WO2023226175A1 - Flexible elastic near-field communication antenna and preparation method therefor - Google Patents
Flexible elastic near-field communication antenna and preparation method therefor Download PDFInfo
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- WO2023226175A1 WO2023226175A1 PCT/CN2022/105336 CN2022105336W WO2023226175A1 WO 2023226175 A1 WO2023226175 A1 WO 2023226175A1 CN 2022105336 W CN2022105336 W CN 2022105336W WO 2023226175 A1 WO2023226175 A1 WO 2023226175A1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/02—Collapsible antennas; Retractable antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
Definitions
- the present invention relates to the field of flexible electronics and communication technologies, and specifically, to a flexible near-field communication antenna and a preparation method thereof.
- Flexible elastic electronic devices have the advantages of being stretchable, bendable, and conformable to any curved surface, and have important application prospects in the fields of smart medical care, health monitoring, and intelligent robots.
- flexible electronic devices are mainly based on active and wired information transmission, which greatly limits their applications.
- NFC Near field communication
- RFID radio frequency identification
- the antenna obtains energy through the principle of magnetic field coupling, which can realize both energy supply and data transmission.
- Research on flexible NFC antennas mainly uses conductive materials such as copper metal, textile conductive yarns, carbon nanomaterials, and conductive inks.
- the structure mainly includes 2D snake structures and traditional coil windings.
- the stretching range of these antennas is mainly between 15% and 100%. During the stretching process, there are problems such as poor conductivity or structural breakage.
- the purpose of the present invention is to provide a flexible and elastic near-field communication antenna that has good deformation resistance and can still work normally after any bending, twisting, folding, curling, and extrusion.
- the invention provides a flexible near-field communication antenna, which includes an antenna coil.
- the antenna coil is formed by spirally coiling wires on the same plane, and two adjacent turns of wires are arranged at intervals.
- the wires are composed of a number of arc lines connected end to end. The connection is formed, and the arc lines on two adjacent turns of wires correspond to each other so that the antenna coil has a spider web-like shape.
- the invention adopts a spider web-like shape.
- the spider web In real life, when the spider web is subjected to external impact force, it can absorb part of the impact load and maintain the stability of the web surface.
- the spider web has the functions of tuned vibration damping and impact protection, and can absorb part of the external impact force. impact load to maintain structural stability.
- each turn of the wire of the antenna coil includes at least 6 arc lines, the center of the arc lines is toward the outside of the antenna coil, and the arc of the arc lines is 15-60°.
- the wire is made of conductive material and polymer material through surface deposition, and the surface deposition method is selected from one of the template method, the microfluidic method, and the 3D printing method.
- the conductive material includes liquid metal, and the liquid metal is selected from at least one of gallium, gallium-indium alloy, and gallium-indium-tin alloy.
- the conductive material also includes an auxiliary conductive material, and the auxiliary conductive material is selected from the group consisting of iron-based, cobalt-based, nickel-based, copper-based, silver-based one- or multi-element metals, amorphous soft magnetic alloys, carbon nanotubes, At least one of graphite and graphene.
- the auxiliary conductive material is selected from the group consisting of iron-based, cobalt-based, nickel-based, copper-based, silver-based one- or multi-element metals, amorphous soft magnetic alloys, carbon nanotubes, At least one of graphite and graphene.
- the polymer material is selected from at least one of polydimethylsiloxane, polyurethane, aliphatic aromatic random copolyester, AB silica gel, and silicone weather-resistant glue.
- the flexible near field communication antenna further includes:
- a base, the antenna coil is fixedly arranged on the base;
- one end of the first electrode is electrically connected to one end of the antenna coil
- one end of the second electrode is electrically connected to the other end of the antenna coil
- An electrical component is fixedly provided on the substrate, and the other end of the first electrode and the other end of the second electrode are electrically connected through the electrical component.
- the material of the base is selected from cloth-based material, paper base, PI film, plastic film, PET film, PVA, PDMS, silicone, Ecoflex, skin, SBS elastomer, POE elastomer, rubber, resin, hydrogel At least one of glue, polyurethane, styrene block copolymer, PVC, polyimide, polyterephthalate plastic, polyethylene octene co-elastomer, and thermoplastic elastomer.
- the material of the first electrode and the second electrode is selected from one of gold, platinum, silver, copper, and oxidized gallium-based liquid metal, and the electrical component is selected from capacitors and/or resistors.
- Another object of the present invention is to provide a method for preparing a flexible elastic near field communication antenna.
- the preparation method specifically includes the following steps:
- step S2 Fix the antenna coil prepared in step S1 on the substrate, measure the inductance of the antenna coil and perform circuit matching, and select matching electrical components according to the circuit matching results;
- the present invention has the following advantages:
- the antenna coil of the flexible near-field communication antenna of the present invention adopts a specific structure with excellent resilience, which has good anti-deformation ability. When it is bent, twisted, folded, curled, or squeezed at will, it still remains can work normally;
- the flexible near-field communication antenna produced by the present invention has good flexibility and stretchability, can be conformal to the curved surface, fit well on the human skin surface, and can withstand more than 700% tensile deformation;
- the flexible near-field communication antenna produced by the present invention has good robustness and can be bent, twisted, folded, curled, and squeezed arbitrarily and still work stably.
