. This solves the problem of insufficient environmental perception capability in existing RFID technology and enables efficient information transmission of passive tags.

CN122197932APending Publication Date: 2026-06-12PEKING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Filing Date
2026-01-27
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing RFID technology has shortcomings in environmental perception capabilities, and the use of active sensors and analog-to-digital converters (ADCs) increases the power consumption and cost of tags, limiting large-scale applications.

⚗Method used

A passive RFID tag was designed, which integrates an antenna structure with sensitive elements. It utilizes the physical response characteristics of the antenna to achieve dual functions of identity recognition and environmental perception. The changes in the physical characteristics of the RF echo reflect environmental data and identity information in real time.

🎯Benefits of technology

It realizes a dual-function RFID tag that can simultaneously complete identity recognition and environmental perception without increasing hardware complexity and power consumption, without the need for an external power supply, thus achieving "dual-carrying" of information.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present disclosure provides a radio frequency identification tag and system, and relates to the technical field of communication. The tag is a passive tag, comprising a chip and an antenna, wherein the antenna is provided with a sensitive element; the antenna is used for sending an activation signal to the chip in response to capturing a query signal emitted by a target electronic device; the chip is used for generating a digital identity signal according to object identity information of a target object in response to receiving the activation signal; the sensitive element is used for generating an analog sensing signal for current surrounding environment state information; and the antenna is further used for emitting a reflected wave integrated with both the digital identity signal and the analog sensing signal to the target electronic device. The tag in the present disclosure reflects current environment data and identity information in real time through the physical characteristic change of the radio frequency echo, and realizes the information "one-wave double load".
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