Single-antenna double-chip ultrahigh frequency tag

Abstract

The utility model discloses a single-antenna double-chip ultrahigh frequency tag, which belongs to the technical field of electronic tags and comprises a base layer, an adhesive layer, a PET (polyethylene terephthalate) film and release paper. The base layer is provided with a gain antenna, the gain antenna is in an I shape, two notches in the middle of the gain antenna are respectively provided with a coupling antenna, one side of each coupling antenna is provided with an RFID chip, the two coupling antennas are respectively connected with the two RFID chips and the gain antenna, and the two RFID chips are connected. The upper side and the lower side of the RFID chip are provided with ultraviolet shielding films. The adhesive layer comprises a first adhesive layer and a second adhesive layer, the first adhesive layer is connected with the upper surface of the base layer, and the second adhesive layer is connected with the lower surface of the base layer. And the PET film is connected with the upper surface of the first adhesive layer. The release paper is connected with the lower surface of the second adhesive layer. According to the utility model, the problem that the existing ultrahigh-frequency tag is not suitable for application occasions for reading redundancy due to no backup chip is solved, and the antenna signal intensity of the tag is high, so that data can be normally read under complex conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic tag technical field, especially in single antenna double chip ultra high frequency label. BACKGROUND

[0002] Ultra high frequency (UHF) label is a kind of radio frequency identification (RFID) label, its working frequency range is generally between 860-960MHz, this frequency range makes that ultra high frequency label has farther reading distance and higher data transmission rate.Ultra high frequency label is mainly composed of chip and antenna, when label enters the working area of reader-writer, the ultra high frequency electromagnetic wave of the transmission of reader-writer is received by the antenna of label, antenna converts the electromagnetic wave received into electric energy, and chip provides working power, after obtaining energy, chip will transmit or receive data according to the instruction of reader-writer.For example, reader-writer issues the instruction of reading data, and chip will reflect the data (such as product number, production date etc.) stored in its internal memory back to reader-writer through antenna, and completes data reading process.But, the existing ultra high frequency label is generally single chip, without backup chip, not suitable for reading redundant application occasions.In addition, the existing ultra high frequency label, based on cost, size limit, application scene applicability etc., generally does not set gain antenna, resulting in that antenna signal strength is not high under complex conditions, and data reading is affected.Therefore, it is necessary to improve the prior art. SUMMARY

[0003] The utility model provides a kind of single antenna double chip ultra high frequency label, by setting double chip, to solve the existing ultra high frequency label because of no backup chip and not suitable for reading redundant application occasions.By setting gain antenna and two coupling antennas cooperate, improve antenna signal strength, ensure that data can be normally read under complex conditions.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0005] Single antenna double chip ultra high frequency label, comprising:

[0006] Base layer, gain antenna is arranged on the base layer, the gain antenna is in the shape of I, two notches in the middle are provided with one coupling antenna respectively, one RFID chip is arranged on the side of two coupling antennas respectively, two coupling antennas are connected with two RFID chips respectively, and are connected with the gain antenna, and two RFID chips are connected;Ultraviolet shielding film is arranged on the upper side and the lower side of the RFID chip;

[0007] Adhesive layer, including first adhesive layer and second adhesive layer symmetrically arranged, the first adhesive layer is connected with the upper surface of base layer, and the second adhesive layer is connected with the lower surface of base layer;

[0008] A PET film is connected to the upper surface of the first adhesive layer.

[0009] Further, a release paper is connected to the lower surface of the second adhesive layer.

[0010] Further, the material of the base layer is PET.

[0011] Further, the base layer is rectangular, and the length is 80-100mm.

[0012] Further, the width of the base layer is 40-50mm.

[0013] Further, the length of the gain antenna is 70-90mm.

[0014] Further, the width of the gain antenna is 30-45mm.

[0015] Further, the thickness of the PET film is 40-60μm.

[0016] Due to the adoption of the above technical solutions, the utility model has the following beneficial effects:

[0017] 1. The utility model adopts a single label double-chip scheme, and two RFID chips are arranged in one label under the premise of ensuring reading performance. In an application occasion requiring reading redundancy (requiring a backup chip), only one label is required to meet the requirements, nearly 50% of production materials are saved, and production efficiency is improved.

[0018] 2. The utility model cooperates the gain antenna with the two coupling antennas, improves the antenna signal strength, and ensures that data can be normally read under complex conditions. The gain antenna is in the shape of an H, and the two coupling antennas are arranged at the two notches in the middle. This layout can optimize the coupling effect between the antennas, the coupling antennas can more effectively capture radio frequency signals and transmit them to the gain antenna, and high-efficiency energy transmission is realized. Because the distance between the coupling antennas and the gain antenna is very close, the signal loss is effectively reduced in the process of signal transmission from the coupling antennas to the gain antenna. The symmetrical layout of the two coupling antennas at the notches of the gain antenna can reduce electromagnetic interference to a certain extent. In addition, this layout can make the structure of the entire label more compact, and provides better space conditions for the integration of double chips. The double chips can be more conveniently combined with the antenna layout. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 The layer structure diagram of the single-antenna double-chip UHF label provided by the utility model is shown in the figure.

