An antenna and electronic tag

Abstract

The application discloses an antenna, which comprises a radiation surface, a first side of the radiation surface has a notch, the notch is located in the middle of the first side, the radiation surface is provided with a semicircular hole, the notch is located on a straight line side of the semicircular hole, a slit structure is arranged on an arc of the semicircular hole, and the slit structure comprises at least two slits. The application further discloses an electronic tag.

Description

Technical Field

[0001] This application relates to the field of antennas, and includes, but is not limited to, an antenna and an electronic tag. Background Technology

[0002] Radio Frequency Identification (RFID) electronic tags include universal tags applicable to various products and customized tags tailored to specific products. The performance of an electronic tag is determined by its built-in antenna. Universal tags suffer from performance degradation; their performance decreases to varying degrees when applied to packaging materials different from the product itself, and in some cases, they cannot be reliably read when applied to a particular product category. Customized tags allow multiple types of tags to coexist in the same environment. In such cases, the labeling process requires selecting the appropriate tag based on the contents, increasing labor and management costs. Furthermore, given a fixed total number of tags used in the warehouse, the usage of individual tags decreases accordingly, leading to ineffective cost amortization and increased cost per tag. Therefore, there is a lack of antennas or electronic tags suitable for various application types with reliable readability. Summary of the Invention

[0003] This application provides an antenna and an electronic tag to solve at least one problem existing in the related art, which can be applied to objects with various attributes and has reliable readability.

[0004] The technical solution of this application embodiment is implemented as follows:

[0005] In a first aspect, embodiments of this application provide an antenna, the antenna comprising:

[0006] Radiation surface;

[0007] The first side of the radiating surface has a gap, and the gap is located in the middle of the first side;

[0008] The radiating surface is provided with a semi-circular hole, the notch is located on the straight side of the semi-circular hole, and a slit structure is provided on the arc of the semi-circular hole, the slit structure including at least two slits.

[0009] Secondly, embodiments of this application provide an electronic tag, including a chip and the aforementioned antenna, wherein the chip and the antenna are connected.

[0010] In this embodiment of the application, an antenna and a tag are provided, including: a radiating surface; a notch is present on a first side of the radiating surface, the notch being located in the middle of the first side; a semi-circular hole is provided on the radiating surface, the notch being located on the straight side of the semi-circular hole, and a slit structure is provided on the arc of the semi-circular hole, the slit structure including at least two slits. By providing the semi-circular hole in the radiating surface and the slit structure on the semi-circular hole, the operating frequency band of the antenna is extended, so that the frequency band supported by the antenna covers the frequency after the antenna is interfered with by metal, thereby resisting the influence of metal on the antenna, and enabling the antenna to have reliable reading effect in various scenarios such as plastic, paper, and metal. Attached Figure Description

[0011] Figure 1 A schematic diagram of an optional antenna structure provided in an embodiment of this application;

[0012] Figure 2 A schematic diagram of an optional antenna structure provided in an embodiment of this application;

[0013] Figure 3 A schematic diagram of an optional antenna structure provided in an embodiment of this application;

[0014] Figure 4 A schematic diagram of an optional antenna structure provided in an embodiment of this application;

[0015] Figure 5 A schematic diagram of an optional antenna structure provided in an embodiment of this application;

[0016] Figure 6 A schematic diagram of an optional antenna structure provided in an embodiment of this application;

[0017] Figure 7 A schematic diagram of an optional structure of an electronic tag provided in an embodiment of this application;

[0018] Figure 8 A schematic diagram of an optional structure of an electronic tag provided in an embodiment of this application;

[0019] Figure 9 A schematic diagram of an optional antenna structure provided in an embodiment of this application;

[0020] Figure 10 A schematic diagram of an optional structure of an electronic tag provided in an embodiment of this application;

[0021] Figure 11 A schematic diagram of an optional antenna structure provided in an embodiment of this application;

