A patch group reading application RFID tag

Abstract

The utility model relates to an RFID tag of patch type group reading application relates to RFID tag technical field. Including antenna and chip, the chip is connected above antenna through conductive glue, the antenna is in sheet shape, the antenna is in strip shape, one side long arm department of antenna is equipped with binding area, and the binding area is used for connecting chip, the inboard of binding area on antenna is equipped with loop loop area, and the outside of loop loop area on antenna forms radiation area. The both ends short arm department of antenna is equipped with symmetrical notched. The notched is semicircular, rectangular or trapezoidal. The loop loop area is regular annular or irregular annular, wherein, regular annular is circular, oval or rectangular, and irregular annular is the polygon of unequal sides. The utility model in work, the chip end is designed to be located at the long arm of the antenna, and the radiation area is designed as a slotted patch structure, which can realize the anti-interference ability of the tag, meet the group reading demand, and adapt to the latest multi-tag group reading application demand.

Description

Technical Field

[0001] This utility model relates to the field of RFID tag technology, and in particular to an RFID tag for patch-type group reading applications. Background Technology

[0002] RFID (Radio Frequency Identification) is a contactless automatic identification technology that achieves energy transfer and data exchange through spatial coupling of radio frequency signals, enabling target identification without human intervention. Its system mainly consists of three parts: electronic tags, a reader, and an antenna. The electronic tags store the target's unique identifier (such as an EPC code) and can be classified as passive, active, or semi-active based on their power supply method. The reader is responsible for emitting radio frequency signals to activate the tag and read / write data. The antenna transmits signals between the two, and the coupling method varies depending on the frequency, including inductive coupling (near field) and electromagnetic backscatter coupling (far field). With its contactless, high-efficiency, and environmentally adaptable characteristics, RFID has been widely used in logistics, retail, healthcare, and many other fields.

[0003] The basic working principle of RFID technology is not complicated: after the tag enters the magnetic field, it receives the radio frequency signal emitted by the RFID reader and sends out the product information stored in the chip (PassiveTag) by using the energy obtained by the induced current, or actively sends a signal of a certain frequency (ActiveTag); after the reader reads and decodes the information, it sends it to the central information system for relevant data processing.

[0004] With the deepening application of the Internet of Things (IoT), conventional RFID tags have gradually exposed multiple weaknesses, especially in meeting industry demands in mass reading scenarios. Conventional tags rely on the traditional ALOHA anti-collision protocol, resulting in a time slot utilization rate of only about 30%, with a significant amount of time wasted in idle slots. When the number of tags exceeds 100, the probability of signal collisions increases sharply, with a missed reading rate reaching 40%-60%, making it unsuitable for high-density scenarios. In batch processing scenarios such as clothing warehouse inventory and express delivery sorting, this inefficient mass reading directly leads to extended operation time; for example, traditional tags require 15 minutes to scan 500 items, far below industry efficiency requirements. Furthermore, environments such as metal shelves and liquid packaging severely attenuate radio frequency signals; the read rate of ordinary tags on metal surfaces can drop below 50%, and identification is even more difficult in scenarios such as medical liquid bottles. Currently, the demand for RFID mass reading is increasingly urgent across various industries: the logistics sector needs to achieve batch identification in container yards; the retail industry requires inventory checks of thousands of items within seconds. Therefore, the development of patch-type mass reading RFID tags is imperative. Utility Model Content

[0005] To address the above problems, this utility model provides a patch-type RFID tag for group reading applications that is simple in structure, easy to process, and improves the reliability of group reading.

[0006] The technical solution of this utility model is: an RFID tag for patch-type group reading application, including an antenna and a chip, wherein the chip is connected above the antenna by conductive adhesive; The antenna is in the shape of a sheet or a strip, and a bonding area is provided on one long arm of the antenna for connecting the chip. The antenna has a loop area inside the bonding area, and a radiation area is formed outside the loop area.

[0007] The antenna has symmetrical slots at both ends of its short arms.

[0008] The slot is semi-circular, rectangular, or trapezoidal.

[0009] The loop area is either a regular ring or an irregular ring; the regular ring is a circle, ellipse or rectangle; the irregular ring is a polygon of varying lengths.

[0010] The loop section has a line width of 0.2–10 mm and a length of 0.2–50 mm.

[0011] The antenna has a length of 5–100 mm, a height of 5–100 mm, and a linewidth of 0.2–20 mm.

