WO2020134352A1 - 一种天线及车载装置 - Google Patents

一种天线及车载装置 Download PDF

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Publication number
WO2020134352A1
WO2020134352A1 PCT/CN2019/110715 CN2019110715W WO2020134352A1 WO 2020134352 A1 WO2020134352 A1 WO 2020134352A1 CN 2019110715 W CN2019110715 W CN 2019110715W WO 2020134352 A1 WO2020134352 A1 WO 2020134352A1
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WO
WIPO (PCT)
Prior art keywords
antenna
antenna array
impedance converter
dielectric plate
edge
Prior art date
Application number
PCT/CN2019/110715
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English (en)
French (fr)
Inventor
沈亚川
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
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Publication of WO2020134352A1 publication Critical patent/WO2020134352A1/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
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0037—Particular feeding systems linear waveguide fed arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • 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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
    • 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
    • H01Q19/104—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 using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/065—Patch antenna array
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna

Definitions

  • the embodiments of the present invention relate to the field of communication technologies, and in particular, to an antenna and a vehicle-mounted device.
  • An object of the embodiments of the present invention is to provide an antenna and a vehicle-mounted device that can support vehicle-mounted millimeter wave communication in a 5G communication environment.
  • an embodiment of the present invention provides an antenna, including: a dielectric board, an antenna array module and an impedance converter provided on the first side of the dielectric board, and a feeder provided on the edge of the dielectric board The electric point and the reflective plate attached to the second side of the dielectric plate, the input end of the impedance converter is connected to the feeding point, and the output end of the impedance converter is connected to the antenna array module.
  • Embodiments of the present invention also provide an apparatus including the antenna as described above.
  • the embodiment of the present invention protects an antenna with a new structure.
  • the antenna structure includes an antenna array module and an impedance converter disposed on the first side of the dielectric board, and is attached to the second side of the dielectric board.
  • the combined reflective plate can obtain the millimeter wave signal to radiate the signal through the connection relationship between the antenna components, and through the blocking effect of the reflective plate, the millimeter wave signal can be radiated from the first side of the dielectric plate, thereby improving The efficiency of signal radiation.
  • the impedance converter and the antenna array module are connected through the first transmission line.
  • the impedance converter and the antenna array module are connected through the first transmission line, which can enable the impedance converter to effectively transmit the signal to the antenna array module.
  • the antenna array module includes a first antenna array and a second antenna array, and the first antenna array and the second antenna array are connected in series.
  • the signals radiated by the two antenna arrays are the same. By setting the two antenna arrays to radiate the same signals respectively, the signal is enhanced The intensity of radiation.
  • first antenna array and the second antenna array are connected through a second transmission line.
  • first antenna array and the second antenna array are connected by a second transmission line, so that the signal transmitted by the impedance converter can be effectively transmitted between the two antenna arrays.
  • the edge of the medium plate includes a first short edge, a first long edge, a second short edge, and a second long edge, and the first short edge, the first long edge, the second short edge, and the second long edge are connected in sequence, wherein, the feeding point is set on the first short edge.
  • the impedance converter includes: a quarter-wavelength impedance converter.
  • the impedance converter is a quarter-wavelength impedance converter, which can accurately match the internal resistance of the signal source connected to the antenna and the internal resistance of the antenna array module, thereby improving the signal transmission efficiency.
  • first side is the front of the dielectric plate
  • second side is the back of the dielectric plate
  • the millimeter wave signal is a 28 GHz frequency signal.
  • FIG. 1 is a schematic diagram of the front structure of the antenna in the first embodiment of the present application.
  • FIG. 2 is a schematic diagram of the side structure of the dielectric plate in the first embodiment of the present application.
  • FIG. 3 is a schematic diagram of the side structure of the antenna in the first embodiment of the present application.
  • FIG. 4 is a schematic diagram of the back structure of the antenna in the first embodiment of the present application.
  • FIG. 5 is a schematic diagram of the beam pointing direction of the antenna in the second implementation of the present application.
  • FIG. 7 is a transmission efficiency diagram of the antenna in the second embodiment of the present application.
  • the first embodiment of the present invention relates to an antenna.
  • 1 is a schematic diagram of the front structure of the antenna.
  • the antenna includes a dielectric board 101, an antenna array module 102 and an impedance converter 103 provided on the first side 1011 of the dielectric board, and a feed point 104 provided on the edge of the dielectric board 101.
  • the dielectric board 101 includes a first side 1011 and a second side 1012.
  • 3 is a schematic diagram of the side structure of the antenna in the embodiment of the present application