- Figure 1 is a schematic structural diagram of a flexible near-field communication antenna produced according to an embodiment of the present invention
- Figure 2 is a diagram showing the relationship between the stretching degree and the inductance of the flexible near-field communication antenna produced according to the embodiment of the present invention
- Figure 3 is a diagram showing the relationship between different stretching degrees, frequency and loss of the flexible elastic near field communication antenna produced according to the embodiment of the present invention
- Figure 4 is a diagram showing the relationship between frequency and number of cycles when the flexible elastic near field communication antenna is stretched to 100% according to the embodiment of the present invention.
- 1-Antenna coil 2-Substrate; 3-First electrode; 4-Second electrode; 5-Electrical component; 6-Insulating layer.
- a flexible elastic near field communication antenna includes an antenna coil 1, a substrate 2, a first electrode 3, a second electrode 4 and an electrical component 5.
- the antenna coil 1 is formed by wires spirally coiled on the same plane. And two adjacent circles of conductors are arranged at intervals. The conductors are connected by a number of arc lines connected end to end. The center of the arc lines faces the outside of the antenna coil 1. The number of arc lines on the adjacent two circles of conductors is the same, 8. And the arcs of the arc lines are all the same, 45°.
- the antenna coil 1 is fixedly arranged on the substrate 2.
- One end of the first electrode 3 is electrically connected to one end of the antenna coil 1, and one end of the second electrode 3 is connected to the end of the antenna coil 1.
- the other end is electrically connected, and the electrical component 5 is fixedly arranged on the substrate 2 .
- the other end of the first electrode 3 and the other end of the second electrode 3 are electrically connected through the electrical component 5 .
- the antenna coil 1 is made of conductive material and polymer material through 3D printing.
- the composition of the conductive material includes liquid metal and auxiliary conductive material, and the liquid metal is gallium.
- Indium tin alloy, the auxiliary conductive material is selected from amorphous soft magnetic alloy, and the polymer material is polydimethylsiloxane.
- the antenna coil 1 is fixed on the substrate 2.
- the material of the substrate 2 is polyethylene octene co-elastomer.
- the inductance of the antenna coil 1 is measured and circuit matching is performed.
- the electrical component 5 is selected as a result of the circuit matching.
- a capacitor is selected as the electrical component 5.
- One end of the first electrode 3 and one end of the second electrode 4 are respectively led out from both ends of the antenna coil 1.
- the first The material of the electrode 3 and the second electrode 4 is oxidized gallium-based liquid metal, and the other end of the first electrode 3 and the other end of the second electrode 4 are electrically connected through a capacitor.
- an insulating layer 6 is fixedly provided on the wire body of the antenna coil 1 to prevent short circuit problems caused when the first electrode 3 and the second electrode 4 come into contact with the wire body of the antenna coil 1 .
- the flexible near-field communication antenna prepared in this example was placed on a stretching machine for a tensile test (0-700%), using a folding tool (0-180°), a bending tool (1-5mm), and a curling tool ( 0-1.25 turns) and twisting tool (0-270°) for multiple action tests, both can achieve stable operation near the 13.56MHz frequency.
- the test results are shown in Figure 2, Figure 3 and Figure 4.
- the antenna coil 1 is made of conductive materials and polymer materials through surface deposition, and the surface deposition method can be a template method or a microfluidic method.
- the conductive material is composed of liquid metal, and the liquid metal is selected from at least one of gallium, gallium-indium alloy, and gallium-indium-tin alloy.
- the conductive material is composed of liquid metal and auxiliary conductive material
- the auxiliary conductive material is selected from iron-based, cobalt-based, nickel-based, copper-based, silver-based one- or multi-element metals, carbon nanotubes, graphite, graphite At least one kind of alkenes.
- the polymer material is selected from at least one of polyurethane, aliphatic aromatic random copolyester, AB silica gel, and silicone weather-resistant glue.
- the material of the substrate 2 can be selected from cloth-based materials, paper bases, PI films, plastic films, PET films, PVA, PDMS, silicone, Ecoflex, skin, SBS elastomers, POE elastomers, rubber, resins , at least one of hydrogel, polyurethane, styrene block copolymer, PVC, polyimide, polyterephthalate plastic, and thermoplastic elastomer.
- the material of the first electrode 3 and the second electrode 4 may be selected from one of gold, platinum, silver, and copper.
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Abstract
Disclosed is a flexible elastic near-field communication antenna, comprising an antenna coil. The antenna coil is formed by spirally winding a wire on a same plane, every two adjacent coils of wire being disposed at an interval. The wire is formed by multiple arc lines connected end to end, two adjacent coils of wire having the same number of arc lines, and curvatures of the arc lines being the same. Also disclosed is a preparation method for the flexible elastic near-field communication antenna. Compared with the prior art, the flexible elastic near-field communication antenna of the present invention adopts a specific structure having excellent rebound elasticity, has good deformation resistance, and can still operate normally when bent, twisted, folded, curled, and squeezed in any way.
