Cross-plane gap label
By designing cross-plane gap labels, the electromagnetic wave characteristics of the antenna layer are destroyed by using the vulnerable structure, the problem of easy secondary use of gap labels is solved, and the effect of preventing counterfeit and inferior items is achieved.
Patent Information
- Application Number
- CN202422294695.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-20
AI Technical Summary
Existing RFID gap tags are easily used in secondary use, resulting in abnormal transfer of counterfeit and shoddy products and items, and lack of effective protective measures.
A cross-plane gap label is designed, including an antenna layer, an intermediate substrate layer and a vulnerable structure. The vulnerable structure is a fragile material layer and/or cutting line. The electromagnetic wave characteristics of the antenna layer are changed by the destruction of the vulnerable structure to prevent secondary use.
Effectively prevent the secondary use of gap labels, prevent the abnormal transfer of counterfeit and shoddy products and items, and create a healthy and orderly market environment.
Smart Images
Figure CN223123464U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cross - plane slot tag, belonging to the technical field of microwave communication. Background Art
[0002] With the increasingly complex application environment of RFID systems, such as logistics and supply chain management, intelligent warehouse management, intelligent transportation, asset management, etc., pasting RFID tags on the product surface for product identity recognition is the first step in intelligent control and intelligent manufacturing. After forming identity management, RFID tags can perform functions such as efficient identification, real - time tracking, anti - counterfeiting traceability, and big data support. The secondary use of RFID tags is often accompanied by product counterfeiting, unauthorized transfer or theft of assets.
[0003] A slot antenna is an antenna formed by opening a slot in a conductor, also known as a slotted antenna. The typical slot shape is rectangular. When a radio - frequency electromagnetic field is excited on the slot, the slot antenna will radiate electromagnetic waves into space. By adjusting the shape and area of the slot, impedance matching under different sizes and different materials can be achieved. Summary of the Invention
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a cross - plane slot tag, which can prevent the secondary use of the slot tag and effectively prevent the abnormal transfer and counterfeiting of items. To achieve the above - mentioned purpose, the utility model is implemented by the following technical solutions:
[0005] The utility model provides a cross - plane slot tag, including an antenna layer, an intermediate substrate layer, and a vulnerable structure;
[0006] The antenna layer is bent into upper and lower layers, the upper layer is a first planar antenna, and the lower layer is a second planar antenna; the antenna layer includes at least one spanning slot;
[0007] The intermediate substrate layer is arranged between the first planar antenna and the second planar antenna, and is used for isolating and fixing the first planar antenna and the second planar antenna;
[0008] The vulnerable structure is a fragile material layer and / or a cutting line;
[0009] The fragile material layer is arranged between the second planar antenna and the intermediate substrate layer. When the cross - plane slot tag is used for the second time, the fragile material layer breaks, the second planar antenna is damaged at the break of the fragile material layer, and the electromagnetic waves radiated by the antenna layer change;
[0010] The cutting line is arranged on the second planar antenna. When the cross - plane slot tag is used for the second time, the second planar antenna is damaged along the cutting line, and the electromagnetic waves radiated by the antenna layer change.
[0011] Optionally, it further includes a planar substrate layer, which is bent into upper and lower layers. The upper layer is the first planar substrate, and the lower layer is the second planar substrate;
[0012] The first planar substrate is disposed between the first planar antenna and the intermediate substrate layer for realizing the fixed connection between the first planar antenna and the intermediate substrate layer;
[0013] The second planar substrate is disposed between the second planar antenna and the intermediate substrate layer for realizing the fixed connection between the second planar antenna and the intermediate substrate layer.
[0014] Optionally, the fragile material layer is a part of the second planar substrate layer.
[0015] Optionally, the cutting line vertically penetrates the second planar antenna and vertically penetrates the second planar substrate layer.
[0016] Optionally, a surface material layer is disposed above the first planar antenna for protecting the first planar antenna and distinguishing different cross-plane gap tags.
