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Near-field radio frequency identification (RFID) reader plane opening dual-ring antenna for ultra high frequency (UHF) band

A dual-loop antenna and reader technology, which is applied to the antenna grounding device, the structural connection of the antenna grounding switch, the structural form of the radiating element, etc., can solve the problems of inconvenient integration into the mobile terminal and the large size of the antenna structure, and achieve a simple manufacturing process. , The effect of small radiation loss and large selection range

Inactive Publication Date: 2012-12-12
SOUTH CHINA UNIV OF TECH
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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 overcome the shortcomings of the existing UHF frequency band RFID reader-writer antenna structure size is too large, not easy to integrate into the mobile terminal, to provide a planar opening double-loop antenna for near-field RFID reader-writer in the UHF frequency band, the specific technical scheme is as follows

Method used

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  • Near-field radio frequency identification (RFID) reader plane opening dual-ring antenna for ultra high frequency (UHF) band
  • Near-field radio frequency identification (RFID) reader plane opening dual-ring antenna for ultra high frequency (UHF) band
  • Near-field radio frequency identification (RFID) reader plane opening dual-ring antenna for ultra high frequency (UHF) band

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention is not limited to the scope described in the examples.

[0022] Such as figure 1 , figure 2 , image 3 As shown, the planar opening double-loop antenna for the UHF near-field RFID reader is a planar structure, including an antenna radiation unit, a dielectric substrate and a matching patch; the antenna radiation unit is attached to one side of the dielectric substrate, which is the The radiation body of the antenna; the matching patch is attached to the other side of the dielectric substrate and is the ground terminal of the antenna.

[0023] The antenna radiating unit is composed of two first square metal rings 1 and second square metal rings 2 with openings. The geometric centers of the first square metal ring 1 and the second square metal ring 2 coincide, the first square metal ring 1 nests t...

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Abstract

The invention discloses a near-field radio frequency identification (RFID) reader plane opening dual-ring antenna for an ultra high frequency (UHF) band. The antenna is in a plane structure and comprises an antenna radiating unit, a dielectric substrate and a matching patch, wherein the antenna radiating unit is attached to one surface of the dielectric substrate and is a radiating body of the antenna, and the matching patch is attached to the other surface of the dielectric substrate and is a ground terminal of the antenna. The antenna is simple in structure and easy to produce. Frequency points and bandwidths of resonance frequency of the antenna can be changed within broad radio-wave spectrum through the adjustment of antenna structural parameters. The antenna can meet RFID system radio-wave spectrum which is regulated by different nations and is applied to near-field mobile terminal RFID application such as mobile payment and article anti-faking and tracing.

Description

technical field [0001] The invention relates to the technical field of near-field RFID (radio frequency identification) systems, in particular to a radio frequency identification reader antenna with a planar opening double-loop structure. 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. With the proposal and development of the Internet of Things, as an indispensable part of the Internet of Things, RFID technology has been widely used. Recently, China Mobile's 40 billion shares in Shanghai Pudong Development Bank and China UnionPay announced that the new generation of mobile payment services will enter a large-scale pilot stage, which shows that the business model of the integration of RFID technology and mobile terminals is maturing. The integration of RFID systems and mob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50
Inventor 赖晓铮谢泽明曹建文谢启球
Owner SOUTH CHINA UNIV OF TECH
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