Flexible anti-metal lighting tag antenna

Abstract

The utility model discloses a flexible anti-metal lighting tag antenna, which comprises a radiation part, a short circuit part and a grounding part, and is characterized in that the rear side of the radiation part is fixedly bonded with a flexible base material layer; the radiation part comprises a radiation area, a tuning branch knot and a light-emitting integration part. According to the utility model, integrated processing is carried out by adopting an aluminum etching process, so that the processing length and width of the tuning branch knot can be conveniently adjusted according to frequency band requirements of different regions, the real part and imaginary part of the impedance of the antenna can be adjusted, and the real part and imaginary part of the impedance of the antenna can be in conjugate matching with the impedance of a tag chip; in the aluminum etching process, the center frequency of the tag can be adjusted by adjusting the folded processing position of the short circuit part, so that the tag can be conveniently suitable for the local RFID frequency band requirement, and in addition, in the application, the visualization of the tag antenna in the working state is realized according to a preset logic lighting mode when the tag antenna is activated by electromagnetic induction; and people can conveniently and intuitively find the information.

Description

TECHNICAL FIELD

[0001] The utility model relates to label antenna technical field, concretely is a kind of flexible anti-metal bright light label antenna. BACKGROUND

[0002] Label antenna is the important component in RFID (Radio Frequency Identification) system, mainly for transmitting and receiving radio frequency signal, realizes wireless identification and data exchange, label antenna is usually together with RFID chip and constitutes complete RFID electronic label transponder;

[0003] Label antenna in prior art has the following deficiencies in use process: (1), central frequency is not adjustable, RFID frequency band exists difference in different countries and regions, it is difficult to adapt to local RFID frequency band requirement;(2) the visual degree of label antenna under working condition is low, it is difficult to provide personnel to find out;Comprehensive above situation, a kind of flexible anti-metal bright light label antenna is proposed in the present application. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of flexible anti-metal bright light label antenna to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of flexible anti-metal bright light label antenna, including radiating part, short-circuit part and ground part, the radiating part rear side is adhesively fixed with flexible base material layer;

[0006] The radiating part includes radiation zone, tuning branch and light-emitting integrated part, the radiating part, short-circuit part and ground part are integrally formed from left to right, and the short-circuit part is used to fold radiating part and ground part.

[0007] Preferably, the flexible base material layer uses low dielectric constant, bend-resistant foam material as substrate, and the thickness of the flexible base material layer is 0.8mm.

[0008] Preferably, the flexible base material layer is used to be flexible in the middle after radiating part and ground part fold, for effectively suppressing the effect of metal surface electromagnetic interference.

[0009] Preferably, the radiating part is dipole antenna structure formed on base material using aluminum etching process, and the materials of radiation zone, tuning branch and light-emitting integrated part are all conductive silver paste, for realizing the matching of its specific UHF frequency band, such as Chinese frequency band 920MHz-925MHz.

[0010] Preferably, the tuning branch is a T-shaped tuning branch, and the length and width of the tuning branch are adjusted to adjust the real part and imaginary part of the antenna impedance, so that the impedance of the tuning branch is conjugately matched with the impedance of the tag chip, and the resonant frequency of the antenna in the metal environment is optimized.

[0011] Preferably, the ground part is used to provide a metallized ground plane on the back of the flexible substrate layer, and is used to shield the metal environment from interfering with the tag.

[0012] Preferably, the radiation part is used to adhere the tag chip by conductive adhesive, and the light-emitting integrated part is used to extend the circuit at the tag chip to form a tag antenna feed point, and adhere the micro LED chip by conductive adhesive, so as to form a parallel circuit with the tag antenna feed point extension circuit, and to supply power by using the tag antenna inductive energy for tag state visualization.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. By adopting aluminum etching process integrated processing, the length and width of the tuning branch processing can be directly adjusted according to the requirements of different regions, so that the real part and imaginary part of the antenna impedance can be adjusted, the impedance of the tuning branch is conjugately matched with the impedance of the tag chip, and the resonant frequency of the antenna in the metal environment is optimized.