[0017] Optionally, an adhesive layer is disposed below the second planar antenna for pasting the cross-plane gap tag at a target position.
[0018] Optionally, the antenna layer is a conductive thin film with a thickness of 1 to 200 um.
[0019] Optionally, the resonance frequency point of the electromagnetic wave radiated by the antenna layer is negatively correlated with the relative dielectric constant of the intermediate substrate layer and negatively correlated with the area of the intermediate substrate layer.
[0020] Compared with the prior art, the beneficial effects achieved by a cross-plane gap tag provided by an embodiment of the present invention include:
[0021] The present invention includes an antenna layer, an intermediate substrate layer and a vulnerable structure; the antenna layer is bent into upper and lower layers, the upper layer is the first planar antenna, and the lower layer is the second planar antenna; the antenna layer includes at least one cross gap; the intermediate substrate layer is disposed between the first planar antenna and the second planar antenna for isolating and fixing the first planar antenna and the second planar antenna; the present invention can realize impedance matching under different sizes and different materials by adjusting the shape and area of the gap, and has a good reading effect in various application scenarios of different back materials;
[0022] The vulnerable structure of the present utility model is a fragile material layer and / or a cutting line; the fragile material layer is disposed between the second planar antenna and the intermediate substrate layer. When the cross-plane gap label is reused, the fragile material layer is broken, and the second planar antenna is damaged at the broken part of the fragile material layer, and the electromagnetic wave radiated by the antenna layer is changed; the cutting line is disposed on the second planar antenna. When the cross-plane gap label is reused, the second planar antenna is damaged along the cutting line, and the electromagnetic wave radiated by the antenna layer is changed; the present utility model can prevent the reuse of the gap label, effectively prevent counterfeit and shoddy products, prevent abnormal transfer of items, and create a healthy and orderly market environment. Description of the Drawings
[0023] Figure 1 It is a schematic structural diagram of a cross-plane gap label provided in Embodiment 1 of the present utility model;
[0024] Figure 2 It is a schematic diagram of the first planar antenna in Case 1 of a cross-plane gap label provided in Embodiment 1 of the present utility model;
[0025] Figure 3 It is a schematic diagram of the second planar antenna in Case 1 of a cross-plane gap label provided in Embodiment 1 of the present utility model;
[0026] Figure 4 It is a schematic diagram of the antenna layer in Case 1 of a cross-plane gap label provided in Embodiment 1 of the present utility model;
[0027] Figure 5 It is the calculation result of the S parameter when the area of the first gap changes in Case 1 of a cross-plane gap label provided in Embodiment 1 of the present utility model;
[0028] Figure 6 It is the calculation result of the S parameter when the area of the second gap changes in Case 1 of a cross-plane gap label provided in Embodiment 1 of the present utility model;
[0029] Figure 7 It is the calculation result of the S parameter when the area of the third gap changes in Case 1 of a cross-plane gap label provided in Embodiment 1 of the present utility model;
[0030] Figure 8 It is the calculation result of the S parameter when the area of the fourth gap changes in Case 1 of a cross-plane gap label provided in Embodiment 1 of the present utility model;
[0031] Figure 9 It is a schematic diagram of the first planar antenna in Case 2 of a cross-plane gap label provided in Embodiment 2 of the present utility model;
[0032] Figure 10Schematic diagram of the second planar antenna in Case 2 of a cross - plane gap label provided by Embodiment 2 of the present utility model.
