WO2018177027A1 - Vehicle-mounted array radar antenna and vehicle lamp - Google Patents
Vehicle-mounted array radar antenna and vehicle lamp Download PDFInfo
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- WO2018177027A1 WO2018177027A1 PCT/CN2018/075153 CN2018075153W WO2018177027A1 WO 2018177027 A1 WO2018177027 A1 WO 2018177027A1 CN 2018075153 W CN2018075153 W CN 2018075153W WO 2018177027 A1 WO2018177027 A1 WO 2018177027A1
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
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- 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
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3291—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted in or on other locations inside the vehicle or vehicle body
Definitions
- the present application relates to the field of vehicle manufacturing technology, and in particular, to an in-vehicle array radar antenna and a vehicle lamp.
- An in-vehicle millimeter wave anti-collision radar antenna system in the prior art comprising a back focus antenna, wherein the open end of the back focus antenna is fixed with a lens unit, and the narrow end is fixed with a microstrip antenna;
- the lens unit comprises an emission lens and a receiving lens,
- the microstrip antenna includes a transmitting antenna and a receiving antenna, and the receiving antenna illuminates the receiving lens through three microstrip patch feeds juxtaposed in a horizontal direction;
- the transmitting antenna is sequentially connected with a power amplifier, a directional coupler, a voltage controlled oscillator, and
- the linear modulator has a low noise amplifier, a low pass filter and an intermediate frequency output unit connected in sequence;
- the microstrip antenna is fed by a microstrip line, and the microstrip antenna array is fed by a series and mixed feed mode.
- the back focus antenna in the above antenna system is actually a horn antenna, and the gain of the horn antenna is high, but the receiving area is small, and the reflection coefficient on the surface of the horn is small, and is generally rarely used for direct reception, and is often used as two.
- the sub-radiation back-feed parabolic receiving antenna feeds the antenna, and the back focal antenna has a large volume and is inconvenient to install, which increases the volume of the entire antenna system, resulting in limited application environment.
- the purpose of the present application is to solve at least one of the technical problems in the related art to some extent.
- the first object of the present application is to propose an in-vehicle array radar antenna.
- the vehicle-mounted array radar antenna provided by the present application has a low profile, a simple structure, is convenient to install, is embedded in the lampshade of the lamp, does not require additional materials, and uses a microstrip array antenna to meet the requirements of high gain and small angle.
- a second object of the present application is to propose a vehicle lamp.
- the vehicle-mounted array radar antenna of the first aspect of the present application includes: the vehicle-mounted array radar antenna is embedded in a lamp cover of the vehicle lamp, and the vehicle-mounted array radar antenna includes a microstrip patch antenna array and a medium base. And a reflective surface; the microstrip patch antenna array is located on an upper surface of the dielectric substrate, and is connected to an upper surface of the dielectric substrate; the reflective surface is located on a lower surface of the dielectric substrate, The lower surface of the dielectric substrate is connected.
- the vehicle-mounted array radar antenna of the embodiment of the present application has a low profile, a simple structure, is convenient to install, is embedded in the lampshade of the lamp, does not require additional materials, and uses a microstrip array antenna to meet the requirements of high gain and small angle.
- a vehicle lamp includes: a light source, a lamp cover, and an in-vehicle array radar antenna as described above.
- FIG. 1 is a schematic structural diagram of an embodiment of an in-vehicle array radar antenna of the present application
- FIG. 2 is a side view of a microstrip array antenna in an in-vehicle array radar antenna of the present application
- FIG. 3 is a schematic structural diagram of an antenna array element in an in-vehicle array radar antenna of the present application
- FIG. 4 is a layout diagram of a microstrip patch antenna array in an in-vehicle array radar antenna of the present application
- FIG. 5 is a schematic diagram of an embodiment of an antenna setting area in an in-vehicle array radar antenna of the present application
- FIG. 7 is a far field diagram of the 2D of the vehicle array radar antenna of the present application.
- FIG. 1 is a schematic structural diagram of an embodiment of an in-vehicle array radar antenna of the present application.
