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CN102938501B - Broadband bidirectional microstrip antenna - Google Patents

Broadband bidirectional microstrip antenna Download PDF

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Publication number
CN102938501B
CN102938501B CN 201210528788 CN201210528788A CN102938501B CN 102938501 B CN102938501 B CN 102938501B CN 201210528788 CN201210528788 CN 201210528788 CN 201210528788 A CN201210528788 A CN 201210528788A CN 102938501 B CN102938501 B CN 102938501B
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broadband
bidirectional
microstrip
antenna
broadband bidirectional
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CN 201210528788
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CN102938501A (en )
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李伟文
陈杰良
游佰强
周建华
李海雄
陈慕雄
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厦门大学
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Abstract

宽带双向微带天线,涉及一种微带天线。 Two-way broadband microstrip antenna, to a microstrip antenna. 设有双面敷铜介质基板,在基板正面上印制有带两个相对中心位置反对称L形槽的平行四边形结构振子;基板反面上全部敷铜。 The dielectric substrate is provided with a double-sided copper-clad, printed with the center position with two opposite parallelogram antisymmetric transducers L-shaped groove on the front surface of the substrate; the substrate on the reverse side of all copper. 在正面上,平行四边形的上下边分别与基板的上下边平行,且平行四边形居中放置在基板上。 On the front side, upper and lower sides of the parallelogram are parallel with the upper and lower sides of the substrate, and a parallelogram centrally placed on the substrate. 两个L形槽相对于中心点反方向对称放置并分别刻蚀至平行四边形的上下两边,L形槽的其中一臂与平行四边形的上下边垂直,另外一个臂与平行四边形的上下边平行。 Two L-shaped grooves in the opposite direction with respect to the center point and are disposed symmetrically on both sides is etched down to a parallelogram, wherein the upper arm and the lower parallelogram vertical L-shaped slot, the other arm of the parallelogram parallel to the upper and lower sides. 反面全部敷铜作为接地面。 All copper as a negative ground. 从正面平行四边形的中心位置钻一个通孔至反面,用一个50Ω的同轴线接头通过通孔从反面对平行四边形振子进行馈电。 From the front center position of the parallelogram drilled a through hole to the back, with a 50Ω coaxial connector is fed from the reverse face of the transducer parallelogram through the through hole. 具有双向特性、宽频带、低剖面、增益高、辐射效率高、结构简单。 Has a bidirectional characteristic, broadband, low profile, high-gain, high radiation efficiency and simple structure.

Description

宽带双向微带天线 Two-way broadband microstrip antenna

技术领域 FIELD

[0001] 本发明涉及一种微带天线,尤其是涉及一种可用于移动通信直放站的DCS1800通信协议,在平行四边形振子体开槽的宽带双向微带天线。 [0001] The present invention relates to a microstrip antenna, in particular, it relates to a communication protocol for DCS1800 mobile communications repeater of the transducer body parallelogram slotted way broadband microstrip antenna.

背景技术 Background technique

[0002] 直放站是目前移动通信系统中通常采用的,用于提高移动通信覆盖广度和通信容量的设备。 [0002] Repeater mobile communication system is commonly used for improving coverage of the mobile communication device and the communication capacity of the breadth. 直放站通常应用在一些特殊应用场景,如窒内走廊、狭窄街道、隧道、高速公路,在这些场合中,一般要求直放站天线应具有:双向辐射、宽频带、高增益特性。 Repeaters are commonly used in some special scenarios, such as in the smothering corridors, narrow streets, tunnels, highways, on these occasions, the general requirements repeater antenna should have: two-way radiation, broad band, high gain characteristics. 同时,为了进一步减小天线设备的体积,要求天线要具有低剖面特性。 Meanwhile, in order to further reduce the volume of the antenna device, the antenna requires to have a low profile characteristics.