  • FIG. 4 is a schematic diagram of the structure of the back of the antenna. From FIGS. 3 and 4, it can be seen that the back of the antenna is covered by the reflective plate 105.
  • the antenna structure in the embodiment of the present application further includes a reflective plate 105 attached to the second side 1012 of the dielectric plate, and the input end of the impedance converter 103 is connected to the feeding point, and the output end of the impedance converter 103 is connected to the antenna array module 102 connections.
  • the first side surface refers specifically to the front surface of the dielectric plate 101
  • the second side surface refers specifically to the back surface of the dielectric plate 101.
  • the blocking effect of the reflective plate 105 Most of the signals radiated by the antenna array module 102 can be radiated from the front of the antenna, thereby achieving the purpose of radiating the signals in the antenna in a specified direction, and improving the transmission efficiency of the antenna.
  • the impedance converter 103 and the antenna array module 102 are connected through the first transmission line, so that the impedance converter 103 can effectively transmit the signal to the antenna array module 102.
  • the antenna array module 102 includes a first antenna array 1021 and a second antenna array 1022, and the first antenna array 1021 and the second antenna array 1022 are serially connected. It should be noted that, in this embodiment, the first antenna array 1021 and the second antenna array 1022 are connected through the second transmission line, so that the signal transmitted by the impedance converter 103 can be effectively transmitted between the two antenna arrays .
  • the edge of the dielectric plate 101 includes a first short edge, a first long edge, a second short edge, and a second long edge, and the first short edge, the first long edge, the second short edge, and the first The two long edges are connected in sequence, wherein the feeding point 104 is provided on the first short edge.
  • the dielectric plate 101 in this embodiment uses a low-loss millimeter-wave dielectric material, for example, it can be specifically Rogers high-frequency plate RO4835T.
  • the RO4835T material is used as an example for the description.
  • the dielectric plates of other materials are mainly capable of blocking the radiation signal, which is also within the protection scope of the present application, and the specific type of the dielectric plate material is not limited in the embodiments of the present application.
  • the antenna in this embodiment includes an antenna array module and an impedance converter provided on the first side of the dielectric board, and a reflecting plate attached to the second side of the dielectric board.
  • the connection relationship can obtain the millimeter wave signal to radiate the signal, and through the blocking effect of the reflective plate, the millimeter wave signal can be radiated from the first side of the dielectric plate, thereby improving the efficiency of signal radiation.
  • the second embodiment of the present invention relates to an antenna.
  • the second embodiment is substantially the same as the first embodiment.
  • This embodiment mainly describes the transmission effect of the antenna.
  • FIG. 5 is a schematic diagram of the beam pointing direction of the antenna.
  • the xz plane is a plane perpendicular to the antenna, and the positive direction of the z axis points to the front of the dielectric plate 101. The denser the curve in the figure, the stronger the signal strength. 5 It can be seen that the signal strength on the front side of the dielectric plate 101 is very strong, and the signal strength on the back side of the dielectric plate 101 is very small due to the presence of the reflective plate 105, so it can be seen from the beam direction of the antenna that the reflective plate 105 Played a very good blocking effect.
  • FIG. 6 it is a graph of the reflection coefficient of the antenna in this application.
  • the ordinate value S11 in the figure represents the reflection coefficient value of the antenna.
  • the antenna supports the effectiveness of the 28GH frequency signal at 28 GHz. transmission.
  • FIG. 7 is the efficiency diagram of the antenna in the present application.
  • the solid curve represents the radiation efficiency curve
  • the dashed curve represents the total efficiency.
  • the antenna in this embodiment can achieve efficient signal transmission at 28 GHz. So as to support the effective transmission process of 28GHz frequency signal.
  • the antenna in this embodiment includes an antenna array module and an impedance converter provided on the first side of the dielectric board, and a reflecting plate attached to the second side of the dielectric board.
  • the connection relationship can obtain the millimeter wave signal to radiate the signal, and through the blocking effect of the reflective plate, the millimeter wave signal can be radiated from the first side of the dielectric plate, thereby improving the efficiency of signal radiation.
  • a third embodiment of the present invention relates to an in-vehicle device.
  • the mobile terminal includes the antenna provided in the first or second embodiment.
  • the vehicle-mounted device should also include hardware such as a processor and a memory.
  • the memory and the processor are connected by a bus.
  • the bus may include any number of interconnected buses and bridges.
  • the bus connects one or more processors and memories.
  • the various circuits are linked together.
  • the bus can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be described further herein.
  • the bus interface provides an interface between the bus and the antenna system.
  • the data processed by the processor is transmitted on the wireless medium through the antenna system. Further, the antenna system also receives the data and transmits the data to the processor.
  • the processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory can be used to store data used by the processor when performing operations.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)