[0022] Figure 12 The return loss curve of the electronic tag under no-load condition provided in the embodiments of this application;

[0023] Figure 13 The orientation diagram of the electronic tag under no-load conditions provided in the embodiments of this application;

[0024] Figure 14 The return loss curve of the electronic tag provided in this application embodiment when it is attached to a backing material whose contents are metal;

[0025] Figure 15 The orientation diagram of the electronic tag provided in this application embodiment when the contents are metal and the backing is metal. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of the application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0027] The embodiments of this application can provide an information processing method and system, and a storage medium. In practical applications, the information processing method can be implemented by an information processing system, and the functional entities in the information processing system can be collaboratively implemented by the hardware resources of electronic devices (such as terminal devices or servers), such as computing resources like processors, and communication resources (such as those used to support various communication methods such as optical cables and cellular networks).

[0028] This application provides an antenna that can be used in electronic tags. When the antenna provided in this application is applied to electronic tags, it can be called a tag antenna.

[0029] The antenna provided in this application includes: a radiating surface; a notch is present on a first side of the radiating surface, the notch being located in the middle of the first side; a semi-circular hole is provided on the radiating surface, the notch being located on the straight side of the semi-circular hole, and a slot structure is provided on the arc of the semi-circular hole, the slot structure including at least two slots.

[0030] The radiating surface provided in this application embodiment can be rectangular, fan-shaped, circular, elliptical, or a variation of any of these shapes. A notch is provided on the edge of the radiating surface, and a semi-circular hole is provided along the notch. At least two slots are provided on the arc of the semi-circular hole, forming a slot structure, thereby realizing a slot antenna. In the slot antenna provided in this application embodiment, the current can be distributed along the edge of the semi-circular hole, the edge of the slot, and the edge of the radiating surface, thereby coordinating the operating frequency band through the current flow length on the antenna surface, thus extending the antenna's operating frequency band.

[0031] In one example, the antenna provided in this application embodiment supports an operating frequency band of [860MHz, 1000MHz]. When the antenna is attached to a paper package containing metal, the antenna supports an operating frequency band of [860MHz, 960MHz].

[0032] In this embodiment, the size of the antenna's radiating surface can be set according to the antenna's operating frequency band requirements.

[0033] The antenna provided in this application embodiment can cover the frequency band of the antenna when the frequency band is affected by metal, resist the influence of metal on the antenna, and have a reliable reading effect in various scenarios such as plastic, paper, and metal.

[0034] Taking a rectangular radiating surface as an example, the antenna provided in this embodiment is as follows: Figure 1 As shown, it includes: a radiating surface 101; the radiating surface 101 includes a vertical first side 1011 and a second side 1012, the length of the first side 1011 being greater than the length of the second side 1012; a notch 102 is present on the first side 1011 of the radiating surface 101, the notch 102 being located in the middle of the first side 1011; the radiating surface 101 is provided with a semi-circular hole 103, the notch 102 being located on the straight edge 1031 of the semi-circular hole 103, a first distance existing between the straight edge 1031 of the semi-circular hole 103 and the first side 1011; a slit structure is provided on the arc 1032 of the semi-circular hole 103, wherein the slit structure includes at least two slits 1033, the slits 1033 included in the slit structure may be uniformly distributed or non-uniformly distributed. The slit structure may include slit pairs symmetrically arranged based on a first centerline and / or asymmetrical slits without slits symmetrically arranged based on the first centerline.

[0035] In the following description, for the convenience of explaining the antenna structure, we will use a rectangular radiating surface as an example. In practical applications, the radiating surface can also be other shapes.

[0036] exist Figure 1 In the antenna shown, the longer side of the radiating surface is the first side, and the shorter side is the second side. The radiating surface has a semi-circular hole along the first direction where the second side is located, through a notch located in the middle of the first side, so that the notch is located on the straight side of the semi-circular hole.