[0003]目前,已经有部分的研究人员做过关于具有双向辐射特性的天线的研究,提出了多种实现双向特性的天线结构。 [0003] Currently, the researchers are already part of the research done on two-way antenna radiation characteristics of the proposed antenna structure more two-way properties. 常见的结构有:平面阵列天线和两个背靠背定向天线[1~3]。 Common structure: planar array antenna and two back to back directional antennas [1-3]. LongshengLiu等人采用六个折合偶极子共线组阵,在两个端射方向实现了约9.05dBi增益。 Et al using six LongshengLiu folded dipole collinear array groups, to achieve a gain of approximately two 9.05dBi endfire directions. 但阵列天线馈电结构复杂,天线面积较大[1]。 However, the array antenna feed complicated structure, larger antenna [1]. X.Li, L.Yang, S.-X.Gong等人利用偶极子天线组成阵列实现了可工作在2.4/5.8GHz的双频双向天线,在2.4GHz和5.8GHz频段上,天线在两端射方向上的方向系数分别达到4.5〜5.9dB和6.1〜8.9dB[2]。 X.Li, L.Yang, S.-X.Gong et al using dipole array antennas to achieve a bidirectional antenna may operate in dual-band 2.4 / 5.8GHz, and 2.4GHz and 5.8GHz frequency band in the antenna in two endfire direction coefficients respectively 4.5~5.9dB direction and 6.1~8.9dB [2]. 也有相关的文献提出了利用单个天线元实现双向辐射特性。 The relevant literature have proposed the use of a single antenna element bidirectional radiation characteristics. 实现双向辐射特性的天线结构有:环形天线、嵌套于接地环的单(双)极天线[4~6]。 Bidirectional radiation characteristics of the antenna structure are: the loop antenna, the ground ring nested single (double) pole antenna [4-6]. 刘聪,薛锋章等人将一个单极子天线嵌套在一个U形的接地面上,实现了天线的双向特性,在所有的工作频点上天线在两个端射方向上的增益都在4.SdBi以上。 Cong, Xue Feng Zhang et a monopole antenna nested in a U-shaped ground contact surface, enables bi-directional characteristics of the antenna, all the working frequency of the antenna gain in both endfire directions are 4 .SdBi above. 但这些利用单个天线元实现双向特性的天线都是采用立体结构,无法实现低剖面。 However, these bidirectional using a single element antenna characteristics of the antenna structure are based on three-dimensional, low profile can not be achieved. H.Arai等人通过H形接地面和曲柄形馈电结构的微带天线,真正实现了双向辐射低剖面天线结构m。 H.Arai et al microstrip antenna ground contact and a crank-shaped configuration by feeding an H-shaped, the bidirectional radiation truly low-profile antenna structure m. 如在两侧添加无源引向贴片,其端射增益可达到5.71dBi[8]。 As both sides of the passive add lead patch, which can reach the end of the exit gain 5.71dBi [8]. 但该结构接地面需要H形开口,应用时要求离物理地面有一定高度。 However, the need for an H-shaped structure open ground, the ground requires the physical application from a certain height.

[0004] 参考文献: [0004] References:

[0005] [I]Longsheng LiujZhijun Zhang, Zijian Tianjet al.A bidirectional endfirearray with compactantenna elements for coal/mine tunnel communication[J].1EEEAntennas and WirelessPropagation Letters, 2012,11:342-345。 [0005] [I] Longsheng LiujZhijun Zhang, Zijian Tianjet al.A bidirectional endfirearray with compactantenna elements for coal / mine tunnel communication [J] .1EEEAntennas and WirelessPropagation Letters, 2012,11: 342-345.

[0006] [2]X.Li,L Yang, S.-X.Gong, et al.Bidirectional high gain antenna for WLANapplications[J].Progress in Electromagnetics Research Letters,2009,6:99-106。 [0006] [2] X.Li, L Yang, S.-X.Gong, et al.Bidirectional high gain antenna for WLANapplications [J] .Progress in Electromagnetics Research Letters, 2009,6: 99-106.

[0007] [3] J.Zhang, X.-M.Zhang, J.-S.Liuj et al.Dual-band bidirectional high gainantenna for WLAN2.4/5.8GHz applications [J].Electronics Letters, 2009,45(1):6-7。 [0007] [3] J.Zhang, X.-M.Zhang, J.-S.Liuj et al.Dual-band bidirectional high gainantenna for WLAN2.4 / 5.8GHz applications [J] .Electronics Letters, 2009,45 (1): 6-7.

[0008] [4]刘聪,薛锋章.一种用于隧道覆盖的宽频带单极子天线[J].微波学报,2010,26(6): 50-53。 . [0008] [4] Cong, Zhang Xue Feng A wideband monopole antenna for covering tunnels [J] Microwave Journal, 2010,26 (6): 50-53.

[0009] [5] Jordi Solerj Car Ies Puente, Alberto Puert0.A dual-bandbidirectional multilevel monopoleantenna[J].Microwave and Optical TechnologyLetters, 2002,34(6): 445-448。 [0009] [5] Jordi Solerj Car Ies Puente, Alberto Puert0.A dual-bandbidirectional multilevel monopoleantenna [J] .Microwave and Optical TechnologyLetters, 2002,34 (6): 445-448.

