Small-size anti-metal tag with multiple installation modes

Abstract

The invention discloses a small-size anti-metal tag with multiple installation modes, which comprises an antenna radiation surface, a substrate, an anti-metal surface and bottom installation glue, and is characterized in that two grooves are formed in the middle of the antenna radiation surface to form two L-like antenna radiation surfaces which are matched with each other; the proper groove size is obtained by adjusting the gap size of the radiation surfaces of the two L-like antennas, so that the tag and different RFID chips achieve proper impedance matching, and the design of the groove can also increase the electrical size of the radiation surfaces of the antennas, so that the tag works in the UHF frequency band; the left side and the right side of the substrate are respectively provided with a mounting through hole, and the label can be fixed on different metal surfaces by utilizing different sizes of the mounting through holes. The RFID tag is small in size, low in overall cost and capable of adapting to impedance of RFID chips with different functions, has multiple installation modes such as nut fixing and UV glue fixing, can be applied to the UHF frequency band in different installation modes, and can be fixed to different metal surfaces through different through hole sizes.

Description

Technical Field

[0001] The invention belongs to the technical field of RFID wireless communication, and in particular relates to a small-size anti-metal tag with multiple installation modes. Background Art

[0002] As an indispensable part of the RFID wireless communication system, RFID tags are mainly responsible for storing and collecting external information and transmitting information wirelessly.

[0003] As UHF technology is applied in more and more fields, the requirements in different scenarios are also different. The complexity of the application scenarios also requires complex installation of tags. Facing the complex and changeable metal environment, it is meaningful to design a small-sized anti-metal tag with multiple installation methods. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and propose a small-size anti-metal tag with low overall cost, adaptable to the impedance of RFID chips with different functions, with multiple installation methods such as nut fixing and UV glue fixing, and can be applied to the UHF frequency band in different installation forms.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A small-size anti-metal tag with multiple installation methods includes an antenna radiation surface, a substrate, an anti-metal surface and bottom mounting glue. Two grooves are opened in the middle of the antenna radiation surface to form two L-shaped antenna radiation surfaces that match each other. The appropriate groove size is obtained by adjusting the gap size of the two L-shaped antenna radiation surfaces so that the tag can achieve appropriate impedance matching with different RFID chips. At the same time, the design of the groove can also increase the electrical size of the antenna radiation surface, so that the tag can work in the UHF frequency band; a mounting through hole is opened on each of the left and right sides of the substrate, and different mounting through hole sizes are used to enable the tag to be fixed on different metal surfaces.

[0007] Preferably, the L-shaped antenna radiation surface and the anti-metal surface at the bottom are connected to each other through two metal vias, thereby achieving the anti-metal effect of the tag.

[0008] Preferably, the mounting through holes are circular through holes, and the diameters of the two mounting through holes are less than or equal to 5 mm, so that the tag can be fixed on the metal surface by means of bolts and nuts.

[0009] Preferably, the bottom mounting glue is UV glue, which is located at the bottom of the anti-metal surface. When encountering a position where nuts and bolts cannot be used, UV glue can be used to quickly and firmly fix it.

[0010] Preferably, the PCB board used as the substrate is an FR4 substrate with a size of 45*10*1mm.

[0011] Preferably, the tag can be applied to the UHF frequency band of 902MHz-928MHz in different installation forms.

[0012] Preferably, the overall size of the label is 45mm*10mm*1mm.

[0013] Preferably, the label can be installed in a bent manner and used on a curved metal surface.

[0014] The present invention adopts a design of an L-shaped radiation surface to effectively utilize a small-size design surface, increase the electrical size of the tag antenna, and has a low overall cost. It can adapt to the impedance of RFID chips with different functions, has multiple installation methods such as nut fixing and UV glue fixing, and can be applied to the UHF frequency band in different installation forms. Different through-hole sizes can be used to enable the tag to be fixed on different metal surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 is a schematic diagram of the radiation surface of the top antenna of the present invention;

[0017] Figure 3 This is a schematic diagram of the bottom anti-metal surface of the present invention

[0018] Figure 4 is the antenna impedance diagram of the present invention;

[0019] Figure 5 It is the beam radiation 3D diagram of the present invention;