- the vehicle-mounted array radar antenna is embedded in a lamp cover 11 of the vehicle lamp, and the vehicle-mounted array radar antenna includes a microstrip patch antenna array 12 .
- the microstrip patch antenna array 12, the dielectric substrate 13 and the reflective surface 14 are all embedded in the lamp cover 11 of the lamp.
- the microstrip patch antenna array 12 is located on the upper surface of the dielectric substrate 13 and is connected to the upper surface of the dielectric substrate 13;
- the reflecting surface 14 is located on the lower surface of the dielectric substrate 13 and is connected to the lower surface of the dielectric substrate.
- FIG. 2 is a side view of the microstrip array antenna in the vehicle array radar antenna of the present application.
- the microstrip patch antenna array 12 includes at least two antenna elements, and each of the antenna elements may include a radiating element 31, an impedance transformer 32, and a microstrip feed line 33. Each antenna element may also include at least one radiating element 31, at least one impedance transformer 32, and a microstrip feed line 33.
- FIG. 3 is a schematic structural diagram of an antenna array element in an in-vehicle array radar antenna of the present application. Specifically, as shown in FIG.
- each antenna element may include a first radiating element 31, a second radiating element 31, a first impedance converter 32, a second impedance converter 32, and a microstrip feeder 33, and the first impedance transform
- One end of the device 32 is connected to the first radiating element 31, the other end of the first impedance converter 32 is connected to one end of the microstrip feeder 33, and one end of the second impedance converter 32 is connected to the second radiating element 31, and the second impedance transform
- the other end of the device 32 is coupled to the other end of the microstrip feed line 33 for effecting impedance matching of the radiating element 31 to the microstrip feed line 33.
- the impedance of the microstrip feed line 33 may be 50 Ohm.
- each of the at least two antenna elements is connected by a microstrip feed line 33 and then connected by a power division network 34, and is fed by a microstrip feed line 33.
- the layout of the microstrip patch antenna array 12 can be as shown in FIG. 4, and FIG. 4 is a layout diagram of the microstrip patch antenna array in the vehicle array radar antenna of the present application.
- the antenna array element in the microstrip patch antenna array 12 is a microstrip patch antenna. Since the gain of a single microstrip patch antenna is relatively small, the performance of the vehicle radar antenna cannot be satisfied. Therefore, in this embodiment, the microstrip patch antenna is used as the antenna array element of the microstrip patch antenna array 12 to increase the gain of the vehicle radar antenna and meet the requirements of high gain and small angle.
- the vehicle-mounted array radar antenna in this embodiment may further include: a radio frequency circuit, wherein the radio frequency circuit is connected to the microstrip feed line 33, and is integrated with the electronic control unit of the vehicle lamp; that is, the radio frequency circuit may be combined with the above lamp
- the electronic control unit is placed on the same circuit board.
- the above-mentioned vehicle-mounted array radar antenna may be disposed in at least two regions divided in the lampshade, and the opening and closing of the vehicle-mounted array radar antenna in different regions is controlled by the switch; the switch is disposed in the radio frequency circuit. .
- FIG. 5 is a schematic diagram of an embodiment of an antenna setting area in an in-vehicle array radar antenna of the present application.
- the lampshade can be divided into at least two regions, and the in-vehicle array radar antennas are disposed in different regions, and
- the above-mentioned radio frequency circuit is provided with a switch, and the switch is used to control the opening and closing of the on-board array radar antenna in different areas, thereby achieving directional adjustment.
- the lampshade is divided into four regions, and an in-vehicle array radar antenna is disposed in each region.
- the partition location and the partition may be determined according to actual use conditions. The number is not limited in this embodiment.
- the material of the dielectric substrate 13 and the material of the lamp cover 11 can be the same, so that no additional material is needed, the material requirements are reduced, the installation is convenient, and the applicability is wider.
- the dielectric substrate 13 may be made of a material different from that of the globe 11, which is not limited in this embodiment. However, in the present embodiment, the dielectric substrate 13 is made of the same material as the globe 11 as an example.
- the above-mentioned vehicle-mounted array radar antenna is an arched antenna, and the outer structure of the above-described vehicle-mounted array radar antenna is the same as that of the above-mentioned vehicle lamp. That is to say, the in-vehicle array radar antenna in this embodiment adopts an arc structure of a vehicle lamp.
