CN102509872A - UHF (ultra high frequency) RFID (radio frequency identification device) electronic label antenna - Google Patents

UHF (ultra high frequency) RFID (radio frequency identification device) electronic label antenna Download PDF

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CN102509872A
CN102509872A CN2011103256355A CN201110325635A CN102509872A CN 102509872 A CN102509872 A CN 102509872A CN 2011103256355 A CN2011103256355 A CN 2011103256355A CN 201110325635 A CN201110325635 A CN 201110325635A CN 102509872 A CN102509872 A CN 102509872A
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rfid tag
uhf rfid
antenna
hilbert
structure
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CN2011103256355A
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Chinese (zh)
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安兵
龚挺
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无锡邦普氿顺微电子有限公司
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Priority to CN2011103256355A priority Critical patent/CN102509872A/en
Publication of CN102509872A publication Critical patent/CN102509872A/en

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Abstract

The invention discloses a UHF (ultra high frequency) RFID (radio frequency identification device) electronic label antenna. The electronic label antenna comprises a medium substrate with tuning and supporting effect, and a resonance metal antenna pattern arranged on an upper surface of the medium substrate. The UHF RFID electronic label antenna provided by the invention can overcome the defects that the meander dipole impedance is hard to match and the bandwidth is narrow in the prior art so as to realize the advantages that the meander dipole impedance is easy to match, the bandwidth is wide and the volume is small.

Description

一种UHF RFID电子标签天线 One kind of UHF RFID tag antenna

[0001] 技术领域 [0001] Technical Field

[0002] 本发明涉及射频识别电子标签天线,具体地,涉及一种UHF RFID电子标签天线。 [0002] The present invention relates to radio frequency identification tag antenna, particularly, to a UHF RFID tag antenna. 背景技术 Background technique

[0003] 无线射频识别(Radio Frequency Identification,简称RFID)技术是一种非接触的自动识别技术,它是将信息在RFID卡(也称作电子标签)上进行编码,再将此标签粘贴在需要被识别或者追踪的物品上,在物品移动时就能实现对该物品的跟踪,形成“流动数据库”。 [0003] RFID (Radio Frequency Identification, RFID for short) technology is a non-contact automatic identification technology, which is the information in the RFID card (also referred to as electronic tag) is encoded on the label is stuck then this requires the article identified or tracked, the tracking can be realized when the article moves the article to form a "flow database." RFID技术具有可靠性高、保密性强、方便快捷等特点;此外,由于它的数据容量大,并可以对标签数据进行更改和加密,同时能够实现非视距扫描,因此被广泛应用在包装、物流等行业。 RFID technology with high reliability, confidentiality, and other convenience features; In addition, because of its large capacity of data, and can change the tag and encrypted data while scanning NLOS possible, so it is widely used in the packaging, logistics and other industries.

[0004] 由于RFID系统的最大特点是非接触识别,RFID标签与读写器实现数据通信过程中起关键作用的是天线,利用天线作为发送或接收无线电波的装置。 [0004] Since the biggest feature of the non-contact identification RFID system, RFID tag and reader for data communication process plays a key role is an antenna, the antenna as a transmitting apparatus or receiving radio waves. 一方面,无源的RFID 标签芯片的启动电路需要通过天线激活,在读写器天线产生的电磁场中获得足够的能量; 另一方而,天线决定了RFID标签与读写器之间的通信信道和通信方式。 In one aspect, the passive RFID tag chip antenna need to activate the starting circuit, to obtain enough energy in the electromagnetic field generated by the reader antenna; and the other of the antenna determines the communication channel between the RFID tags and readers and way of communication. 因此,在RFID系统中,标签天线占有重要的地位,对其详细的研究非常有意义。 Thus, in the RFID system, the tag antenna plays an important role, a detailed study of its very meaningful.