Description
本发明涉及柔弹性电子和通讯技术领域，具体而言，涉及一种柔弹性近场通信天线及其制备方法。The present invention relates to the field of flexible electronics and communication technologies, and specifically, to a flexible near-field communication antenna and a preparation method thereof.
近些年来，由于传统的平面电子器件难以适应复杂多变的环境，柔弹性电子器件受到了广泛研究学者的关注。柔弹性电子器件具有可拉伸、可弯曲、且可与任意曲面共形的优点，在智慧医疗、健康监测以及智能机器人等领域具有重要的应用前景。目前，柔弹性电子器件主要是以有源、有线信息传输为主，这极大地限制其应用。In recent years, due to the difficulty of traditional planar electronic devices adapting to complex and changeable environments, flexible electronic devices have attracted widespread attention from researchers. Flexible elastic electronic devices have the advantages of being stretchable, bendable, and conformable to any curved surface, and have important application prospects in the fields of smart medical care, health monitoring, and intelligent robots. At present, flexible electronic devices are mainly based on active and wired information transmission, which greatly limits their applications.
近场通信(NFC)是无线通信重要的一类，主要是基于13.56MHz的谐振频率工作，结合了非接触式射频识别(RFID)技术以及无线互连技术，实现设备了有线到无线、有源到无源的转变。其中最为核心的部件当属用来发射和接收电磁波的天线。天线通过磁场耦合原理获取能量，既能实现能量供应，也能实现数据传输。柔性NFC天线的研究中主要采用铜金属、纺织导电纱、碳系纳米材料、导电油墨等导电材料，结构方面主要包含2D蛇形结构和传统线圈绕制而成。这些天线的拉伸范围主要在15％-100％之间，在拉伸过程中存在着导电性变差或结构断裂等问题。Near field communication (NFC) is an important type of wireless communication. It mainly works based on the resonant frequency of 13.56MHz and combines non-contact radio frequency identification (RFID) technology and wireless interconnection technology to realize wired to wireless and active devices. Transition to sourcelessness. The most core component is undoubtedly the antenna used to transmit and receive electromagnetic waves. The antenna obtains energy through the principle of magnetic field coupling, which can realize both energy supply and data transmission. Research on flexible NFC antennas mainly uses conductive materials such as copper metal, textile conductive yarns, carbon nanomaterials, and conductive inks. The structure mainly includes 2D snake structures and traditional coil windings. The stretching range of these antennas is mainly between 15% and 100%. During the stretching process, there are problems such as poor conductivity or structural breakage.
因此，开发更大拉伸范围且具有抗形变功能的柔弹性近场通信天线具有重要的意义。Therefore, it is of great significance to develop flexible and elastic near-field communication antennas with larger stretching range and anti-deformation function.
发明内容Contents of the invention
本发明的目的是提供一种柔弹性近场通信天线，其具有良好的抗形变 能力，当对其进行任意的弯折、扭转、折叠、卷曲、挤压之后，依然能正常工作。The purpose of the present invention is to provide a flexible and elastic near-field communication antenna that has good deformation resistance and can still work normally after any bending, twisting, folding, curling, and extrusion.
本发明提供一种柔弹性近场通信天线，包括天线线圈，所述天线线圈由导线在同一平面上螺旋盘绕形成，且相邻两圈导线间隔设置，所述导线由若干首尾相连的圆弧线连接形成，相邻两圈导线上的圆弧线相对应使得所述天线线圈呈类蜘蛛网形。The invention provides a flexible near-field communication antenna, which includes an antenna coil. The antenna coil is formed by spirally coiling wires on the same plane, and two adjacent turns of wires are arranged at intervals. The wires are composed of a number of arc lines connected end to end. The connection is formed, and the arc lines on two adjacent turns of wires correspond to each other so that the antenna coil has a spider web-like shape.
本发明采用类蜘蛛网形，在现实生活中，当蜘蛛网遭受外界冲击力时，可吸收一部分冲击载荷，并保持网面的稳定蜘蛛网具有调谐振动阻尼和冲击保护的作用，能吸收部分外部冲击载荷，保持结构稳定。The invention adopts a spider web-like shape. In real life, when the spider web is subjected to external impact force, it can absorb part of the impact load and maintain the stability of the web surface. The spider web has the functions of tuned vibration damping and impact protection, and can absorb part of the external impact force. impact load to maintain structural stability.
作为优选，所述天线线圈的每一圈导线包括至少6个圆弧线，所述圆弧线的圆心朝向所述天线线圈的外侧，且所述圆弧线的弧度为15-60°。Preferably, each turn of the wire of the antenna coil includes at least 6 arc lines, the center of the arc lines is toward the outside of the antenna coil, and the arc of the arc lines is 15-60°.
作为优选，所述导线为导电材料与高分子材料通过表面沉积制得，且所述表面沉积的方法选自模板法、微流道法、3D打印法中的一种。Preferably, the wire is made of conductive material and polymer material through surface deposition, and the surface deposition method is selected from one of the template method, the microfluidic method, and the 3D printing method.
作为优选，所述导电材料包括液态金属，且所述液态金属选自镓、镓铟合金、镓铟锡合金中的至少一种。Preferably, the conductive material includes liquid metal, and the liquid metal is selected from at least one of gallium, gallium-indium alloy, and gallium-indium-tin alloy.