Abstract

本发明实施例涉及通信技术领域，公开了一种天线及车载装置。本发明中，介质板，设置在介质板第一侧面上的天线阵模块和阻抗转换器，设置在介质板边沿的馈电点，以及与介质板第二侧面贴合的反射板，阻抗转换器的输入端与馈电点连接，阻抗转换器的输出端与天线阵模块连接。本发明实施例中的天线结构能够支持5G通信环境下的车载毫米波通信。

Description

一种天线及车载装置 技术领域
本发明实施例涉及通信技术领域，特别涉及一种天线及车载装置。
 背景技术
随着通信技术的发展，天线在数据通信中起着越来越重要的作用，并且现有技术中针对3G和4G通信技术分别采用不同的天线结构，以实现数据不同类型的通信需求。
发明人发现现有技术中至少存在如下问题：目前5G通信成为通信技术发展的必然趋势，为了顺应这种发展趋势，车载通信必将使用5G毫米波频段，而现有技术中还少有支持5G毫米波通信的天线。
 技术问题
本发明实施方式的目的在于提供一种天线及车载装置，使得能够支持5G通信环境下的车载毫米波通信。
 技术解决方案
为解决上述技术问题，本发明的实施方式提供了一种天线，包括：介质板，设置在所述介质板第一侧面上的天线阵模块和阻抗转换器，设置在所述介质板边沿的馈电点，以及与所述介质板第二侧面贴合的反射板，所述阻抗转换器的输入端与所述馈电点连接，所述阻抗转换器的输出端与所述天线阵模块连接。
本发明的实施方式还提供了一种装置，包括如上所述的天线。
本发明实施方式相对于现有技术而言，保护了一种新型结构的天线，该天线结构中包括设置在介质板第一侧面的天线阵模块和阻抗转换器，以及与介质板第二侧面贴合的反射板，通过天线组件之间的连接关系，能够获取毫米波信号从而进行信号的辐射，并且通过反射板的阻挡作用，能够使毫米波信号从介质板第一侧面进行辐射，从而提高了信号辐射的效率。
另外，阻抗转换器与天线阵模块通过第一传输线进行连接。该实现中，阻抗转换器和天线阵模块之间通过第一传输线进行连接，可以使阻抗转换器有效的将信号传输给天线阵模块。
另外，天线阵模块包括第一天线阵和第二天线阵，第一天线阵和第二天线阵串行连接。该实现中，由于第一天线阵和第二天线阵是串行连接的，所以两个天线阵中所辐射的信号是相同的，通过设置两个天线阵分别辐射相同的信号，因此增强了信号辐射的强度。
另外，第一天线阵和第二天线阵通过第二传输线进行连接。该实现中，第一天线阵和第二天线阵之间通过第二传输线进行连接，可以使阻抗转换器传输过来的信号在两个天线阵之间进行有效的传输。
另外，介质板边沿包括第一短边沿、第一长边沿、第二短边沿和第二长边沿，并且第一短边沿、第一长边沿、第二短边沿和第二长边沿顺次连接，其中，馈电点设置在第一短边沿上。
 有益效果
另外，阻抗转换器包括：四分之一波长阻抗转换器。该实现中，具体说明阻抗转换器为四分之一波长阻抗转换器，可以使与天线相连的信号源内阻与天线阵模块的内阻实现准确的匹配，从而提高信号的传输效率。
另外，第一侧面为介质板的正面，第二侧面为介质板的背面。
另外，毫米波信号为28GHz频率信号。
 附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是本申请第一实施例中天线正面结构的示意图；
图2是本申请第一实施例中介质板侧面结构的示意图；
图3是本申请第一实施例中天线侧面结构的示意图；
图4是本申请第一实施例中天线背面结构的示意图；
图5是本申请第二实施中天线的波束指向示意图；
图6是本申请第二实施例中天线的反射系数曲线图；
图7是本申请第二实施例中天线的传输效率图。
 本发明的实施方式
为使本发明实施例的目的、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，为了使读者更好地理解本申请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，也可以实现本申请所要求保护的技术方案。
本发明的第一实施方式涉及一种天线。如图1所示为天线正面结构的示意图，天线包括介质板101，设置在介质板第一侧面1011上的天线阵模块102和阻抗转换器103，设置在介质板101边沿的馈电点104。如图2所示为介质板侧面结构示意图，介质板101包括第一侧面1011和第二侧面1012。如图3所示为本申请实施例中天线侧面结构的示意图，而如图4所示，为天线背面的结构示意图，由图3和图4可知天线的背面被反射板105覆盖，由此可知，本申请实施方式中的天线结构还包括与介质板第二侧面1012贴合的反射板105，并且阻抗转换器103的输入端与馈电点连接，阻抗转换器103的输出端与天线阵模块102连接。
