A dual-frequency tag

Abstract

This utility model discloses a dual-frequency tag, relating to the field of RFID electronic tag technology. The dual-frequency tag includes: an antenna substrate; an antenna body comprising a high-frequency section and an ultra-high-frequency section. The high-frequency section includes a loop circuit and a high-frequency chip. The loop circuit is arranged circumferentially around the high-frequency chip to form a loop structure. The ultra-high-frequency section includes a circuit and an ultra-high-frequency chip, forming a U-shaped structure; a tag face material, which is adhered to the antenna body; and an adhesive layer, which is disposed on one side of the antenna substrate, with an area equal to that of the antenna substrate. This utility model, by simultaneously mounting an ultra-high-frequency antenna and a high-frequency antenna on the same antenna substrate, enables the RFID chip to simultaneously operate at two frequency bands, improving production efficiency and material utilization, shortening the production cycle, and reducing production costs. Furthermore, the adhesive layer adhered to the other side of the antenna substrate allows for quick installation by bonding the dual-frequency tag to the surface of an object, expanding its application scenarios.

Description

Technical Field

[0001] This utility model relates to the field of RFID electronic tag technology, and in particular to a dual-frequency tag. Background Technology

[0002] With the rapid development of the Internet of Things and intelligent manufacturing, electronic tags (such as RFID tags) are core components for item identification and data carriers. Currently, RFID tags are mainly divided into three categories: low frequency (LF), high frequency (HF), and ultra-high frequency (UHF). Under normal circumstances, a tag is only made with one frequency. However, with the continuous updating of usage scenarios, more and more usage scenarios require tags to have multiple operating frequencies simultaneously.

[0003] Existing RFID tags are generally single-frequency electronic tags, such as single low-frequency electronic tags, single high-frequency electronic tags, or single ultra-high-frequency electronic tags. There is a lack of electronic tags on the market that have two or more frequency bands at the same time. Moreover, dual-frequency electronic tags have problems with size and manufacturing process complexity. Since the design principles of the two frequency bands are different, the area ratio and coil size of each frequency band are different, making it difficult to meet the requirements of small size and high performance.

[0004] Therefore, there is a need for an RFID tag that can improve material utilization and has multiple operating frequencies. Utility Model Content

[0005] The main purpose of this invention is to provide a dual-frequency tag, which aims to solve the problems of low material utilization and single frequency band of existing RFID tags.

[0006] To achieve the above objectives, the present invention proposes a dual-frequency tag, comprising:

[0007] Antenna substrate;

[0008] The antenna body is bonded to one side of the antenna substrate. The antenna body includes a high-frequency section and an ultra-high-frequency section, which are spaced apart. The high-frequency section includes a loop circuit and a high-frequency chip. The loop circuit is arranged around the circumference of the high-frequency chip and connected to the high-frequency chip through pins. The high-frequency section forms a loop structure. The ultra-high-frequency section includes a detour circuit and an ultra-high-frequency chip. The detour circuit extends along both sides of the ultra-high-frequency chip. The ultra-high-frequency section forms a zigzag structure.

[0009] A label face material, wherein the label face material is adhered to the antenna body on the side away from the antenna substrate;

[0010] An adhesive layer is disposed on the antenna substrate on a side away from the antenna body, and the area of ​​the adhesive layer is equal to the area of ​​the antenna substrate.

[0011] Preferably, the high-frequency section further includes a high-frequency tuning section, and the number of high-frequency tuning sections is two. The two high-frequency tuning sections are respectively disposed at both ends of the loop circuit and are connected together.

[0012] Preferably, the high-frequency tuning section includes a first tuning section and a second tuning section. The first tuning section is disposed on the loop line at one end close to the high-frequency chip, and the second tuning section is disposed on the loop line at one end away from the high-frequency chip. The first tuning section and the second tuning section are connected by a connecting wire.

[0013] Preferably, the ultra-high frequency section further includes an ultra-high frequency tuning section, and the number of ultra-high frequency tuning sections is two, with the two ultra-high frequency tuning sections symmetrically arranged at both ends of the detour line.

[0014] Preferably, the detour route includes a first bend and a second bend, one end of the first bend is connected to the ultra-high frequency chip via a pin, and the other end of the first bend is connected to the second bend.

[0015] Preferably, the antenna substrate is made of PET, the antenna substrate has the same area as the label surface material, and the antenna substrate is connected to both the high-frequency section and the ultra-high-frequency section.

[0016] This invention combines an ultra-high frequency antenna and a high frequency antenna on the same antenna substrate, enabling the RFID chip to operate on two frequency bands simultaneously. Furthermore, antenna production and tag assembly can be completed in a single process, improving production efficiency and material utilization, shortening the production cycle, and reducing production costs. Simultaneously, an adhesive layer bonded to the other side of the antenna substrate allows for quick installation of the dual-frequency tag onto the object's surface, expanding its application scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a dual-frequency tag according to an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of a dual-frequency tag according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of a dual-frequency tag according to an embodiment of the prior art.