[0005] 由于UHF识别距离远(一般为几米),传输速度快,特高频(Ultra High Frequency, 简称UHF)电子标签应用范围很广,但是UHF RFID电子标签天线设计与应用具有以下的难题: [0005] Since the UHF recognition distance (typically a few meters), transmission speed, UHF (Ultra High Frequency, referred UHF) RFID wide range of applications, but UHF RFID tag antenna design and application has the following problems:

⑴阻抗匹配问题:要获得远的识别距离,要求天线与芯片良好匹配;但是由于低成本的要求,RFID芯片要与其天线直接相连;而RFID芯片一般具有小电阻、大容抗的阻抗特性, 对天线与芯片的匹配带来很大的问题; ⑴ impedance matching: To obtain the recognition distance away, the antenna requires a good match with the chip; however because of the low cost requirement, the RFID chip to an antenna directly connected thereto; and the RFID chip typically has a small resistance, the impedance characteristics of a large capacitance, for matching antenna and the chip of a great deal of problems;

⑵增益问题:要获得远的识别距离,要求天线具有高的增益,而传统的偶极子增益不会超过2db,小型化的标签更是以增益降低为代价的; ⑵ gain problem: To get away from identifying, requires a high gain antenna, and traditional dipole gain no more than 2db, miniaturization of the label is to gain more reduce the cost of;

⑶成本问题:要想大规模应用RFID标签,标签的成本必须降下来,这要求标签图案必须尽可能简单,而且最好能在同一平面上; ⑶ cost: To large-scale application of RFID tags, tag costs must come down, which requires label image must be as simple, and can be preferably on the same plane;

⑷带宽问题:由于欧洲的UHF标准为850-860MHZ,而北美的UHF标准为910-920MHZ ;故一般要求天线的带宽最好能全部覆盖这两个频段。 ⑷ bandwidth problem: Since the standards for the European UHF 850-860MHZ, the North American standard UHF 910-920MHZ; it is generally best to the requirements of the entire bandwidth of the antenna cover both bands.

[0006] 综上所述,在实现本发明的过程中,发明人发现现有技术中至少存在弯折偶极子阻抗匹配困难与带宽较窄等缺陷。 [0006] In summary, in the process of implementing the present invention, the inventor finds at least the bent dipole impedance bandwidth is narrow and difficult to defects in the prior art.

发明内容 SUMMARY

[0007] 本发明的目的在于,针对上述问题,提出一种UHF RFID电子标签天线,以实现弯折偶极子阻抗匹配容易、带宽较宽与体积小的优点。 Objective [0007] The present invention is, for the above-described problem, a UHF RFID tag antenna, a folded dipole impedance matching to achieve easy, small size and wide bandwidth advantage.

[0008] 为实现上述目的,本发明采用的技术方案是:一种UHF RFID电子标签天线,包括具有调谐与支撑作用的介质基板,以及设在所述介质基板上表面的谐振金属天线图案。 [0008] To achieve the above object, the present invention adopts the technical solution is: A UHF RFID tag antenna, the tuner comprising a dielectric substrate having a supporting role, and a resonant metal antenna pattern disposed on the surface of the dielectric substrate.

[0009] 进一步地,所述谐振金属天线图案包括间距可调式对称设置的左Hilbert分形结构与右Hilbert分形结构,以及长度和/或宽度可调式设置在所述左Hilbert分形结构与右Hilbert分形结构之间的“T”型阻抗匹配结构。 [0009] Further, the resonant metal antenna pattern comprises a pitch adjustable symmetrically disposed left Hilbert fractal structure and the right Hilbert fractal structure, and the length and / or width adjustable disposed on the left Hilbert fractal structure of the right Hilbert fractal structure "T" type between the impedance matching structure.

[0010] 进一步地,所述左Hilbert分形结构与右Hilbert分形结构之间的可调间距为16-25mm。 [0010] Further, the left and right Hilbert fractal structure min adjustable spacing between the Hilbert-shaped structure 16-25mm.