作为优选，所述导电材料还包括辅助导电材料，且所述辅助导电材料选自铁基、钴基、镍基、铜基、银基一元或多元金属、非晶软磁合金、碳纳米管、石墨、石墨烯中的至少一种。Preferably, the conductive material also includes an auxiliary conductive material, and the auxiliary conductive material is selected from the group consisting of iron-based, cobalt-based, nickel-based, copper-based, silver-based one- or multi-element metals, amorphous soft magnetic alloys, carbon nanotubes, At least one of graphite and graphene.
作为优选，所述高分子材料选自聚二甲基硅氧烷、聚氨酯、脂肪族芳香族无规共聚酯、AB硅胶、硅酮耐候胶中的至少一种。Preferably, the polymer material is selected from at least one of polydimethylsiloxane, polyurethane, aliphatic aromatic random copolyester, AB silica gel, and silicone weather-resistant glue.
作为优选，所述的柔弹性近场通信天线还包括：Preferably, the flexible near field communication antenna further includes:
基底，所述天线线圈固定设置在所述基底上；A base, the antenna coil is fixedly arranged on the base;
第一电极，所述第一电极的一端与所述天线线圈的一端电连接；a first electrode, one end of the first electrode is electrically connected to one end of the antenna coil;
第二电极，所述第二电极的一端与所述天线线圈的另一端电连接；a second electrode, one end of the second electrode is electrically connected to the other end of the antenna coil;
电器元件，所述电器元件固定设置在所述基底上，所述第一电极的另一端与所述第二电极的另一端通过所述电器元件电连接。An electrical component is fixedly provided on the substrate, and the other end of the first electrode and the other end of the second electrode are electrically connected through the electrical component.
作为优选，所述基底的材料选自布基材料、纸基、PI膜、塑料膜、PET膜、PVA、PDMS、硅胶、Ecoflex、皮肤、SBS弹性体、POE弹性体、橡胶、树脂、水凝胶、聚氨酯、苯乙烯嵌段共聚物、PVC、聚酰亚胺、聚对苯二甲酸类塑料、聚乙烯辛烯共弹性体、热塑性弹性体中的至少一种。Preferably, the material of the base is selected from cloth-based material, paper base, PI film, plastic film, PET film, PVA, PDMS, silicone, Ecoflex, skin, SBS elastomer, POE elastomer, rubber, resin, hydrogel At least one of glue, polyurethane, styrene block copolymer, PVC, polyimide, polyterephthalate plastic, polyethylene octene co-elastomer, and thermoplastic elastomer.
作为优选，所述第一电极和第二电极的材料选自金、铂、银、铜、氧化后的镓基液态金属中的其中一种，所述电器元件选自电容和/或电阻。Preferably, the material of the first electrode and the second electrode is selected from one of gold, platinum, silver, copper, and oxidized gallium-based liquid metal, and the electrical component is selected from capacitors and/or resistors.
本发明的另一个目的在于提供一种柔弹性近场通信天线的制备方法，所述制备方法具体包括如下步骤：Another object of the present invention is to provide a method for preparing a flexible elastic near field communication antenna. The preparation method specifically includes the following steps:
S1、设定天线线圈的形状排布，并根据设定的形状排布制得天线线圈；S1. Set the shape arrangement of the antenna coil, and prepare the antenna coil according to the set shape arrangement;
S2、将步骤S1中制得的天线线圈固定在基底上，测量天线线圈的电感并进行电路匹配，根据电路匹配结果选择相匹配的电器元件；S2. Fix the antenna coil prepared in step S1 on the substrate, measure the inductance of the antenna coil and perform circuit matching, and select matching electrical components according to the circuit matching results;
S3、将第一电极的一端与天线线圈的一端电连接，第二电极的一端与天线线圈的另一端电连接，第一电极的另一端与第二电极的另一端通过步骤S2中选择的相匹配的电器元件电连接。S3. Electrically connect one end of the first electrode to one end of the antenna coil, and electrically connect one end of the second electrode to the other end of the antenna coil. The other end of the first electrode and the other end of the second electrode pass through the phase selected in step S2. Matching electrical components are electrically connected.
与现有技术相比，本发明具有如下优点：Compared with the prior art, the present invention has the following advantages:
其一、本发明柔弹性近场通信天线的天线线圈采用回弹性优良的特定结构，其具有良好的抗形变能力，当对其进行任意的弯折、扭转、折叠、卷曲、挤压之后，依然能正常工作；First, the antenna coil of the flexible near-field communication antenna of the present invention adopts a specific structure with excellent resilience, which has good anti-deformation ability. When it is bent, twisted, folded, curled, or squeezed at will, it still remains can work normally;
其二、本发明制得的柔弹性近场通信天线具有较好的柔性和可拉伸性，可以与曲面共形，良好地贴合在人体皮肤表面，可以承受超过700％的拉伸形变；Second, the flexible near-field communication antenna produced by the present invention has good flexibility and stretchability, can be conformal to the curved surface, fit well on the human skin surface, and can withstand more than 700% tensile deformation;
其三、本发明制得的柔弹性近场通信天线具有较好鲁棒性，可以任意的弯折、扭转、折叠、卷曲、挤压后依然能够稳定的工作。Third, the flexible near-field communication antenna produced by the present invention has good robustness and can be bent, twisted, folded, curled, and squeezed arbitrarily and still work stably.