[0021] Explanation of icon numbers:

[0022] label name label name 1000 Dual-frequency tags 100 Antenna substrate 200 Antenna body 210 High frequency section 211 Loop Line 212 High frequency chip 213 High-frequency tuning section 213A First Tuning Section 213B Second Tuning Section 220 Ultra-high frequency section 221 Detour route 221A First bend area 221B Second bend area 222 Ultra-high frequency chip 223 Ultra-high frequency tuning section 300 Label face material 400 Adhesive layer 500 Connecting Flying Line

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] It should be noted that all directional indicators in this embodiment are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0027] like Figures 1-3As shown, this utility model proposes a dual-frequency tag 1000, comprising: an antenna substrate 100; an antenna body 200, the antenna body 200 being adhered to one side of the antenna substrate 100, the antenna body 200 including a high-frequency section 210 and an ultra-high-frequency section 220, the high-frequency section 210 and the ultra-high-frequency section 220 being spaced apart, the high-frequency section 210 including a loop circuit 211 and a high-frequency chip 212, the loop circuit 211 being arranged circumferentially around the high-frequency chip 212 and connected to the high-frequency chip 212 through pins, the high-frequency section 21... The antenna body 200 forms a ring structure, including a detour line 221 and an ultra-high frequency chip 222. The detour line 221 extends along both sides of the ultra-high frequency chip 222, and the ultra-high frequency part 220 forms a zigzag structure. The label material 300 is adhered to the antenna body 200 on the side away from the antenna substrate 100. The adhesive layer 400 is disposed on the antenna substrate 100 on the side away from the antenna body 200, and the area of ​​the adhesive layer 400 is equal to the area of ​​the antenna substrate 100.

[0028] It is understood that the ultra-high frequency involved in this utility model is also known as extra-high frequency or UHF (Ultra High Frequency), which specifically refers to the radio wave frequency band with a wavelength range of 1m to 1dm and a frequency of 300 to 3000MHz; high frequency is HF (High Frequency), which corresponds to a frequency of 3 to 30MHz.

[0029] In this embodiment, the high-frequency part 210 and the ultra-high-frequency part 220 in the antenna body 200 are both disposed on the top surface of the antenna substrate 100 and the top surface is coated with pressure-sensitive adhesive. The high-frequency part 210, the ultra-high-frequency part 220 and the tag surface material 300 are bonded together by the pressure-sensitive adhesive, so that the RFID tag can have both high-frequency and ultra-high-frequency operating frequency bands at the same time.

[0030] In detail, in this embodiment, the overall structure of the high-frequency section 210 and the ultra-high-frequency section 220 is rectangular, and the width distance is the same. This results in less waste generated during the production process, while also allowing them to be bonded to the same antenna substrate 100. Compared to... Figure 3The prior art shown here, by setting the two frequency bands on two separate antenna substrates 100, enables unified processing, shortens production steps, reduces production costs, and improves the stability of the dual-frequency tag 1000. It also improves material utilization and production speed while adapting to the shape and structure of the antenna substrate 100. A gap is provided between the high-frequency section 210 and the ultra-high-frequency section 220. This gap optimizes their relative positions and reduces field coupling, thus preventing mutual interference between the high-frequency section 210 and the ultra-high-frequency section 220. The dual-frequency tag 1000 involved in this invention also includes an adhesive layer 400, which is used to fix it to the surface of the device. In this embodiment, both the high-frequency chip 212 and the ultra-high-frequency chip 222 are located at the end away from the loop line 211 or the detour line 221. The high-frequency chip 212 is located at the geometric center of the loop line 211, and the ultra-high-frequency chip 222 is located on the axis of the detour line 221. The ultra-high-frequency chip 222 is connected to the detour line 221 through a rectangular antenna pin, which helps to reduce signal interference and ensure the heat dissipation effect of the ultra-high-frequency chip 222, preventing performance degradation or damage due to overheating.

[0031] In one embodiment, the high-frequency section 210 further includes a high-frequency tuning section 213. There are two high-frequency tuning sections 213, which are respectively disposed at both ends of the loop line 211 and connected to each other.

[0032] In this embodiment, the high-frequency tuning unit 213 is used to adjust the resonant frequency and radiation performance, thereby regulating and optimizing signal transmission. Specifically, the high-frequency tuning unit 213 is disposed at both ends of the loop circuit 211. The high-frequency chip 212 is connected to the side of the loop circuit 211 near the geometric center through the antenna pin and is spaced apart from the high-frequency tuning unit 213, thereby achieving performance optimization while avoiding mutual interference.

[0033] In one embodiment, the high-frequency tuning unit 213 includes a first tuning unit 213A and a second tuning unit 213B. The first tuning unit 213A is disposed on the loop line 211 at one end close to the high-frequency chip 212, and the second tuning unit 213B is disposed on the loop line 211 at one end away from the high-frequency chip 212. The first tuning unit 213A and the second tuning unit 213B are connected by a connecting wire 500.

