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A uhf_rfid tag and antenna with a multimedia structure

A multi-media and antenna technology, applied in the field of RFID (Radio Frequency Identification) tags, to achieve the effect of good Q value performance, reduced loss, and low loss tangent value

Active Publication Date: 2016-06-08
XERAFY (NANTONG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a UHF_RFID tag with a multi-media structure to solve the technical problem that the performance of the antenna substrate in the prior art is directly proportional to the cost of the antenna substrate material, and does not have a good performance-price ratio

Method used

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  • A uhf_rfid tag and antenna with a multimedia structure
  • A uhf_rfid tag and antenna with a multimedia structure
  • A uhf_rfid tag and antenna with a multimedia structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see figure 1 , which is a schematic cross-sectional diagram of a UHF_RFID tag with a multi-media structure. It includes antenna and IC chip 4 . The antenna further includes a dielectric substrate 5, one side of the dielectric substrate 5 is provided with a ground layer 1, and the corresponding surface is provided with a radiation electrode layer 2, and the radiation electrode layer 2 is connected to the IC chip 4 through a microstrip line or a probe 3, (mainly Refers to that the radiation electrode layer 2 is connected to the RF port of the IC chip 4 through a microstrip line or probe 3), the ground layer 1 is directly connected to the GND port of the IC chip 4 through a section of metal layer, and the dielectric substrate 5 includes There are at least two dielectric layers, the dielectric constants of the two adjacent dielectric layers are different, and the dielectric of the dielectric layer is a non-metallic material.

[0026] exist figure 1 Among them, the dielec...

Embodiment 2

[0034] see figure 2 , which is a schematic cross-sectional schematic diagram of the second type of UHF_RFID tag with a multi-media structure.

[0035] The dielectric substrate can be composed of two layers or multiple dielectric layers. For example, the epoxy board layer is connected to the air layer to form a group, and the dielectric substrate can include multiple groups 52, 53, 54, 55, 56.

Embodiment 3

[0037] The invention provides an antenna, comprising a dielectric substrate, a ground layer is arranged on one side of the dielectric substrate, and a radiation electrode layer is arranged on the corresponding surface, and the radiation electrode layer is connected to an external IC chip through a microstrip line or a probe. The dielectric substrate includes at least two dielectric layers, the dielectric constants of the two adjacent dielectric layers are different, and the dielectric of the dielectric layer is non-metallic material.

[0038] The dielectric layer includes an air layer, the air layer includes a bracket, and the air layer is connected to the ground layer or other dielectric layers through the bracket.

[0039] The dielectric substrate includes multiple dielectric layers.

[0040] The medium layer can be epoxy board layer, plastic layer and air layer appearing alternately.

[0041] A manufacturing process of a UHF_RFID anti-metal tag with a multi-media structure...

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Abstract

A UHF_RFID anti-metal tag with a multi-media structure, including an antenna and an IC chip, the antenna further includes a dielectric substrate, a ground layer is arranged on one side of the dielectric substrate, and a radiation electrode layer is arranged on the corresponding surface, and the radiation electrode layer passes through The microstrip line or the probe is connected with the IC chip, the dielectric substrate includes at least two dielectric layers, the dielectric constants of the two adjacent dielectric layers are different, and the dielectric of the dielectric layer is a non-metallic material. The dielectric layer includes an air layer, the air layer includes a bracket, and the air layer is connected to the ground layer or other dielectric layers through the bracket. The medium layer can also be an epoxy board layer or a plastic layer. The invention adopts dielectric layers with different dielectric constants as the dielectric substrate, which reduces the loss and improves the performance of the antenna. The present invention can also use an air layer as one of the dielectric layers, and air has no dielectric loss, thereby further improving the performance of the antenna.

Description

technical field [0001] The present invention relates to an RFID (Radio Frequency Identification) tag, in particular to a UHF (Ultra High Frequency, UHF-UltraHigh Frequency) RFID tag. Background technique [0002] A radio frequency identification system usually consists of three parts: a reader (Reader), a radio frequency tag (RFID Tag) and an operating system. The radio frequency tag attached to the object to be identified contains electronic data in an agreed format as the identification information of the item to be identified. The reader can read the electronic data stored in the tag or write information into the tag without contact, so as to realize the automatic identification and management of various objects. The reader and the radio frequency tag communicate with each other using advanced radio frequency technology according to the agreed communication protocol. The basic communication process is as follows: (1) The tag within the range of the reader receives the ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K19/077H01Q1/22
Inventor 刘智佳
Owner XERAFY (NANTONG) CO LTD
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