WO2018121256A9 - 低剖面天线 - Google Patents

低剖面天线 Download PDF

Info

Publication number
WO2018121256A9
WO2018121256A9 PCT/CN2017/115811 CN2017115811W WO2018121256A9 WO 2018121256 A9 WO2018121256 A9 WO 2018121256A9 CN 2017115811 W CN2017115811 W CN 2017115811W WO 2018121256 A9 WO2018121256 A9 WO 2018121256A9
Authority
WO
WIPO (PCT)
Prior art keywords
plate waveguide
parallel plate
low profile
profile antenna
waveguide
Prior art date
Application number
PCT/CN2017/115811
Other languages
English (en)
French (fr)
Other versions
WO2018121256A1 (zh
Inventor
刘若鹏
季春霖
陈泽喜
崔兰
李波
刘禹杰
李雪
Original Assignee
深圳超级数据链技术有限公司
深圳光启创新技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201611257093.1A external-priority patent/CN108270073A/zh
Priority claimed from CN201611261284.5A external-priority patent/CN108270074A/zh
Priority claimed from CN201611254987.5A external-priority patent/CN108270084A/zh
Priority claimed from CN201611254941.3A external-priority patent/CN108270072A/zh
Priority claimed from CN201710028646.4A external-priority patent/CN108321545A/zh
Application filed by 深圳超级数据链技术有限公司, 深圳光启创新技术有限公司 filed Critical 深圳超级数据链技术有限公司
Publication of WO2018121256A1 publication Critical patent/WO2018121256A1/zh
Publication of WO2018121256A9 publication Critical patent/WO2018121256A9/zh

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/32Adaptation for use in or on road or rail vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support

