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Multi-infeed ultrahigh frequency RFID tag antenna

An RFID tag and ultra-high frequency technology, applied in the field of multi-feed UHF RFID tag antennas, can solve the problems that single-feed RFID antennas cannot work normally, single-feed RFID antennas cannot satisfy users, etc.

Active Publication Date: 2017-12-05
FU TAI HUA IND SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing UHF RFID antennas usually only include one feed point. When the tag chip fails, the single-feed RFID antenna cannot work normally; or when the tag antenna needs to support multiple standard frequency bands, the single-feed RFID antenna Unable to meet user needs

Method used

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  • Multi-infeed ultrahigh frequency RFID tag antenna
  • Multi-infeed ultrahigh frequency RFID tag antenna
  • Multi-infeed ultrahigh frequency RFID tag antenna

Examples

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Embodiment Construction

[0014] Please refer to figure 1 , which shows the multi-feed UHF RFID tag antenna 1 in the first embodiment of the present invention. Please also refer to figure 2 , the tag antenna 1 includes an antenna structure 10 , a substrate 20 and a ground plane 30 . In this embodiment, the antenna structure 10 is located above the substrate 20 , the substrate 20 is located above the ground plane 30 , and the antenna structure 10 is also communicated with the ground plane 30 .

[0015] Such as figure 1 and figure 2 As shown, the antenna structure 10 includes a radiation unit 101, a first microstrip line 102, a second microstrip line 103, a third microstrip line 104, a fourth microstrip line 105, a first label chip 106 and a second label chip 107. Wherein, the first label chip 106 is connected between the first microstrip line 102 and the second microstrip line 103, and the second label chip 107 is connected to the third microstrip line 104 and the fourth microstrip line 105, thu...

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PUM

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Abstract

The invention provides a multi-infeed ultrahigh frequency RFID tag antenna, which comprises an antenna structure, a substrate and a ground plane, wherein the substrate is located at the upper part of the ground plane; the antenna structure communicates with the ground plane and comprises a radiating element, a plurality of microstrip lines and a plurality of tag chips; and one tag chip is connected between every two microstrip lines to form a microstrip feeder circuit. The multi-infeed ultrahigh frequency RFID tag antenna comprises the plurality of tag chips; when the tag chips are the same and one tag chip has a fault, the RFID tag antenna can still normally work, and normal identification of a tag of using the tag antenna can be ensured; and when the tag antenna has different working frequency bands, the tag of using the tag antenna can be identified in different countries or regions.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a multi-feed UHF RFID tag antenna. Background technique [0002] RFID (Radio Frequency Identification, Radio Frequency Identification) is a technology that conducts non-contact two-way data communication through radio frequency to identify targets. RFID systems usually consist of readers and electronic tags. The electronic tag includes an antenna and a tag chip, which transmits or receives electromagnetic waves through the antenna to exchange data with the reader, thereby realizing the identification of the electronic tag. Existing UHF RFID antennas usually only include one feed point. When the tag chip fails, the single-feed RFID antenna cannot work normally; or when the tag antenna needs to support multiple standard frequency bands, the single-feed RFID antenna Can not meet the needs of users. Contents of the invention [0003] In view of this, it is necessary to provide a multi-fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/22H01Q1/36H01Q1/38H01Q1/52G06K19/077
CPCG06K19/07786H01Q1/2225H01Q1/36H01Q1/38H01Q1/52G06K19/07754G06K19/0724G06K19/07773
Inventor 曹渝鋐谢阜谚
Owner FU TAI HUA IND SHENZHEN
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