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

Surface acoustic wave radio frequency electronic tag with large data capacity

A surface acoustic wave and electronic tag technology, which is applied to recording carriers used in machines, instruments, computer parts, etc., can solve problems such as waste of space resources, achieve structure and design optimization, and expand coding capacity.

Active Publication Date: 2010-09-29
GUANGDONG CANCHIP TECH CO LTD
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To a certain extent, it causes a waste of space resources

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
  • Surface acoustic wave radio frequency electronic tag with large data capacity
  • Surface acoustic wave radio frequency electronic tag with large data capacity
  • Surface acoustic wave radio frequency electronic tag with large data capacity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] According to literature 1, the reflection of sound waves of a specific frequency can be achieved by adjusting the width of the reflection grating. For 42°LiTaO 3 In the case of making aluminum metal electrodes, calculate the numerical value of the single-period reflectivity, specifically as figure 1 shown.

[0025] Depend on figure 1 It can be found that at different operating frequencies, the reflectivity varies greatly. In this figure, the relative film thickness is 0.16, and the metallization ratio is 0.5. Therefore, the reflection of sound waves of specific frequencies can be realized by changing the width of the reflection grating.

[0026] Such as image 3 , the present invention is a surface acoustic wave radio frequency electronic tag with large data capacity, which mainly includes: a piezoelectric substrate, two transmitting interdigital...

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 surface acoustic wave radio frequency electronic tag with large data capacity, which comprises a piezoelectric substrate, an interdigital transducer and a distribution-type reflection grating array, wherein the interdigital transducer and the distribution-type reflection grating array are arranged on the piezoelectric substrate, and is characterized in that a second interdigital transducer is arraned between propagation paths of a first interdigital transducer and a first distribution-type reflection grating array; a second distribution-type reflection grating arrayis arranged between pulse intervals of encoderless interval of a pulse signal of the first distribution-type reflection grating array, and the second distribution-type reflection grating array is used for forming a surface acoustic wave electronic tag for another frequency together with the second interdigital transducer. On the basis of single interdigital tranducer and single distribution-type reflection grating array structure, the electronic tag utilizes the acoustic wave propagation path and the encoderless interval of the pulse signal to add a second group of another frequency interdigital transducer and reflection grating array; and on the basis that the size of the radio frequency electronic tag is not increased, the coding capacity of the electronic tag is greatly enlarged.

Description

technical field [0001] The invention belongs to the technical field of surface acoustic waves, in particular to a surface acoustic wave radio frequency electronic tag with large data capacity. Background technique [0002] The technical development of surface acoustic wave (SAW) electronic tags began in the late 1980s. In view of its advantages of working in the radio frequency band, passive and strong anti-electromagnetic interference, the research of surface acoustic wave tags has become a hot spot. [0003] Such as figure 2 As shown, a typical SAW RFID tag system includes a reader (Reader) and a radio frequency tag. The reader transmits a radio frequency query pulse through the antenna, and receives the signal returned by the tag, and obtains the tag information within the reading range after processing. The SAW tag is a one-port device that includes a tag antenna, an interdigital transducer (IDT) and a series of coded reflective grids. The IDT is directly connected wit...

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 Applications(China)
IPC IPC(8): G06K19/077
Inventor 李红浪程利娜刘久玲何世堂
Owner GUANGDONG CANCHIP 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