[0033] In the figure:
[0034] 1. First planar antenna; 2. Second planar antenna; 3. Intermediate substrate layer; 4. Fragile material layer; 5. Cutting line;
[0035] 601. First gap, 602. Second gap, 603. Third gap, 604. Fourth gap, 605. Fifth gap, 606. Sixth gap, 607. Seventh gap, 608. Eighth gap, 609. Ninth gap, 610. Tenth gap;
[0036] 7. First planar substrate; 8. Second planar substrate; 9. Face material layer; 10. Adhesive layer. Detailed implementation manners
[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper / lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0039] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, terms such as "installed", "set / sleeved with", "socketed", "connected", etc. should be understood in a broad sense. For example, "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Embodiment 1
[0040] As Figure 1As shown, in this embodiment, a case of a cross-plane slot tag includes an antenna layer, an intermediate substrate layer 3, a planar substrate layer, a vulnerable structure, a face layer 9, and an adhesive layer 10.
[0041] The antenna layer is bent into upper and lower layers. The upper layer is the first planar antenna 1, and the lower layer is the second planar antenna 2.
[0042] As Figure 2 and Figure 4 shown, in this embodiment, there are multiple slots on the first planar antenna 1, and a feed unit is provided in one of the slots. As Figure 3 and Figure 4 shown, in this embodiment, there are multiple slots on the second planar antenna 2. As Figure 4 shown, the antenna layer includes at least one cross slot that spans the first planar antenna 1 and the second planar antenna 2.
[0043] All the slots are slots of any shape, and there is no order among the slots. For the convenience of description, they are marked as the first slot 601, the second slot 602, etc.
[0044] As Figure 4 shown, in the cross-plane slot tag provided in this embodiment, the first slot 601 and the second slot 602 are cross slots, and the third slot 603 and the fourth slot 604 are provided on the first planar antenna 1. A feed unit is placed at the connection of the third slot 603 and the first slot 601. The fourth slot 604 is not connected to other slots.
[0045] The antenna layer is a conductive thin film, that is, the first planar antenna 1 and the second planar antenna 2 are conductive thin films, and the film thickness is 1 to 200 um.
[0046] As Figure 2 shown, the intermediate substrate layer 3 is disposed between the first planar antenna 1 and the second planar antenna 2, used to isolate the first planar antenna 1 and the second planar antenna 2, and at the same time used to fix the first planar antenna 1 and the second planar antenna 2, so that the cross-plane slot tag is in a flattened state.
[0047] The relative permittivity of the intermediate substrate layer 3 is negatively correlated with the frequency of the cross-plane slot tag. Specifically, if the application environment requires a relatively small total size of the cross-plane slot tag, then a material with a relatively large relative permittivity is selected for the intermediate substrate layer 3.
[0048] The resonant frequency point of the electromagnetic wave radiated by the antenna layer is negatively correlated with the relative permittivity of the intermediate substrate layer 3 and negatively correlated with the area of the intermediate substrate layer 3.
[0049] As Figure 1As shown in the figure, the planar substrate layer is bent into upper and lower layers. The upper layer is the first planar substrate 7, and the lower layer is the second planar substrate 8. The first planar substrate 7 is disposed between the first planar antenna 1 and the intermediate substrate layer 3 for realizing the fixed connection between the first planar antenna 1 and the intermediate substrate layer 3. The second planar substrate 8 is disposed between the second planar antenna 2 and the intermediate substrate layer 3 for realizing the fixed connection between the second planar antenna 2 and the intermediate substrate layer 3.
[0050] It should be noted that the planar substrate layer is not a necessary structure.
[0051] The vulnerable structure is the fragile material layer 4 and / or the cutting line 5.
[0052] The fragile material layer 4 is disposed between the second planar antenna 2 and the intermediate substrate layer 3. When the cross-plane gap label is reused, the fragile material layer 4 breaks, and the second planar antenna 2 is damaged at the breakage of the fragile material layer 4, and the electromagnetic wave radiated by the antenna layer changes.
[0053] In this embodiment, as Figure 1 shown, the planar substrate layer is provided, and the fragile material layer 4 is a part of the second planar substrate 8 layer.
[0054] The cutting line 5 is disposed on the second planar antenna 2. When the cross-plane gap label is reused, the second planar antenna 2 is damaged along the cutting line 5, and the electromagnetic wave radiated by the antenna layer changes.
