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

Near field reader antenna and antenna array used for unmanned checkout platform

A reader and antenna technology, applied in the field of RFID systems, can solve the problem of short reading distance in the near field, and achieve the effect of low gain in the far field, easy processing, and reducing interference

Pending Publication Date: 2018-03-13
SUZHOU YOUHAN INFORMATION TECH CO LTD
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the near-field reading distance of magnetic field coupling is too short in the prior art, a near-field reader antenna and antenna array for unmanned cash register platform is proposed to improve the recognition distance and accuracy of the near-field, Eliminate distractions and reduce costs

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
  • Near field reader antenna and antenna array used for unmanned checkout platform
  • Near field reader antenna and antenna array used for unmanned checkout platform
  • Near field reader antenna and antenna array used for unmanned checkout platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like figure 1 As shown, the near-field reader antenna proposed by the present invention for an unmanned cashier platform includes an SMA connector 1, a feed port 2, an antenna matching branch 3, a power distribution branch 4, an antenna microstrip radiation branch, and a phase-shifting branch; The antenna feed port adopts an SMA connector 1 to be directly connected to one end of the feed port 2, and the other end is connected to the antenna matching branch 3; the antenna matching branch 3 is connected to the power divider 4 of the antenna, and the antenna power divider 4 is connected to the antenna microstrip radiation The branches are connected. Feed port 2 is a 50 ohm microstrip line. like figure 2As shown, the antenna has three layers in total, the top layer 11 is provided with the structure as claimed in claim 1, the middle layer is a dielectric layer 12, and the bottom layer is a ground layer 13. The material of the microstrip structure such as the antenna feed...

Embodiment 2

[0044] UHF near field RFID reader antenna for unmanned cashier platform. figure 1 It is a schematic diagram of the top-level plan structure of the UHF near-field RFID reader antenna. Such as figure 1 As shown, the antenna consists of SMA connector 1, feed port 2, antenna matching branch 3, power distribution branch 4, left phase shifting branch 5, right phase shifting branch 6, and antenna microstrip radiation branch. figure 2 It is a side schematic diagram of the UHF near-field RFID reader antenna, such as figure 2 As shown, the antenna has three layers, the top layer 11, the dielectric layer 12, and the ground layer 13. An SMA connector 1 is used to directly connect the antenna feeder to the 50-ohm microstrip line 2, so that the feeder and the antenna are well matched. Strong and easy to solder. One end of the 50 ohm microstrip line 2 is welded with an SMA head, and the other end is connected to the matching stub 3 . The antenna matching stub 3 is connected to the powe...

Embodiment 3

[0050] The antenna radiation structure is composed of two phase shifting structures and four microstrip line serpentine structures. In the four-section microstrip serpentine structure, two microstrip serpentine structures adopt bilateral symmetry, and the other two microstrip serpentine structures adopt approximately mirror images on both sides, and the path length of the four microstrip lines is are the same, and the ends of the four serpentine microstrip structures are all in an open state.

[0051] The four sections of antenna microstrip radiation branches are respectively upper left microstrip line 7, left lower microstrip line 8, right upper microstrip line 9, right lower microstrip line 10, left upper microstrip line 7 and left lower microstrip line 8, which are arranged symmetrically up and down, The upper right microstrip line 9 and the lower right microstrip line 10 are symmetrically arranged up and down;

[0052] The upper left microstrip line 7 and the lower left m...

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 discloses a near field reader antenna and an antenna array used for an unmanned checkout platform. An antenna radiation structure comprises an antenna microstrip radiation branch and a phase shifting branch; the antenna microstrip radiation branch comprises an antenna microstrip line arranged in the perpendicular direction and an antenna microstrip line arranged in the horizontal direction to form a snake-shaped structure; the horizontal and perpendicular lengths of the microstrip line are adjusted to enable the current directions in the partial perpendicular direction to be thesame, and to enable the current directions in the partial horizontal direction to be the same; the phase shifting branch is inserted to the partial place with the same current direction of the antennamicrostrip line, so that the space heights of the currents of the same direction are the same, more polarized directions of the electric field in the near field region can be realized, and wrong reading of the near field labels can be avoided; and by virtue of the near field reader antenna and the antenna array, wrong reading of the near field labels can be avoided, interference of other system to an unmanned RFID system is lowered, the coil type label antenna can be read, and a dipole-like label antenna also can be read, so that the antenna is higher in flexibility.

Description

technical field [0001] The present invention relates to the technical field of an RFID (Radio Frequency Identification, radio frequency identification) system, in particular to an RFID near-field reader antenna and an antenna array for an unmanned cash register platform. Background technique [0002] Radio Frequency Identification (RFID) technology is a technology that uses radio frequency signals to realize automatic identification and wireless data transmission through backscattering or electromagnetic field coupling. The reader antenna is an indispensable part of the RFID system, and the performance of the antenna directly affects the performance of the entire system. RFID technology is an indispensable and important part of the Internet of Things, widely used in libraries, access control systems, food safety traceability and other fields. Furthermore, the integration of RFID systems and mobile terminals such as mobile phones can realize mobile Internet applications such...

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
IPC IPC(8): H01Q1/22H01Q1/38H01Q1/50H01Q21/00
CPCH01Q1/2225H01Q1/38H01Q1/50H01Q21/00
Inventor 何赛灵李俊龙刘辉
Owner SUZHOU YOUHAN INFORMATION TECH CO LTD
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