[0020] In the figure, 1, substrate, 2, L-shaped radiation surface, 3, metal via, 4, anti-metal surface, 5, RFID chip, 6, mounting through hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical effect and technical solution of the embodiment of the present invention clearer, the technical solution in the embodiment of the present invention is clearly and completely described below in conjunction with the drawings in the embodiment of the present invention; it is obvious that the described embodiment is a part of the embodiment of the present invention. Based on the embodiment disclosed in the present invention, other embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1-5As shown, a small-sized anti-metal tag with multiple installation methods includes an antenna radiation surface, a substrate 1, an anti-metal surface 3 and a bottom mounting adhesive. Two grooves are opened in the middle of the antenna radiation surface to form two L-shaped antenna radiation surfaces 2 that cooperate with each other. By adjusting the gap size of the two L-shaped antenna radiation surfaces 2 to obtain a suitable groove size, the tag can achieve a suitable impedance matching with different RFID chips. At the same time, the design of the groove can also increase the electrical size of the antenna radiation surface, so that the tag can work in the UHF frequency band. A mounting through hole 6 is provided on each of the left and right sides of the substrate 1, and the tag can be fixed on different metal surfaces by using different sizes of the mounting through holes 6; the L-shaped antenna radiation surface 1 and the anti-metal surface 4 at the bottom are connected to each other through two metal vias 3, thereby realizing the anti-metal function of the tag; the mounting through holes 6 are circular through holes, and the diameters of the two mounting through holes are less than or equal to 5mm, so that the tag can be fixed on the metal surface by bolts and nuts; the PCB board material used as the substrate 1 is an FR4 substrate with a size of 45*10*1mm; the tag can be applied to the UHF frequency band of 902MHz-928MHz in different installation forms; the overall size of the tag is 45mm*10mm*1mm.

[0024] Example 2

[0025] The bottom mounting glue adopts UV glue, which is located at the bottom of the anti-metal surface 4. When encountering a position where nuts and bolts cannot be used, UV glue can be used to fix it quickly and firmly.

[0026] Example 3

[0027] Since the label is very thin, it can be bent and installed to a certain extent and used on curved metal surfaces.

[0028] As a part of the present invention, the illustrative embodiments of the present invention and their description are used to explain the present invention, but do not constitute improper limitations of the present invention.

Claims

1. A small-size anti-metal label with multiple installation methods, characterized by: The tag includes an antenna radiation surface, a substrate, an anti-metal surface and bottom mounting glue. Two grooves are opened in the middle of the antenna radiation surface to form two L-shaped antenna radiation surfaces that match each other. The appropriate groove size is obtained by adjusting the gap size of the two L-shaped antenna radiation surfaces so that the tag can achieve appropriate impedance matching with different RFID chips. At the same time, the design of the groove can also increase the electrical size of the antenna radiation surface, so that the tag can work in the UHF frequency band; a mounting through hole is opened on each of the left and right sides of the substrate, and different mounting through hole sizes are used to enable the tag to be fixed on different metal surfaces.

2. A small-size anti-metal tag with multiple installation methods as claimed in claim 1, characterized in that: The L-shaped antenna radiation surface and the anti-metal surface at the bottom are connected to each other through two metal vias, thereby achieving the anti-metal effect of the tag.

3. A small-size anti-metal label with multiple installation methods as claimed in claim 1, characterized in that: The mounting through holes are circular through holes, and the diameters of the two mounting through holes are less than or equal to 5 mm, so that the tag can be fixed on the metal surface by bolts and nuts.

4. A small-size anti-metal tag with multiple installation methods as claimed in claim 1, characterized in that: The bottom mounting glue adopts UV glue, which is located at the bottom of the anti-metal surface. When encountering a position where nuts and bolts cannot be used, UV glue can be used to quickly and firmly fix it.

5. A small-size anti-metal label with multiple installation methods as claimed in claim 1, characterized in that: The PCB board used as the substrate adopts a FR4 substrate with a size of 45*10*1mm.

6. A small-size anti-metal tag with multiple installation methods as claimed in claim 1, characterized in that: The tag can be used in the UHF frequency band of 902MHz-928MHz in different installation forms.

7. A small-size anti-metal tag with multiple installation methods as claimed in claim 1, characterized in that: The overall size of the label is 45mm*10mm*1mm.

8. A small-size anti-metal tag with multiple installation methods as claimed in claim 1, characterized in that: The label can be bent and installed for use on curved metal surfaces.

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