[0011] 进一步地,所述左HiIbert分形结构或右HiIbert分形结构的边长可调范围为10-20mm,所述左Hi Ibert分形结构的凹进部分或右Hi Ibert分形结构的凹进部分的凹进深度可调范围为3-10mm。 [0011] Further, the left edge separation length adjustable range HiIbert structure or a right HiIbert fractal structure of 10-20mm, the recessed portion of the fractal structure of the left or right Hi Ibert Hi Ibert division recessed portion shaped structure the depth of the recess is adjustable in the range of 3-10mm.

[0012] 进一步地,所述“Τ”型阻抗匹配结构的长度可调范围为10_20mm,宽度可调范围为3-8mm。 [0012] Further, the length of the "Τ" type impedance matching structure is adjustable from 10_20mm, the width of the adjustable range of 3-8mm.

[0013] 进一步地,在所述“Τ”型阻抗匹配结构的中间位置,设有用于与芯片模组导电连接的缺口;所述缺口的宽度为l_3mm。 [0013] Further, in the intermediate position of the "Τ" type impedance matching structure, a notch for connection with a conductive chip module; the gap width of l_3mm.

[0014] 进一步地,所述谐振金属天线图案的线宽可调范围为0. 5_2mm。 [0014] Further, the metal antenna pattern resonance line width is adjustable from 0. 5_2mm.

[0015] 进一步地,所述谐振金属天线图案通过银浆印刷在介质基板上。 [0015] Further, the resonant metal antenna pattern on a dielectric substrate by printing silver paste.

[0016] 进一步地,所述介质基板包括高分子材料衬底,以及覆在所述高分子材料衬底上的金属导电层;所述介质基板的厚度为0. 05-0. 6mm,相对介电常数可调范围为2_10 ;所述金属导电层的厚度为13-150um,材质包括铝或铜或银浆。 [0016] Further, the dielectric substrate comprises a polymer material substrate, and a metal layer overlying the conductive polymer material of the substrate; the thickness of the dielectric substrate is 0. 05-0 6mm, relative permittivity. electric constant adjustable from 2_10; thickness of the metal conductive layer 13-150um, the material comprises aluminum or copper or silver paste.

[0017] 进一步地,所述高分子材料衬底的材质包括聚对苯二甲酸乙二醇酯PET或环氧玻璃纤维板FR4或聚酰亚胺酯PI。 [0017] Further, the polymer material of the substrate material include polyethylene terephthalate PET or FR4 epoxy glass fiber or polyimide ester PI.

[0018] 本发明各实施例的UHF RFID电子标签天线,由于包括具有调谐与支撑作用的介质基板,以及设在介质基板上表面的谐振金属天线图案;工作频率范围(850-970MHZ)可以涵盖RFID的主要两个标准范围(欧洲标准860-870MHZ和北美标准910-920MHZ),以实现宽频, 可以同时在北美和欧洲地区使用;从而可以克服现有技术中弯折偶极子阻抗匹配困难与带宽较窄的缺陷,以实现弯折偶极子阻抗匹配容易、带宽较宽与体积小的优点。 [0018] The present invention, each of the UHF RFID tag antenna according to the embodiment, since the dielectric substrate comprising the support having a tuner function, and a resonance in the metal antenna pattern disposed on the surface of the dielectric substrate; operating frequency range (850-970MHZ) can cover RFID the two main standard range (standard 860-870MHZ European and North American standards 910-920MHZ), in order to achieve broadband can be used simultaneously in North America and Europe; thus overcome the prior art folded dipole impedance matching and bandwidth of difficulty narrow defects, to achieve easily folded dipole impedance, wide bandwidth and small size advantages.

[0019] 本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明而了解。 [0019] Other features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or learned by practice of the present invention. 本发明的目的和其他优点可通过在所写的说明书、权利要求书、以及附图中所特别指出的结构来实现和获得。 The objectives and other advantages of the invention may be realized and attained by the written description, claims, and drawings structure particularly pointed out.

[0020] 下面通过附图和实施例,对本发明的技术方案做进一步的详细描述。 [0020] The following drawings and embodiments, detailed description of the further aspect of the present invention.