[0010] [6 ] K.Chawanonph i thak,C.Phongcharoenpan i ch,S.Kosulvitj etal.Characteristics of an ellipticalring antenna excited by a linear electricprobe [J].1nternational Journal of Electronics, 2007, 94(10): 973-984。 [0010] [6] K.Chawanonph i thak, C.Phongcharoenpan i ch, S.Kosulvitj etal.Characteristics of an ellipticalring antenna excited by a linear electricprobe [J] .1nternational Journal of Electronics, 2007, 94 (10): 973 -984.

[0011] [7] T.Mukaiyama, H.Arai, Y.Ebine.B1-directional notch and crank-shapedantenna [A].AsiaPacific Microwave Conference [C].1997.1:417-420。 [0011] [7] T.Mukaiyama, H.Arai, Y.Ebine.B1-directional notch and crank-shapedantenna [A] .AsiaPacific Microwave Conference [C] .1997.1: 417-420.

[0012] [8]H.Arai, K.Kohzu, T.Mukaiyama.B1-directional notch antenna withparasitic elements fortunnel booster system[A].Antennas and Propagation SocietyInternational Symposium[C].1997.4:2218-2221。 [0012] [8] H.Arai, K.Kohzu, T.Mukaiyama.B1-directional notch antenna withparasitic elements fortunnel booster system [A] .Antennas and Propagation SocietyInternational Symposium [C] .1997.4: 2218-2221.

发明内容 SUMMARY

[0013] 本发明的目的在于提供一种具有双向特性、宽频带、低剖面、增益高、辐射效率高、结构简单的宽带双向微带天线。 [0013] The object of the present invention is to provide a bi-directional characteristic, broadband, low profile, high-gain, high radiation efficiency and simple structure of the two-way wideband microstrip antenna.

[0014] 本发明设有双面敷铜介质基板,在基板正面上印制有带两个相对中心位置反对称L形槽的平行四边形结构振子;基板反面上全部敷铜。 [0014] The present invention is provided with a double-sided copper-clad dielectric substrate is printed with two opposite parallelogram center position antisymmetric transducers L-shaped groove on the front surface of the substrate; the substrate on the reverse side of all copper. 在正面上,平行四边形的上下边分别与基板的上下边平行,且平行四边形居中放置在基板上。 On the front side, upper and lower sides of the parallelogram are parallel with the upper and lower sides of the substrate, and a parallelogram centrally placed on the substrate. 两个L形槽相对于中心点反方向对称放置,两个L形槽分别刻蚀至平行四边形的上下两边,L形槽的其中一臂与平行四边形的上下边垂直,为纵向臂,另外一个臂与平行四边形的上下边平行,为横向臂。 Two L-shaped grooves in the opposite direction with respect to the center point of the symmetrically disposed, respectively, two L-shaped grooves etched into the upper and lower sides of a parallelogram, one of the arms of the parallelogram-shaped groove on the lower side L perpendicular to the longitudinal arm, a further parallelogram arm and upper and lower edges parallel to the transverse arm. 反面全部敷铜作为接地面。 All copper as a negative ground. 从正面平行四边形的中心位置钻一个通孔至反面,用一个50 Ω的同轴线接头通过通孔从反面对平行四边形振子进行馈电。 From the front center position of the parallelogram drilled a through hole to the back, with a 50 Ω coaxial connector from the reverse face through the through hole parallelogram vibrator for feeding.

[0015] 所述基板是F4BK-2双面敷铜介质基板,基板的长度可为110±0.1mm,宽度可为70 ±0.1mm,厚度可为3mm ;敷铜介质基板的相对介电常数ε r可为4.3。 [0015] The substrate is a double-sided copper F4BK-2 of the dielectric substrate, the substrate length may be 110 ± 0.1mm, width may be 70 ± 0.1mm, thickness of 3mm; copper-clad dielectric substrate relative permittivity ε r may be 4.3.

[0016] 所述的平行四边形结构振子的边长可为87.9±0.1mm,宽可为41.8±0.1mm,上下边错开距离可为7.7±0.1mm。 [0016] The side length of the parallelogram transducer to be 87.9 ± 0.1mm, width may be 41.8 ± 0.1mm, the bottom may be shifted from 7.7 ± 0.1mm. 两个形状大小相同的L形槽反对称放置。 Two identical L-shaped grooves symmetric shape and size placed. L形槽的纵向臂长度可为34.5±0.Imm,纵向臂宽度可为2.7±0.Imm,横向臂长度可为4.8±0.Imm,横向臂宽度可为4.1±0.I臟。 The longitudinal arm length L-shaped groove to be 34.5 ± 0.Imm, the longitudinal width of the arm may be 2.7 ± 0.Imm, the transverse arm length may be 4.8 ± 0.Imm, the lateral width of the arm may be 4.1 ± 0.I dirty.

