Ultrahigh-frequency radio frequency recognition electronic tag of intelligent traffic system

Abstract

The invention discloses an ultrahigh-frequency radio frequency recognition electronic tag of an intelligent traffic system. The ultrahigh-frequency radio frequency recognition electronic tag comprises a substrate, a tag antenna and an ultrahigh-frequency radio frequency recognition chip, the substrate comprises a first surface and a second surface corresponding to the first surface, a tag antenna structure is arranged on the substrate and comprises multiple sub structure sections, and the ultrahigh-frequency radio frequency recognition chip is arranged on a feeding port of the tag antenna structure. The ultrahigh-frequency radio frequency recognition electronic tag has characteristics of resisting metal interference and linear polarization, and has a characteristic of remote reading, and electronic tags meeting 902-928MHz frequency range optimal impedance matching can be formed.

Description

technical field [0001] The present invention relates to an ultra high frequency (Ultra High Frequency, UHF) radio frequency identification (Radio Frequency Identification, RFID) electronic tag, in particular to an ultra high frequency radio frequency identification electronic tag for an intelligent transportation system. Background technique [0002] Radio frequency identification technology has the advantages of fast identification, long-distance identification and multi-target identification, and is widely used in intelligent transportation in the field of intelligent transportation. By installing a radio frequency identification electronic tag with a motor vehicle number plate on the motor vehicle, and installing a radio frequency identification reader above the road, when the motor vehicle passes through the radio frequency identification reading and writing work area, the radio frequency identification tag installed on the motor vehicle stores The data is read out, thus...

AI Technical Summary

Problems solved by technology

[0004] The reading distance of existing electronic tags used in intelligent transportation systems is mostly concentrated below 15 meters, which can basically meet the basic applications of intelligent transportation, but its performance still needs to be improved; the anti-metal background interference characteristics of electronic tags usually rely on electronic tags The thickness of the back is raised to avoid direct contact between the electronic label and the metal, but this method will cause the overall thickness of the label to be more than 1 cm

Images