Multi-application anti-theft RFID tag suitable for far and near fields

Abstract

The utility model discloses a multi-application anti-theft RFID tag suitable for far and near fields. Relates to the field of RFID tags. Comprising a paper base material, an antenna and a chip, the antenna is attached to the paper base material, and the chip is connected above the metal antenna through a conductive adhesive; the antenna comprises a loop area, the loop area is rectangular, and a binding area is arranged at one end, located at the short edge, of the loop area and used for being connected with a chip. Two ends of the opening are respectively connected with the radiation area; the loop region is located outside the pair of radiation regions; the loop area is provided with at least one loop inner ring in the length direction, and the loop inner ring protrudes out of the long edge of the loop area. When the antenna works, the loop region of the antenna is arranged outside the pair of radiation regions, so that the antenna is convenient to unfold or bend, has the characteristics of far and near field application and multiple types, is convenient to match with different impedance chips, can be well matched with the chips, has relatively strong performance, and is convenient to expand design and application. And a plurality of loop inner rings are arranged in the loop region, so that an anti-theft function can be realized when the anti-theft device is bent and used.

Description

Technical Field

[0001] The utility model relates to the field of RFID tags, in particular to an anti-theft RFID tag suitable for multiple applications in far and near fields. Background Art

[0002] Radio Frequency Identification (RFID) technology is a contactless automatic recognition technology that automatically identifies target objects and obtains relevant data through spatial coupling (alternating magnetic field or electromagnetic field) to achieve the purpose of target recognition and data exchange. The recognition work does not require human intervention.

[0003] The basic working principle of RFID technology is: after the tag enters the magnetic field, it receives the radio frequency signal emitted by the RFID reader, and uses the energy obtained from the induced current to send out the product information stored in the chip (PassiveTag, passive tag or passive tag), or actively sends a signal of a certain frequency (ActiveTag, active tag or active tag); after the reader reads and decodes the information, it sends it to the central information system for relevant data processing.

[0004] With the continuous development of RFID technology, RFID products are gradually applied to all walks of life. At the same time, the demand for the application of labels in specific occasions is getting higher and higher, and the demand for the size and appearance of labels is gradually becoming more and more specialized and special. Specialization means that some high-specification items need to use corresponding specification RFID tags for tracking and management; specialization means that some irregular-shaped items need to be attached with RFID tags to achieve item tracking and management. The existing UHF tag consists of a substrate, a front metal antenna, a conductive adhesive, and a chip. The front metal antenna is attached to the top of the substrate, and the conductive adhesive is located above the metal antenna to connect the metal antenna and the chip. Conventional RFID UHF tags obtain energy by receiving electromagnetic waves to activate themselves to radiate electromagnetic waves in a fixed direction to transmit radio frequency information.

[0005] Conventional RFID UHF tags use a single loop + radiation zone structure (i.e. Figure 4 As shown in the figure, the chip and antenna are matched and optimized by adjusting the size of the loop area. Conventional RFID tags cannot meet the different requirements of far and near fields, and cannot meet the anti-theft function and the current specific industry needs. Utility Model Content

[0006] In view of the above problems, the utility model provides an anti-theft RFID tag which has a simple structure, is convenient to process and has improved reliability and is suitable for multiple applications in far and near fields.

[0007] The technical solution of the utility model is: an anti-theft RFID tag suitable for multiple applications in far and near fields, comprising a paper substrate, an antenna and a chip, wherein the antenna is attached to the paper substrate, and the chip is connected above the metal antenna through a conductive adhesive;

[0008] The antenna comprises a loop area, the loop area is rectangular, one end of the loop area located at a short side is provided with a binding area, the binding area is used to connect the chip; the other end is provided with an opening, the two ends of the opening are respectively connected to the radiation area; the loop area is located outside a pair of radiation areas;

[0009] The loop area is provided with at least one inner loop along the length direction, and the inner loop protrudes from the long side of the loop area.

[0010] The inner ring of the loop is circular, rectangular or triangular.

[0011] The loop inner ring includes at least two.

[0012] The radiation area is bent.

[0013] It also includes a surface material, which is located above the antenna and is provided with openings corresponding to the inner loop of the loop.

[0014] The length of the antenna is 5-500 mm, the height is 5-500 mm, the antenna line width is 0.2-5 mm, and the antenna line distance is 0.2-5 mm.

[0015] The line width of the binding area is 0.2-1 mm, and the length is 0.2-100 mm.

[0016] In operation, the loop area of ​​the antenna is arranged outside a pair of radiation areas, which is convenient for unfolding or bending operations, has the characteristics of far-field and near-field applications and multi-type, is convenient for matching with different impedance chips, can be well matched with them, has strong performance, and is convenient for expanding design and application. Multiple loop inner rings are arranged in the loop area, which can realize the anti-theft function when bent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 is a schematic diagram of the antenna structure.

[0019] Figure 3 This is a schematic diagram of the structure of the antenna and the surface material.

[0020] Figure 4 It is a structural schematic diagram of the prior art;

[0021] In the figure, 1 is a paper substrate, 2 is an antenna, 21 is a loop area, 22 is a radiation area, 23 is an inner ring of the loop, 3 is a chip, 4 is a conductive adhesive, 5 is a binding area, 6 is a surface material, and 60 is an opening. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The utility model Figure 1-3 As shown, an anti-theft RFID tag suitable for multiple applications in near and far fields includes a paper substrate 1, an antenna 2 and a chip 3. The antenna 2 is attached to the paper substrate 1, and the chip is connected to the top of the metal antenna through a conductive adhesive 4;

[0026] The antenna 2 includes a loop area 21, which is rectangular. A binding area 5 is provided at one end of the short side of the loop area, and the binding area is used to connect the chip. An opening is provided at the other end, and both ends of the opening are respectively connected to the radiation area 22. The loop area is located outside a pair of radiation areas.

