RFID (radio-frequency identification) reader-writer shell integrated antenna

A technology for readers and antennas, which is applied in the direction of antenna support/installation device, instrument, radiation element structure, etc., to achieve simple structure and remarkable effect

Inactive Publication Date: 2014-09-10
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of short reading distance, low gain and long reading time caused by the reduction of the antenna size of the reader

Method used

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  • RFID (radio-frequency identification) reader-writer shell integrated antenna
  • RFID (radio-frequency identification) reader-writer shell integrated antenna
  • RFID (radio-frequency identification) reader-writer shell integrated antenna

Examples

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Embodiment Construction

[0023] In the embodiment of the present invention, taking a reader-writer with a size of 90mm×56mm×15mm as an example, the antenna radiator is made on the casing of the reader-writer, and the antenna is designed on the upper surface of the casing with a size of 90mm×56mm, which can maximize the utilization of The size of the reader does not need to be reduced, and the gain reduction caused by the reduction of the antenna size can be avoided; there is no object covering the antenna radiator, and it can directly contact the tag, and its performance is close to that of an external antenna. It will not increase the volume of the reader; the radiator part of the designed antenna adopts a double helix structure, and the magnetic induction sensitivity is improved by increasing the number of turns of the microstrip line, which can increase the charging speed of the tag capacitor, thereby reducing the reading and writing time.

[0024] The specific embodiment of the present invention is...

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PUM

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Abstract

An RFID (radio-frequency identification) reader-writer shell integrated antenna comprises an RFID reader-writer shell (5), an antenna grounding plate (2), radiation branches (6), impedance matching branches (3), a feed port (1), a medium substrate (4) and an HRS (high resolution spectrometer) single-end radio-frequency connecting wire. The antenna grounding plate is arranged in the middle of the medium substrate of the antenna and is connected with the radiation branches and the impedance matching branches through the feed port, the medium substrate of the antenna is mounted in the RFID reader-writer shell, and the radiation branches and the impedance matching branches are mounted on the upper surface of the RFID reader-writer shell. The antenna is directly processed on the reader-writer shell, so that the defect that an existing reader-writer antenna inlaid causes poor gain performance and too short reading-writing distance is overcome. The RFID reader-writer shell integrated antenna is simple and compact in structure and applicable to antenna structures of RFID reader-writers.

Description

technical field [0001] The invention relates to an integrated antenna for an RFID reader-writer shell, which belongs to the technical field of microstrip antennas. Background technique [0002] Radio Frequency Identification (RFID), referred to as radio frequency identification, is an automatic identification technology. RFID can identify specific targets and obtain relevant data information through wireless signals, that is, there is no need to establish mechanical or optical contact between the identification system and specific targets, and only use radio frequency signals to achieve contactless information transmission through spatial coupling to achieve identification purposes. The commercial application of RFID technology began in the late 1960s until 1999 when the Massachusetts Institute of Technology and Cambridge University established the AutoID Center, and proposed the Electronic Product Code (EPC, Electronic Product Code) and the Internet of Things (Internet of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/22H01Q1/38G06K17/00
Inventor 张晓燕王国皓喻易强
Owner EAST CHINA JIAOTONG UNIVERSITY
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