- the array radar antennas are mostly planar structures.
- the vehicle-mounted array radar antennas in this embodiment can be designed as arched antennas according to the specific use environment, without destroying the outer shape structure and aerodynamics of the carrier.
- arched antennas need to be designed in consideration of the shape and distribution of the antenna.
- the mutual coupling effect between the arched carrier and the antenna elements should be considered in the design, as well as the polarization of the vehicle array radar antenna. Bandwidth and other issues.
- FIG. 6 is a far-field direction diagram of the vehicle array radar antenna 3D of the present application
- FIG. 7 is the present application. Vehicle array radar antenna 2D far field pattern.
- the maximum gain at 2.4G is 21.4 dBi.
- the vehicle-mounted array radar antenna provided by the present application can avoid interference with other signals at a small angle, and meets high gain and small angle requirements.
- the application further provides a vehicle lamp, comprising: a light source, a lamp cover and an on-board array radar antenna provided by the embodiment shown in FIGS. 1 to 5 of the present application.
- portions of the application can be implemented in hardware, software, firmware, or a combination thereof.
- multiple steps or methods may be implemented in software or firmware stored in a memory and executed by suitable instructions.
- PGA Programmable Gate Array
- FPGA Field Programmable Gate Array
- each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules.
- the integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
- the above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
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- Radar Systems Or Details Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Provided are a vehicle-mounted array radar antenna and a vehicle lamp. The vehicle-mounted array radar antenna is embedded in a shade of a vehicle lamp. The vehicle-mounted array radar antenna comprises a microstrip patch antenna array, a media substrate and a reflecting surface. The microstrip patch antenna array is positioned at and connected to an upper surface of the media substrate. The reflecting surface is positioned under and connected to a lower surface of the media substrate. The vehicle-mounted array radar antenna has a low profile and a simple structure and can be conveniently installed in the shade of the vehicle lamp without needing any additional material. Moreover, the use of a microstrip array antenna satisfies the requirements of high gain and a small angle.
Description
相关申请的交叉引用Cross-reference to related applications
本申请要求于2017年03月30日提交至中国国家知识产权局的专利申请号为201710203752.1的中国专利申请的优先权，其公开内容通过引用并入本文。The present application claims priority to Chinese Patent Application No. 201710203752.1, filed on March 30, 2017, to
本申请涉及车辆制造技术领域，尤其涉及一种车载阵列雷达天线和车灯。The present application relates to the field of vehicle manufacturing technology, and in particular, to an in-vehicle array radar antenna and a vehicle lamp.
现有技术中的一种车载毫米波防撞雷达天线***，包括后焦天线，上述后焦天线的敞口端固定有透镜单元，窄口端固定有微带天线；上述透镜单元包括发射透镜和接收透镜，微带天线包括发射天线和接收天线，接收天线通过水平方向并列的三个微带贴片馈源照射接收透镜；上述发射天线依次连接有功率放大器、定向耦合器、压控振荡器和线性调制器，接收天线依次连接有低噪放大器、低通滤波器和中频输出单元；上述微带天线采用微带线馈电，微带天线阵列使用串并混合的馈电方式进行馈电。An in-vehicle millimeter wave anti-collision radar antenna system in the prior art, comprising a back focus antenna, wherein the open end of the back focus antenna is fixed with a lens unit, and the narrow end is fixed with a microstrip antenna; the lens unit comprises an emission lens and a receiving lens, the microstrip antenna includes a transmitting antenna and a receiving antenna, and the receiving antenna illuminates the receiving lens through three microstrip patch feeds juxtaposed in a horizontal direction; the transmitting antenna is sequentially connected with a power amplifier, a directional coupler, a voltage controlled oscillator, and The linear modulator has a low noise amplifier, a low pass filter and an intermediate frequency output unit connected in sequence; the microstrip antenna is fed by a microstrip line, and the microstrip antenna array is fed by a series and mixed feed mode.