[0037] Optionally, the gap structure may include a T-shaped gap or a deformed structure based on the T-shaped gap. The deformed structure based on the T-shaped gap may include a Y-shaped gap, or the transverse portion of the T-shaped gap may be an arc-shaped gap or a sawtooth-shaped gap, etc.

[0038] In the accompanying drawings provided in the embodiments of this application, the antenna is illustrated using a T-shaped slot as an example. In practical applications, the T-shaped slot can be replaced by a deformed structure based on the T-shaped slot.

[0039] The semi-circular hole has a straight edge and an arc. The straight edge is parallel to the first edge of the radiating surface, and the notch penetrates the first edge of the radiating surface and the straight edge of the semi-circular hole. Multiple slits are provided on the arc of the semi-circular hole. Each slit includes a connecting transverse portion and a longitudinal portion. The transverse slit can be straight, in which case it is a T-shaped slit. The transverse portion can also be an arc concave towards the center of the semi-circular hole, an arc convex away from the center of the semi-circular hole, a sawtooth shape, etc., in which case the slit is a variation of the T-shaped slit. This application embodiment does not limit the shape of the transverse portion of the slits provided in the semi-circular hole.

[0040] Optionally, the different gaps included in the gap structure have different widths.

[0041] Optionally, the different gaps included in the gap structure have the same width.

[0042] In this embodiment, the slot width affects the antenna impedance, thereby affecting the antenna's maximum receiving efficiency or maximum transmitting efficiency. The slot widths can be different or the same. When the widths of different slots are the same, the antenna's operating frequency band is adjusted based on the number and height of the slots, thus simplifying the antenna's structural design.

[0043] In this embodiment, when the gap structure includes multiple gaps, the heights of the different gaps can be the same or different. The distance from the end of the gap away from the arc is the height of the arc. For a T-shaped gap, the height of the T-shaped gap is the length of the vertical portion.

[0044] In some embodiments, the length of the side formed by the semi-circular hole and the slit structure is within a preset length range.

[0045] The preset length range is related to the wavelength λ of the radio waves transmitted / received by the antenna.

[0046] Optionally, the preset length range is determined based on λ / 8. Optionally, the preset length range is determined based on λ / 4.

[0047] In this embodiment of the application, the size of the preset length range can be determined according to actual needs, and this embodiment of the application does not impose any limitation on the size of the preset length range.

[0048] In this embodiment, the length of the side formed by the semicircular hole and the slot structure can be understood as the length from one end of the notch along the side of the semicircular hole and the side of the slot structure to the other end of the notch. The length of the side formed by the semicircular hole and the slot structure is kept within a preset length range, thus limiting the length of current flowing through the semicircular hole and the slot structure. This coordinates the antenna's operating frequency band, thereby extending the antenna's operating frequency band.

[0049] In some embodiments, such as Figure 2 As shown, the slit structure includes: a first slit and a second slit symmetrical to the first slit based on a first center line, the first slit and the second slit having the same size, and the first center line being the center line of the semi-circular hole.

[0050] In this embodiment, two gaps symmetrical about the first centerline can be considered as a pair of gaps, and a pair of gaps includes a first gap and a second gap. The gap structure may include one or more pairs of gaps, that is, it includes one or more first gaps, and each first gap has a second gap symmetrical about the first centerline.

[0051] exist Figure 2 In the antenna shown, the slot structure includes two sets of slot pairs. Slots 1033-1 and 1033-2 form one set of slot pairs, while slots 1033-3 and 1033-4 form another set. In practical applications, the number of slot pairs included in the antenna is not limited.

[0052] In some embodiments, the first gap is located at a 30-degree or 60-degree direction. Here, the second gap, which is symmetrical to the first gap located at the 30-degree direction, is located at 150 degrees, and the second gap corresponding to the first gap located at the 60-degree direction is located at 120 degrees.

