Flexible lighting tag antenna

Abstract

The utility model discloses a flexible lighting tag antenna, which comprises an antenna body, the antenna body adopts an aluminum etching process to form an antenna radiation part and a tuning branch knot on the front side of a base material, the bottom of the radiation part is provided with an installation groove with the front side and the rear side being open, the tuning branch knot is arranged in the installation groove, and a lighting integration part is arranged in the tuning branch knot. The inner wall of the top of the installation groove is provided with a bonding part used for connecting the light-emitting integration part and the radiation part together. According to the utility model, the overall impedance of the radiation part can be adjusted through the tuning branch knot, so that the impedance of the antenna body is adjusted, the resonant frequency of the antenna body is ensured to be stably kept in a specific range, and the use stability of the tag in a metal environment is improved; when the label works, a worker can be reminded in a light-on mode, visual feedback of the working state is achieved, and the worker can conveniently and obviously find the working state during working.

Description

Technical Field

[0001] This utility model relates to the field of illuminated tag antenna technology, and in particular to a flexible illuminated tag antenna. Background Technology

[0002] Tag antennas are an important component of RFID (Radio Frequency Identification) systems. They are mainly used to transmit and receive radio frequency signals to achieve wireless identification and data exchange. Tag antennas are usually combined with RFID chips to form a complete RFID electronic tag transponder.

[0003] The existing tag antennas have the following shortcomings during use: (1) their resonant frequency is not adjustable, resulting in low stability of the tag in a metal environment; (2) the tag antenna has low visibility in the working state, and personnel cannot easily spot it during operation; In view of the above, this application proposes a flexible illuminated tag antenna. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a flexible illuminated tag antenna.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flexible illuminated tag antenna includes an antenna body. The antenna body is formed on the front side of a substrate using an aluminum etching process to form an antenna radiating part and a tuning stub. The bottom of the radiating part is provided with a mounting groove with openings on both the front and back sides. The tuning stub is located in the mounting groove and has a light-emitting integrated part inside it. A bonding part for connecting the light-emitting integrated part and the radiating part is installed on the top inner wall of the mounting groove.

[0007] Preferably, the radiating part is a dipole antenna structure formed by etching process, the material is conductive silver paste, the bonding part is bonded with a light-up tag chip by conductive adhesive hot pressing process, and the radiating part is connected to the light-up tag chip by conductive adhesive bonding process.

[0008] Preferably, the tuning stub has a loop-shaped structure, and the tuning stub is used to adjust the overall impedance of the radiating section.

[0009] Preferably, the light-emitting integrated portion is controlled by a light-up tag chip on the bonding portion.

[0010] Preferably, the light-emitting integrated unit includes an antenna feed point extension circuit and a micro LED chip. The antenna feed point extension circuit is electrically connected to the light-up label chip. The antenna feed point extension circuit is connected in parallel with the micro LED chip through a conductive adhesive bonding process. The bonding part is used to supply energy to the micro LED chip and control its lighting logic.

[0011] Preferably, the antenna body is made of flexible material, and its upper part is covered with a flexible encapsulation layer PET. An external reader / writer is matched to the antenna body.

[0012] Compared with existing technologies, the beneficial effects of this utility model are:

[0013] 1. By adjusting the length and width of the tuning stubs, the overall impedance of the radiating section can be adjusted, thereby regulating the impedance of the antenna body to ensure that the resonant frequency of the antenna body remains stably within a specific range.

[0014] 2. By setting the light-emitting integrated part, controlling the light-up tag chip on the bonding part, triggering the current sensed by the antenna body, and controlling the light-up logic through the threshold voltage, the visual feedback of the tag's working status is realized.

[0015] This invention can adjust the overall impedance of the radiating part by tuning the stub, thereby adjusting the impedance of the antenna body to ensure that the resonant frequency of the antenna body is stably maintained within a specific range, improving the stability of the tag in a metallic environment. In addition, the setting of the light-emitting integrated part can remind personnel by lighting up the tag when it is working, achieving visual feedback on the working status, making it easy for personnel to notice during operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a flexible illuminated tag antenna proposed in this utility model.

[0017] In the diagram: 10. Antenna body; 11. Radiating part; 1101. Mounting slot; 12. Tuning stub; 13. Bonding part; 14. Light-emitting integrated part. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1A flexible illuminated tag antenna includes an antenna body 10, which is made of flexible material and covered with a flexible encapsulation layer PET to ensure optical transmission and mechanical strength. The back can be coated with adhesive for composite encapsulation according to specific application scenarios. An external reader is matched to the antenna body 10. The antenna body 10 uses an aluminum etching process to form an antenna radiating part 11 and a tuning stub 12 on the front of the substrate. The radiating part 11 is a dipole antenna structure formed by etching process, and the material is conductive silver paste. The structure of the radiating part 11 is adjustable. By adjusting its structure (such as length, width, and shape), it can achieve matching with a specific UHF frequency band. The Chinese frequency band is 920MHz-925MHz. The tuning stub 12 is a loop structure. The tuning stub 12 is used to adjust the overall impedance of the radiating part 11. Its structure is adjustable. By adjusting the length and width of the stub, the real and imaginary parts of the impedance of the antenna body 10 can be adjusted to achieve conjugate matching with the impedance of the tag chip, thereby optimizing the resonant frequency of the antenna body in a metal environment.