图1为本发明实施例制得的柔弹性近场通信天线的结构示意图；Figure 1 is a schematic structural diagram of a flexible near-field communication antenna produced according to an embodiment of the present invention;
图2是本发明实施例制得的柔弹性近场通信天线的拉伸程度与电感关系图；Figure 2 is a diagram showing the relationship between the stretching degree and the inductance of the flexible near-field communication antenna produced according to the embodiment of the present invention;
图3是本发明实施例制得的柔弹性近场通信天线的不同拉伸程度与频率、损耗的关系图；Figure 3 is a diagram showing the relationship between different stretching degrees, frequency and loss of the flexible elastic near field communication antenna produced according to the embodiment of the present invention;
图4是本发明实施例制得的柔弹性近场通信天线在拉伸程度100％的情况下，频率与循环次数的关系图。Figure 4 is a diagram showing the relationship between frequency and number of cycles when the flexible elastic near field communication antenna is stretched to 100% according to the embodiment of the present invention.
附图标记说明：Explanation of reference symbols:
1-天线线圈；2-基底；3-第一电极；4-第二电极；5-电器元件；6-绝缘层。1-Antenna coil; 2-Substrate; 3-First electrode; 4-Second electrode; 5-Electrical component; 6-Insulating layer.
为使本发明的上述目的、特征和优点能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。In order to make the above objects, features and advantages of the present invention more obvious and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
实施例Example
如图1所示，一种柔弹性近场通信天线，包括天线线圈1、基底2、第一电极3、第二电极4和电器元件5，天线线圈1由导线在同一平面上螺旋盘绕形成，且相邻两圈导线间隔设置，导线由若干首尾相连的圆弧线连接形成，圆弧线的圆心朝向天线线圈1的外侧，相邻两圈导线上的圆弧线数量相同均为8个，且圆弧线的弧度均相同，均为45°，天线线圈1固定设置在基底2上，第一电极3的一端与天线线圈1的一端电连接，第二电极3的一端与天线线圈1的另一端电连接，电器元件5固定设置在基底2上，第一电极3的另一端与第二电极3的另一端通过电器元件5电连接。As shown in Figure 1, a flexible elastic near field communication antenna includes an antenna coil 1, a substrate 2, a first electrode 3, a second electrode 4 and an electrical component 5. The antenna coil 1 is formed by wires spirally coiled on the same plane. And two adjacent circles of conductors are arranged at intervals. The conductors are connected by a number of arc lines connected end to end. The center of the arc lines faces the outside of the antenna coil 1. The number of arc lines on the adjacent two circles of conductors is the same, 8. And the arcs of the arc lines are all the same, 45°. The antenna coil 1 is fixedly arranged on the substrate 2. One end of the first electrode 3 is electrically connected to one end of the antenna coil 1, and one end of the second electrode 3 is connected to the end of the antenna coil 1. The other end is electrically connected, and the electrical component 5 is fixedly arranged on the substrate 2 . The other end of the first electrode 3 and the other end of the second electrode 3 are electrically connected through the electrical component 5 .
本实施例中的柔弹性近场通信天线的制备方法为：The preparation method of the flexible elastic near field communication antenna in this embodiment is:
提前用切片软件设置好所需的电路模型，本实施例中，天线线圈1为导电材料与高分子材料通过3D打印法制得，导电材料的组成包括液态金属和辅助导电材料，且液态金属为镓铟锡合金，辅助导电材料选自为非晶软磁合金，高分子材料为聚二甲基硅氧烷，设置打印参数包括挤出针头粗细 大小为14G～32G，根据打印浆料的粘稠度设置打印速度为5mm/s-60mm/s，挤出量大小通常设置为100％，挤出气压为100Kpa～400Kpa，将打印浆料放入料筒中，点击开始打印，浆料按照设定的天线结构模型路径均匀挤出得到天线线圈1，接下来，将天线线圈1固定在基底2上，基底2的材料为聚乙烯辛烯共弹性体，然后测量天线线圈1的电感并进行电路匹配，根据电路匹配结果选择电器元件5，本实施例中，电器元件5选择电容器，将第一电极3的一端和第二电极4的一端分别从天线线圈1的两端引出，本实施例中，第一电极3和第二电极4的材料为氧化后的镓基液态金属，将第一电极3的另一端和第二电极4的另一端通过电容器电连接。Use the slicing software to set up the required circuit model in advance. In this embodiment, the antenna coil 1 is made of conductive material and polymer material through 3D printing. The composition of the conductive material includes liquid metal and auxiliary conductive material, and the liquid metal is gallium. Indium tin alloy, the auxiliary conductive material is selected from amorphous soft magnetic alloy, and the polymer material is polydimethylsiloxane. Set the printing parameters including the thickness of the extrusion needle to 14G ~ 32G, according to the viscosity of the printing slurry Set the printing speed to 5mm/s-60mm/s, the extrusion volume is usually set to 100%, and the extrusion air pressure is 100Kpa~400Kpa. Put the printing slurry into the barrel, click to start printing, and the slurry will follow the set antenna The structural model path is uniformly extruded to obtain the antenna coil 1. Next, the antenna coil 1 is fixed on the substrate 2. The material of the substrate 2 is polyethylene octene co-elastomer. Then the inductance of the antenna coil 1 is measured and circuit matching is performed. According to The electrical component 5 is selected as a result of the circuit matching. In this embodiment, a capacitor is selected as the electrical component 5. One end of the first electrode 3 and one end of the second electrode 4 are respectively led out from both ends of the antenna coil 1. In this embodiment, the first The material of the electrode 3 and the second electrode 4 is oxidized gallium-based liquid metal, and the other end of the first electrode 3 and the other end of the second electrode 4 are electrically connected through a capacitor.