[0053] When the slit structure includes multiple first slits, the positions of the different first slits are different. Here, the position of the first slit is based on the straight edge of the semi-circular hole as a reference. The slit structure may include a first slit in the 30-degree direction and / or a first slit in the 60-degree direction. For a first slit in the 30-degree direction, a symmetrical second slit is in the 150-degree direction. For a first slit in the 60-degree direction, a symmetrical second slit is in the 120-degree direction.

[0054] like Figure 3 As shown, gaps 1033-1 and 1033-2 form a gap pair, with gap 1033-1 located at 30 degrees and gap 1033-2 located at 150 degrees. Gaps 1033-3 and 1033-4 form a gap pair, with gap 1033-3 located at 60 degrees and gap 1033-4 located at 120 degrees.

[0055] In practical applications, the first gap can also be located at a 40-degree angle, and the symmetrical second gap can be located at a 140-degree angle. In this embodiment, the position of the first gap is not limited in any way.

[0056] In some embodiments, the height of the first gap located in the 30-degree direction is less than the height of the first gap located in the 60-degree direction.

[0057] In some embodiments, such as Figure 4 As shown, the gap structure includes a third gap 1033-5, which is set along the first center line.

[0058] In some embodiments, the height of the first gap is less than the height of the third gap.

[0059] In this embodiment, the number and height of the slots affect the length of the current and thus the operating bandwidth supported by the antenna. Furthermore, the number and height of the slots affect the direction of the current, thereby influencing the antenna's radiation pattern. Slots closer to the first center line have higher heights, resulting in a longer current flow path through that slot, thus improving the impedance matching between the slot and the chip.

[0060] In some embodiments, such as Figure 5 As shown, a first arm 1021 and a second arm 1022 are respectively provided on both sides of the notch 102 facing the semi-circular hole 103. The first arm 1021 and the second arm 1022 have the same size and are used to connect with the chip.

[0061] In this embodiment, the antenna is connected to the chip via a first arm and a second arm, such that the antenna receives current from the first arm, and the current flows along the edge of the semi-circular hole and the gap to the second arm, or the antenna receives current from the second arm, and the current flows along the edge of the semi-circular hole and the gap structure to the first arm. In this embodiment, the arrangement of the first and second arms facilitates the connection between the antenna and the chip.

[0062] In this embodiment, the impedance between the first arm and the second arm is the impedance of the antenna. The receiving / transmitting power of the antenna is adjusted by regulating the impedance between the first arm and the second arm. The antenna's receiving / transmitting efficiency is maximized when the impedance between the first arm and the second arm is conjugate to the impedance of the chip, i.e., impedance matching.

[0063] In some embodiments, such as Figure 6 As shown, the radiating surface 101 includes a first side 1011 and a second side 1012 perpendicular to the first side 1011. The radiating surface 101 is also provided with at least one third side 1013, and the two ends of the third side 1013 are respectively connected to the first side 1011 and the second side 1012.

[0064] exist Figure 7 In the antenna shown, the radiating surface 101 includes four third sides 1013. In practical applications, the number of third sides 1013 included in the radiating surface 101 can be less than 4.

[0065] In some embodiments, the third side is an arc, a straight line, or a sawtooth shape.

[0066] When the third side is an arc, a quarter of the arc surface can be cut off from the radiating surface to form the third side. Optionally, the radius of the quarter arc surface can be the same as the radius of the semi-circular hole.

[0067] This application also provides an electronic tag, such as... Figure 7 As shown, the electronic tag includes a chip 70 and Figures 1 to 6 The chip and the antenna are connected to the antenna shown in any of the figures.

[0068] In some embodiments, such as Figure 8 As shown, the electronic tag includes an antenna layer 802 and a protective layer 801, with the antenna located on the antenna layer 802 and the chip 70 located on the protective layer 801.

[0069] In this embodiment, the electronic tag may further include: an insulating layer for isolating the antenna layer from other media. The electronic tag may also include: self-adhesive and release paper for attaching the electronic tag to an adhesive surface. The adhesive surface may be made of paper, polystyrene foam, metal, etc.

