Passive double-ring identifying card for circularly polarized linear antenna

A technology of antenna identification and double rings, which is applied to record carriers used in machines, instruments, computer components, etc., can solve the problems of limited storage identification data, sensitive clock frequency, and restricted application range, and achieve security and confidentiality Strong, stable performance, low material cost effect

Inactive Publication Date: 2004-07-14
赖声礼
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent application number: 01128898.1 discloses a radio frequency passive anti-tamper identification card. Compared with the existing passive electronic identification card, the communication distance is increased and the bandwidth is increased, but the manufacturing process is relatively complicated and the cost is high. In particular, it is necessary to add a vacuum metal coating process to the substrate coating, and the mass production process will cause environmental pollution
[0004] Chinese patent application number: 97202777.7 discloses an electronic label, which solves the technical problem that wireless data transmission is sensitive to clock frequency, but its manufacturing process is relatively complicated, the storage capacity of the label is only 128bit, the storage identification data is limited, and the scope of application is limited. greater constraints

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
  • Passive double-ring identifying card for circularly polarized linear antenna
  • Passive double-ring identifying card for circularly polarized linear antenna
  • Passive double-ring identifying card for circularly polarized linear antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Such as figure 1 , 2 As shown, the passive dual-circular circularly polarized linear antenna identification card adopts a dual-circular circularly polarized linear antenna, which is a double circular ring composed of a left circular 1 and a right circular 4 counterclockwise. Phase-shift matching microstrip line 2, passive microwave reflection modulator IC3, substrate 5, substrate edge notch 7 and engraved area 8; their relative position and connection relationship are: printing circular polarization on substrate 5 Double ring antenna 1, 4 and phase-shift matching microstrip line 2 pattern; one end of passive microwave reflection modulator IC3 is welded to one end of phase-shift matching microstrip line 2, and the other end is welded to right ring 4; phase-shift matching The other end of the microstrip line 2 is connected to the left ring 1; in order to prevent dismantling, the present invention takes the symmetry axis of the left and right rings as the central axis, an...

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 present invention relates to electronic recognizer, and is especially passive double-ring circularly polarized linear antenna identifying card. It consists of double ring, phase shift matching microstrip line, passive microwave reflecting modulator, substrate with cuts and grain carving reginos. The identifying card has simple structure, easy manufacture, convenient use, great memory capacity, frequency band width up to 13% and identifying distance up to 10 m, and can be used widely in railway and highway vehicle management, aviation cargo transport, intelligent traffic system, logistics management, and other fields.

Description

technical field [0001] The invention relates to an electronic identification device, in particular to a passive double-ring circularly polarized linear antenna identification card related to passive reflection modulation technology, microwave theory and technology, microstrip antenna and transmission line matching technology. Background technique [0002] The active identification card in the prior art requires an external lithium battery to supply energy. When the battery is dead or fails, it needs to be sent back to the manufacturer for charging and replacement. Maintenance is inconvenient and costly, and waste lithium batteries pollute the environment. In addition, the active card has a complex structure and a large volume. In practical applications, the rate of missed recognition and false recognition is high. [0003] Chinese patent application number: 01128898.1 discloses a radio frequency passive anti-tamper identification card. Compared with the existing passive ele...

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): G06K19/07
Inventor 赖声礼
Owner 赖声礼
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