在上述实施例中，在天线线圈1的线身上还固定设置有绝缘层6，用于防止第一电极3、第二电极4与天线线圈1的线身相接触时引发的短路问题。In the above embodiment, an insulating layer 6 is fixedly provided on the wire body of the antenna coil 1 to prevent short circuit problems caused when the first electrode 3 and the second electrode 4 come into contact with the wire body of the antenna coil 1 .
将本实施例制得的柔弹性近场通信天线放置在拉伸机上进行拉伸测试(0-700％)，利用折叠工具(0-180°)、弯曲工具(1-5mm)、卷曲工具(0-1.25圈)、扭转工具(0-270°)进行多重动作测试，均可以是实现在13.56MHz频率附近稳定的工作，检测结果见图2、图3和图4。The flexible near-field communication antenna prepared in this example was placed on a stretching machine for a tensile test (0-700%), using a folding tool (0-180°), a bending tool (1-5mm), and a curling tool ( 0-1.25 turns) and twisting tool (0-270°) for multiple action tests, both can achieve stable operation near the 13.56MHz frequency. The test results are shown in Figure 2, Figure 3 and Figure 4.
在其他实施例中，天线线圈1为导电材料与高分子材料通过表面沉积制得，且表面沉积的方法可为模板法或微流道法。In other embodiments, the antenna coil 1 is made of conductive materials and polymer materials through surface deposition, and the surface deposition method can be a template method or a microfluidic method.
在其他实施例中，导电材料的组成为液态金属，且液态金属选自镓、镓铟合金、镓铟锡合金中的至少一种。In other embodiments, the conductive material is composed of liquid metal, and the liquid metal is selected from at least one of gallium, gallium-indium alloy, and gallium-indium-tin alloy.
在其他实施例中，导电材料的组成为液态金属和辅助导电材料，且辅助导电材料选自铁基、钴基、镍基、铜基、银基一元或多元金属、碳纳米管、石墨、石墨烯中的至少一种。In other embodiments, the conductive material is composed of liquid metal and auxiliary conductive material, and the auxiliary conductive material is selected from iron-based, cobalt-based, nickel-based, copper-based, silver-based one- or multi-element metals, carbon nanotubes, graphite, graphite At least one kind of alkenes.
在其他实施例中，高分子材料选自聚氨酯、脂肪族芳香族无规共聚酯、AB硅胶、硅酮耐候胶中的至少一种。In other embodiments, the polymer material is selected from at least one of polyurethane, aliphatic aromatic random copolyester, AB silica gel, and silicone weather-resistant glue.
在其他实施例中，基底2的材料可选自布基材料、纸基、PI膜、塑料膜、PET膜、PVA、PDMS、硅胶、Ecoflex、皮肤、SBS弹性体、POE弹性体、橡胶、树脂、水凝胶、聚氨酯、苯乙烯嵌段共聚物、PVC、聚酰亚胺、聚对苯二甲酸类塑料、热塑性弹性体中的至少一种。In other embodiments, the material of the substrate 2 can be selected from cloth-based materials, paper bases, PI films, plastic films, PET films, PVA, PDMS, silicone, Ecoflex, skin, SBS elastomers, POE elastomers, rubber, resins , at least one of hydrogel, polyurethane, styrene block copolymer, PVC, polyimide, polyterephthalate plastic, and thermoplastic elastomer.
在其他实施例中，第一电极3和第二电极4的材料可选自金、铂、银、铜中的其中一种。In other embodiments, the material of the first electrode 3 and the second electrode 4 may be selected from one of gold, platinum, silver, and copper.
在其他实施例中，电器元件5可选择电阻。In other embodiments, the electrical component 5 may be a resistor.
以上实施例中原材料易得，制备成本较低，绿色环保，利用率高，采用3D直写打印技术大大提高了柔弹性近场通信天线的分辨率，通过无损的获得液态金属柔弹性近场通信天线线圈能保证良好的可拉伸性和高导电率。利用特定的结构的特点，创新的将其应用于柔弹性近场通信天线，使得天线具有超弹性、抗变形、多方向拉伸特点，在信息交换、可穿戴、可植入等动物、植物以及人体数据监测方面有着巨大的应用潜力。In the above embodiments, the raw materials are easily available, the preparation cost is low, the environment is green, and the utilization rate is high. The use of 3D direct writing printing technology greatly improves the resolution of the flexible near field communication antenna, and obtains liquid metal flexible near field communication without loss. The antenna coil ensures good stretchability and high conductivity. Utilizing the characteristics of a specific structure, it is innovatively applied to flexible and elastic near-field communication antennas, making the antenna super-elastic, resistant to deformation, and multi-directional stretching. It is widely used in information exchange, wearable, implantable and other animals, plants and other fields. There is huge application potential in human body data monitoring.