附图说明 BRIEF DESCRIPTION

[0021] 附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例一起用于解释本发明,并不构成对本发明的限制。 [0021] The accompanying drawings provide a further understanding of the present invention, and constitute part of this specification, the embodiments of the invention, serve to explain the invention, not to limit the present invention. 在附图中: In the drawings:

图ι为根据本发明UHF RFID电子标签天线的立体结构示意图; 图2为根据本发明UHF RFID电子标签天线中谐振金属天线图案的结构示意图; 图3为与本发明UHF RFID电子标签天线相匹配的NXP (30-160欧)芯片模组的天线Sll 图; FIG ι is a schematic diagram of a three-dimensional structure UHF RFID of the present invention is an electronic tag antenna; FIG. 2 is a schematic view of the metal antenna pattern resonator according UHF RFID of the present invention is an electronic tag antenna; FIG. 3 with the UHF RFID tag antenna of the present invention matches NXP (30-160 ohms) Sll FIG antenna chip module;

图4为与本发明UHF RFID电子标签天线相匹配的NXP (30-160欧)芯片模组的实施例的阻抗图。 Impedance view of an embodiment of FIG. 4 is a UHF RFID tag antenna of the present invention matches NXP (30-160 ohms) of the chip module. [0022] 结合附图,本发明实施例中附图标记如下: [0022] conjunction with the accompanying drawings, embodiments of the present invention illustrated in the drawings are labeled as follows:

1-介质基板;2-左Hilbert分形结构;3-左Hilbert分形结构的凹进部分;4- “T”型阻抗匹配结构;5-右Hilbert分形结构;6-金属导电层。 1- dielectric substrate; 2- left Hilbert fractal structure; 3- Hilbert points left recessed portion shaped structure; 4- "T" type impedance matching structure; 5- Right Hilbert fractal structure; 6- metallic conductive layer.

具体实施方式 Detailed ways

[0023] 以下结合附图对本发明的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本发明,并不用于限定本发明。 [0023] Hereinafter, the preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0024] 根据本发明实施例,如图1-图4所示,提供了一种UHF RFID电子标签天线。 [0024] According to the present invention, as shown in FIG. 1- 4, a UHF RFID tag antenna.

[0025] 如图1和图2所示,本实施例包括具有调谐与支撑作用的介质基板1,以及设在介质基板1上表面的谐振金属天线图案;谐振金属天线图案包括间距可调式对称设置的左Hi Ibert分形结构2与右Hi Ibert分形结构5,以及长度和/或宽度可调式设置在左Hi Ibert 分形结构2与右Hilbert分形结构5之间的“T”型阻抗匹配结构4。 [0025] FIGS. 1 and 2, the present one, and a resonance in the metal antenna pattern disposed on the surface of the dielectric substrate 1 of the embodiment comprises a dielectric substrate having a supporting role in tuning the embodiment; resonant metal antenna pattern comprises adjustable pitch arranged symmetrically "T" type matching structure left Hi Ibert fractal structure 2 and the right Hi Ibert fractal structure 5, and the length and / or width adjustable is disposed between the left Hi Ibert fractal structure 2 and fractal 5Right Hilbert-4.

[0026] 这里,T型匹配结构主要用来调整UHF RFID电子标签天线的阻抗,尤其能大幅度增加UHF RFID电子标签天线的虚部,调整的幅度与其所围的面积有关,面积越大,天线的阻抗越大;反之,天线的阻抗越小。 [0026] Here, T-type structure is mainly used to adjust the impedance matching UHF RFID tag antenna, in particular, can greatly increase the imaginary part of the UHF RFID tag antenna, and the adjustment is related to the area of ​​its circumference, the larger the area, the antennas greater impedance; conversely, the smaller the impedance of the antenna.