[0070] The electronic tag provided in this application is a high-performance (performance no less than that of a completely non-metallic environment) universal (single linear) electronic tag that can be used in multiple scenarios (especially metallic environments) and for multiple types of items (paper packaging contents with properties of rigid, plastic or paper-based, polystyrene foam, etc.).

[0071] The following section will take tags and antennas in a warehouse management scenario as an example to further illustrate the tag antenna and tag provided in the embodiments of this application.

[0072] Modern enterprise warehouse management requires a significant amount of manpower for inventory counting. In practice, the lack of a detailed inventory plan and disorganized personnel division of labor can easily lead to inaccurate data. Therefore, using RFID tags to identify items stored in the warehouse, and employing handheld terminals or inventory robots to identify these tags during movement, compares the data with the inventory, ensures the accuracy of the quantity of items in the warehouse, reduces the error rate during inventory counting, and also alleviates the workload of manual inventory counting.

[0073] Handheld terminals or inventory robots equipped with RFID readers can replace human inventory checkers and complete the work more efficiently. Single-location warehousing involves a wide variety of goods, with diverse items and varying material properties. Currently, if all goods in a warehouse were to be tagged with RFID, tag cost is a significant consideration. Tag cost is inversely proportional to the quantity of the same tag used. For example, for the same linear tag type, the cost per tag for a total quantity of 1 million is lower than the price per tag for a total quantity of 100,000 or fewer. For this reason, warehouses generally prefer to use the same linear tag type, which also reduces the management costs of multiple tag types. However, from a technical perspective, different types of label attachment materials have drastically different effects on label performance. For example, the performance of a label may be significantly reduced when it is attached to the surface of a metallic product packaging. For instance, a label might have a maximum reading distance of 10 meters on a non-metallic product packaging surface, but only a few centimeters on a metallic product surface. Clearly, such a short sensing distance is insufficient to meet the requirements of long-distance inventory management.

[0074] Therefore, there is a lack of a high-performance (performance comparable to that of a completely non-metallic environment) and universal (single linear) electronic tag that can be applied to multiple scenarios (especially metallic environments), multiple types of items (paper packaging contents with properties of rigid, plastic or paper-based, polystyrene foam, etc.).

[0075] This application relates to a tag antenna for e-commerce, supporting multiple scenarios and product categories. The antenna's shape enhances its operating frequency band and environmental resistance. When the tag is affixed to the surface of corrugated cardboard packaging of a certain thickness, the tag antenna can resist the influence of the packaging's internal materials. Especially when the packaging contains metal products, the antenna gain is significantly increased, improving tag recognition accuracy and speed, thus meeting warehouse inventory requirements.

[0076] The tag antenna provided in this application embodiment is a slot antenna. In one example, the slot antenna is as follows: Figure 9As shown, the main radiating surface 901 (i.e., radiating surface 101) is rectangular. A quarter-circular arc 902 of the same radius is cut off from each of the four right-angled sides of the main radiating surface 901. A half-circular arc 903 with the same radius as the arc 902 is cut off from the center of the bottom of the main radiating surface 901 (forming a semi-circular hole). A short T-shaped slit 9031 is cut off at the 30° and 150° directions of the central arc 903. A taller T-shaped slit 9032 is cut off at the 60° and 120° directions of the central arc 903. The slit width of the T-shaped slit 9032 is consistent with the slit width of the T-shaped slit 9031. A taller T-shaped slit 9033 is cut off at the 90° direction of the central arc 903. The slit width of the T-shaped slit 9043 is consistent with the slit width of the T-shaped slit 9032 and the slit width of the T-shaped slit 9031. The chip is connected to two narrow lines 904, i.e., the first arm and the second arm, which are symmetrical about the central axis, and are bonded to the ends with conductive adhesive.

