Non-contact passive radio frequency label and reading system thereof

A passive radio frequency, non-contact technology, applied to record carriers, instruments, and inductive record carriers used in machines, etc., can solve the problems of rapid and accurate identification by readers, poor stability of the carrier frequency of radio frequency signals, and long identification time. To achieve the effect of easy integration

Inactive Publication Date: 2007-10-31
INST OF ACOUSTICS CHINESE ACAD OF SCI
View PDF0 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the recognition time is long and the scope of application is limited.
When working in a higher frequency band (such as 430-460MHz, 865-928MHz, 2.35-2.45GHz, 5.4-6.8GHz frequency band), since there is no radio f...

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
  • Non-contact passive radio frequency label and reading system thereof
  • Non-contact passive radio frequency label and reading system thereof
  • Non-contact passive radio frequency label and reading system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] Fig. 1 shows a schematic block diagram of two parts of the present invention, a radio frequency tag (RFID) and a corresponding radio frequency tag (RFID) reader system.

[0027] The radio frequency tag (RFID) is composed of a bulk acoustic wave multimode resonator 300 , an antenna matching circuit 302 and a radio frequency antenna 301 . The bulk acoustic wave multimode resonator 103 mainly includes a bulk acoustic wave resonator cavity and a piezoelectric film transducer. The thickness of the bulk acoustic wave resonator determines the interval between two adjacent resonance frequencies of the bulk acoustic wave multimode resonator 103 or the time interval between two adjacent reflection pulses in the time domain; The thickness of the piezoelectric film in the transducer determines the working center frequency of the bulk acoustic wave multimode resonator 103 . In the present invention, the working center frequency of the bulk acoustic wave multimode resonator 103 may ...

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

This invention relates to one non-contact radio frequency label without source and its read system, wherein the radio frequency label comprises radio frequency wave signal source, antenna match circuit and radio antenna; the radio signal source adopts space multi-mode resonance structure composed of space wave resonance chamber, sound couple layer, bottom electrode, pressure electric film, insulation layer and top electrode; the said read system comprises reader and reader antenna; the reader is in charge for radio label inquire signal emission and radar receive and transmission.

Description

technical field [0001] The invention belongs to the technical field of radio frequency identification, in particular, the invention relates to a non-contact passive radio frequency tag and a reading system thereof. Background technique [0002] Radio Frequency Identification (RFID, Radio Frequency Identification) is a non-contact automatic identification technology. Its basic principle is to use the transmission characteristics of radio frequency signals and space coupling (electromagnetic coupling or electromagnetic propagation) to realize automatic identification of identified objects. [0003] Electromagnetic propagation or electromagnetic backscatter coupling is the so-called radar principle model. The emitted electromagnetic waves are reflected after hitting the target, and at the same time carry back the target information, based on the spatial propagation law of electromagnetic waves. The electromagnetic backscatter coupling method is generally suitable for long-dista...

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): G06K19/077G06K7/00
Inventor 乔东海汤亮宫铭举田静
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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