[0027] 在上述实施例中,上述谐振金属天线图案的线宽可调范围为0. 5_2mm,谐振金属天线图案通过银浆印刷在介质基板1上;介质基板1的厚度为0. 05-0. 6mm,相对介电常数可调范围为2-10 ;介质基板1包括高分子材料衬底,以及覆在高分子材料衬底上的金属导电层6 ;所述金属导电层6的厚度为13-150um,材质包括铝或铜或银浆;高分子材料衬底的材质包括聚对苯二甲酸乙二醇酯PET或环氧玻璃纤维板FR4或聚酰亚胺酯PI。 [0027] In the above embodiment, the line width of the adjustable range of the resonance of the antenna metal pattern is 0. 5_2mm, resonant metal antenna pattern by printing a silver paste dielectric substrate 1; the thickness of the dielectric substrate 1 0. 05-0 . 6mm, relative dielectric constant is adjustable from 2-10; dielectric substrate comprises a polymeric material substrate, and a metal conductive layer 6 on a polymer material overlying the substrate; thickness of the metal conductive layer 6 is 13 -150um, the material comprises aluminum or silver or copper; polymer material of the substrate material include polyethylene terephthalate PET or FR4 epoxy glass fiber or polyimide ester PI.

[0028] 在上述实施例中,左Hilbert分形结构2与右Hilbert分形结构5之间的可调间距为16-25mm,左Hilbert分形结构2或右Hilbert分形结构5的边长可调范围为10_20mm, 左Hilbert分形结构的凹进部分3或右Hilbert分形结构的凹进部分的凹进深度可调范围为3-10mmo [0028] In the above embodiment, the left Hilbert fractal structure 2 and the adjustable spacing between the right Hilbert fractal structure 5 is 16-25mm, Hilbert fractal structure of the left side or the right length of 2 Hilbert fractal structure 5 is adjustable from 10_20mm , Hilbert fractal structure left recessed portion 3 or the depth of the recess portion recessed right adjustable range Hilbert fractal structure is 3-10mmo

[0029] 在上述实施例中,“Τ”型阻抗匹配结构4的长度可调范围为10_20mm,宽度可调范围为3-8mm,可以使得该UHF RFID电子标签天线的阻抗能够匹配常用的芯片模组(一般实部在80欧以下,虚部在220欧以下);在“T”型阻抗匹配结构4的中间位置,设有用于与芯片模组(如图3与图4所示的NXP (30-160欧)芯片模组)导电连接(可以通过导电胶连接、 锡膏焊接或机械铆接)的缺口,缺口的宽度范围为l_3mm (—般在2mm左右)。 [0029] In the above embodiment, the length "Τ" type impedance matching structure 4 adjustable range 10_20mm, adjustable width in the range of 3-8mm, may be such that the impedance of the UHF RFID tag antenna can be matched die mold used group (typically the following solid portion 80 Euro, 220 Euro less imaginary part); in the intermediate position "T" type matching structure 4, provided with a chip module (FIG. 3 and FIG. 4 shows NXP ( European cutout 30-160) chip module) electrically conductive connection (may be connected by a conductive adhesive, welding or mechanical riveting paste), the gap width in the range l_3mm (- generally about 2mm).

[0030] 在上述实施例中,UHF RFID电子标签天线的谐振频率(应适用于UHF频段),主要是由左Hilbert分形结构2与右Hilbert分形结构5的边长、左Hilbert分形结构的凹进部分3或右Hilbert分形结构的凹进部分的凹进深度、介质基板1的介电常数及厚度和介质基板11的介电常数及其厚度决定;左Hilbert分形结构2与右Hilbert分形结构5的边长越大,左Hilbert分形结构的凹进部分3或右Hilbert分形结构的凹进部分的凹进深度越深,介质基材的介电常数和厚度越大,谐振频率越少;反之谐振频率越大。 [0030] In the above embodiment, the resonant frequency UHF RFID tag antenna (to be applied to the UHF band), mainly composed of 2 with a side length of a right Hilbert fractal structure 5, the recess left Hilbert fractal structure left Hilbert fractal structure depth of the recess portion 3 a recessed portion or a right Hilbert fractal structure, dielectric constant and thickness and dielectric constant of the dielectric substrate 11 and the thickness of the dielectric substrate 1 is determined; Hilbert fractal structure 2 left and right Hilbert fractal structure 5 side length of the larger, left recessed portion Hilbert fractal structure 3 or depth of the recess portion recessed deeper right Hilbert fractal structure, the larger the dielectric constant and thickness of the dielectric substrate, the resonant frequency of the less; resonance frequency and vice versa greater.