[0015] 2. In addition, in the actual metal environment application scene such as logistics storage, the center frequency of the tag can be adjusted by adjusting the processing position of the short-circuit part folding in the aluminum etching process according to the local RFID frequency band requirement, so as to conveniently adapt to the local RFID frequency band requirement.

[0016] 3. By setting the light-emitting integrated part, when the tag antenna is activated by electromagnetic induction, the light-emitting integrated part is lit according to the preset logic, the visualization of the tag antenna in the working state is realized, and personnel can easily and intuitively find.

[0017] The utility model discloses a flexible anti-metal bright light tag antenna structure schematic diagram, and the length and width of the tuning branch processing can be directly adjusted according to the requirements of different regions by adopting aluminum etching process integrated processing, so that the real part and imaginary part of the antenna impedance can be adjusted, the impedance of the tuning branch is conjugately matched with the impedance of the tag chip, and the center frequency of the tag can be adjusted by adjusting the processing position of the short-circuit part folding in the aluminum etching process according to the local RFID frequency band requirement, so as to conveniently adapt to the local RFID frequency band requirement. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 A flexible anti-metal bright light tag antenna structure schematic diagram is provided for the utility model.

[0019] Fig. 2 This is a schematic diagram of the folded structure of a flexible anti-metal illuminated tag antenna proposed in this utility model.

[0020] In the figure: 110, radiating part; 111, radiating area; 112, tuning branch; 113, light-emitting integrated part; 120, shorting part; 130, flexible substrate layer; 140, grounding part. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figs. 1-2 As shown, the flexible anti-metal light tag antenna proposed in this embodiment includes a radiating part 110, a shorting part 120 and a grounding part 140, and a flexible substrate layer 130 is bonded and fixed to the rear side of the radiating part 110.

[0023] The radiating part 110 includes a radiating area 111, a tuning branch 112 and a light-emitting integrated part 113. The radiating part 110, the shorting part 120 and the grounding part 140 are integrally formed from left to right. The shorting part 120 is used to fold the radiating part 110 and the grounding part 140 together.

[0024] Specifically, the flexible substrate layer 130 uses a low dielectric constant, bend-resistant foam material as a base. The thickness of the flexible substrate layer 130 is 0.8mm. The flexible substrate layer 130 is used to flexibly separate the radiating part 110 and the grounding part 140 after folding, so as to effectively suppress electromagnetic interference on the metal surface. The grounding part 140 is used to provide a metallized grounding plane on the back of the flexible substrate layer 130, so as to reduce the eddy current loss on the metal surface and shield the metal environment from interference to the tag.

[0025] Furthermore, the radiating part 110 is a dipole antenna structure formed on a substrate using an aluminum etching process. The materials of the radiating area 111, the tuning stub 112, and the light-emitting integrated part 113 are all conductive silver paste, used to achieve matching of its specific UHF frequency band, such as the Chinese frequency band 920MHz-925MHz. The tuning stub 112 is a T-type tuning stub. By adjusting the length and width of the tuning stub 112, the real and imaginary parts of its antenna impedance are adjusted so that it achieves conjugate matching with the impedance of the tag chip, thereby optimizing the resonant frequency of the antenna in a metallic environment.

[0026] Furthermore, the radiating part 110 is used to bond the tag chip with conductive adhesive, and the light-emitting integrated part 113 is used to lead out a circuit at the tag chip to form a tag antenna feed point extension circuit, and to bond a micro LED chip with conductive adhesive to form a parallel connection with the tag antenna feed point extension circuit, for using the tag antenna sensed energy to power the tag status visualization.

[0027] Working principle: In the fabrication of the tag antenna, an aluminum etching process is used to form a radiating part 110, a shorting part 120, and a grounding part 140 on the front side of the substrate. After forming a dipole antenna structure consisting of a radiating area 111, a tuning stub 112, and a light-emitting integrated part 113 on the substrate of the radiating part 110 using an aluminum etching process, the tag chip is bonded using a conductive adhesive bonding process. Then, the tuning stub 112 is connected to the tag chip using a conductive adhesive bonding process. The matching parameters are optimized through testing in an anechoic chamber shielded box. Then, the micro LED chip is connected in parallel with the antenna feed point extension circuit using a conductive adhesive bonding process. An outer PET protective layer is applied to ensure optical transmission and mechanical strength. A flexible encapsulation layer PET is covered in the radiating part 110 area. The grounding part 140 is folded to the back of the flexible substrate layer 130 through the shorting part 120 and bonded to it. The fabrication is then complete.

