Electronic tag with high reverse performance

Abstract

The utility model relates to the technical field of electronic tags, in particular to an electronic tag with high reverse performance, which is characterized in that a near-field module is arranged in the center of a base material, two sides of the near-field module are provided with far-field antennae II which are upside down and symmetrical, and the outer sides of the far-field antennae II are provided with symmetrical far-field antennae I; according to the utility model, under the condition of RFID 900MHz, the wavelength is limited to be half wavelength, so that the optimal state of the performance is ensured, and due to the shape optimization, the use of tag materials is saved, and the cost is reduced. And the balance between performance and material saving is realized. Besides, through a mode of combining the oval far-field antenna and the zigzag far-field antenna, good impedance matching of the oval structure is utilized, radiation intensity is effectively reduced, directivity and gain of the antenna are optimized, efficiency and performance of the antenna are improved on the whole, and reverse performance of the antenna is improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic tag technology, specifically to an electronic tag with high reverse performance. Background Technology

[0002] Electronic laundry tags are mainly used in professional laundry factories and hotel laundry services. They utilize their RFID identification function to check and track the laundry inventory and assist in payment requests.

[0003] However, existing electronic tags do not fully consider their optimal reading performance, resulting in a waste of manufacturing materials, and no further improvements have been made to the tag's reverse performance.

[0004] In view of the above problems, this utility model designs an electronic tag with high reverse performance, forming a tag length with optimal performance, saving tag material, and improving reverse performance. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an electronic tag with high reverse performance, forming a tag length with optimal performance, saving tag material, and improving reverse performance.

[0006] To achieve the above objectives, this utility model provides an electronic tag with high reverse performance, including a substrate, a near-field module disposed in the center of the substrate, and two symmetrical far-field antennas disposed on both sides of the near-field module, with a symmetrical far-field antenna disposed on the outer side of the two far-field antennas. The two far-field antennas are circular or elliptical antennas and are connected to the far-field antennas. The two far-field antennas are coupled to the near-field module.

[0007] The far-field antennas are arranged in a zigzag pattern on the substrate.

[0008] The shape and size of each far-field antenna remain consistent.

[0009] The near-field module includes a near-field antenna and a chip.

[0010] Compared with existing technologies, this invention achieves optimal performance by limiting the wavelength to half the wavelength under RFID 900MHz conditions through a far-field antenna design. The optimized antenna shape also saves on tag material, achieving a balance between performance and material conservation. Furthermore, by combining an elliptical and a herringbone-shaped far-field antenna, the good impedance matching of the elliptical structure effectively reduces radiation intensity, optimizes antenna directivity and gain, and thus improves overall antenna efficiency and performance, thereby enhancing its reverse performance. Attached Figure Description

[0011] Figure 1 It is a schematic view of the utility model.

[0012] Figure 2 It is a schematic view of the mirror image symmetry design in the utility model experimental comparison.

[0013] Figure 3 It is a schematic view of the mirror image symmetry design in the utility model experimental comparison.

[0014] Figure 4 It is a schematic view of the mirror image symmetry design in the utility model experimental comparison.

[0015] 1 is the base material, 2 is the far-field antenna one, 3 is the far-field antenna two, and 4 is the near-field module. DETAILED DESCRIPTION

[0016] The utility model will be further described with reference to the drawings.

[0017] Referring to Figure 1 The utility model provides a kind of electronic tag of high reverse performance, including base material 1, the central part of base material 1 is provided with near-field module 4, the two sides of near-field module 4 are provided with upside-down symmetrical far-field antenna two 3, the outside of far-field antenna two 3 is provided with symmetrical far-field antenna one 2, far-field antenna two 3 is circular or oval antenna and is communicated with far-field antenna one 2, far-field antenna two 3 is coupled with near-field module 4.

[0018] Far-field antenna one 2 zigzag arrangement on base material 1.

[0019] The shape and size of each far-field antenna two 3 are consistent.

[0020] Near-field module 4 includes near-field antenna and chip.

[0021] Working principle:

[0022] The utility model is not needed when using too much debugging, far-field antenna one 2 and far-field antenna two 3 are used to receive the radio frequency signal sent by reader-writer, and convert it into electric energy.The chip included in near-field module 4 stores the unique identification code and other information of label, processes signal and carries out data transmission.