虽然本公开披露如上，但本公开的保护范围并非仅限于此。本领域技术人员，在不脱离本公开的精神和范围的前提下，可进行各种变更与修改，这些变更与修改均将落入本发明的保护范围。Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present invention.
Claims (10)
- 一种柔弹性近场通信天线，其特征在于：包括天线线圈(1)，所述天线线圈(1)由导线在同一平面上螺旋盘绕形成，且相邻两圈导线间隔设置，所述导线由若干首尾相连的圆弧线连接形成，相邻两圈导线上的圆弧线相对应使得所述天线线圈(1)呈类蜘蛛网形。A flexible near-field communication antenna, characterized by: including an antenna coil (1), the antenna coil (1) is formed by a conductor spirally coiled on the same plane, and two adjacent turns of the conductor are arranged at intervals, and the conductor is composed of A number of arc lines connected end to end are connected, and the arc lines on two adjacent turns of wires correspond to each other so that the antenna coil (1) has a spider web-like shape.
- 如权利要求1所述的柔弹性近场通信天线，其特征在于，所述天线线圈(1)的每一圈导线包括至少6个圆弧线，所述圆弧线的圆心朝向所述天线线圈(1)的外侧，且所述圆弧线的弧度为15-60°。The flexible near-field communication antenna according to claim 1, characterized in that each turn of the wire of the antenna coil (1) includes at least 6 arc lines, and the center of the arc lines faces the antenna coil. (1), and the arc of the arc is 15-60°.
- 如权利要求1所述的柔弹性近场通信天线，其特征在于：所述导线为导电材料与高分子材料通过表面沉积制得，且所述表面沉积的方法选自模板法、微流道法、3D打印法中的一种。The flexible near-field communication antenna according to claim 1, wherein the wire is made of conductive material and polymer material through surface deposition, and the surface deposition method is selected from the group consisting of template method and microfluidic method. , one of the 3D printing methods.
- 如权利要求3所述的柔弹性近场通信天线，其特征在于：所述导电材料包括液态金属，且所述液态金属选自镓、镓铟合金、镓铟锡合金中的至少一种。The flexible near-field communication antenna of claim 3, wherein the conductive material includes liquid metal, and the liquid metal is selected from at least one selected from the group consisting of gallium, gallium-indium alloy, and gallium-indium-tin alloy.
- 如权利要求4所述的柔弹性近场通信天线，其特征在于：所述导电材料还包括辅助导电材料，且所述辅助导电材料选自铁基、钴基、镍基、铜基、银基一元或多元金属、非晶软磁合金、碳纳米管、石墨、石墨烯中的至少一种。The flexible near-field communication antenna according to claim 4, characterized in that: the conductive material further includes an auxiliary conductive material, and the auxiliary conductive material is selected from the group consisting of iron-based, cobalt-based, nickel-based, copper-based, and silver-based. At least one of a single or multi-element metal, amorphous soft magnetic alloy, carbon nanotube, graphite, and graphene.
- 如权利要求3所述的柔弹性近场通信天线，其特征在于：所述高分子材料选自聚二甲基硅氧烷、聚氨酯、脂肪族芳香族无规共聚酯、AB硅胶、硅酮耐候胶中的至少一种。The flexible near-field communication antenna according to claim 3, wherein the polymer material is selected from polydimethylsiloxane, polyurethane, aliphatic aromatic random copolyester, AB silica gel, silicone At least one type of weather-resistant glue.
- 如权利要求1所述的柔弹性近场通信天线，其特征在于，还包括：The flexible near-field communication antenna according to claim 1, further comprising:基底(2)，所述天线线圈(1)固定设置在所述基底(2)上；Base (2), the antenna coil (1) is fixedly arranged on the base (2);第一电极(3)，所述第一电极(3)的一端与所述天线线圈(1)的一端电连接；A first electrode (3), one end of the first electrode (3) is electrically connected to one end of the antenna coil (1);第二电极(4)，所述第二电极(4)的一端与所述天线线圈(1)的另一端 电连接；A second electrode (4), one end of the second electrode (4) is electrically connected to the other end of the antenna coil (1);电器元件(5)，所述电器元件(5)固定设置在所述基底(2)上，所述第一电极(3)的另一端与所述第二电极(4)的另一端通过所述电器元件(5)电连接。Electrical component (5), the electrical component (5) is fixedly arranged on the base (2), and the other end of the first electrode (3) and the other end of the second electrode (4) pass through the The electrical components (5) are electrically connected.