[0077] Figure 9 The slot antenna shown has a rectangular shape with its four corners cut off to form the main radiating surface 901, which can define the operating frequency band and improve the antenna gain. The semi-circular arc surface 903 cut at the bottom center of the main radiating surface 901 adjusts the impedance of the port of the narrow line 904, thereby matching the chip impedance and improving the radiation efficiency of the slot antenna. The five T-shaped slots can widen the operating frequency band of the tag antenna and resist the influence of the packaging contents on the performance of the tag antenna, while optimizing the impedance of the tag antenna port and fine-tuning the operating frequency band.

[0078] The structure of the electronic tag provided in this application embodiment can be as follows: Figure 10 As shown, it includes: a surface protective layer 1001, an etched antenna layer 1002, polyethylene terephthalate (PET) 1003, adhesive 1004, and an insulating layer 1005. The antenna is located on the etched antenna layer 1002, and the chip 1011 connected to the antenna is located on the surface protective layer 1001. The surface protective layer 1001 has a thickness of 50 micrometers, the etched antenna layer 1002 has a thickness of 10 micrometers, the PET 1003 has a thickness of 50 micrometers, the adhesive 1004 has a thickness of 20 micrometers, and the insulating layer 1005 has a thickness of 50 micrometers.

[0079] In the embodiments of this application, Figure 9 The dimensions of each part of the antenna shown can be as follows: Figure 11 As shown, the length and width of the rectangular main radiating surface are 76mm and 35mm respectively, the radius of the 1 / 2 arc surface 903 and the 1 / 4 arc surface 902 is 10.8mm, and the heights of the T-shaped gaps are 1mm, 4mm, 6mm, 4mm and 1mm respectively.

[0080] In practical applications, with the antenna's structural distribution remaining unchanged, the dimensions of each part of the antenna can be determined based on the requirements of the operating frequency band. Figure 11 Based on the dimensions shown, allow for a 20% fluctuation up or down.

[0081] based on Figure 11 When the electronic tag of the antenna shown is placed in the air, i.e., without any substrate or attachment, the return loss and gain are respectively... Figure 12 and Figure 13 As shown. Figure 12 As shown, when the electronic tag provided in this application embodiment is placed in the air, the return loss value in the [860MHz, 1000MHz] frequency band is <-10dB. The size of the tag antenna's operating frequency band is determined by a return loss value <-10dB. Therefore, the electronic tag provided in this application embodiment, when idle, covers the entire application frequency band of Ultra High Frequency (UHF) RFID in the [860MHz, 960MHz] range. Figure 13 As shown, the tag antenna has a gain of about 2.56 dB, which is higher than that of a conventional tag antenna dominated by a dipole, while its directivity is similar to that of a conventional dipole antenna.

[0082] based on Figure 11 When the electronic tag of the antenna shown is placed on the surface of paper packaging containing metal, the return loss and gain are as follows: Figure 14 and Figure 15 As shown. Figure 14 As shown, when the tag provided in this embodiment is placed on the surface of a paper packaging with metal contents, the return loss value in the [860MHz, 1000GHz] frequency band is <-12.5dB. Therefore, the electronic tag provided in this embodiment covers the entire UHF RFID application frequency band [860, 960]MHz when idle. In particular, in the RFID UHF [920, 925]MHz frequency band, the return loss value of the tag antenna is close to -30dB, indicating that in this operating frequency band, the port impedance of the tag antenna is better matched with the chip, and the tag has higher sensitivity. Figure 15 As shown, the tag antenna achieves a gain of 4dB in this state, which is higher than the gain of conventional tag antennas dominated by dipoles, demonstrating good directivity and lobe angle.

[0083] The tag antenna provided in this application has the following beneficial effects:

[0084] 1. The multi-T-shaped slot design not only adjusts the antenna port impedance and increases the degree of freedom in matching with the chip, but also expands the antenna operating frequency band. It can also reduce the influence of the label's attached substrate on the antenna port input impedance, thereby reducing the difficulty of chip impedance conjugate matching.