[0028] The materials used for the radiation area 111, tuning stub 112, and light-emitting integrated part 113 are all conductive silver paste, which can achieve matching of specific UHF frequency bands, such as the Chinese frequency band 920MHz~925MHz. In addition, during the aluminum etching process, the length and width of the tuning stub 112 can be directly adjusted according to the needs of different regions, thereby adjusting the real and imaginary parts of its antenna impedance to achieve conjugate matching with the impedance of the tag chip, optimizing the resonant frequency of the antenna in a metal environment. Furthermore, in actual metal environment applications such as logistics and warehousing, the center frequency of the tag can be adjusted by adjusting the processing position of the shorting part 120 during the aluminum etching process, according to the local RFID frequency band requirements, making it convenient to adapt to the local RFID frequency band requirements.

[0029] In addition, during use, the grounding part 140 of the tag antenna is attached to the surface of a metal object, such as the casing of mechanical equipment or electronic instruments, and fixed by adhesive backing. When the reader transmits radio frequency signals, the tag antenna is activated by electromagnetic induction, and the light-emitting integrated part 113 lights up according to preset logic. After receiving the radio frequency signal, the tag antenna is activated and sends the stored ID information or data back to the reader. The working status of the tag can be intuitively judged by the preset light flashing frequency of the reader software. This tag is a passive tag, powered by the energy provided by the electromagnetic induction of the reader, so as to realize the visualization of the working status of the tag antenna, making it easy for personnel to find it clearly and intuitively.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flexible anti-metal illuminated tag antenna, characterized in that: It includes a radiating part (110), a shorting part (120) and a grounding part (140), and a flexible substrate layer (130) is bonded and fixed to the rear side of the radiating part (110); The radiating part (110) includes a radiating area (111), a tuning branch (112), and a light-emitting integrated part (113). The radiating part (110), the shorting part (120), and the grounding part (140) are integrally formed from left to right. The shorting part (120) is used to fold the radiating part (110) and the grounding part (140) together.

2. The flexible anti-metal illuminated tag antenna according to claim 1, characterized in that: The flexible substrate layer (130) uses a low dielectric constant and bend-resistant foam material as the base, and the thickness of the flexible substrate layer (130) is 0.8 mm.

3. The flexible anti-metal illuminated tag antenna according to claim 1, characterized in that: The flexible substrate layer (130) is used to flexibly separate the radiating portion (110) and the grounding portion (140) in the middle after they are folded together.

4. The flexible anti-metal illuminated tag antenna according to claim 1, characterized in that: The radiating part (110) is a dipole antenna structure formed on a substrate using an aluminum etching process. The materials of the radiating area (111), the tuning stub (112), and the light-emitting integrated part (113) are all conductive silver paste, which is used to achieve matching of its specific UHF frequency band.

5. A flexible anti-metal illuminated tag antenna according to claim 1, characterized in that: The tuning stub (112) is a T-type tuning stub.

6. The flexible anti-metal illuminated tag antenna according to claim 1, characterized in that: The grounding portion (140) is used to provide a metallized grounding plane on the back side of the flexible substrate layer (130) to reduce eddy current loss on the metal surface and shield the tag from interference from the metal environment.

7. A flexible anti-metal illuminated tag antenna according to claim 1, characterized in that: The radiating part (110) is used to bond the tag chip with conductive adhesive, and the light-emitting integrated part (113) is used to lead out a circuit at the tag chip to form a tag antenna feed point extension circuit, and to bond a micro LED chip with conductive adhesive to form a parallel circuit with the tag antenna feed point extension circuit, which is used to visualize the tag status by using the tag antenna sensing energy.

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