- 如权利要求7所述的柔弹性近场通信天线，其特征在于：所述基底(2)的材料选自布基材料、纸基、PI膜、塑料膜、PET膜、PVA、PDMS、硅胶、Ecoflex、皮肤、SBS弹性体、POE弹性体、橡胶、树脂、水凝胶、聚氨酯、苯乙烯嵌段共聚物、PVC、聚酰亚胺、聚对苯二甲酸类塑料、聚乙烯辛烯共弹性体、热塑性弹性体中的至少一种。The flexible near-field communication antenna according to claim 7, characterized in that: the material of the substrate (2) is selected from cloth-based materials, paper bases, PI films, plastic films, PET films, PVA, PDMS, silica gel, Ecoflex, skin, SBS elastomer, POE elastomer, rubber, resin, hydrogel, polyurethane, styrenic block copolymer, PVC, polyimide, polyterephthalate plastic, polyethylene octene co-elastomer At least one of body and thermoplastic elastomer.
- 如权利要求7所述的柔弹性近场通信天线，其特征在于：所述第一电极(3)和第二电极(4)的材料选自金、铂、银、铜、氧化后的镓基液态金属中的其中一种，所述电器元件(6)选自电容和/或电阻。The flexible near-field communication antenna according to claim 7, characterized in that: the materials of the first electrode (3) and the second electrode (4) are selected from the group consisting of gold, platinum, silver, copper, and oxidized gallium-based materials. One of the liquid metals, the electrical component (6) is selected from capacitors and/or resistors.
- 一种如权利要求7所述的柔弹性近场通信天线的制备方法，其特征在于，所述制备方法具体包括如下步骤：A method for preparing a flexible near-field communication antenna according to claim 7, characterized in that the preparation method specifically includes the following steps:S1、设定天线线圈(1)的形状排布，并根据设定的形状排布制得天线线圈(1)；S1. Set the shape arrangement of the antenna coil (1), and prepare the antenna coil (1) according to the set shape arrangement;S2、将步骤S1中制得的天线线圈(1)固定在基底(2)上，测量天线线圈(1)的电感并进行电路匹配，根据电路匹配结果选择相匹配的电器元件(6)；S2. Fix the antenna coil (1) prepared in step S1 on the substrate (2), measure the inductance of the antenna coil (1) and perform circuit matching, and select matching electrical components (6) according to the circuit matching results;S3、将第一电极(3)的一端与天线线圈(1)的一端电连接，第二电极(4)的一端与天线线圈(1)的另一端电连接，第一电极(3)的另一端与第二电极(4)的另一端通过步骤S2中选择的相匹配的电器元件(6)电连接。S3. Electrically connect one end of the first electrode (3) to one end of the antenna coil (1), one end of the second electrode (4) to the other end of the antenna coil (1), and the other end of the first electrode (3). One end is electrically connected to the other end of the second electrode (4) through the matching electrical component (6) selected in step S2.
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| CN202210561899.9A CN115189138A (en) | 2022-05-23 | 2022-05-23 | Flexible and elastic near field communication antenna and preparation method thereof |
| CN202210561899.9 | 2022-05-23 |
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| EP2656320A1 (en) * | 2010-12-20 | 2013-10-30 | Huf Hülsbeck & Fürst GmbH & Co. KG | Compact id transmitter comprising an nfc communications option for a motor vehicle access system |
| CN106056190A (en) * | 2015-04-14 | 2016-10-26 | 三星电子株式会社 | Near-field communication package in portable device and near-field communication method |
| CN106252828A (en) * | 2015-06-12 | 2016-12-21 | 三星电子株式会社 | Near-field communication aerial and there is near field communication means and the mobile system of this antenna |
| CN107181049A (en) * | 2016-03-10 | 2017-09-19 | 速码波科技股份有限公司 | Anneta module |
| CN108668431A (en) * | 2017-03-28 | 2018-10-16 | 国家纳米科学中心 | The preparation method and purposes of flexible extensible conducting wire and circuit |
| CN209544604U (en) * | 2019-04-28 | 2019-10-25 | 成都德杉科技有限公司 | A kind of spider net form near field super high frequency radio frequency identifies reader antenna |
-
2022
- 2022-05-23 CN CN202210561899.9A patent/CN115189138A/en active Pending
- 2022-07-13 WO PCT/CN2022/105336 patent/WO2023226175A1/en unknown
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| EP2656320A1 (en) * | 2010-12-20 | 2013-10-30 | Huf Hülsbeck & Fürst GmbH & Co. KG | Compact id transmitter comprising an nfc communications option for a motor vehicle access system |
| CN106056190A (en) * | 2015-04-14 | 2016-10-26 | 三星电子株式会社 | Near-field communication package in portable device and near-field communication method |
| CN106252828A (en) * | 2015-06-12 | 2016-12-21 | 三星电子株式会社 | Near-field communication aerial and there is near field communication means and the mobile system of this antenna |
| CN107181049A (en) * | 2016-03-10 | 2017-09-19 | 速码波科技股份有限公司 | Anneta module |
| CN108668431A (en) * | 2017-03-28 | 2018-10-16 | 国家纳米科学中心 | The preparation method and purposes of flexible extensible conducting wire and circuit |
| CN209544604U (en) * | 2019-04-28 | 2019-10-25 | 成都德杉科技有限公司 | A kind of spider net form near field super high frequency radio frequency identifies reader antenna |
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