[0017] 与现有的印制直放站天线相比,本发明具有以下突出的优点和显著的效果: [0017] Compared with the conventional printed repeater antennas, the present invention has the following outstanding advantages and significant effect:

[0018] 具有双向辐射特性、宽频带、低剖面、增益高、结构简单、生产成本低。 [0018] having bidirectional radiation characteristics, wide-band, low-profile, high-gain, simple structure, low production cost. 其相对带宽为5.8%两端射方向增益约为4.3dBi,在天线的工作频带内,天线辐射场为具有一定倾角的线极化。 A relative bandwidth of 5.8% at both ends of the direction of the exit gain of about 4.3dBi, within the operating band of the antenna, antenna radiation field with a slope angle of linear polarization.

附图说明 BRIEF DESCRIPTION

[0019] 图1为本发明实施例的结构示意图。 [0019] FIG. 1 is a schematic structure of an embodiment of the present invention.

[0020] 图2为本发明实施例的回波损耗性能图。 [0020] FIG. 2 echo return loss characteristic view of an embodiment of the present invention. 在图2中,横坐标表示频率Frequency (GHz),纵坐标表示馈电端口反射系数S11 (dB),曲线a表示仿真结果simulation ;曲线b表示实测结果measure。 In FIG. 2, the abscissa represents the frequency Frequency (GHz), the ordinate represents a feeding port reflection coefficient S11 (dB), the curve a represents the simulation results Simulation; curve b represents experimental results measure.

[0021] 图3为本发明实施例的在频率为1.79GHz时的yoz面方向图。 [0021] FIG. 3 is a frequency at 1.79GHz yoz surface direction in FIG embodiment of the present invention.

[0022] 图4为本发明实施例的在频率为1.85GHz时的yoz面方向图。 [0022] FIG. 4 is a frequency at 1.85GHz Example yoz surface direction in FIG embodiment of the present invention.

具体实施方式 detailed description

[0023] 以下结合实施例和附图对本发明作进一步说明。 [0023] The following Examples and accompanying drawings further illustrate the present invention. [0024] 参见图1,本发明设有双面敷铜介质基板1,介质基板的正面为平行四边形振子体 [0024] Referring to Figure 1, the present invention is provided with a positive dielectric substrate parallelogram transducer body double-sided copper dielectric substrate

2、L形槽3。 2, L-shaped grooves 3.

[0025] 介质基板I采用普通的F4BK-2双面敷铜电路基板其长为110.0mm±0.1mm,宽为70.0_±0.1mm,厚度为3mm ;敷铜介质基板的相对介电常数ε ^为4.3。 [0025] I use a common dielectric substrate F4BK-2-sided copper-clad circuit substrate which is the length of 110.0mm ± 0.1mm, width 70.0_ ± 0.1mm, thickness 3mm; copper-clad dielectric substrate relative permittivity ε ^ 4.3. 平行四边形振子体2边长为87.9±0.1mm,宽为41.8±0.1mm,上下边错开距离为7.7±0.1mm。 Parallel sides and long rectangular transducer body is 87.9 ± 0.1mm, a width of 41.8 ± 0.1mm, upper and lower offset distance is 7.7 ± 0.1mm. 两个反对称L形槽3的间距为6.8±0.lmm, L形槽的纵向臂长度为34.5±0.Imm,纵向臂宽度为2.7±0.Imm,横向臂长度为4.8±0.1mm,横向臂宽度为4.1±0.lmm。 Two L-shaped grooves 3 antisymmetric pitch is 6.8 ± 0.lmm, arm length L-shaped longitudinal groove is 34.5 ± 0.Imm, a width of the longitudinal arms 2.7 ± 0.Imm, lateral arm length 4.8 ± 0.1mm, the lateral width of the arm 4.1 ± 0.lmm.

[0026] 参见图2,图2给出了本发明实施例的端口反射系数(dB)性能图。 [0026] Referring to Figure 2, Figure 2 shows the port reflection coefficient (dB) of the present invention, the performance of the embodiment of FIG. 从图2可以看出,天线-1OdB的工作带宽范围1.776~1.865GHz,绝对带宽为105MHz,相对带宽约为5.8%。 As it can be seen from Figure 2, the operating bandwidth of the antenna -1OdB range 1.776 ~ 1.865GHz, the absolute bandwidth of 105MHz, the relative bandwidth is about 5.8%.

