A multi-band adaptive RFID chip and a use method thereof

Abstract

The invention discloses a multi-band adaptive RFID chip and a use method thereof. A multi-point coupling antenna contact group is connected with a plurality of groups of antennas with different frequency bands; When a pulse signal of an external reader-writer reaches the chip, the pulse signal is converted into pulse signal; the antenna of the corresponding frequency band obtains a carrier signaland transmits the carrier signal to the chip; the multi-band coupling channel module carries out co-frequency resonance to open a channel of a corresponding band; energy and POR signals required during working are provided for each part of circuit in the RFID chip; Each part of circuit synchronously starts to work, clock signals needed by normal work of the circuit are extracted from carrier signals, instructions and data on a carrier wave are demodulated to be processed by a digital module, communication confirmation is carried out according to the instructions, to-be-sent data are modulated,the modulated data are transmitted back to an external reader-writer through a corresponding frequency band channel, and read-write operation is completed. The chip can automatically adapt to variousreaders with different frequencies and different distances, can meet the requirements of different scenes at the same time, and overcomes the defect that an existing chip cannot be compatible with aplurality of application scenes.

Description

【Technical field】 [0001] The invention relates to a multi-band self-adaptive radio frequency chip technology, in particular to a radio frequency chip technology that can automatically adapt to different frequencies, different reading and writing distances, and can be read and written in batches. 【Background technique】 [0002] At present, all walks of life are rapidly transforming and upgrading to the direction of intelligent automation. In daily applications such as intelligent production lines, intelligent warehousing, intelligent sales, and consumers' anti-counterfeiting and traceability verification of commodities, RFID chip technology is widely used. All kinds of existing RFID chips in the world only have a single working frequency and read-write distance. For example, a 930MHz UHF chip can only communicate with RFID-specific mid-range readers on production lines and warehousing logistics, but cannot Communicate with short-distance mobile terminals such as NFC mobile ph...

AI Technical Summary

Problems solved by technology

[0003] The application scenarios cannot be used universally, not only cannot meet the usage needs of different scenarios, but also because the data in the chip cannot be shared among the nodes, there is a fault in the entire data chain, and it is impossible to integrate production, warehousing logistics, sales, consumption, etc. The whole chain of links is opened up, and there are isolated islands of information between each scene, which seriously restricts the seamless operation of the whole process of the intelligent automation system

[0004] At present, many chip companies in the world are trying to solve the above problems, but due to the incompatibility between various frequency bands, various standard chips, and various corresponding reading and writing devices, as well as the complexity of chip design, wafer testing, etc. Restricted by conditions such as high difficulty and high cost, the above problems have basically not been effectively solved so far

Images