Definitions

  • the present invention relates to the field of antenna technologies, and in particular to a low profile antenna.
  • the antenna In the wireless communication system, in order to realize flexible and convenient communication means, the antenna needs to have the characteristics of small size, light weight, and full function. In the existing antenna design, in order to achieve beam scanning in both the horizontal and vertical directions, the antenna needs to be able to rotate in both the horizontal direction and the pitch direction; or the antenna itself can be rotated in the pitch direction without using the phased array.
  • Technology to achieve beam scanning As far as the current demand is concerned, there have been many antenna products on the market for the mobile communication (mobile earth station communication) system.
  • the mobile communication technology communicates with satellites anytime and anywhere on mobile carriers such as automobiles, ships, airplanes, and missiles.
  • the antenna is one of the keys to the technology. According to the application requirements of the moving antenna system products, the low profile and easy conformality are the development direction.
  • the existing antenna products for moving through are available in high, medium and low profiles, but the profiles of these moving antenna products are relatively high.
  • the problem of high antenna profile has not yet proposed an effective solution.
  • the present invention proposes a low profile antenna capable of having a lower profile.
  • a low profile antenna comprising: a power split feed portion;
  • the power distribution feeding portion is coupled to the parallel plate waveguide and coupled to the side surface of the parallel plate waveguide; and the slit radiation layer includes a plurality of planar slot waveguides, the slit radiation layer covering the upper plane of the parallel plate waveguide and the parallel plate The upper plane of the waveguide is coupled, wherein the power-feeding portion forms a conversion of the input rectangular waveguide to the parallel-plate waveguide by feeding in parallel or in series; and the parallel-plate waveguide is for feeding the slit radiation layer.
  • the thickness of the lower substrate of the parallel plate waveguide is linearly increased to form an inclined surface inside the parallel plate waveguide
  • the maximum thickness of the lower substrate of the parallel plate waveguide is smaller than the maximum distance between the upper substrate of the parallel plate waveguide and the lower substrate of the parallel plate waveguide
  • the thickness of the lower substrate of the parallel plate waveguide increases linearly in a direction from the first side to the opposite second side
  • the power feeding part is a H-face speaker.
  • the slit radiation layer is a CTS radiation layer.
  • the interior of the parallel plate waveguide is filled with a medium.
  • the medium comprises any one of FR4, F4B, polytetrafluoroethylene and ceramic.
  • the interior of the parallel plate waveguide is air filled.
  • the CTS radiation layer comprises a plurality of lateral branches arranged at equal intervals and parallel to each other to form a planar slot waveguide for radiation.
  • the power split feeding portion comprises: a plurality of cascaded power splitters.
  • the power-feeding portion further includes: a plurality of coupling portions respectively connected between the plurality of last-stage power splitters and the parallel-plate waveguides for using a plurality of the plurality of power splitters The last stage splitter is coupled to the parallel plate waveguide.
  • the plurality of power splitters are all T-shaped power splitters.
  • the cross sections of the plurality of lateral branches are all rectangular.
  • the cross sections of the plurality of lateral branches are all convex.
  • the invention can reduce the profile height of the antenna by using a lower-level parallel plate waveguide and form a slit radiation layer on the top plane of the parallel plate waveguide, thereby having a lower profile; the parallel feed mode is simple in design and the impedance band is wide. It is possible to make the antenna have a wider frequency band.
  • FIG. 1 is a top plan view of a low profile antenna in accordance with a first embodiment of the present invention
  • Figure 2 is a side elevational view of Figure 1;
  • FIG. 3 is a simulation diagram of an E-plane direction of a low profile antenna according to a first embodiment of the present invention
  • FIG. 4 is a side elevational view of a low profile antenna according to a second embodiment of the present invention.
  • FIG. 5 is a simulation diagram of an E-plane direction of a low profile antenna according to a second embodiment of the present invention.
  • Figure 6 is a top plan view of a low profile antenna in accordance with a third embodiment of the present invention.
  • Figure 7 is a side elevational view of the embodiment of Figure 6;
  • Figure 8 is a simulation diagram of the E-plane direction of a low profile antenna according to a third embodiment of the present invention.
  • Figure 9 is a side elevational view of a low profile antenna in accordance with a fourth embodiment of the present invention.
  • Figure 10 is a simulation diagram of the E-plane direction of the low-profile antenna of the embodiment of Figure 9;
  • Figure 11 is a top plan view of a low profile antenna according to a fifth embodiment of the present invention.
  • Figure 12 is a side elevational view of Figure 11 .
  • Fig. 13 is a simulation diagram of the E-plane direction of the low-profile antenna of the embodiment of Fig. 11;
  • a low profile antenna is provided.
  • a low profile antenna includes a power split feed portion 10, a parallel plate waveguide 20 connected to the power split feed portion 10, and a cover over the parallel plate waveguide 20.
  • a planar slit radiating layer 30 wherein the power dividing feeding portion 10 forms a conversion of the input rectangular waveguide 40 to the parallel plate waveguide 20 by parallel feeding; the parallel plate waveguide 20 is for feeding the slit radiating layer 30, the slit radiation Layer 30 includes a plurality of planar slot waveguides.
  • the power split feeding portion 10 is coupled from the side of the parallel plate waveguide 20, and the slit radiating layer 30 is coupled to the upper plane of the parallel plate waveguide 20.
  • the profile height of the antenna can be reduced, thereby having a lower profile; the parallel feed mode is simple in design. And the impedance band is wide, enabling the antenna to have a wider frequency band.