[0027] 参见图3和4,由图3和4可见,工作频率为1.79GHz和时在yoz平面上,即E面上的方向图,在工作频带内天线近似具有双向辐射特性,最大辐射方向向+ζ轴即辐射元法向偏移。 [0027] Referring to FIGS. 3 and 4, seen in FIG. 3 and 4, when the operating frequency is 1.79GHz and on yoz plane, i.e., a direction E in FIG surface, in the operating band of the antenna having bidirectional radiation characteristics approximate direction of maximum radiation + ζ i.e. the axis normal to the radiating element offset. 在1.79GHz谐振频点,最大辐射方向为与辐射元向成50°夹角的方向,其增益约为 In 1.79GHz resonance frequency, and the maximum radiation direction of the radiating element in a direction 50 ° angle, which gain is about

4.3dBi ;在1.85GHz谐振频点,最大辐射方向与+ζ轴夹角为54。 4.3dBi; resonance frequency at 1.85GHz, the maximum radiation direction of the axis angle of 54 + ζ. ,其增益约为4.3dBi。 A gain of about 4.3dBi.

Claims (5)

  1. 1.宽带双向微带天线,其特征在于设有双面敷铜介质基板,在基板正面上印制有带两个L形槽的平行四边形结构振子,所述两个L形槽相对平行四边形结构振子的中心位置呈反对称;基板反面上全部敷铜;在正面上,平行四边形的上下边分别与基板的上下边平行,且平行四边形居中放置在基板上;两个L形槽分别刻蚀至平行四边形的上下两边,L形槽的其中一臂与平行四边形的上下边垂直,为纵向臂,另一臂与平行四边形的上下边平行,为朝向远离平行四边形中心的横向臂;反面全部敷铜作为接地面;从正面平行四边形的中心位置钻一个通孔至反面,用一个50 Ω的同轴线接头通过通孔从反面对平行四边形振子进行馈电。 1. bidirectional wideband microstrip antenna, comprising a dielectric substrate provided with a double-sided copper-clad, printed on the front substrate has a parallelogram with two transducers of the L-shaped slot, the two L-shaped grooves opposite parallelogram center position transducer was antisymmetric; reverse all copper-clad substrate; on the front, upper and lower sides of the parallelogram are parallel with the upper and lower sides of the substrate, and a parallelogram centrally placed on the substrate; two L-shaped grooves are etched to upper and lower sides of the parallelogram, wherein the upper arm and the lower parallelogram vertical L-shaped groove, a longitudinal arm, with the other arm on the lower side of the parallelogram parallel to the transverse direction away from the center of the parallelogram arm; reverse all copper as the ground; parallelogram from the front center position to drill a hole through the back, with a 50 Ω coaxial connector through the through hole from the reverse face of the transducer parallelogram be fed.
  2. 2.如权利要求1所述的宽带双向微带天线,其特征在于所述基板是F4BK-2双面敷铜介质基板。 2. The bi-directional broadband microstrip antenna according to claim 1, wherein the substrate is F4BK-2-sided copper clad dielectric substrate.
  3. 3.如权利要求2所述的宽带双向微带天线,其特征在于所述基板的长度为110±0.1mm,宽度为70±0.1_,厚度为3mm。 3. The bidirectional broadband microstrip antenna according to claim 2, characterized in that the length of the substrate was 110 ± 0.1mm, a width of 70 ± 0.1_, thickness of 3mm.
  4. 4.如权利要求1所述的宽带双向微带天线,其特征在于所述敷铜介质基板的相对介电常数ε r为4.3。 4. A bidirectional broadband microstrip antenna according to claim 1, wherein said copper cladding relative permittivity ε r of the dielectric substrate was 4.3.
  5. 5.如权利要求1所述的宽带双向微带天线,其特征在于所述L形槽的纵向臂长度为34.5±0.Imm,纵向臂宽度为2.7±0.Imm,横向臂长度为4.8±0.Imm,横向臂宽度为.4.1 + 0.1mnin 5. The bidirectional wideband microstrip antenna according to claim 1, characterized in that the longitudinal arms of the L-shaped slot length of 34.5 ± 0.Imm, a width of the longitudinal arms 2.7 ± 0.Imm, lateral arm length of 4.8 ± 0.Imm, the lateral width of the arm .4.1 + 0.1mnin
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