[0085] 2. The unique antenna profile can effectively adjust the operating frequency and effective bandwidth of the tag chip. When the impedance bandwidth of the tag antenna exceeds 100MHz, it can improve the tag's resistance to the influence of the attached object. This tag is more suitable for paper packaging surfaces with metal contents. The greater gain at this time can effectively improve the tag's reading sensitivity.

[0086] 3. The overall structure of the tag antenna is relatively standardized and easy to manufacture. It does not require high precision in antenna processing, which can effectively reduce the complexity of the processing technology and reduce the antenna manufacturing cost.

[0087] The antenna provided in this application is a novel ultra-high frequency (UHF) dedicated tag antenna. It employs a four-sided chamfered corner and multi-T-shaped slot structure, which reduces impedance abrupt changes caused by complex environments such as various surrounding materials, mitigates the reduction in energy transmission efficiency, and improves tag sensitivity. Electronic tags based on this antenna can reduce impedance abrupt changes caused by complex environments such as various surrounding materials, mitigate the reduction in energy transmission efficiency, and improve tag sensitivity.

[0088] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in some embodiments" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above-described embodiments are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0089] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0090] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0091] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of the embodiments of this application according to actual needs.

[0092] In addition, each functional unit in the various embodiments of this application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0093] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media that can store program code, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0094] Alternatively, if the integrated units described above are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, or the parts that contribute to related technologies, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0095] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An antenna, characterized in that, The antenna includes: Radiation surface; The first side of the radiating surface has a gap, and the gap is located in the middle of the first side; The radiating surface is provided with a semi-circular hole, the edge of which includes a straight edge and an arc. The notch is located on the straight edge of the semi-circular hole and penetrates the first edge of the radiating surface and the straight edge of the semi-circular hole. The straight edge of the semi-circular hole is parallel to the first edge of the radiating surface. There is a first distance between the straight edge of the semi-circular hole and the first edge of the radiating surface. A slit structure is provided on the arc of the semi-circular hole. The slit structure includes at least two slits. The slits are T-shaped slits or deformed structures based on the T-shaped slits.

2. The antenna according to claim 1, characterized in that, The slit structure comprises slits of the same width.

3. The antenna according to claim 1, characterized in that, The length of the side formed by the semi-circular hole and the slit structure is within a preset length range.

4. The antenna according to claim 1, characterized in that, The slit structure includes: a first slit and a second slit symmetrical to the first slit based on a first center line, wherein the first slit and the second slit have the same size, and the first center line is the center line of the semi-circular hole.

5. The antenna according to claim 4, characterized in that, The first gap is located at a 30-degree angle or a 60-degree angle.

6. The antenna according to claim 5, characterized in that, The height of the first gap located at 30 degrees is less than the height of the first gap located at 60 degrees.

7. The antenna according to any one of claims 4 to 6, characterized in that, The gap structure further includes a third gap, which is disposed along the first center line.

8. The antenna according to claim 7, characterized in that, The height of the first gap is less than the height of the third gap.

9. The antenna according to claim 1, characterized in that, The notch is provided with a first arm and a second arm on both sides facing the semi-circular hole. The first arm and the second arm are the same size and are used to connect with the chip.

10. The antenna according to claim 1, characterized in that, The radiating surface includes a first side and a second side perpendicular to the first side. The radiating surface also has at least one third side, with the two ends of the third side connected to the first side and the second side, respectively.

11. The antenna according to claim 10, characterized in that, The third side can be an arc, a straight line, or a sawtooth shape.

12. An electronic tag, characterized in that, The electronic tag includes a chip and an antenna as described in any one of claims 1 to 11, wherein the chip and the antenna are connected.

13. The electronic tag according to claim 12, characterized in that, The electronic tag includes an antenna layer and a protective layer, with the antenna located on the antenna layer and the chip located on the protective layer.

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