[0020] The bottom of the radiating part 11 is provided with a mounting groove 1101 with openings on both the front and back sides. The tuning branch 12 is located in the mounting groove 1101. The tuning branch 12 is provided with a light-emitting integrated part 14. A bonding part 13 for connecting the light-emitting integrated part 14 and the radiating part 11 is installed on the top inner wall of the mounting groove 1101. A light-emitting label chip is bonded to the bonding part 13 by a conductive adhesive hot-press bonding process. The radiating part 11 is connected to the light-emitting label chip by a conductive adhesive bonding process. The light-emitting integrated part 14 is controlled by the light-emitting label chip on the bonding part 13.

[0021] The light-emitting integrated unit 14 includes an antenna feed point extension circuit and a micro LED chip. The antenna feed point extension circuit is electrically connected to the illuminated tag chip. The antenna feed point extension circuit is connected in parallel with the micro LED chip through a conductive adhesive bonding process. The bonding part 13 is used to supply energy to the micro LED chip and control its lighting logic. This utility model can adjust the overall impedance of the radiating part 11 through the tuning branch 12, thereby adjusting the impedance of the antenna body 10 to ensure that the resonant frequency of the antenna body 10 is stably maintained within a specific range, improving the stability of the tag in a metal environment. Furthermore, the setting of the light-emitting integrated unit 14 can remind personnel by lighting up when the tag is working, achieving visual feedback on the working status, making it easy for personnel to notice during work.

[0022] Working principle: During the fabrication of the antenna body 10, an aluminum etching process is used to form the antenna radiating part 11 and the tuning stub 12 on the front side of the substrate. The length, width and shape of the radiating part 11 are adjusted to match a specific UHF frequency band (such as the Chinese frequency band 920MHz-925MHz). At the same time, the length and width of the tuning stub 12 are adjusted to adjust the real and imaginary parts of the impedance of the antenna body 10, so that it achieves conjugate matching with the impedance of the tag chip. This optimizes the resonant frequency of the antenna body 10 in a metallic environment, ensuring that the resonant frequency of the antenna body 10 is stably maintained within a specific range, and improving the stability of the tag in a metallic environment.

[0023] Next, a light-emitting tag chip is bonded to the bonding part 13 using a conductive adhesive hot-press bonding process. Then, the radiating part 11 is connected to the light-emitting tag chip on the bonding part 13 using a conductive adhesive bonding process. The matching parameters are optimized through testing in an anechoic chamber shielding box. Next, the micro LED chip is connected in parallel with the antenna feed point extension circuit using a conductive adhesive bonding process to form the light-emitting integrated part 14. Then, a PET protective layer is applied to the entire antenna body 10 to ensure optical transmission and mechanical strength. The back side can be coated with adhesive for composite encapsulation according to the specific application scenario. The fabrication is now complete.

[0024] The entire antenna body 10 is attached to the surface of the object with adhesive. It is powered by the energy provided by the electromagnetic induction of the reader. When the reader transmits a radio frequency signal, the antenna body 10 is activated by electromagnetic induction, and the light-emitting integrated part 14 lights up according to the preset logic, realizing the visual feedback of the tag's working status, which is convenient for personnel to notice during operation. At the same time, after the antenna body 10 is activated after receiving the radio frequency signal, it transmits the stored ID information or data back to the reader. The reader software presets the light flashing frequency to intuitively judge the tag's working status.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flexible illuminated tag antenna, comprising an antenna body (10), characterized in that, The antenna body (10) is formed on the front side of the substrate by aluminum etching process, forming an antenna radiating part (11) and a tuning stub (12). The bottom of the radiating part (11) is provided with a mounting groove (1101) with openings on both the front and back sides. The tuning stub (12) is located in the mounting groove (1101). The tuning stub (12) is provided with a light-emitting integrated part (14). A bonding part (13) for connecting the light-emitting integrated part (14) and the radiating part (11) is installed on the top inner wall of the mounting groove (1101).

2. The flexible illuminated tag antenna according to claim 1, characterized in that, The radiating part (11) is a dipole antenna structure formed by etching process, and the material is conductive silver paste. The bonding part (13) is bonded with a light-up tag chip by conductive adhesive hot pressing process. The radiating part (11) is connected to the light-up tag chip by conductive adhesive bonding process.

3. The flexible illuminated tag antenna according to claim 1, characterized in that, The tuning stub (12) is a loop-shaped structure and is used to adjust the overall impedance of the radiating section (11).

4. A flexible illuminated tag antenna according to claim 2, characterized in that, The light-emitting integrated unit (14) is controlled by the light-emitting tag chip on the bonding unit (13).

5. A flexible illuminated tag antenna according to claim 2, characterized in that, The light-emitting integrated unit (14) includes an antenna feed point extension circuit and a micro LED chip. The antenna feed point extension circuit is electrically connected to the light-up label chip. The antenna feed point extension circuit is connected in parallel with the micro LED chip through a conductive adhesive bonding process. The bonding part (13) is used to deliver energy to the micro LED chip and control its lighting logic.

6. A flexible illuminated tag antenna according to claim 1, characterized in that, The antenna body (10) is made of flexible material and is covered with a flexible encapsulation layer PET. An external reader / writer is matched to the antenna body (10).

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