  • the low profile antenna of the present invention may also include other auxiliary portions, for example, a support portion including the parallel plate waveguide 20, a fastening portion of the peripheral structure, an interface conversion portion, and the like; and a material of each portion of the low profile antenna of the present invention and The connection between the two can be appropriately selected.
  • the power feeding portion 10 can be an all-metal machining structure, and can be connected to the parallel plate waveguide 20 by screws, welding or plugging; the gap radiation layer 30 can be bonded by means of glue or the like.
  • the cover is fixedly covered on the parallel plate waveguide 20.
  • the rectangular waveguide is a cavity made of a metal material and having a rectangular cross section and an inner and outer cavity. It can be used to transmit electromagnetic waves with high frequency, and can attenuate high frequency electromagnetic waves during transmission.
  • the presence or absence of electromagnetic wave in the longitudinal field component can be divided into three types: TE wave, TM wave and TEM wave.
  • TE wave, TM wave and TEM wave In the rectangular waveguide, only TE wave and TM wave can be transmitted, and TEM wave cannot be transmitted. Therefore, the conversion of the input rectangular waveguide 40 to the parallel plate waveguide 20 needs to be completed by the power dividing feeding portion 10.
  • the main mode of the rectangular waveguide is a TE 10 mode
  • the power distribution feeding portion 10 converts the TE 10 mode of the rectangular waveguide 40 to the TEM wave of the parallel plate waveguide 20, while the rectangular waveguide 40 passes through the parallel
  • the plate waveguide 20 feeds the slit radiation layer 30, and the slit radiation layer 30 including a plurality of planar slit waveguides radiates the energy of the TEM wave to a designated region.
  • the power split feeding portion 10 includes a plurality of power splitters cascaded in multiple stages.
  • the power divider can be designed as an aliquot structure or a certain proportion of unequal power division structures.
  • the plurality of power splitters are all T-shaped splitters 11 to achieve a one-two function.
  • the output of the previous stage T-shaped splitter 11 is connected to the input of the latter stage T-shaped splitter 11.
  • FIG. 1 shows a case where the power-dividing power feeding portion 10 includes a plurality of T-shaped power splitters 11 that are cascaded in four stages. In practical applications, the specific number of cascades of power splitters can be set as needed.
  • the tuning manner at the branch of the power divider may be a structure using a screw, a rectangular groove, a semi-circular groove, a triangular groove, or the like.
  • the power-feeding portion 10 further includes: a plurality of coupling portions 12 respectively connected to the plurality of last-stage power splitters and parallel plate waveguides 20 for A plurality of last stage cascaded power splitters are coupled to the parallel plate waveguide 20.
  • the slit radiation layer is a CTS (Continuous Transverse Stub) radiation layer.
  • the CTS radiation layer includes a plurality of lateral branches 31 arranged at equal intervals and parallel to each other to form a planar slot waveguide 32 for radiation.
  • the CTS radiation layer is provided with a plurality of continuous lateral branches 31 on the parallel plate waveguide 20, wherein the plurality of lateral branches 31 have a rectangular cross section.
  • the plurality of lateral branches 31 cause the TEM waves propagating along the longitudinal direction to be blocked by the continuous lateral branches 31, and induce a displacement current between the lateral branches 31, the displacement current exciting an equivalent electric field around the lateral branches 31, And radiate electromagnetic fields.
  • the CTS antenna has the advantages of light weight, simple structure, high radiation efficiency, and low cost. Adjusting the position distribution of the lateral branches 31 can control the beam width and the sidelobe level of the low profile antenna of the present invention.
  • the interior of the parallel plate waveguide 20 may be filled with air.
  • the use of a dielectric-filled, air-filled parallel-plate waveguide can have a lower transmission loss and can reduce the overall weight of the antenna.
  • the interior of the parallel plate waveguide 20 may be filled with a medium.
  • the medium for filling may include any one of low loss dielectric materials such as FR4, F4B, polytetrafluoroethylene, and ceramic.
  • FIG. 3 it is a simulation diagram of the E-plane direction of the low-profile antenna according to the embodiment of the present invention, wherein the abscissa Theta represents the azimuth angle (deg), and the ordinate Gain represents the gain.
  • the low profile antenna of the present invention has good directivity, and the coordinates of the m-point of the main lobe are (0, 31.5453), that is, the gain can reach 31.5 dB.
  • the low profile antenna of the present invention can be applied to a moving intermediate system.
  • the profile height of the antenna can be reduced, thereby having more Low profile, as can be seen from the cross-sectional structure, the overall height of the antenna is only one layer higher than that of the planar waveguide, and the whole product is a nearly planar structure; the parallel feeding mode is simple in design and the impedance band is wide, enabling the antenna Has a wider frequency band.
  • the difference in structure of the first embodiment is that the thickness of the lower substrate 22 of the parallel plate waveguide 20 is linearly increased to be in the parallel plate waveguide 20.
  • the inside forms an inclined surface.
  • the maximum thickness of the lower substrate of the parallel plate waveguide is smaller than the maximum distance between the upper substrate of the parallel plate waveguide and the lower substrate of the parallel plate waveguide.
  • the radiation effect shown in the simulation diagram of the E-plane direction as shown in Fig. 5 can be obtained.
  • the structure is as shown in Figs.
  • a power split feeding structure different from the first embodiment comprising: a power split feeding portion 10, a parallel plate waveguide 20 connected to the power dividing feeding portion 10, and an overlay The slit radiating layer 30 above the parallel plate waveguide 20; wherein the output end of the power dividing feeding portion 10 is the same as the width of the input end of the parallel plate waveguide 20, and the power dividing feeding portion 10 is coupledly fed from the side of the parallel plate waveguide 20.
  • the power split feeding portion 10 forms a conversion of the input rectangular waveguide 40 to the parallel plate waveguide 20 by means of series feeding; the parallel plate waveguide 20 is for feeding the slit radiation layer 30.
  • the power-feeding portion 10 includes a plurality of spacer elements 11a of equal spacing distance to form a plurality of power-dividing output ports 12a connected in series and isolated from each other.
  • the plurality of isolation elements 11a are each a T-shaped structure.
  • the spacer unit 11a elements are located at the edges of the power split feeding portion 10, adjacent to the parallel plate waveguides 20.
  • the lateral "one" branch of the T-shaped structure is adjacent to the side of the rectangular waveguide 40, and the lateral " ⁇ " branch of the T-shaped structure is directed to the parallel plate waveguide 20.
  • the power-feeding portion 10 further includes a plurality of tuning elements correspondingly disposed in the plurality of power-dividing output ports for suppressing output interference of the power-dividing power-feeding portion 10.
  • the tuning element includes a metal post 13 disposed on a central axis of the output port 12a.
  • the metal posts 13 are located at the midpoint of the transverse "one" branch line of two adjacent T-shaped structures.
  • the gap radiation layer is CTS (Continue Transverse Stub, continuous transverse section) radiation layer.
  • the CTS radiation layer includes a plurality of lateral branches 31 arranged at equal intervals and parallel to each other to form a planar slot waveguide 32 for radiation.
  • the CTS radiation layer is provided with a plurality of continuous lateral branches 31 on the parallel plate waveguide 20, wherein the plurality of lateral branches 31 have a cross-sectional shape.
  • the plurality of lateral branches 31 cause the TEM waves propagating along the longitudinal direction to be blocked by the continuous lateral branches 31, and induce a displacement current between the lateral branches 31, the displacement current exciting an equivalent electric field around the lateral branches 31, And radiate electromagnetic fields.
  • the CTS antenna has the advantages of light weight, simple structure, high radiation efficiency, and low cost. Adjusting the position distribution of the lateral branches 31 can control the beam width and the sidelobe level of the low profile antenna of the present invention.
  • the radiation effect of the simulation map in the E-plane direction of Fig. 8 can be obtained.
  • an inclined surface is formed inside the parallel plate waveguide 20 on the basis of the third embodiment. As shown in Figure 9.
  • the direction of the lower substrate 22 of the parallel plate waveguide 20 in the direction from the side of the parallel plate waveguide 20 coupled to the power-feeding portion 10 to the other side opposite thereto The thickness is linearly increased to form an inclined surface inside the parallel plate waveguide 20.
  • the maximum thickness of the lower substrate 22 of the parallel plate waveguide 20 should be smaller than the maximum distance between the upper substrate 21 of the parallel plate waveguide 20 and the lower substrate 22 of the parallel plate waveguide 20.
  • the radiation effect of the simulation map of the E-plane direction as shown in Fig. 10 can be obtained.
  • a H-face speaker is provided as the power distribution feeding portion 10, that is, the low-profile antenna includes: a H-face speaker feeding portion, and a parallel plate waveguide 20 connected to an output portion of the H-face speaker feeding portion, wherein the power dividing feeding portion 10 is connected to the side of the parallel plate waveguide 20, the low profile antenna further comprising a slotted radiation layer 30 covering the upper surface of the parallel plate waveguide 20; wherein the H-face horn feed portion is used to form the input rectangular waveguide 40 to the parallel plate waveguide Conversion of 20; and parallel plate waveguide 20 for feeding the slit type radiation layer 30, and the thickness of the lower substrate 22 of the parallel plate waveguide 20 linearly increases from the input end to the output end of the electromagnetic wave to form inside the parallel plate waveguide 20. Tilt the surface.
  • the slotted radiating layer 30 includes a plurality of lateral branches 31 arranged at equal intervals and parallel to each other to form a planar slot waveguide 32 for radiation.
  • the H-face horn feeding portion may include: a plurality of isolation elements 11a, the distance between any two adjacent isolation elements 11a of the plurality of isolation elements 11a being equal, and a plurality of adjacent two adjacent isolation elements 11a being formed
  • the output ports 12a are connected in series and isolated from each other, and electromagnetic waves enter the parallel plate waveguide 20 through the output port 12a.
  • the power-feeding portion 10 is a trapezoidal waveguide structure having a smaller width near the rectangular waveguide 40 and a larger width near the parallel-plate waveguide 20.
  • the plurality of isolation elements 11a are each a T-shaped structure.
  • the T-shaped structure is disposed at a connection position of the power dividing feeding portion 10 and the parallel plate waveguide 20, and each T-shaped structure is equally spaced along the connection position of the power dividing feeding portion 10 and the parallel plate waveguide 20, and each T
  • the " ⁇ " portions in the glyph isolation unit 11 are all directed to the parallel plate waveguides 20, and the "one" portions of each of the T-shaped isolation units 11 are located on the same straight line.
  • the H-face horn feeding portion further includes a plurality of metal studs 13 corresponding to the central axes of the plurality of output ports 12a.
  • the metal stub 13 can suppress the generation of higher order modes of electromagnetic waves during transmission.
  • the H-face speaker feeding portion may be an all-metal machined structure, and is connected to the parallel plate waveguide 20 by screws, welding or plugging.
  • the metal studs 13 are disposed on a straight line on which the "one" portion of the T-shaped isolation unit 11 of each of the T-shaped isolation units 11a is located.

Landscapes

  • Waveguide Aerials (AREA)

Abstract

本发明公开了一种低剖面天线,该低剖面天线包括:功分馈电部分;平行板波导,功分馈电部分与平行板波导连接并与平行板波导的侧面耦合;以及缝隙辐射层,包括多个平面缝隙波导,缝隙辐射层覆盖于平行板波导的上平面并与平行板波导的上平面耦合;其中,功分馈电部分通过并联馈电的方式形成输入矩形波导至平行板波导的转换;以及平行板波导用于向缝隙辐射层馈电。本发明通过采用高度较低的平行板波导、并在平行板波导顶部平面上形成缝隙辐射层,能够降低天线的轮廓高度,从而具有更低剖面;并联馈电的方式设计简单且阻抗频带较宽,能够使天线具有较宽频带。

Description

低剖面天线 技术领域
本发明涉及天线技术领域,具体来说,涉及一种低剖面天线。
背景技术
在无线通信系统中,为了实现灵活、方便的通信手段,需要天线具有体积小、重量轻、功能全的特点。在现有的天线设计中,为了实现在水平和俯仰方向都进行波束扫描,这就需要天线在水平方向和俯仰方向都能够转动;也可以天线自身的俯仰方向不发生转动,而利用相控阵技术来实现波束扫描。就目前的需求,市场上出现了不少用于动中通(移动中的卫星地面站通信)系统的天线产品。动中通技术是在例如汽车、舰船、飞机、导弹等移动载体上随时随地与卫星通信。而天线是动中通技术的关键之一。根据对动中通系统天线产品的应用需求,低剖面、易共形的是其发展方向。
技术问题
现有的用于动中通的天线产品有高、中、低三种剖面,但是这些动中通天线产品的剖面都比较高。针对相关技术中,天线剖面较高的问题,目前尚未提出有效的解决方案。
技术解决方案
针对相关技术中天线剖面较高的问题,本发明提出一种低剖面天线,能够具有更低剖面。
本发明的技术方案是这样实现的:
根据本发明的一个方面,提供了一种低剖面天线,包括:功分馈电部分;
平行板波导,功分馈电部分与平行板波导连接并与平行板波导的侧面耦合;以及缝隙辐射层,包括多个平面缝隙波导,缝隙辐射层覆盖于平行板波导的上平面并与平行板波导的上平面耦合其中,功分馈电部分通过并联或串联馈电的方式形成输入矩形波导至平行板波导的转换;以及平行板波导用于向缝隙辐射层馈电。
优选的,平行板波导的下基板的厚度线性增加以在平行板波导的内部形成倾斜表面
优选的,所述平行板波导的下基板的最大厚度小于所述平行板波导的上基板与所述平行板波导的下基板之间的最大距离
优选的,所述平行板波导的下基板的所述厚度在由所述第一侧至相对的第二侧的方向上线性增加
优选的,功分馈电部分为H面喇叭。
优选地,缝隙辐射层为CTS辐射层。
优选地,平行板波导的内部为介质填充。
优选地,介质包括:FR4、F4B、聚四氟乙烯和陶瓷之中的任意一种。
优选地,平行板波导的内部为空气填充。
优选地,CTS辐射层包括多个等间距设置且相互平行的横向枝节以形成进行辐射的平面缝隙波导。
优选地,功分馈电部分包括:级联的多个功分器。
优选地,功分馈电部分还包括:多个耦合部分,多个耦合部分分别对应连接于多个最后一级功分器与平行板波导之间,用于将多个功分器中的多个最后一级功分器与平行板波导进行耦合。
优选地,多个功分器均为T形功分器。
优选地,多个横向枝节的截面均为矩形。
优选地,多个横向枝节的截面均为凸字形。
有益效果
本发明通过采用高度较低的平行板波导、并在平行板波导顶部平面上形成缝隙辐射层,能够降低天线的轮廓高度,从而具有更低剖面;并联馈电的方式设计简单且阻抗频带较宽,能够使天线具有较宽频带。
附图说明
图1是根据本发明第一实施例的低剖面天线的俯视示意图;
图2是图1的侧视示意图;
图3是根据本发明第一实施例的低剖面天线的E面方向的仿真图;
图4是本发明第二实施例的低剖面天线的侧视示意图;
图5是根据本发明第二实施例的低剖面天线的E面方向的仿真图;
图6是根据本发明第三实施例的低剖面天线的俯视示意图;
图7是图6实施例的侧视示意图;
图8是根据本发明第三实施例的低剖面天线的E面方向的仿真图;
图9是本发明第四实施例的低剖面天线的侧视示意图;
图10是图9实施例的低剖面天线的E面方向的仿真图;
图11是本发明第五实施例的低剖面天线的俯视示意图;
[根据细则91更正 19.01.2018] 
图12是图11的侧视示意图。
图13是图11实施例的低剖面天线的E面方向的仿真图。
本发明的实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本发明保护的范围。
根据本发明的实施例,提供了一种低剖面天线。
如图1和图2所示,根据本发明实施例的低剖面天线包括:功分馈电部分10、与功分馈电部分10连接的平行板波导20、以及覆盖于平行板波导20的上平面的缝隙辐射层30;其中,功分馈电部分10通过并联馈电的方式形成输入矩形波导40至平行板波导20的转换;平行板波导20用于向缝隙辐射层30馈电,缝隙辐射层30包括多个平面缝隙波导。功分馈电部分10从平行板波导20的侧面耦合,缝隙辐射层30则与平行板波导20的上平面耦合。
上述技术方案,通过采用高度较低的平行板波导20、并在平行板波导20顶部平面上形成缝隙辐射层30,能够降低天线的轮廓高度,从而具有更低剖面;并联馈电的方式设计简单且阻抗频带较宽,能够使天线具有较宽频带。
本发明的低剖面天线也可以包括其他辅助部分,例如可以包括平行板波导20的支撑部分、外围结构的紧固部分以及接口转换部分等;本发明的低剖面天线的各部分的材质及其之间的连接可以适当选择,例如功分馈电部分10可以为全金属机械加工结构,通过螺钉、焊接或插接等方式与平行板波导20进行连接;缝隙辐射层30可通过胶粘结等方式固定覆盖在平行板波导20上。
矩形波导是用金属材料制成的截面为矩形、内空外封闭的腔体,可以用于传输频率很高的电磁波信号,能够使高频的电磁波在传输过程中的衰减很小。电磁波按纵向场分量的有无可以分为TE波、TM波和TEM波三种,矩形波导中只能传输TE波和TM波、而不能传输TEM波。因此需要通过功分馈电部分10完成输入矩形波导40至平行板波导20的转换。
具体的,在实际工程应用中,矩形波导的主模是TE 10模,功分馈电部分10实现矩形波导40的TE 10模到平行板波导20的TEM波的转换,同时矩形波导40通过平行板波导20向缝隙辐射层30馈电,进而包括多个平面缝隙波导的缝隙辐射层30将TEM波的能量辐射到指定的区域。
根据本发明的一个实施例,功分馈电部分10包括:多级级联的多个功分器。根据实际需求,可将功分器设计成等分结构或一定比例的不等功分结构。
优选地,多个功分器均为T形功分器11,实现一分二的功能。前一级T形功分器11的输出端连接至后一级T形功分器11的输入端。图1示出的是功分馈电部分10包括四级级联的多个T形功分器11的情况,实际应用中,可根据需要设置功分器多级级联的具体数量。功分器的分支处的调谐方式可以是采用螺钉、矩形凹槽、半圆形凹槽、三角形凹槽等结构。
根据本发明的一个实施例,功分馈电部分10还包括:多个耦合部分12,多个耦合部分12分别对应连接于多个最后一级功分器与平行板波导之间20,用于将多个最后一级级联的功分器与平行板波导20进行耦合。
根据本发明的一个实施例,缝隙辐射层为CTS(Continue Transverse Stub,连续横向枝节) 辐射层。进一步地,CTS辐射层包括多个等间距设置且相互平行的横向枝节31以形成进行辐射的平面缝隙波导32。CTS辐射层通过在平行板波导20上设置连续的多个横向枝节31,其中多个横向枝节31的截面均为矩形。多个横向枝节31使得沿着纵向传播的TEM 波被连续的横向枝节31所阻断,并在横向枝节31之间感应出位移电流,该位移电流在横向枝节31周围激励起等效的电场,并辐射电磁场。CTS天线具有重量轻、结构简单、辐射效率高以及成本低等优点,调整横向枝节31的位置分布可以对本发明的低剖面天线的波束宽度和副瓣电平进行控制。
根据本发明的一个实施例,平行板波导20的内部可以为空气填充。使用无介质填充即空气填充的平行板波导,能够具有较低的传输损耗,能够减轻天线的整体重量。
根据本发明的一个实施例,平行板波导20的内部可以为介质填充。
进一步地,用于填充的介质可以包括FR4、F4B、聚四氟乙烯和陶瓷等低损耗介质材料之中的任意一种。
如图3所示,是根据本发明实施例的低剖面天线的E面方向的仿真图,其中横坐标Theta表示方位角的角度(deg),纵坐标Gain表示增益。从图3中可以看出本发明的低剖面天线辐射的方向性很好,主瓣顶点m点的坐标为(0,31.5453),即增益可以达到31.5dB。本发明的低剖面天线可以应用于动中通系统中。
综上所述,借助于本发明的上述技术方案,通过采用高度较低的平行板波导20、并在平行板波导20顶部平面上形成缝隙辐射层30,能够降低天线的轮廓高度,从而具有更低剖面,从剖面结构可以看出,整个天线的轮廓高度仅比平面波导高出一层辐射层,整个产品成近平面的结构;并联馈电的方式设计简单且阻抗频带较宽,能够使天线具有较宽频带。
在本发明的第二个实施方式中,如图4所示,其结构相比于第一个实施例的区别是:平行板波导20的下基板22的厚度线性增加以在平行板波导20的内部形成倾斜表面。平行板波导的下基板的最大厚度小于平行板波导的上基板与平行板波导的下基板之间的最大距离。通过在平行板波导20的内部形成倾斜表面,使本发明的低剖面天线在扫面角度改变时,降低增益衰减的幅度。
采用本发明的第二个实施方式的结构,可以获得如图5所示的E面方向的仿真图所示的辐射效果。
本发明的第三个实施例中,结构如图6,7所示。在该实施例中,采用了不同于第一实施例的功分馈电结构,其低剖面天线包括:功分馈电部分10、与功分馈电部分10连接的平行板波导20、以及覆盖于平行板波导20上方的缝隙辐射层30;其中,功分馈电部分10的输出端与平行板波导20输入端的宽度相同,功分馈电部分10从平行板波导20的侧边耦合馈入。功分馈电部分10通过串联馈电的方式形成输入矩形波导40至平行板波导20的转换;平行板波导20用于向缝隙辐射层30馈电。
功分馈电部分10包括:多个间隔距离相等的隔离元件11a以形成多个串联连接且相互隔离的功分输出端口12a。
多个隔离元件11a均为T字形结构。间隔单元11a元件位于功分馈电部分10的边缘处,与平行板波导20相互紧邻。T字形结构的横向“一”字枝节靠近矩形波导40一侧,T字形结构的横向“丨”字枝节指向平行板波导20。
功分馈电部分10还包括:多个调谐元件,对应设置于多个功分输出端口中,用于抑制功分馈电部分10的输出干扰。
调谐元件包括设置于输出端口12a中心轴线上的金属柱13。较佳的,金属柱13位于两个相邻的T字形结构的横向“一”字枝节连线中点上。
缝隙辐射层为CTS(Continue Transverse Stub,连续横向枝节)辐射层。进一步地,CTS辐射层包括多个等间距设置且相互平行的横向枝节31以形成进行辐射的平面缝隙波导32。CTS辐射层通过在平行板波导20上设置连续的多个横向枝节31,其中多个横向枝节31的截面均为凸字形。多个横向枝节31使得沿着纵向传播的TEM 波被连续的横向枝节31所阻断,并在横向枝节31之间感应出位移电流,该位移电流在横向枝节31周围激励起等效的电场,并辐射电磁场。CTS天线具有重量轻、结构简单、辐射效率高以及成本低等优点,调整横向枝节31的位置分布可以对本发明的低剖面天线的波束宽度和副瓣电平进行控制。
采用第三实施例的结构,能够获得如图8的E面方向的仿真图的辐射效果。
本发明提供的第四个实施例中,在第三实施例的基础上在平行板波导20的内部形成倾斜表面。如图9所示。
在第三实施例结构的基础上,在从平行板波导20与功分馈电部分10耦合的一侧边向与之相对的另一侧边的方向上,平行板波导20的下基板22的厚度线性增加从而在平行板波导20的内部形成倾斜表面。
平行板波导20的下基板22的最大厚度应小于平行板波导20的上基板21与平行板波导20的下基板22之间的最大距离。通过在平行板波导20的内部形成倾斜表面,使本发明的低剖面天线在扫面角度改变时,降低增益衰减的幅度。
采用第四实施例的结构,能够获得如图10的E面方向的仿真图的辐射效果。
在本发明的第五实施例中,如图11和12所示。提供了使用H面喇叭作为功分馈电部分10,即低剖面天线包括:H面喇叭馈电部分、与H面喇叭馈电部分的输出部分连接的平行板波导20,其中功分馈电部分10与平行板波导20的侧面相连接,低剖面天线还包括覆盖于平行板波导20上表面的缝隙式辐射层30;其中,H面喇叭馈电部分用于形成输入矩形波导40至平行板波导20的转换;以及平行板波导20用于向缝隙式辐射层30馈电,且平行板波导20的下基板22的厚度自电磁波的输入端向输出端线性增加以在平行板波导20的内部形成倾斜表面。
缝隙式辐射层30包括多个等间距设置且相互平行的横向枝节31以形成进行辐射的平面缝隙波导32。
H面喇叭馈电部分可以包括:多个隔离元件11a,多个隔离元件11a中任意两个相邻的隔离元件11a之间的距离相等,任意两个相邻的隔离元件11a之间形成多个串联连接且相互隔离的输出端口12a,电磁波通过该输出端口12a进入平行板波导20。在一个可实现的实施例中,该功分馈电部分10为一个梯形导波结构,其靠近矩形波导40的宽度较小,而靠近平行板波导20的宽度较大。
多个隔离元件11a均为T字形结构。T字形结构在功分馈电部分10和平行板波导20的连接位置上进行设置,每个T字形结构沿功分馈电部分10和平行板波导20的连接位置等间隔分布,且每个T字形隔离单元11中的“丨”部分均指向平行板波导20,每个T字形隔离单元11的“一”部分位于同一直线上。
H面喇叭馈电部分还包括:对应设置于多个输出端口12a中心轴线上的多个金属短柱13。金属短柱13可以抑制电磁波在传输过程中产生高次模。H面喇叭馈电部分可以为全金属机械加工结构,通过螺钉、焊接或插接等方式与平行板波导20进行连接
较佳的,金属短柱13设置在各个T字形隔离单元11a的T字形隔离单元11的“一”部分所在的直线上。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,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。

Claims (15)

  1. 一种低剖面天线,其特征在于,包括:
    功分馈电部分;
    平行板波导,所述功分馈电部分与所述平行板波导连接并与平行板波导的侧面耦合;以及
    缝隙辐射层,包括多个平面缝隙波导,所述缝隙辐射层覆盖于平行板波导的上平面并与所述平行板波导的上平面耦合;
    其中,所述功分馈电部分通过并联馈电或者串联馈电的方式形成输入矩形波导至所述平行板波导的转换;以及
    所述平行板波导用于向所述缝隙辐射层馈电。
  2. 根据权利要求1所述的低剖面天线,其特征在于,平行板波导的下基板的厚度线性增加以在平行板波导的内部形成倾斜表面。
  3. 根据权利要求2所述的低剖面天线,其特征在于,所述平行板波导的下基板的最大厚度小于所述平行板波导的上基板与所述平行板波导的下基板之间的最大距离。
  4. 根据权利要求2所述的低剖面天线,其特征在于,所述平行板波导的下基板的所述厚度在由所述第一侧至相对的第二侧的方向上线性增加。
  5. 根据权利要求1所述的低剖面天线,其特征在于,功分馈电部分为H面喇叭。
  6. 根据权利要求1所述的低剖面天线,其特征在于,所述缝隙辐射层为CTS辐射层。
  7. 根据权利要求1所述的低剖面天线,其特征在于,所述平行板波导的内部为介质填充。
  8. 根据权利要求7所述的低剖面天线,其特征在于,所述介质包括:FR4、F4B、聚四氟乙烯和陶瓷之中的任意一种。
  9. 根据权利要求1所述的低剖面天线,其特征在于,所述平行板波导的内部为空气填充。
  10. 根据权利要求1所述的低剖面天线,其特征在于,所述平行板波导的内部为空气填充。
  11. 根据权利要求1所述的低剖面天线,其特征在于,所述功分馈电部分包括:级联的多个功分器。
  12. 根据权利要求11所述的低剖面天线,其特征在于,所述功分馈电部分还包括:
    多个耦合部分,所述多个耦合部分分别对应连接于多个最后一级功分器与所述平行板波导之间,用于将所述多个功分器中的所述多个最后一级功分器与所述平行板波导进行耦合。
  13. 根据权利要求11所述的低剖面天线,其特征在于,所述多个功分器均为T形功分器。
  14. 根据权利要求6所述的低剖面天线,其特征在于,所述多个横向枝节的截面均为矩形。
  15. 根据权利要求6所述的低剖面天线,其特征在于,所述多个横向枝节的截面均为凸字形。
     
PCT/CN2017/115811 2016-12-30 2017-12-13 低剖面天线 WO2018121256A1 (zh)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
CN201611254987.5 2016-12-30
CN201611257093.1 2016-12-30
CN201611257093.1A CN108270073A (zh) 2016-12-30 2016-12-30 低剖面天线
CN201611261284.5 2016-12-30
CN201611261284.5A CN108270074A (zh) 2016-12-30 2016-12-30 低剖面天线
CN201611254987.5A CN108270084A (zh) 2016-12-30 2016-12-30 低剖面天线
CN201611254941.3A CN108270072A (zh) 2016-12-30 2016-12-30 低剖面天线
CN201611254941.3 2016-12-30
CN201710028646.4A CN108321545A (zh) 2017-01-16 2017-01-16 低剖面天线
CN201710028646.4 2017-01-16

Publications (2)

Publication Number Publication Date
WO2018121256A1 WO2018121256A1 (zh) 2018-07-05
WO2018121256A9 true WO2018121256A9 (zh) 2018-08-02

Family

ID=62707886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/115811 WO2018121256A1 (zh) 2016-12-30 2017-12-13 低剖面天线

Country Status (1)

Country Link
WO (1) WO2018121256A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111262024B (zh) * 2020-01-21 2022-05-31 上海交通大学 基于人工表面等离激元结构的低剖面垂直极化端射天线
CN113140917B (zh) * 2021-04-06 2022-07-05 浙江大学 一种多层矩形波导天线馈电结构
CN113206379B (zh) * 2021-04-06 2022-07-05 浙江大学 一种多层悬置带线天线馈电结构
CN114361787B (zh) * 2021-04-22 2023-05-23 成都星达众合科技有限公司 基于3d正交并馈网络的双频段双极化cts天线

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201378627Y (zh) * 2009-03-26 2010-01-06 北京华大智宝电子系统有限公司 一种能实现波束赋形的新型平面雷达天线
CN103414030B (zh) * 2013-07-18 2015-08-19 北京遥测技术研究所 一种宽频带低剖面平板缝隙阵列天线
CN103414027B (zh) * 2013-07-18 2015-08-19 北京遥测技术研究所 一种宽频带单脉冲平板缝隙阵列天线
CN104701603A (zh) * 2014-10-30 2015-06-10 庄昆杰 一种超宽带小型化轻薄型双极化阵列天线
CN104505586B (zh) * 2014-12-12 2017-07-25 上海大学 一种双频平面印刷三角缝隙阵列天线
CN106025560A (zh) * 2016-07-08 2016-10-12 西安电子科技大学 基于ebg结构的低剖面超宽带圆极化天线

Also Published As

Publication number Publication date
WO2018121256A1 (zh) 2018-07-05

Similar Documents

Publication Publication Date Title
EP2575210B1 (en) Variable height radiating aperture
TWI496346B (zh) 介質天線以及天線模組
US20170271776A1 (en) Flat panel array antenna with integrated polarization rotator
US7315288B2 (en) Antenna arrays using long slot apertures and balanced feeds
WO2018121256A9 (zh) 低剖面天线
CN106887716B (zh) 一种cts平板阵列天线
US8698689B2 (en) Multi-beam antenna device
KR20160056262A (ko) 도파관 슬롯 어레이 안테나
US9859618B2 (en) Ridged horn antenna having additional corrugation
CN102683772A (zh) 孔径模式滤波器
RU2365000C1 (ru) Фазированная антенна с круговой пространственной поляризацией
CN113991296B (zh) 一种双频共口径victs相控阵天线
WO2018095541A1 (en) Planar array antenna
US20220173530A1 (en) Antenna device and communication device
CN106099324B (zh) 一种用于双极化双波束反射面天线馈源
WO2019090927A1 (zh) 天线单元及天线阵列
CN206976565U (zh) 双馈双频圆极化天线
Gil-Martínez et al. An array of leaky wave antennas for indoor smart wireless access point applications
JP2717264B2 (ja) フェーズド・アレイ・アンテナ
CN102037610B (zh) 用于高功率的具有多级混合波束形成网络的双极化天线
US9876284B2 (en) Multibeam source
CN206441874U (zh) 低剖面天线
WO2022051986A1 (zh) 一种双波束馈电网路及具有双波束馈电网络的混合网络天线
JP6175542B1 (ja) アンテナ装置
Guntupalli et al. Multi-dimensional scanning multi-beam array antenna fed by integrated waveguide Butler matrix

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17887291

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 28.10.2019)

122 Ep: pct application non-entry in european phase

Ref document number: 17887291

Country of ref document: EP

Kind code of ref document: A1