[0055] It should be noted that the cutting line 5 is a cutting line 5 with any shape and any length. It can be obtained by physical cutting or by chemical etching.
[0056] In this embodiment, as Figure 1 shown, the cutting line 5 vertically penetrates the second planar antenna 2, and vertically penetrates the second planar substrate 8 layer (especially vertically penetrates the fragile material layer 4) and the intermediate substrate layer 3. This setting can reduce the difficulty of the change of the vulnerable structure during reuse.
[0057] During the reuse of this embodiment, the second planar antenna 2 is damaged at the breakage of the fragile material layer 4 and / or at the cutting line 5, and the electromagnetic wave radiated by the antenna layer changes, which can prevent the secondary use of the gap label, effectively prevent counterfeit and shoddy products, prevent the private transfer or theft of assets, and create a healthy and orderly market environment.
[0058] As Figure 1 shown, the surface layer 9 is disposed above the first planar antenna 1 for protecting the first planar antenna 1 and can also print or print graphics and texts to distinguish different cross-plane gap labels.
[0059] As Figure 1As shown in the figure, the adhesive layer 10 is disposed below the second planar antenna 2 and is used to paste the cross-plane gap label at the target position.
[0060] In this embodiment, by adjusting the Figure 4 shapes and areas of the gaps in the antenna layer as shown in the figure, the reflection system of the cross-plane gap label is adjusted, and impedance matching can be achieved under different sizes and different materials, and good reading effects are obtained in various application scenarios of different back materials.
[0061] As Figure 5 shown in the figure, it is a schematic diagram of the calculation results of the matching S parameter (reflection coefficient) when adjusting the area of the first gap 601. As Figure 5 shown in the figure, when the area of the first gap 601 changes, both the value and frequency point of the S parameter change significantly; among them, the higher the frequency point, the better the value of the S parameter.
[0062] As Figure 6 shown in the figure, it is a schematic diagram of the calculation results of the matching S parameter (reflection coefficient) when adjusting the area of the second gap 602. As Figure 6 shown in the figure, the influence of the area of the second gap 602 on the S parameter is small. Therefore, by optimizing the shape of the second gap 602, the structure of the fragile material layer 4 and / or the cutting line 5 can be improved without affecting the matching of the cross-plane gap label. The second gap 602 can be used to assist in improving the structural function of the cross-plane gap label.
[0063] As Figure 7 shown in the figure, it is a schematic diagram of the calculation results of the matching S parameter (reflection coefficient) when adjusting the area of the third gap 603. As Figure 7 shown in the figure, when the area of the third gap 603 changes, both the value and frequency point of the S parameter change significantly. However, there is no linear relationship between the S parameter and the frequency point. By optimizing the areas of the first gap 601 and the third gap 603 in combination, ideal performance parameters can be designed.
[0064] As Figure 8 shown in the figure, it is a schematic diagram of the calculation results of the matching S parameter (reflection coefficient) when adjusting the area of the fourth gap 604. As Figure 8 shown in the figure, when the area of the fourth gap 604 changes, the value of the S parameter does not change significantly. When the area of the fourth gap 604 becomes larger, the frequency point as a whole shows a downward trend. Therefore, when the S parameter value of the cross-plane gap label is good but the frequency point is incorrect, the frequency point can be adjusted by adjusting the area of the fourth gap 604. Embodiment 2
[0065] This embodiment provides a second case of a cross-plane gap label. In this embodiment, as Figure 9 and Figure 10As shown, the first gap 601 and the second gap 602 are spanning gaps. The part of the first gap 601 in the second planar antenna 2 is the ninth gap 609, and the part of the second gap 602 in the second planar antenna 2 is the tenth gap 610. As Figure 9 shown, the third gap 603, the fourth gap 604, the fifth gap 605, the sixth gap 606, the seventh gap 607, and the eighth gap 608 are independently arranged on the first planar antenna 1 and are not connected to other gaps.