[0031] 上述实施例的UHF RFID电子标签天线,是基于带有T型匹配网络的分形结构的天线,引入“T”型阻抗匹配结构4,便于实现UHF RFID电子标签天线与芯片模组的匹配,实部可调范围为1-150欧,虚部可调范围为H80欧;由于采用Hilbert分形结构,总体尺寸在56mm* 18mm附近,有利于减少UHF RFID电子标签天线的整体尺寸,实现小型化;总之,该UHFRFID电子标签天线,具有结构简单、容易加工、成本低、小型化与宽频带等特点。 [0031] UHF RFID tag antenna of the embodiment described above, the antenna is based on a fractal structure with T-type matching network, the introduction of a "T" 4 impedance matching structure, easy to implement matching UHF RFID tag antenna and an electronic chip module , the real part of the European adjustable range 1 to 150, adjustable from the imaginary part of the European H80; as a Hilbert fractal structure, the overall size of around 56mm * 18mm, helps to reduce the overall size of the UHF RFID tag antenna, miniaturization ; In summary, the electronic tag UHFRFID antenna having a simple structure, easy processing, low cost, small size and broadband characteristics.

[0032] 综上所述,本发明各实施例的UHF RFID电子标签天线,由于包括具有调谐与支撑作用的介质基板,以及设在介质基板上表面的谐振金属天线图案;工作频率范围(850-970MHZ)可以涵盖RFID的主要两个标准范围(欧洲标准860-870MHZ和北美标准910-920MHZ),以实现宽频,可以同时在北美和欧洲地区使用;从而可以克服现有技术中阻抗匹配性能差、增益低、成本高与带宽小的缺陷,以实现弯折偶极子阻抗匹配容易、带宽较宽与体积小的优点。 [0032] In summary, UHF RFID tag antenna of each embodiment of the present invention, comprising a dielectric substrate having a supporting role in the tuning, resonance and the metal antenna pattern disposed on a surface of the dielectric substrate; operating frequency range (850- 970 MHz) RFID may encompass two major standard range (the North American standard and the European standard 860-870MHZ 910-920MHZ), in order to achieve broadband, can be used simultaneously in North America and Europe; the difference between the impedance matching performance can be overcome in the prior art, low gain, high bandwidth costs and small defects, to achieve easily folded dipole impedance, wide bandwidth and small size advantages.

[0033] 最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明, 尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。 [0033] Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, but the present invention is not intended to limit the present invention. Although the detailed description of the embodiments, those skilled in the art that aspect, each of which can still be described embodiments of the foregoing embodiment may be modified, or some technical features equivalents. 凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 Any modification within the spirit and principle of the present invention, made, equivalent substitutions, improvements, etc., should be included within the scope of the present invention.

Claims (10)