需要说明的是，在本实施方式中第一侧面特指的是介质板101的正面，而第二侧面特指的是介质板101的背面，而本实施方式中通过反射板105的阻挡作用，由天线阵模块102所辐射出的大部分信号能够从天线的正面辐射出去，从而达到了将天线中的信号按照指定的方向进行辐射的目的，提高了天线的传输效率。
具体的说，在本实施方式中，阻抗转换器103与天线阵模块102通过第一传输线进行连接，可以使阻抗转换器103有效的将信号传输给天线阵模块102。
其中，如图1所示，在本实施方式中天线阵模块102包括第一天线阵1021和第二天线阵1022，第一天线阵1021和第二天线阵1022串行连接。需要说明的是，在本实施方式中，第一天线阵1021和第二天线阵1022通过第二传输线进行连接，可以使阻抗转换器103传输过来的信号在两个天线阵之间进行有效的传输。
其中，在本实施方式中，介质板101边沿包括第一短边沿、第一长边沿、第二短边沿和第二长边沿，并且第一短边沿、第一长边沿、第二短边沿和第二长边沿顺次连接，其中，馈电点104设置在第一短边沿上。
其中，本实施方式中的介质板101所采用的是低损耗的毫米波介质材料，例如，具体可以是罗杰斯的高频板材RO4835T，当然本实施方式中仅是以RO4835T材料为例进行说明，对于其它材质的介质板主要能够实现辐射信号阻挡的作用，也是在本申请的保护范围内的，本申请实施方式中并不限定介质板材料的具体类型。
与现有技术相比，本实施方式中的天线，包括设置在介质板第一侧面的天线阵模块和阻抗转换器，以及与介质板第二侧面贴合的反射板，通过天线组件之间的连接关系，能够获取毫米波信号从而进行信号的辐射，并且通过反射板的阻挡作用，能够使毫米波信号从介质板第一侧面进行辐射，从而提高了信号辐射的效率。
本发明的第二实施方式涉及一种天线，第二实施方式与第一实施方式大致相同，本实施方式主要对天线的传输效果进行具体说明。
其中，如图5所示为天线的波束指向示意图，xz平面为垂直于天线的平面，而z轴的正方向指向介质板101的正面，图中曲线越密代表信号强度越强，因此由图5可以看出在介质板101的正面信号强度很强，而在介质板101的背面由于反射板105的存在，信号强度很小，因此由天线的波束指向可以看出，反射板105对天线信号起到了很好的阻挡作用。
具体的说，如图6所示为本申请中天线的反射系数曲线图，图中纵坐标值S11表示天线的反射系数值，由图可以看出，在28GHz时天线支持对28GH频率信号的有效传输。
具体的说，如图7所示是本申请中天线的效率图，如图所示实曲线表示辐射效率曲，虚曲线表示总效率，本实施方式中的天线在28GHz能够实现高效的信号传输，从而支持28GHz频率信号的有效传输过程。
与现有技术相比，本实施方式中的天线，包括设置在介质板第一侧面的天线阵模块和阻抗转换器，以及与介质板第二侧面贴合的反射板，通过天线组件之间的连接关系，能够获取毫米波信号从而进行信号的辐射，并且通过反射板的阻挡作用，能够使毫米波信号从介质板第一侧面进行辐射，从而提高了信号辐射的效率。
本发明的第三实施方式涉及一种车载装置，该移动终端包括上述第一或第二实施方式所提供的天线。
其中，当然，该车载装置还应当包括处理器、存储器等硬件，其中，存储器和处理器采用总线方式连接，总线可以包括任意数量的互联的总线和桥，总线将一个或多个处理器和存储器的各种电路链接在一起。总线还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口在总线和天线系统之间提供接口。经处理器处理的数据通过天线系统在无线介质上进行传输，进一步，天线系统还接收数据并将数据传送给处理器。处理器负责管理总线和通常的处理，还可以提供各种功能，包括定时，外围接口，电压调节、电源管理以及其他控制功能。而存储器可以被用于存储处理器在执行操作时所使用的数据。
本领域的普通技术人员可以理解，上述各实施方式是实现本发明的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本发明的精神和范围。