[0012] In operation, this invention places the chip at the long arm of the antenna and uses a slotted patch structure for the radiation area. This design enables the tag to resist interference and meets the requirements of group reading, thus adapting to the latest multi-tag group reading applications. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In the drawings, the parts are not necessarily drawn to scale.

[0014] Figure 1 This is a structural schematic diagram of Embodiment 1 of this utility model. Figure 2 This is a structural schematic diagram of Embodiment 2 of this utility model; In the diagram, 1 is the antenna, 2 is the bonding area, 3 is the loop area, 4 is the radiation area, and 5 is the slot. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0016] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] This utility model is as follows Figure 1-2 As shown, an RFID tag for patch-type group reading application includes an antenna 1 and a chip, wherein the chip is connected above the antenna by conductive adhesive; The antenna 1 is sheet-shaped, the antenna is long strip-shaped, and a bonding area 2 is provided on one long arm of the antenna. The bonding area is used to connect the chip. The antenna has a loop area 3 located inside the bonding area, and a radiation area 4 is formed outside the loop area.

[0019] In operation, this invention positions the bonding area on the long arm of the antenna side. This edge-mounted design improves tag coupling and signal transmission, reducing interference from attached objects on the tag's electromagnetic signals. This invention also allows for smaller tag sizes and shape variations, expanding the tag's application range.

[0020] The antenna has symmetrical slots 5 at both ends of its short arms. The radiation area adopts a patch structure design with slots on both sides, which can increase the tag's resistance to dielectrics. At the same time, the innovative use of a slotted structure on both sides can realize the collection and transmission of tag current signals in multi-tag applications, better realize signal communication, and reduce the impact of group reading environment on its performance.

[0021] The slot 5 can be semi-circular, rectangular, or trapezoidal. The appropriate slot can be selected based on the actual usage.

[0022] The loop area 3 is either a regular ring or an irregular ring; the regular ring is a circle, ellipse or rectangle; the irregular ring is a polygon of varying lengths, all of which can realize tag frequency adjustment and performance optimization.

[0023] The loop section has a line width of 0.2–10 mm and a length of 0.2–50 mm.

[0024] This ensures that the loop area can complete the corresponding impedance adjustment, achieve conjugate matching with different chips, achieve the best performance of the loop antenna, and broaden the range of chips that the tag can be paired with.

[0025] The antenna has a length of 5–100 mm, a height of 5–100 mm, and a linewidth of 0.2–20 mm.

[0026] This invention features anti-interference group reading capabilities, is easy to match with chips of different impedances, is suitable for various application environments, and facilitates application expansion.

[0027] This label contains a loop area and a radiation area. Performance can be adjusted directly through the size and linear shape of the loop area, making it highly design-operable.

[0028] The appearance of the antenna loop area can be regular or irregular, and by adopting different line widths and line shapes, the antenna impedance can be adjusted to match the chip, thus exhibiting strong chip applicability.

[0029] The chip is located on the long arm of the antenna and uses an edge-mounted design to improve communication performance.

[0030] By using a slotted patch design in the radiation area, it is possible to collect and transmit tag current signals in multi-tag applications, and it has a strong anti-interference capability.

[0031] This invention exhibits superior group reading performance in multi-tag application environments, has wide applicability, improves economic efficiency, and is highly practical.

[0032] Regarding the information disclosed in this case, the following points need to be clarified: (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design. (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments; The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. An RFID tag for patch-type group reading applications, comprising an antenna and a chip, wherein the chip is connected above the antenna via conductive adhesive; characterized in that, The antenna is in the shape of a sheet or a strip, and a bonding area is provided on one long arm of the antenna for connecting the chip. The antenna has a loop area inside the bonding area, and a radiation area is formed outside the loop area on the antenna. The antenna has slots at both ends of its short arms.

2. The RFID tag for patch-type group reading application according to claim 1, characterized in that, The slots at both ends are symmetrically arranged.

3. The RFID tag for patch-type group reading application according to claim 1, characterized in that, The slot is semi-circular, rectangular, or trapezoidal.

4. The RFID tag for patch-type group reading application according to claim 1, characterized in that, The loop area is either a regular ring or an irregular ring; the regular ring is a circle, ellipse or rectangle; the irregular ring is a polygon of varying lengths.

5. The RFID tag for patch-type group reading application according to claim 1, characterized in that, The loop section has a line width of 0.2–10 mm and a length of 0.2–50 mm.

6. The RFID tag for patch-type group reading application according to claim 1, characterized in that, The antenna has a length of 5–100 mm, a height of 5–100 mm, and a linewidth of 0.2–20 mm.

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