1. 一种UHF RFID电子标签天线,其特征在于,包括具有调谐与支撑作用的介质基板, 以及设在所述介质基板上表面的谐振金属天线图案。 An UHF RFID tag antenna comprising a dielectric substrate having a supporting role in the tuning, resonance and the metal antenna pattern disposed on the surface of the dielectric substrate.
2.根据权利要求1所述的UHF RFID电子标签天线,其特征在于,所述谐振金属天线图案包括间距可调式对称设置的左Hilbert分形结构与右Hilbert分形结构,以及长度和/ 或宽度可调式设置在所述左Hilbert分形结构与右Hilbert分形结构之间的“T”型阻抗匹配结构。 The UHF RFID tag as claimed in claim 1 of the antenna, wherein the antenna pattern comprises a metal resonant adjustable pitch arranged symmetrically left and right Hilbert fractal structure Hilbert fractal structure, and the length and / or width adjustable disposed between the left and right Hilbert fractal structure Hilbert fractal structure of the "T" type matching structure.
3.根据权利要求2所述的UHF RFID电子标签天线,其特征在于,所述左Hilbert分形结构与右Hilbert分形结构之间的可调间距为16-25mm。 According to claim UHF RFID tag antenna of claim 2, wherein said Hilbert min adjustable spacing left between the right-shaped structure Hilbert fractal structure of 16-25mm.
4.根据权利要求2或3所述的UHF RFID电子标签天线,其特征在于,所述左Hilbert 分形结构或右Hilbert分形结构的边长可调范围为10-20mm,所述左Hilbert分形结构的凹进部分或右Hilbert分形结构的凹进部分的凹进深度可调范围为3-10mm。 The UHF RFID tag antenna of claim 2 or claim 3, wherein the partial left side length adjustable range Hilbert structure or a right Hilbert fractal structure is 10-20mm, the left Hilbert fractal structure Hilbert recessed portion or the right portion of the recess-shaped structure divided recess depth adjustable range of 3-10mm.
5.根据权利要求2所述的UHF RFID电子标签天线,其特征在于,所述“T”型阻抗匹配结构的长度可调范围为10-20mm,宽度可调范围为3_8mm。 The UHF RFID tag antenna according to claim 2, characterized in that the length of the "T" type configuration of the adjustable impedance range 10-20mm, width adjustable range 3_8mm.
6.根据权利要求5所述的UHF RFID电子标签天线,其特征在于,在所述“T”型阻抗匹配结构的中间位置,设有用于与芯片模组导电连接的缺口;所述缺口的宽度为l_3mm。 The UHF RFID tag antenna according to claim 5, wherein, in the intermediate position of the "T" type matching structure, a notch for the chip module and electrically conductive connection; the gap width as l_3mm.
7.根据权利要求1所述的UHF RFID电子标签天线,其特征在于,所述谐振金属天线图案的线宽可调范围为0. 5-2mm。 The UHF RFID tag antenna according to claim 1, wherein said resonance line width of the adjustable range of the metal antenna pattern is 0. 5-2mm.
8.根据权利要求1所述的UHF RFID电子标签天线,其特征在于,所述谐振金属天线图案通过银浆印刷在介质基板上。 8. The UHF RFID tag as claimed in claim 1, said antenna, wherein said resonant metal antenna pattern on a dielectric substrate by printing a silver paste.
9.根据权利要求1所述的UHF RFID电子标签天线,其特征在于,所述介质基板包括高分子材料衬底,以及覆在所述高分子材料衬底上的金属导电层;所述介质基板的厚度为0. 05-0. 6mm,相对介电常数可调范围为2_10 ;所述金属导电层的厚度为13_150um,材质包括铝或铜或银浆。 According to claim UHF RFID tag antenna of claim 1, wherein said dielectric substrate comprises a polymer material substrate, and a metal layer overlying the conductive polymer material of the substrate; said dielectric substrate thickness of 0. 05-0 6mm, relative dielectric constant is adjustable from 2_10; thickness of the metal conductive layer 13_150um, the material comprises aluminum or copper or silver paste.
10.根据权利要求9所述的UHF RFID电子标签天线,其特征在于,所述高分子材料衬底的材质包括聚对苯二甲酸乙二醇酯PET或环氧玻璃纤维板FR4或聚酰亚胺酯PI。 10. UHF RFID tag antenna according to claim 9, wherein said polymeric material of the substrate material include polyethylene terephthalate PET or FR4 epoxy glass fiber or polyimide ester PI.
CN2011103256355A 2011-10-24 2011-10-24 UHF (ultra high frequency) RFID (radio frequency identification device) electronic label antenna CN102509872A (en)

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