[0066] Specifically, the areas of the gaps are as follows:
[0067] The area of the first gap 601 is: 70 square millimeters, and the area of the second gap 602 is: 83 square millimeters.
[0068] The area of the third gap 603 is: 24 square millimeters, and the area of the fourth gap 604 is: 24 square millimeters.
[0069] The area of the fifth gap 605 is: 55 square millimeters, and the area of the sixth gap 606 is: 90 square millimeters.
[0070] The area of the seventh gap 607 is: 24 square millimeters, and the area of the eighth gap 608 is: 24 square millimeters.
[0071] The area of the ninth gap 609 is: 13 square millimeters, and the area of the tenth gap 610 is: 16 square millimeters.
[0072] Use a handheld device with the model Orca 50 Air and a power of 2W to test Case 2 in this embodiment. When the tag is used for the first time and the second time, the reading distances in different back material application scenarios are as shown in Table 1:
[0073] Table 1 Reading distances in different back material application scenarios
[0074]
[0075] This design scheme has good trial reading effects in various different back material application scenarios. When the tag is used for the second time, the reading distance is only about 0.3 meters in various different scenarios.
[0076] Case 2 provided in this embodiment can prevent the secondary use of gap tags, can effectively prevent counterfeit and shoddy products, prevent the private transfer or theft of assets, prevent the abnormal transfer of items, and create a healthy and orderly market environment.
[0077] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0078] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0079] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A cross-plane gap label, characterized in that, It includes an antenna layer, an intermediate substrate layer and a vulnerable structure; The antenna layer is bent into upper and lower layers, the upper layer is a first planar antenna, and the lower layer is a second planar antenna; the antenna layer includes at least one spanning gap; The intermediate substrate layer is disposed between the first planar antenna and the second planar antenna for isolating and fixing the first planar antenna and the second planar antenna; The vulnerable structure is a fragile material layer and / or a cutting line; The fragile material layer is disposed between the second planar antenna and the intermediate substrate layer. When the cross-plane gap label is reused, the fragile material layer fractures, the second planar antenna is damaged at the fracture of the fragile material layer, and the electromagnetic wave radiated by the antenna layer changes; The cutting line is disposed on the second planar antenna. When the cross-plane gap label is reused, the second planar antenna is damaged along the cutting line, and the electromagnetic wave radiated by the antenna layer changes.
2. The cross-plane slit label according to claim 1, wherein It further includes a planar substrate layer, which is bent into upper and lower layers, the upper layer is a first planar substrate, and the lower layer is a second planar substrate; The first planar substrate is disposed between the first planar antenna and the intermediate substrate layer for realizing the fixed connection between the first planar antenna and the intermediate substrate layer; The second planar substrate is disposed between the second planar antenna and the intermediate substrate layer for realizing the fixed connection between the second planar antenna and the intermediate substrate layer.
3. The cross-plane slit label according to claim 2, wherein The fragile material layer is a part of the second planar substrate layer.
4. The cross-plane slit label according to claim 2, wherein The cutting line vertically penetrates the second planar antenna and vertically penetrates the second planar substrate layer.
5. The cross-plane slit label according to claim 1, wherein A surface material layer is disposed above the first planar antenna for protecting the first planar antenna and distinguishing different cross-plane gap labels.
6. The cross-plane gap label according to claim 1, wherein A back adhesive layer is disposed below the second planar antenna for pasting the cross-plane gap label at the target position.
7. The cross-plane slit label according to claim 1, wherein The antenna layer is a conductive thin film with a thickness of 1 to 200 μm.
8. The cross-plane gap label according to claim 1, wherein The resonant frequency point of the electromagnetic wave radiated by the antenna layer is negatively correlated with the relative permittivity of the intermediate substrate layer and negatively correlated with the area of the intermediate substrate layer.