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Omnidirectional anti-metal ultrahigh frequency rfid tag and medical instrument

An ultra-high frequency, anti-metal technology, which is applied to record carriers used in instruments and machines, computer parts, etc., can solve the problem that ultra-high frequency anti-metal tags cannot take into account the volume, bandwidth and coverage, etc., to enhance different scenarios. or environmental capabilities, increasing the scope of application, and broadening the effect of working bandwidth

Pending Publication Date: 2022-03-01
苏州微明医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problem that the UHF anti-metal tags in the prior art cannot take into account the volume, bandwidth and coverage, the purpose of the present invention is to provide an omnidirectional anti-metal UHF RFID tag and medical equipment

Method used

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  • Omnidirectional anti-metal ultrahigh frequency rfid tag and medical instrument
  • Omnidirectional anti-metal ultrahigh frequency rfid tag and medical instrument
  • Omnidirectional anti-metal ultrahigh frequency rfid tag and medical instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An omnidirectional anti-metal UHF RFID tag, such as Figure 1-3 As shown, it includes a dielectric substrate 1 , a helical antenna 2 , an rfid radio frequency chip 3 and a capacitor or inductor 4 .

[0035] Wherein, the dielectric substrate 1 is made of PCB, composite materials or ceramics and other non-metallic materials with dielectric properties, and the dielectric substrate 1 is provided with a through hole 5, wherein the cross section of the through hole 5 is circular, Rectangular or elliptical shapes are acceptable, but in this embodiment, it is preferable that the dielectric base 1 is in a ring-shaped structure as a whole. The through hole 5 is mainly used for passing through the tubular or rod-shaped member, so as to facilitate the installation and use of the rfid tag.

[0036] The material of the helical antenna 2 is gold, silver, copper, iron or aluminum, the helical antenna 2 is installed on the dielectric substrate 1, and the helical antenna 2 is arranged a...

Embodiment 2

[0040]The difference from Embodiment 1 is that it can be understood that the helical antenna 2 usually has a certain width, and it does not necessarily have a linear structure. Therefore, in this embodiment, the helical antenna 2 is provided with a plurality of notches 23 staggered along the length direction. Specifically, the antenna A21 and the antenna B22 are provided with a plurality of notches 23 staggered along the length direction. It can be understood that the shape of the notch 23 can be selected in many ways. When the notch 23 is rectangular, the antenna A21 and the antenna B22 present a serpentine structure, such as Figure 4 shown. Such arrangement not only reduces the materials used for the helical antenna 2 , but also achieves the purpose of extending the electrical length of the helical antenna 2 .

Embodiment 3

[0042] The difference between it and Embodiment 1 is that in order to achieve a similar effect to that of Embodiment 2, in this embodiment, the helical antenna 2 is provided with a plurality of through holes 24 spaced along the length direction, specifically, in The antenna A21 and the antenna B22 are respectively provided with a plurality of through holes 24 staggered along the length direction, wherein the through holes 24 can be as follows: Figure 5 The square hole shown, can also be as Figure 6 circular hole shown. Such setting can also achieve the purpose of reducing the materials used for the helical antenna 2 and prolonging the electrical length of the helical antenna 2 .

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Abstract

The invention discloses an omnidirectional anti-metal ultrahigh frequency rfid tag and a medical instrument, and belongs to the field of electronic tags. The tag comprises a dielectric substrate with a through hole, a helical antenna arranged on the dielectric substrate and distributed around the through hole, an rfid radio frequency chip arranged on the dielectric substrate, and a capacitor or an inductor. The helical antenna is provided with a fracture used for forming two connecting end points on the helical antenna; wherein the rfid radio frequency chip and the capacitor or the inductor are both electrically connected between the two connection end points. The medical instrument comprises a rod-shaped or tubular component and the omnidirectional anti-metal ultrahigh frequency rfid tag installed on the rod-shaped or tubular component through a through hole. The label is reasonable in design, has the advantages of being small in size and large in coverage range, and can be conveniently installed on a medical instrument with a rod-shaped or tubular component for use.

Description

technical field [0001] The invention relates to the field of electronic tags, in particular to an omnidirectional anti-metal ultra-high frequency RFID tag and a medical device. Background technique [0002] Narrowband RFID tags will reduce the original RF performance of the tag in practical applications --- the reading range will drop, especially for the application of RFID tags and systems working in the Chinese frequency band (920-925MHZ). Most of the existing UHF anti-metal tags are implemented by loading RFID chips with microstrip antennas. However, although the tags with microstrip antennas circulating in the market solve the problem of narrow bandwidth, they are usually thicker. [0003] In addition, a single microstrip antenna signal can cover up to 180 degrees, while the working frequency band is relatively narrow, and the omnidirectional coverage needs to form a whole column, which increases the manufacturing difficulty and cost, and non-omnidirectional RFID tags wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077
CPCG06K19/0775G06K19/07786
Inventor 不公告发明人
Owner 苏州微明医疗科技有限公司