Claims (10)

  1. 一种天线，其特征在于，包括：介质板，设置在所述介质板第一侧面上的天线阵模块和阻抗转换器，设置在所述介质板边沿的馈电点，以及与所述介质板第二侧面贴合的反射板，所述阻抗转换器的输入端与所述馈电点连接，所述阻抗转换器的输出端与所述天线阵模块连接。
  2. 根据权利要求1所述的天线，其特征在于，所述阻抗转换器与所述天线阵模块通过第一传输线进行连接。
  3. 根据权利要求1所述的天线，其特征在于，所述天线阵模块包括第一天线阵和第二天线阵，所述第一天线阵和所述第二天线阵串行连接。
  4. 根据权利要求3所述的天线，其特征在于，所述第一天线阵和所述第二天线阵通过第二传输线进行连接。
  5. 根据权利要求1所述的天线，其特征在于，所述介质板边沿包括第一短边沿、第一长边沿、第二短边沿和第二长边沿，并且所述第一短边沿、所述第一长边沿、所述第二短边沿和所述第二长边沿顺次连接，其中，所述馈电点设置在所述第一短边沿上。
  6. 根据权利要求1所述的天线，其特征在于，所述阻抗转换器包括：四分之一波长阻抗转换器。
  7. 根据权利要求1所述的天线，其特征在于，所述第一侧面为所述介质板的正面，所述第二侧面为所述介质板的背面。
  8. 根据权利要求1至7任一项所述的天线，其特征在于，所述毫米波信号为28GHz频率信号。
  9. 根据权利要求8所述的天线，其特征在于，所述介质板为毫米波介质材料。
  10. 一种车载装置，其特征在于，包括权利要求1至9中任意一项所述的天线。
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