Compact uhf RFID foldable anti metal tag antenna

An anti-metal tag, foldable technology, applied in antennas, antenna parts, antenna grounding devices, etc., can solve the problems affecting the promotion of RFID technology, the performance of tags cannot meet the needs, and restricting the rapid development of the Internet of Things, etc. Wide frequency range, small footprint, high gain effects

Active Publication Date: 2021-12-03
TIANJIN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of the label is greatly affected by the size of the label, which makes the performance of the label in some specific forms or sizes cannot meet the requirements, which affects the promotion of RFID technology
The obstacles faced by RFID technology seriously restrict the rapid development of the Internet of Things

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
  • Compact uhf RFID foldable anti metal tag antenna
  • Compact uhf RFID foldable anti metal tag antenna
  • Compact uhf RFID foldable anti metal tag antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The invention provides a compact UHF RFID folding anti-metal tag antenna. The compact UHF RFID foldable anti-metal tag antenna of the present invention adopts an i-shaped patch (04) with a rectangular groove (03) and a rectangular groove (09), combined with a square ground plane (01) and a non-resonant ring (05) , the stub (02) is inserted into the i-shaped patch (04) to reduce the input impedance of the antenna. The non-resonant ring (05) appears on the back of the i-shaped patch (04) by folding, and the capacitive and inductive effects introduced by the ring can effectively reduce the high resonance frequency of the antenna. Wherein, the rectangular groove (03), the rectangular groove (09) and the non-resonant ring (05) and the first gap (06), the center gap (07) and the second gap (08) are used to adjust the input impedance of the antenna to To achieve conjugate matching with the chip, thus realizing the maximum power exchange.

[0018] Such as figure 1 As shown, ...

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 compact UHF RFID folding anti-metal tag antenna, which comprises a flexible dielectric substrate and a folding antenna arranged on the flexible substrate. It is characterized in that the folded antenna includes a ground plane, an i-type patch, a non-resonant loop and a stub, the ground plane and the non-resonant loop are respectively located on both sides of the i-type patch, and the i-type patch connects to the ground plane through the stub Interconnection; the non-resonant ring is located on the back of the i-shaped patch by folding, and the ground plane is located at the bottom; a first gap is opened on the side of the i-shaped patch close to the stub line, and a second gap is opened on the other side, There is a middle gap in the middle, the first gap is connected with the middle gap, it is T-shaped, the width of the first gap is larger than the width of the second gap; there are two sets of groove gaps distributed on both sides of the first gap, each group of rectangular grooves The slot gap includes at least two rectangular grooves.

Description

technical field [0001] The invention belongs to the technical field of tag antennas, in particular to a compact UHF RFID folding anti-metal tag antenna. Background technique [0002] With the promotion of Internet of Things technology in various fields, the application scenarios of radio frequency identification technology (RFID) tags are becoming more and more diverse. Some applications require tags to be installed on items of different materials, such as glass, wood or even metal. Among these attachment materials, metal has the greatest impact on the performance of the antenna, and may even cause the antenna to fail to work normally. In order to reduce the impact of the attached metal, many tag design methods have been proposed. For example, the distance between the tag and the surface of the metal object is increased, the dipole arm is folded into multiple parts, and the tag antenna is isolated from the metal by inserting a layer of electromagnetic band gap (EBG) or artif...

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): H01Q1/38H01Q1/48H01Q1/50H01Q1/22
CPCH01Q1/2225H01Q1/38H01Q1/48H01Q1/50
Inventor 宁红飞马永涛
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap