WO2021114019A1 - 天线系统以及电子设备 - Google Patents

天线系统以及电子设备 Download PDF

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Publication number
WO2021114019A1
WO2021114019A1 PCT/CN2019/124004 CN2019124004W WO2021114019A1 WO 2021114019 A1 WO2021114019 A1 WO 2021114019A1 CN 2019124004 W CN2019124004 W CN 2019124004W WO 2021114019 A1 WO2021114019 A1 WO 2021114019A1
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WO
WIPO (PCT)
Prior art keywords
circuit board
antenna system
metal base
horn unit
hole
Prior art date
Application number
PCT/CN2019/124004
Other languages
English (en)
French (fr)
Inventor
蒋革
刘毛
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/124004 priority Critical patent/WO2021114019A1/zh
Publication of WO2021114019A1 publication Critical patent/WO2021114019A1/zh

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave

Definitions

  • the present invention relates to the field of communication, and specifically includes an antenna system and electronic equipment.
  • 5G has three main application scenarios: enhanced mobile broadband, large-scale machine communication, and high-reliability and low-latency communication. These three application scenarios respectively correspond to different key indicators.
  • the peak user speed in the enhanced mobile bandwidth scenario is 20Gbps, and the minimum user experience rate is 100Mbps.
  • the unique high carrier frequency and large bandwidth characteristics of millimeter wave are the main means to realize 5G ultra-high data transmission rate. Therefore, the rich bandwidth resources of millimeter wave frequency band provide guarantee for high-speed transmission rate.
  • Horn antennas have been widely used due to their large gain and good directivity.
  • the size of the traditional horn antenna is relatively large, and for the metal millimeter wave horn antenna, it is impossible to form an array to meet the requirements of large-angle scanning.
  • the main purpose of the present invention is to provide an antenna system and electronic equipment that meets the requirements of large-angle scanning.
  • the present invention provides an antenna system, the antenna system includes a metal base, a circuit board, and a horn unit; the circuit board is sandwiched between the metal base and the horn unit, respectively Electrically connected to the metal base and the horn unit;
  • the metal base includes a top surface and a bottom surface opposite to the top surface, and the circuit board is covered on the top surface;
  • a feeder transmission line is provided on the circuit board
  • the horn unit includes four side walls that are connected end to end. The inner sides of the four side walls surround and form a through hole. The inner side of each side wall is provided with a ridge extending from the side wall. The ridges are respectively pressed on the circuit board at positions corresponding to the feeding transmission line; the horn unit further includes a first filling part filled in the through hole, and the first filling part is provided with The ridge corresponds to a groove, and the ridge cooperates with the groove to close the through hole.
  • the feeder transmission line includes two signal lines arranged in the circuit board, and the two signal lines are perpendicular to each other and are arranged at intervals in the thickness direction of the circuit board.
  • each ridge extends in a direction perpendicular to the side wall, and the ridges on the two opposite side walls are pressed to the positions corresponding to the same signal line.
  • the two signal lines are cross-shaped.
  • circuit board is provided with a feeding point, and one end of each signal line is electrically connected to the feeding point.
  • the circuit board includes a substrate and the signal lines buried in the substrate, and the circuit board also includes two pairs of grounding wires exposed on the surface of the circuit board, each pair of the grounding wire and a The position of the signal line corresponds to and includes two ground sub-wires arranged at intervals.
  • the two ground sub-lines of each pair of ground wires are symmetrical with respect to the center of the aperture of the horn unit, and the four ridges are respectively pressed on Four said ground sub-lines.
  • the cross section of the through hole gradually increases in a direction away from the circuit board.
  • the cross section of the first filling portion gradually increases in a direction away from the circuit board.
  • the metal base is provided with a reflection cavity, the top surface is recessed in the direction of the bottom surface to form the reflection cavity, the metal base further includes a second filling part, and the second filling part is received in the The reflection cavity, the shape of the second filling part matches the reflection cavity.
  • the present invention also provides an electronic device, which includes the antenna system described in any one of the above.
  • the beneficial effect of the present invention is that by filling the first filling part in the horn unit, the frequency and size of the antenna system can be reduced, so that the size of the antenna can be reduced while forming an array to meet the large-angle scanning requirements of the antenna system.
  • Fig. 1 is a schematic diagram of an antenna system provided by the present invention.
  • Fig. 2 is an exploded schematic diagram of the antenna system provided by the present invention.
  • Fig. 3 is a cross-sectional view of the antenna system provided by the present invention.
  • Fig. 4 is a top view of the horn unit of the antenna system provided by the present invention.
  • Fig. 5 is a perspective view of the circuit board of the antenna system provided by the present invention.
  • Fig. 6 is a schematic diagram of an enlarged view of B range in Fig. 2.
  • Fig. 7 is a schematic diagram of an enlarged view of the range C in Fig. 3.
  • 100 antenna system; 10, metal base; 11, top surface; 12, bottom surface; 13, reflection cavity; 14, second filling part; 20, circuit board; 201, substrate; 21, feeder transmission line 211, the first signal line; 212, the second signal line; 213, the first ground layer; 214, the second ground layer; 2131, the ground line; 2131a, 2131b, the ground subline; 213a, the inner edge of the first ground layer 214a, the inner edge of the second ground layer; 22, the feeding point; 221, the first feeding point; 222, the second feeding point; 231, the first side; 232, the second side; 30, the speaker unit; 31 311, inner side wall; 32, through hole; 312, ridge portion; 3121, coupling portion; 3122, extension portion; 33, first filling portion; 331, groove.
  • the present invention provides an antenna system 100.
  • the antenna system 100 includes a metal base 10, a circuit board 20, and a horn unit 30; the circuit board 20 is sandwiched on the metal base 10 It is electrically connected with the horn unit 30 and with the metal base 10 and the horn unit 30 respectively.
  • the metal base 10 includes a top surface 11 and a bottom surface 12 opposite to the top surface 11, and the circuit board 20 is disposed on the top surface 11.
  • the circuit board 20 is provided with a feeder transmission line.
  • the horn unit 30 includes four side walls 31 connected end to end.
  • the inner side walls 311 of the four side walls 31 surround and form a through hole 32.
  • the inner side wall 311 of each side wall 31 is provided with a direction toward the opposite side wall 31.
  • Extending ridges 312, the four ridges 312 are respectively press-fitted on the circuit board 20 at positions corresponding to the feeding transmission line;
  • the horn unit 30 also includes a first filled in the through hole 32
  • a filling portion 33, the first filling portion 33 is provided with a groove 331 corresponding to the ridge 312, and the ridge 312 cooperates with the groove 331 to close the through hole.
  • the ridge portion 312 of the horn unit 30 is superimposed on the side of the circuit board 20, and the ridge portion 312 is coupled and fed through the feeder transmission line to realize the reception and transmission of electromagnetic waves.
  • the horn unit 30 and the metal base 10 are respectively electrically connected to the circuit board 20 and serve as the system ground of the circuit board 20.
  • the number of the grooves 331 of the first filling portion 33 corresponds to the number of the ridges 312, and the ridges 312 are closely matched with the grooves 331, so that the ridges 312 are buried in the first filling portion 33 without contact with air.
  • the inner side wall 311 of the side wall 31 is completely attached to the side surface of the first filling portion 33, and the opening on the side of the through hole 32 away from the circuit board 20 is closed.
  • the first filling part 33 may completely fill the closed through hole 32.
  • the ridge portion 312 includes a coupling portion 3121 connected to the circuit board 20 and an extension portion 3122 extending from the coupling portion 3121 to an end of the through hole 32 away from the circuit board 20, and the extension portion 3122 is therefrom.
  • the end close to the coupling portion 3121 gradually expands toward the end away from the coupling portion 3121, so that the cross-sectional area of the end of the extension portion 3122 close to the coupling portion 3121 is larger than the cross-sectional area of the end far away from the coupling portion 3121.
  • the cross section of the through hole 32 gradually increases in a direction away from the circuit board 20.
  • the thickness of the four sidewalls 31 of the horn unit 30 gradually becomes thinner from the end close to the circuit board 20 to the end far away from the circuit board 20, so that the cross-sectional size of the through hole 32 gradually increases.
  • the opening area of the end of the through hole 32 close to the circuit board 20 is much larger than the opening area of the end far from the circuit board 20, that is, the horn unit 30 arranged in the above structure forms a horn-like structure.
  • the through hole 32 may have a circular or rectangular cross-section.
  • the cross section of the first filling portion 33 gradually increases in a direction away from the circuit board.
  • the cross-sectional size of the first filling portion 33 gradually increases from the end close to the circuit board 20 to the end away from the circuit board 20, and according to the cross-sectional shape of the through hole 32, the cross-sectional size of the first filling portion 33
  • the shape is a circular or rectangular shape with a notch, and the notch cooperates with the ridge 312 so that the groove 331 can completely wrap the ridge 312 and at the same time enable the first filling portion 33 to move the through hole 32 away from one end of the circuit board 20 The opening is completely closed to obtain a better antenna transmission effect.
  • the metal base 10 is provided with a reflective cavity 13, the top surface 11 is recessed toward the bottom surface 12 to form the reflective cavity 13, and the metal base 10 further includes a second filling portion 14.
  • Two filling parts 14 are accommodated in the reflecting cavity 13, and the shape of the second filling part 14 matches the reflecting cavity 13.
  • the reflecting cavity 13 is used to suppress the back radiation of the antenna system 100, and at the same time, adding the second filling part 14 can reduce the overall cut-off frequency of the antenna system 100.
  • the shape of the opening of the reflective cavity 13, the shape of the through hole 32, and the cross-sectional shape of the first filling portion 33 are the same, and the opening of the reflective cavity 13 is larger than that of the through hole 32 near the circuit board 20. Open to better suppress the back radiation of the antenna system 100.
  • the feeder transmission line 21 includes a first signal line 211 and a second signal line 212 arranged in the circuit board 20, and the two signal lines are arranged at intervals in the thickness direction of the circuit board.
  • the first signal line 211 and the second signal line 212 are cross-shaped and vertically arranged, and the cross-shaped intersection formed by the first signal line 211 and the second signal line 212 does not contact each other, so as to prevent the signal line 21 from being in contact with each other. Interference caused by direct contact between the two makes the antenna system 100 realize dual polarization, so as to adapt to more antenna system 100 application occasions.
  • each ridge 312 extends in a direction perpendicular to the side wall 31, and the ridges 312 on the two opposite side walls 31 are pressed against the positions corresponding to the same signal line.
  • FIG. 4 it can be understood that when the first signal line 211 and the second signal line 212 are intersected at intervals in a cross shape, two ridges 312 are respectively provided on the first signal line 211 and the second signal line 212. The bottom of the ridge 312 is in contact with the position of the circuit board 20 relative to the first signal line 211 or the second signal line 212.
  • a top view of the speaker unit 30 shows that the four ridges 312 are placed in a cross shape.
  • the circuit board 20 is provided with a feeding point 22, and one end of each of the first signal line 211 and the second signal line 212 is electrically connected to the feeding point 22 for feeding with external equipment. connection.
  • the first signal line 211 and the second signal line 212 extend to the first side surface 231 and the second side surface 232 of the circuit board 20, and are electrically connected to the feeding point 22 provided on the first side surface 231 and the second side surface 232
  • the second side surface 23 of the circuit board 20 is a surface parallel to the thickness direction of the circuit board.
  • the feeding point 22 includes a first feeding point 221 and a second feeding point 222.
  • the first feeding point 221 is electrically connected to one end of the first signal line 211, and the second feeding point 222 is electrically connected to the first signal line 211.
  • the two signal lines 212 are electrically connected.
  • the first feeding point 221 is arranged on the first side surface 231, and the first signal line 211 is electrically connected to the first feeding point 221; the second feeding point 222 is arranged on the second side surface 232, and the second signal line 212 is connected to the The second feeding point 222 is electrically connected.
  • the circuit board 20 includes a substrate 201, a first ground layer 213 exposed on the side of the substrate 201 close to the speaker unit 30, and a second ground layer 214 exposed on the side of the substrate 201 close to the metal base 10 ,
  • the first signal line 211 and the second signal line 212 are embedded in the substrate 201.
  • the first ground layer 213 includes two pairs of ground wires 2131, each pair of ground wires 2131 corresponds to a signal wire position and includes two ground sub wires 2131a, 2131b arranged at intervals, two ground sub wires 2131a of each pair of ground wires 2131, 2131b is symmetrical with respect to the center of the aperture of the horn unit 30, and the four ridges 312 are press-fitted to the four grounding sub-lines 2131a and 2131b respectively.
  • the variation of the distance between each pair of grounding sub-lines 2131a, 2131b can tune the feed impedance.
  • the size of the aperture enclosed by the inner edge 213a of the first ground layer (excluding the portion of the ground wire 2131) is the same as the size of the aperture on the side of the first filling portion 33 close to the circuit board 20.
  • the shape of the second ground layer 214 is substantially the same as that of the first ground layer 213, but a ground wire is not provided.
  • the size of the aperture enclosed by the inner edge 214a of the second ground layer is the same as the size of the aperture of the reflective cavity 13 facing the circuit board.
  • the first ground layer 213, the first signal line 211, and the second ground layer 214 form a strip line structure, and the first ground layer 213, the second signal line 212, and the second ground layer 214 form another strip line structure, respectively As the feeder transmission line 21 of the horn unit 30.
  • the present invention also provides an electronic device including the above-mentioned antenna system 100.
  • the frequency and size of the antenna system can be reduced, so that the size of the antenna can be reduced while the working frequency band of the antenna system is not affected.
  • two feeder transmission lines 21 are arranged in a crisscross pattern, coupled with the ridge 312 to realize dual polarization.
  • the reflective cavity 13 is provided on the metal base 10 and the second filling part 14 is added, which can increase the gain of the antenna and can meet the requirements of large-angle scanning.

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  • Waveguide Aerials (AREA)

Abstract

一种天线系统（100）和电子设备，天线系统（100）包括金属基座（10）、电路板（20）以及喇叭单元（30）；电路板（20）夹设于金属基座（10）和喇叭单元（30）之间且分别与金属基座（10）以及喇叭单元（30）电连接；金属基座（10）包括顶面（11）、与顶面（11）相对的底面（12），电路板（20）盖设于顶面（11）；电路板（20）上设置有馈电传输线（21）；喇叭单元（30）包括首尾相接的四个侧壁（31），四个侧壁（31）的内侧面（311）包围形成通孔（32），每个侧壁（31）的内侧设有从侧壁（31）延伸出的脊部（312），四个脊部（312）分别压合于电路板（20）上对应于馈电传输线（21）的位置；喇叭单元（30）还包括填充于通孔（32）内的第一填充部（33），第一填充部（33）设有与脊部（312）对应的凹槽（331），脊部（312）与凹槽（331）配合以封闭通孔（32）。通过在喇叭单元（30）中填充第一填充部（33），降低天线系统（100）的频率和尺寸，满足大角度扫描要求。

Description

天线系统以及电子设备 技术领域
本发明涉及通信领域，具体包括天线系统以及电子设备。
 背景技术
随着移动通讯技术的发展，手机、平板电脑、笔记本电脑等逐渐成为生活不可或缺的电子产品，并且该类电子产品都更新为增加天线系统使其具有通讯功能的电子通讯产品。
5G作为全球业界的研发焦点，其三个主要应用场景：增强型移动宽带、大规模机器通信、高可靠低延时通信。这三个应用场景分别对应着不同的关键指标，其中增强型移动带宽场景下用户峰值速度为20Gbps，最低用户体验速率为100Mbps。毫米波独有的高载频、大带宽特性是实现5G超高数据传输速率的主要手段，因此，毫米波频段丰富的带宽资源为高速传输速率提供了保障。
喇叭天线由于具有较大的增益和良好的方向性而得到了广泛的应用。然而，传统的喇叭天线的尺寸比较大，对于金属毫米波喇叭天线来说，无法组阵以满足大角度扫描要求。
因此，有必要提供一种新的天线系统及电子设备以解决上述问题。
 技术问题
本发明的主要目的在于提供一种满足大角度扫描要求的天线系统以及通电子设备。
 技术解决方案
为实现上述目的，本发明提供了一种天线系统，所述天线系统包括金属基座、电路板以及喇叭单元；所述电路板夹设于所述金属基座和所述喇叭单元之间且分别与所述金属基座以及所述喇叭单元电连接；
所述金属基座包括顶面、与所述顶面相对的底面，所述电路板盖设于所述顶面；
所述电路板上设置有馈电传输线；
所述喇叭单元包括首尾相接的四个侧壁，所述四个侧壁的内侧面包围形成通孔，每个侧壁的内侧设有从所述侧壁延伸出的脊部，所述四个脊部分别压合于所述电路板上对应于所述馈电传输线的位置；所述喇叭单元还包括填充于所述通孔内的第一填充部，所述第一填充部设有与所述脊部对应的凹槽，所述脊部与所述凹槽配合以封闭所述通孔。
进一步地，所述馈电传输线包括设于所述电路板内的两条信号线，所述两信号线相互垂直，且在所述电路板的厚度方向间隔设置。
进一步地，每一脊部向垂直于所述侧壁的方向延伸，相对的两个侧壁上的脊部压合于同一信号线所对应的位置。
进一步地，所述两条信号线呈十字形交叉状。
进一步地，所述电路板设有馈电点，每一信号线的其中一端与所述馈电点电连接。
进一步地，所述电路板包括基板以及埋设于所述基板中的所述信号线，所述电路板还包括裸露于所述电路板表面的两对接地线，每对所述接地线与一条所述信号线位置对应且包括两条间隔设置的接地子线，每对所述接地线的两条所述接地子线关于所述喇叭单元的口径中心对称，四个所述脊部分别压合于四条所述接地子线。
进一步地，所述通孔的横截面沿远离所述电路板的方向逐渐增大。
进一步地，所述第一填充部的横截面沿远离所述电路板的方向逐渐增大。
进一步地，所述金属基座设有反射腔，所述顶面向所述底面方向凹陷形成所述反射腔，所述金属基座还包括第二填充部，所述第二填充部收容于所述反射腔，所述第二填充部的形状与所述反射腔相匹配。
本发明还提供一种电子设备，所述电子设备包括上述任意一项所述的天线系统。
 有益效果
本发明的有益效果是：通过在喇叭单元中填充第一填充部，降低天线系统的频率和尺寸，可使得天线尺寸缩小的同时，组阵以满足天线系统的大角度扫描要求。
 附图说明
图1是本发明提供的天线系统的示意图。
图2为本发明提供的天线系统的分解示意图。
图3为本发明提供的天线系统的剖面图。
图4为本发明提供的天线系统的喇叭单元俯视图。
图5为本发明提供的天线系统的电路板的透视图。
图6为图2中B范围放大图的示意图。
图7位图3中C范围放大图的示意图。
附图说明：100、天线系统；10、金属基座；11、顶面；12、底面；13、反射腔；14、第二填充部；20、电路板；201、基板；21、馈电传输线；211、第一信号线；212、第二信号线；213、第一接地层；214、第二接地层；2131、接地线；2131a，2131b、接地子线；213a、第一接地层内侧边缘；214a、第二接地层内侧边缘；22、馈电点；221、第一馈电点；222、第二馈电点；231、第一侧面；232、第二侧面；30、喇叭单元；31、侧壁；311、内侧壁；32、通孔；312、脊部；3121、耦合部；3122、延伸部；33、第一填充部；331、凹槽。
 本发明的实施方式
为了使本发明实施方式的目的、技术方案和优点更加清楚，下面将结合附图对本发明的各个实施方式进行详细的阐述。然而，本领域的普通技术人员可以理解，在本发明各实施方式中，为了使读者更好理解本发明而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施方式的种种变化和修改，也可以实现本发明所要求保护的技术方案。
请参看图1-图2，本发明提供一种天线系统100，所述天线系统100包括金属基座10、电路板20以及喇叭单元30；所述电路板20夹设于所述金属基座10和所述喇叭单元30之间且分别与所述金属基座10以及所述喇叭单元30电连接。
所述金属基座10包括顶面11、与所述顶面11相对的底面12，所述电路板20盖设于所述顶面11。
所述电路板20内设置有馈电传输线。
所述喇叭单元30包括首尾相接的四个侧壁31，所述四个侧壁31的内侧壁311包围形成通孔32，每个侧壁31的内侧壁311设有向相对侧壁31方向延伸的脊部312，所述四个脊部312分别压合于所述电路板20上对应于所述馈电传输线的位置；所述喇叭单元30还包括填充于所述通孔32内的第一填充部33，所述第一填充部33设有对应所述脊部312凹槽331，所述脊部312与所述凹槽331配合以封闭所述通孔。
在本实施方式中，喇叭单元30的脊部312叠设于电路板20一侧，通过馈电传输线与脊部312耦合馈电，实现电磁波的接收与发送。同时，喇叭单元30和金属基座10分别与电路板20电连接，充当电路板20的系统地。第一填充部33的凹槽331数量对应于脊部312的数量，通过脊部312与凹槽331紧密配合，使所述脊部312埋设于第一填充部33中，不与空气接触。同时，侧壁31的内侧壁311与第一填充部33的侧面完全贴合，通孔32远离电路板20一侧的开口封闭。根据第一填充部33的体积，第一填充部33可完全填充封闭通孔32。通过将喇叭单元30填充，无需增大天线尺寸，即可降低天线系统的截止频率和尺寸。
优选的，请参看图3，所述脊部312包括与电路板20相连的耦合部3121和自耦合部3121延伸至通孔32远离电路板20一端的延伸部3122，所述延伸部3122自其靠近耦合部3121的一端向远离耦合部3121一端逐渐张开，以使延伸部3122靠近耦合部3121一端的横截面面积大于其远离所述耦合部3121一端的横截面面积。
优选的，所述通孔32的横截面沿远离所述电路板20方向逐渐增大。具体的，喇叭单元30的四个侧壁31的厚度均自靠近电路板20的一端向远离电路板20的一端逐渐变薄，以使通孔32的横截面尺寸逐渐增大。通孔32靠近电路板20一端的开口面积远大于远离电路板20一端的开口面积，即上述结构设置的喇叭单元30形成一喇叭状结构。另外，在本实施例中，通孔32可以为圆形或矩形的横截面。
优选的，所述第一填充部33的横截面沿远离所述电路板的方向逐渐增大。具体的，第一填充部33自靠近电路板20一端向远离电路板20一端的方向上的横截面尺寸逐渐增大，且配合根据通孔32的横截面形状，第一填充部33的横截面形状为带有缺口的圆形或矩形形状，该缺口与脊部312相配合，以使凹槽331能够完全包裹脊部312，同时使第一填充部33能够将通孔32远离电路板20一端的开口完全封闭，以获得更好的天线传输效果。
优选的，所述金属基座10设有反射腔13，所述顶面11向所底面12方向凹陷形成所述反射腔13，所述金属基座10还包括第二填充部14，所述第二填充部14收容于所述反射腔13，所述第二填充部14的形状与所述反射腔13相匹配。具体的，反射腔13用于抑制天线系统100的背向辐射，同时，增加第二填充部14可降低天线系统100整体的截止频率。更优的，反射腔13的开口形状、通孔32的形状、第一填充部33的横截面形状三者形状相同，且所述反射腔13的开口大于通孔32靠近电路板20一侧的开口，以更好抑制天线系统100的背向辐射。
优选的，请参看图5-7，所述馈电传输线21包括设于电路板20内的第一信号线211以及第二信号线212，两条信号线在所述电路板的厚度方向间隔设置。在本实施例中，第一信号线211以及第二信号线212十字形交叉垂直设置，且第一信号线211与第二信号线212形成的十字形交叉处互不接触，避免信号线21之间直接接触造成干扰，使天线系统100实现双极化，以适应更多的天线系统100应用场合。
优选的，每一脊部312向垂直于所述侧壁31的方向延伸，相对的两个侧壁31上的脊部312压合于同一信号线所对应的位置上。请参看图4，可以理解的，当第一信号线211以及第二信号线212呈十字形间隔交叉设置，第一信号线211以及第二信号线212上分别对应设有两个脊部312，脊部312的底部与电路板20相对于第一信号线211或第二信号线212所对位置接触，俯视喇叭单元30可见四个脊部312呈十字形放置。
优选的，所述电路板20设有馈电点22，每一第一信号线211以及第二信号线212的各有一端与所述馈电点22电连接，用于与外部设备进行馈电连接。具体的，第一信号线211、第二信号线212延伸至电路板20的第一侧面231、第二侧面232，与设置在第一侧面231、第二侧面232上的馈电点22电连接，电路板20的第二侧面23为平行于所述电路板厚度方向的面。在本实施例中，馈电点22包括第一馈电点221以及第二馈电点222，第一馈电点221与第一信号线211的一端电连接，第二馈电点222与第二信号线212电连接。具体的，第一馈电点221设置在第一侧面231，第一信号线211与第一馈电点221电连接；第二馈电点222设置在第二侧面232，第二信号线212与第二馈电点222电连接。
优选的，电路板20包括基板201、裸露于所述基板201靠近所述喇叭单元30一侧的第一接地层213、裸露于所述基板201靠近金属基座10一侧的第二接地层214，第一信号线211、第二信号线212嵌设在基板201内。第一接地层213包括两对接地线2131，每对接地线2131与一条信号线位置对应且包括两条间隔设置的接地子线2131a，2131b，每对接地线2131的两条接地子线2131a，2131b关于喇叭单元30的口径中心对称，四个脊部312分别压合于四条接地子线2131a，2131b。每对接地子线2131a，2131b之间的距离变化可以调谐馈电阻抗。第一接地层内侧边缘213a（除去接地线2131部分）围成的口径大小与第一填充部33靠近电路板20一侧的口径大小一致。第二接地层214的形状与第一接地层213大致相同，但未设置有接地线。第二接地层内侧边缘214a围成的口径大小与反射腔13朝向电路板的口径大小一致。第一接地层213、第一信号线211、第二接地层214形成一带状线结构，第一接地层213、第二信号线212、第二接地层214形成另一带状线结构，分别作为喇叭单元30的馈电传输线21。
本发明还提供一种电子设备，所述电子设备包括上述的天线系统100。
在上述实施例，通过在喇叭单元30中填充第一填充部33，降低天线系统的频率和尺寸，可使得天线尺寸缩小的同时，所述天线系统工作频段不受影响。同时通过两条馈电传输线21十字交叉设置，与脊部312耦合实现双极化。并且在金属基座10设置反射腔13并加入第二填充部14，可提高天线的增益，能够满足大角度扫描的要求。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

  1. 一种天线系统，其特征在于，所述天线系统包括金属基座、电路板以及喇叭单元；所述电路板夹设于所述金属基座和所述喇叭单元之间且分别与所述金属基座以及所述喇叭单元电连接；
    所述金属基座包括顶面、与所述顶面相对的底面，所述电路板盖设于所述顶面；
    所述电路板上设置有馈电传输线；
    所述喇叭单元包括首尾相接的四个侧壁，所述四个侧壁的内侧面包围形成通孔，每个侧壁的内侧设有从所述侧壁延伸出的脊部，所述四个脊部分别压合于所述电路板上对应于所述馈电传输线的位置；所述喇叭单元还包括填充于所述通孔内的第一填充部，所述第一填充部设有与所述脊部对应的凹槽，所述脊部与所述凹槽配合以封闭所述通孔。
  2. 根据权利要求1所述的天线系统，其特征在于，所述馈电传输线包括设于所述电路板内的两条信号线，所述两信号线相互垂直，且在所述电路板的厚度方向间隔设置。
  3. 根据权利要求2所述的天线系统，其特征在于，每一脊部向垂直于所述侧壁的方向延伸，相对的两个侧壁上的脊部压合于同一信号线所对应的位置。
  4. 根据权利要求2或3所述的天线系统，其特征在于，所述两条信号线呈十字形交叉状。
  5. 根据权利要求4所述的天线系统，其特征在于，所述电路板设有馈电点，每一信号线的其中一端与所述馈电点电连接。
  6. 根据权利要求5所述的天线系统，其特征在于，所述电路板包括基板以及埋设于所述基板中的所述信号线，所述电路板还包括裸露于所述电路板表面的两对接地线，每对所述接地线与一条所述信号线位置对应且包括两条间隔设置的接地子线，每对所述接地线的两条所述接地子线关于所述喇叭单元的口径中心对称，四个所述脊部分别压合于四条所述接地子线。
  7. 根据权利要求1所述的天线系统，其特征在于，所述通孔的横截面沿远离所述电路板的方向逐渐增大。
  8. 根据权利要求1或7所述的天线系统，其特征在于，所述第一填充部的横截面沿远离所述电路板的方向逐渐增大。
  9. 根据权利要求1所述的天线系统，其特征在于，所述金属基座设有反射腔，所述顶面向所述底面方向凹陷形成所述反射腔，所述金属基座还包括第二填充部，所述第二填充部收容于所述反射腔，所述第二填充部的形状与所述反射腔相匹配。
  10. 一种电子设备，其特征在于，所述电子设备包括权利要求1-9任意一项所述的天线系统。
PCT/CN2019/124004 2019-12-09 2019-12-09 天线系统以及电子设备 WO2021114019A1 (zh)

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