[0027] The loop region is provided with at least one inner loop 23 along the length direction, and the inner loop 23 protrudes from the long side of the loop region.

[0028] In operation, the loop area of ​​the antenna is arranged outside a pair of radiation areas, which is convenient for unfolding or bending operations, has the characteristics of near-field and far-field applications and versatility, is convenient for matching with chips of different impedances, can be well matched with them, has strong performance, and is convenient for expanding design and application. A plurality of inner loops are arranged in the loop area, which can realize the anti-theft function when bent. The inner loop is arranged, and when the cable tie label is applied, the chip end can be inserted into the inner loop of the loop.

[0029] The inner loop 23 of the loop is circular, rectangular or triangular. The inner loop line design of a regular (rectangular, circular, etc.) or irregular (special shape) shape is adopted to better meet the needs of the industry and realize the special shape of the label. In this way, the size of the label can be adjusted and the shape can be changed, thereby improving the application range of the label.

[0030] The loop inner ring 23 includes at least two loops, which can be arranged according to specific processing requirements.

[0031] The radiation area 22 is bent. The bending design of the radiation area can increase the tag gain and increase the bandwidth (increase the antenna bandwidth to 30-40MHz) to reduce the influence of the change of the medium material on its reading performance. The number of bends is ≥2, which can increase the effective length of the tag and further improve the sensitivity performance.

[0032] The antenna 2 has a length of 5 to 500 mm, a height of 5 to 500 mm, an antenna line width of 0.2 to 5 mm, and an antenna line spacing of 0.2 to 5 mm, which can be set according to specific processing requirements.

[0033] The line width of the binding area 5 is 0.2~1mm, and the length is 0.2~100mm. By placing the chip externally, the loop area antenna can complete the corresponding impedance adjustment, achieve conjugate matching with different chips, achieve the best antenna performance, and broaden the wide range of compatible chips for the tag.

[0034] It also includes a surface material 6, which is located above the antenna and is provided with an opening 60 corresponding to the inner ring of the loop.

[0035] When the tag is unfolded and used normally, it can fully exert its far-field sensitivity performance and be used as a far-field tag; when the tag is bent as a cable tie tag and applied to an object, due to the influence of the bending curvature, the overall effective length of the tag is reduced and the performance is weakened. At this time, it is used as a near-field tag to meet the different application requirements of far and near fields. At the same time, when it is bent and used as a cable tie tag, according to the size of the object, an opening will be provided at the top of the finished surface material, and the antenna will be fragile or paper antenna technology. In this way, when the cable tie tag is disassembled, the opening will be damaged, resulting in the opening breaking, causing the loop area to be disconnected and the tag to fail, thus achieving the anti-theft requirements.

[0036] The utility model can realize the functions of far and near fields according to requirements, has wide applicability, and at the same time has the anti-theft function, improves economic benefits, and has strong practicality.

[0037] Regarding the contents disclosed in this case, there are a few points that need to be explained:

[0038] (1) The drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design;

[0039] (2) In the absence of conflict, the embodiments and features of the embodiments disclosed in this case may be combined with each other to obtain new embodiments;

[0040] The above are only specific implementation methods disclosed in this case, but the protection scope of the present disclosure is not limited thereto. The protection scope disclosed in this case should be based on the protection scope of the claims.

Claims

1. An anti-theft RFID tag suitable for multiple applications in near and far fields, comprising a paper substrate, an antenna and a chip, wherein the antenna is attached to the paper substrate, and the chip is connected to the top of the metal antenna through a conductive adhesive; It is characterized in that The antenna comprises a loop area, the loop area is rectangular, one end of the loop area located at a short side is provided with a binding area, the binding area is used to connect the chip; the other end is provided with an opening, the two ends of the opening are respectively connected to the radiation area; the loop area is located outside a pair of radiation areas; The loop area is provided with at least one inner loop along the length direction, and the inner loop protrudes from the long side of the loop area.

2. The anti-theft RFID tag suitable for near- and far-field multi-applications according to claim 1, characterized in that: The inner ring of the loop is circular, rectangular or triangular.

3. The anti-theft RFID tag suitable for multiple applications in near and far fields according to claim 2, characterized in that: The loop inner ring includes at least two.

4. The anti-theft RFID tag suitable for near-field and far-field multi-applications according to claim 1, characterized in that: The radiation area is bent.

5. An anti-theft RFID tag suitable for multiple applications in near and far fields according to any one of claims 1 to 4, characterized in that: It also includes a surface material, which is located above the antenna and is provided with openings corresponding to the inner loop of the loop.

6. The anti-theft RFID tag suitable for multiple applications in near and far fields according to claim 1, characterized in that: The length of the antenna is 5-500 mm, the height is 5-500 mm, the antenna line width is 0.2-5 mm, and the antenna line distance is 0.2-5 mm.

7. The anti-theft RFID tag suitable for near-field and far-field multi-applications according to claim 1, characterized in that: The line width of the binding area is 0.2-1 mm, and the length is 0.2-100 mm.

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