[0023] In use, the RFID reader emits radio frequency signals (electromagnetic waves) that propagate through the air. The RFID tag's far-field antennas 2 and 3 receive these signals, converting them into electrical energy to power the tag's chip. Once the chip receives sufficient power, it is activated and ready to transmit data. The activated tag then sends the information stored in its chip (such as a unique identifier) ​​back to the reader by modulating the reflected signal. The tag achieves this by altering the reflected signal (e.g., modulating its amplitude or phase). The RFID reader receives the returned signal and decodes it to extract the tag information.

[0024] This invention conducted a comparative experiment on the far-field antennas 3 on both sides of the near-field module 4, comparing mirror symmetry and upside-down mirror symmetry. Figure 2 The image shown is a mirror-symmetric design (contrast design), based on Figure 3 and Figure 4 The experimental results show that the antenna of this invention ( Figure 4 The design, at the same wavelength, showed a significant improvement in its US frequency performance. This demonstrates that performance improvements can be achieved through antenna design without increasing antenna length, thus striking a balance between cost and effectiveness. Its specific background and value are mainly reflected in:

[0025] In wireless communication, the length of an antenna is typically related to the wavelength of the signal. A half-wavelength antenna, however, is approximately half the length of the signal wavelength. This design allows the antenna to achieve optimal radiation efficiency and gain when receiving and transmitting signals. Therefore, for RFID tags, using a half-wavelength antenna can improve tag performance and enhance signal transmission distance and reliability.

[0026] In RFID tag design, using half-wavelength antennas can save materials to some extent. Since the antenna length directly affects the amount of conductor material required, designing a half-wavelength antenna allows for reduced material usage while maintaining good performance, which is crucial for mass production and cost reduction.

[0027] RFID tags typically need to be miniaturized to suit different application scenarios. Therefore, by optimizing the antenna design (e.g., using a half-wavelength antenna), the size of the tag can be reduced without sacrificing performance, thereby saving materials and space.

[0028] In addition, material cost is an important consideration in the production of RFID tags. By designing efficient antenna structures, manufacturers can reduce the amount of materials required, thereby reducing overall production costs, which is especially important for large-scale applications such as logistics and supply chain management.

[0029] In summary, the RFID tag can improve performance when designed with a half-wavelength antenna, while reducing costs and miniaturization through optimized material usage. This design concept plays an important role in the wide application of RFID technology.

[0030] The above is only the preferred embodiment of the present application, and is only used to help understand the method and its core idea of the present application. The protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application can also be considered as the protection scope of the present application.

[0031] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] The present application solves the defects that the balance between the use of label material and performance and the insufficient reverse performance are not fully considered in the prior art. By designing the far-field antenna in this way, the wavelength is limited to half wavelength under the condition of RFID 900MHz, thereby ensuring the optimal state of its performance. Also, due to the optimization of the shape of the antenna, the use of label material is saved, and the balance between performance and material saving is achieved. In addition, by combining the elliptical and zigzag far-field antennas, the impedance matching of the elliptical structure is utilized, the radiation intensity is effectively reduced, the directivity and gain of the antenna are optimized, and the efficiency and performance of the antenna are improved as a whole, thereby improving the reverse performance.

Claims

1. An electronic tag with high reverse performance comprising a substrate (1), characterized in that, The central part of the substrate (1) is provided with a near field module (4), both sides of the near field module (4) are provided with upside-down symmetric far field antenna two (3), the outer side of the far field antenna two (3) is provided with symmetric far field antenna one (2), the far field antenna two (3) is circular or elliptical antenna and communicates with the far field antenna one (2), the far field antenna two (3) is coupled with the near field module (4).

2. The electronic tag of high reverse performance according to claim 1, characterized in that, The far field antenna one (2) is zigzag arranged on the substrate (1).

3. The electronic tag of claim 1, wherein, The shape and size of each far field antenna two (3) are consistent.

4. The electronic tag of claim 1, wherein, The near field module (4) comprises a near field antenna and a chip.

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