[0020] Fig. 2This is a schematic diagram of the antenna arrangement of the single-antenna dual-chip UHF tag proposed in this utility model;

[0021] Among them, the markings in the attached figure are: 1-base layer, 2-RFID chip, 3-ultraviolet shielding film, 4-glue layer, 5-PET film, 6-release paper, 7-gain antenna, 8-coupling antenna. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] like Figs. 1-2 As shown, the single-antenna dual-chip UHF tag includes a base layer 1, an adhesive layer 4, a PET film 5 and a release paper 6.

[0025] A booster antenna 7 is installed on the base layer 1. The booster antenna 7 is in an I-shape, with two coupling antennas 8 located in the middle. An RFID chip 2 is installed on each side of the two coupling antennas 8. The two coupling antennas 8 are connected to the two RFID chips 2, the booster antenna 7, and the two RFID chips 2. UV-blocking film 3 is installed on both the top and bottom sides of the RFID chips 2.

[0026] The gain antenna 7 is in an I-shape, with a coupling antenna 8 provided at each of the two notches in the middle. This layout can optimize the coupling effect between the antennas. The coupling antenna 8 can more effectively capture the radio frequency signal and transmit it to the gain antenna 7, thereby achieving efficient energy transmission.

[0027] Since the distance between the coupling antenna 8 and the booster antenna 7 is very short, the signal loss is effectively reduced during the process of signal transmission from the coupling antenna 8 to the booster antenna 7 .

[0028] The structure in which the booster antenna 7 is in an I-shape and the coupling antenna 8 is located at the notch helps to optimize the radiation pattern of the tag. The symmetrical layout of the two coupling antennas 8 at the notch of the booster antenna 7 can reduce electromagnetic interference to a certain extent.

[0029] In addition, adopting this layout can make the structure of the entire tag more compact, providing better space conditions for the integration of dual chips, and the dual chips can be more conveniently combined with the antenna layout.

[0030] The material of the base layer 1 is PET. The base layer 1 is rectangular, with a length of 80-100 mm and a width of 40-50 mm. The gain antenna 7 has a length of 70-90 mm and a width of 30-45 mm. In this embodiment, the length of the base layer 1 is 90 mm, and the width is 45 mm. The length of the gain antenna 7 is 82 mm, and the width is 38 mm.

[0031] The adhesive layer 4 comprises a first adhesive layer and a second adhesive layer arranged symmetrically. The first adhesive layer is connected to the upper surface of the base layer 1, and the second adhesive layer is connected to the lower surface of the base layer 1. The PET film 5 is connected to the upper surface of the first adhesive layer, and the thickness of the PET film 5 is 40-60 μm. In this embodiment, the thickness of the PET film 5 is 50 μm. The release paper 6 is connected to the lower surface of the second adhesive layer.

[0032] The utility model discloses a single label double-chip scheme, which sets two RFID chips 2 in one label under the premise of ensuring reading performance. In the application scenario requiring reading redundancy (requiring a backup chip), only one label can meet the requirements, saving nearly 50% of production materials and improving production efficiency.

[0033] In the context of ultra-high frequency label reading, reading redundancy refers to the case of multiple readings of the same label during the reading process. This is to ensure the accuracy and integrity of the data, and to avoid data loss or inaccuracy caused by factors such as signal interference, reading distance changes, and temporary unreadable labels. For example, in a logistics warehouse, when checking the ultra-high frequency label on the goods, the reader may read the same label multiple times at different time points and locations to ensure that the correct goods information is obtained.

[0034] The utility model discloses a gain antenna 7 and two coupling antennas 8 are matched to improve the antenna signal strength and ensure that the data can be normally read under complex conditions.

[0035] The above description is a detailed description of the preferred and feasible embodiment of the utility model, but the embodiment is not used to limit the patent application range of the utility model. Any equivalent changes or modifications completed under the technical spirit of the utility model should belong to the patent range covered by the utility model.

Claims

1. Single antenna dual chip UHF tag, characterized by: include: A base layer, wherein a gain antenna is provided on the base layer, and the gain antenna is in an I-shape, wherein two notches in the middle are respectively provided with a coupling antenna, and an RFID chip is respectively provided on one side of the two coupling antennas, and the two coupling antennas are respectively connected to the two RFID chips, and are also connected to the gain antenna, and the two RFID chips are connected; and ultraviolet shielding films are provided on the upper and lower sides of the RFID chip; The adhesive layer includes a first adhesive layer and a second adhesive layer symmetrically arranged above and below, wherein the first adhesive layer is connected to the upper surface of the base layer, and the second adhesive layer is connected to the lower surface of the base layer; The PET film is connected to the upper surface of the first adhesive layer.

2. The single-antenna dual-chip UHF tag according to claim 1, characterized in that: It also includes release paper, which is connected to the lower surface of the second adhesive layer.

3. The single-antenna dual-chip UHF tag according to claim 1, characterized in that: The material of the base layer is PET.

4. The single-antenna dual-chip UHF tag according to claim 1, characterized in that: The base layer is rectangular and has a length of 80-100 mm.

5. The single-antenna dual-chip UHF tag according to claim 4, characterized in that: The width of the base layer is 40-50 mm.

6. The single-antenna dual-chip UHF tag according to claim 5, characterized in that: The length of the booster antenna is 70-90 mm.

7. The single-antenna dual-chip UHF tag according to claim 6, characterized in that: The width of the booster antenna is 30-45 mm.

8. The single-antenna dual-chip UHF tag according to claim 1, characterized in that: The thickness of the PET film is 40-60 μm.

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