Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

An RFID Tag Antenna Applied in Dense Environment

A technology for radio frequency identification tags and dense environments, applied in the field of wireless antennas, can solve the problems of low power transmission coefficient and complex structure of tags, and achieve the effects of reduced accuracy and difficulty, less bending times, and simple structure

Active Publication Date: 2021-04-20
HEFEI UNIV OF TECH
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing research, for the application of the tag antenna in a dense environment, it is still improved based on the most widely used tag antenna Alien 9662 in the existing market, and the tag antenna coupling is reduced by shortening the length of the tag antenna. Mutual impedance, so that the influence of mutual interference of tag antennas in dense environments is small, but the structure of the Yagi-Uda antenna used in it is relatively complex, and in dense environments, the power transmission coefficient of tags is still low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An RFID Tag Antenna Applied in Dense Environment
  • An RFID Tag Antenna Applied in Dense Environment
  • An RFID Tag Antenna Applied in Dense Environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Seefigure 1 A radio frequency identification tag antenna applied to a dense environment includes a tag chip 1, a loading strip 6, a radiation patch, and a dielectric substrate 7, a tag chip 1, a loading strip 6, and a radiating patch are fixed to the dielectric substrate 7.

[0032]The radiation patch includes a pair of stepped radiation arm 4, a pair of U-shaped connecting arms 3, a pair of L-shaped connecting arm 2, and a linear connecting arm 5. The straight connecting arm 5 is symmetrical with respect to the symmetric axis axis of the label antenna; a pair of stepped radiation arm 4, a pair of U-shaped connecting arm 3 and a pair of L-shaped connecting arm 2 are located inside the linear connection arm 5, and the loading strip 6 is located in the straight line. The connecting arm 5 is outside.

[0033]Seefigure 2 At both ends of the linear connection arm 5 respectively connected to one end of the U-shaped connecting arm 3, the other end of the U-shaped connection arm 3 is connec...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a radio frequency identification tag antenna applied in a dense environment, and belongs to the technical field of wireless antennas. Including tag chip, loading strip, radiation patch and dielectric substrate; radiation patch includes a pair of stepped radiation arms, a pair of U-shaped connecting arms, a pair of L-shaped connecting arms and a straight connecting arm; the straight connecting arm is relative to the tag antenna The axis of symmetry is symmetrical; a pair of stepped radial arms, a pair of U-shaped connecting arms and a pair of L-shaped connecting arms are all located inside the straight connecting arms, and the loading bar is located outside the straight connecting arms; the loading bar is in the shape of a straight line, And parallel to the straight connecting arm; when the distance between the loading bar and the radiation patch is 2mm, the maximum power transmission coefficient of the radio frequency identification tag antenna of the present invention is greater than 0.7. When the tag antenna of the present invention is in an environment where the distance between tags is relatively large, it also has a relatively wide frequency band and has stable performance. The radio frequency identification tag antenna of the invention has simple structure and good production processability.

Description

Technical field[0001]The present invention belongs to the technical field of wireless antenna, and more particularly to a radio frequency identification (RFID) tag antenna.Background technique[0002]RFIo Frequency Identification, RFID "is a non-contact automatic identification technology that transmits electromagnetic wave signals through the reader antenna, the label antenna receives electromagnetic wave signals and modulated, and reverse the modulated signal back to the reader antenna, completed The process of communication. At present, with the development of technology, since the UHF RFID tag has advantages such as a large number of communications protocols that are easy to manufacture, high reading rate, reading distance far and standardized, it has gradually become the mainstream of current research. However, when the label is in book management, clothing management, it requires a large number of labels and the distance between the label is very close, due to the mutual interfe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/22H01Q1/38H01Q1/50
CPCH01Q1/2225H01Q1/38H01Q1/50
Inventor 佐磊陈昊徐相相姜学义朱良帅何怡刚李兵尹柏强
Owner HEFEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com