Passive radio frequency identification tag

Abstract

The invention relates to the field of radio frequency identification (RFID) and provides a passive radio frequency identification tag. The tag comprises an antenna, a chip and a substrate. The substrate which is in rectangle arrangement accommodates the antenna and the chip, wherein the antenna is matched with the chip. The antenna comprises a short circuit ring and a dipole, wherein the short circuit ring is arranged on the bottom of the substrate. The dipole is provided with a left arm and a right arm. The left arm is formed by two square waves and a top loading, wherein the tail ends of the two square wave sections are in quadrature connection; one square wave is connected with the short circuit ring; and the other square wave is connected with the top loading which is rectangular in shape. The left arm and the right arm are in mirror image arrangement. The chip is positioned on the short circuit ring near the edge of the substrate. The passive radio frequency identification tag is pasted on an object during usage; the chip is positioned at the place, near the edge of the substrate, of the tag, so that bar codes, characters, patterns and the like information can be printed on the back of the tag conveniently and the chip can be prevented from being crushed during printing, and the tag can be applied to various occasions conveniently.

Description

Technical field: [0001] The invention relates to a passive electronic tag, which belongs to the technical field of microwave communication and is suitable for radio frequency identification within the frequency range of 800MHz~1GHz Background technique: [0002] In recent years, with the development of RFID, more and more electronic tags are used in the field of logistics. At the same time, with the differentiation of regional prices, driven by interests, some dealers of valuables are also increasingly popular. It is particularly important to carry out logistics tracking and anti-counterfeiting. UHF electronic tags have the advantages of high security, high stability, and long recognition distance, and can be easily applied to logistics tracking. At present, including some well-known wineries and tobacco factories in China, they have begun to pay attention to the problem of high-efficiency logistics tracking. However, most of the current UHF labels place the chip near the c...

AI Technical Summary

Problems solved by technology

At present, including some well-known wineries and tobacco factories in China, they have begun to pay attention to the problem of high-efficiency logistics tracking. However, most of the current UHF labels place the chip near the center of the label, which is not conducive to printing barcodes on the back of the label. Text, pattern and other information

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