[0034] In this embodiment, the first tuning section 213A has a rectangular structure with a missing corner, and the second tuning section 213B has a triangular structure. The loop circuit 211 has a bend corresponding to the second tuning section 213B, which avoids the second tuning section 213B. The first tuning section 213A has a missing corner corresponding to the bend. After the second tuning section 213B and the loop circuit 211 cooperate, the high-frequency section 210 forms a rectangular structure, which facilitates the processing and production of the high-frequency section 210. Specifically, the first tuning section 213A and the second tuning section 213B are connected by a connecting wire 500.

[0035] In one embodiment, the ultra-high frequency section 220 further includes an ultra-high frequency tuning section 223, and there are two ultra-high frequency tuning sections 223, which are symmetrically arranged at both ends of the detour line 221.

[0036] In this embodiment, both ultra-high frequency tuning units 223 are rectangular structures and are respectively disposed at both ends of the detour line 221. The ultra-high frequency chip 222 is connected by rectangular pins that are vertically disposed along the middle section of the detour line 221. That is, the detour line 221 extends horizontally to both sides from the ultra-high frequency chip 222. The two ultra-high frequency tuning units 223 are respectively disposed at the ends of the left and right ends of the detour line 221. The two ultra-high frequency tuning units 223 are used to adjust the resonant frequency and radiation performance and avoid interfering with the ultra-high frequency chip 222.

[0037] In one embodiment, the detour line 221 includes a first bending region 221A and a second bending region 221B. One end of the first bending region 221A is connected to the ultra-high frequency chip 222 via a pin, and the other end of the first bending region 221A is connected to the second bending region 221B.

[0038] In this embodiment, the UHF chip 222 is connected to the first bending area 221A through a rectangular pin. The width of the first bending area 221A is smaller than the width of the second bending area 221B to avoid the rectangular pin. The sum of the width of the rectangular pin and the width of the first bending area 221A is the same as the width of the first bending area 221A, so that the UHF section 220 has a rectangular shape, which is convenient for processing and producing RFID tags.

[0039] In one embodiment, the antenna substrate 100 is made of PET, and the antenna substrate 100 has the same area as the label surface material 300. The antenna substrate 100 is connected to both the high-frequency section 210 and the ultra-high-frequency section 220.

[0040] In this embodiment, the width and length of the antenna substrate 100 are equal to those of the tag surface material 300, reducing the risk of tearing and other damage during use. This also facilitates automated collection or further packaging of the dual-frequency tag by operators. The antenna substrate 100 is made of PET (polyethylene terephthalate), which provides a certain degree of barrier properties against gases and moisture, and possesses excellent mechanical properties and plasticity.

[0041] This invention enables the RFID chip to simultaneously operate on two frequency bands by simultaneously mounting an ultra-high frequency (UHF) antenna and a high-frequency (HF) antenna on the same antenna substrate. Furthermore, by allowing antenna production and tag assembly to be completed in a single process and designing the HF and UHF sections as rectangular structures, this invention achieves improved production efficiency and material utilization, shortened production cycles, and reduced production costs. Simultaneously, an adhesive layer bonded to the other side of the antenna substrate allows for quick and easy installation of the dual-frequency tag onto object surfaces, expanding its application scenarios.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A dual-frequency tag, characterized in that, include: Antenna substrate; The antenna body is bonded to one side of the antenna substrate. The antenna body includes a high-frequency section and an ultra-high-frequency section, which are spaced apart. The high-frequency section includes a loop circuit and a high-frequency chip. The loop circuit is arranged around the circumference of the high-frequency chip and connected to the high-frequency chip through pins. The high-frequency section forms a loop structure. The ultra-high-frequency section includes a detour circuit and an ultra-high-frequency chip. The detour circuit extends along both sides of the ultra-high-frequency chip. The ultra-high-frequency section forms a zigzag structure. A label face material, wherein the label face material is adhered to the antenna body on the side away from the antenna substrate; An adhesive layer is disposed on the antenna substrate on a side away from the antenna body, and the area of ​​the adhesive layer is equal to the area of ​​the antenna substrate.

2. The dual-frequency tag as described in claim 1, characterized in that, The high-frequency section also includes a high-frequency tuning section, and there are two high-frequency tuning sections. The two high-frequency tuning sections are respectively disposed at both ends of the loop circuit and are connected together.

3. The dual-frequency tag as described in claim 2, characterized in that, The high-frequency tuning section includes a first tuning section and a second tuning section. The first tuning section is located on the loop line at one end close to the high-frequency chip, and the second tuning section is located on the loop line at the other end away from the high-frequency chip. The first tuning section and the second tuning section are connected by a connecting wire.

4. The dual-frequency tag as described in claim 3, characterized in that, The ultra-high frequency section also includes an ultra-high frequency tuning section, and there are two ultra-high frequency tuning sections, which are symmetrically arranged at both ends of the detour line.

5. The dual-frequency tag as described in claim 4, characterized in that, The detour route includes a first bend and a second bend. One end of the first bend is connected to the ultra-high frequency chip via a pin, and the other end of the first bend is connected to the second bend.

6. The dual-frequency tag as described in claim 1, characterized in that, The antenna substrate is made of PET, and the antenna substrate has the same area as the label surface material. The antenna substrate is connected to both the high-frequency section and the ultra-high-frequency section.

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