但是，上述天线***中的后焦天线实际上就是喇叭天线，喇叭天线的增益较高，但是接收面积小，其口面上的反射系数较小，一般很少用来直接接收，而常用作二次放射式后馈抛物面接收天线的馈源，并且这种后焦天线体积较大，不便安装，会增加整个天线***的体积，导致应用环境受限。However, the back focus antenna in the above antenna system is actually a horn antenna, and the gain of the horn antenna is high, but the receiving area is small, and the reflection coefficient on the surface of the horn is small, and is generally rarely used for direct reception, and is often used as two. The sub-radiation back-feed parabolic receiving antenna feeds the antenna, and the back focal antenna has a large volume and is inconvenient to install, which increases the volume of the entire antenna system, resulting in limited application environment.
发明内容Summary of the invention
本申请的目的旨在至少在一定程度上解决相关技术中的技术问题之一。The purpose of the present application is to solve at least one of the technical problems in the related art to some extent.
为此，本申请的第一个目的在于提出一种车载阵列雷达天线。本申请提供的车载阵列雷达天线具有低剖面，结构简单，方便安装，嵌在车灯的灯罩中，无需额外增加材料，并且采用微带阵列天线，可以满足高增益、小角度的需求。To this end, the first object of the present application is to propose an in-vehicle array radar antenna. The vehicle-mounted array radar antenna provided by the present application has a low profile, a simple structure, is convenient to install, is embedded in the lampshade of the lamp, does not require additional materials, and uses a microstrip array antenna to meet the requirements of high gain and small angle.
本申请的第二个目的在于提出一种车灯。A second object of the present application is to propose a vehicle lamp.
为了实现上述目的，本申请第一方面实施例的车载阵列雷达天线，包括：所述车载阵列雷达天线嵌在车灯的灯罩中,所述车载阵列雷达天线包括微带贴片天线阵列、介质基材和反射面；所述微带贴片天线阵列位于所述介质基材的上表面，与所述介质基材的上表面相连； 所述反射面位于所述介质基材的下表面，与所述介质基材的下表面相连。In order to achieve the above object, the vehicle-mounted array radar antenna of the first aspect of the present application includes: the vehicle-mounted array radar antenna is embedded in a lamp cover of the vehicle lamp, and the vehicle-mounted array radar antenna includes a microstrip patch antenna array and a medium base. And a reflective surface; the microstrip patch antenna array is located on an upper surface of the dielectric substrate, and is connected to an upper surface of the dielectric substrate; the reflective surface is located on a lower surface of the dielectric substrate, The lower surface of the dielectric substrate is connected.
本申请实施例的车载阵列雷达天线具有低剖面，结构简单，方便安装，嵌在车灯的灯罩中，无需额外增加材料，并且采用微带阵列天线，可以满足高增益、小角度的需求。The vehicle-mounted array radar antenna of the embodiment of the present application has a low profile, a simple structure, is convenient to install, is embedded in the lampshade of the lamp, does not require additional materials, and uses a microstrip array antenna to meet the requirements of high gain and small angle.
为了实现上述目的，本申请第二方面实施例的车灯，包括：光源、灯罩和如上所述的车载阵列雷达天线。In order to achieve the above object, a vehicle lamp according to an embodiment of the second aspect of the present invention includes: a light source, a lamp cover, and an in-vehicle array radar antenna as described above.
本申请附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。The aspects and advantages of the present invention will be set forth in part in the description which follows.
本申请上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from
图1为本申请车载阵列雷达天线一个实施例的结构示意图；1 is a schematic structural diagram of an embodiment of an in-vehicle array radar antenna of the present application;
图2为本申请车载阵列雷达天线中微带阵列天线的侧视图；2 is a side view of a microstrip array antenna in an in-vehicle array radar antenna of the present application;
图3为本申请车载阵列雷达天线中天线阵元的结构示意图；3 is a schematic structural diagram of an antenna array element in an in-vehicle array radar antenna of the present application;
图4为本申请车载阵列雷达天线中微带贴片天线阵列的排布图；4 is a layout diagram of a microstrip patch antenna array in an in-vehicle array radar antenna of the present application;
图5为本申请车载阵列雷达天线中天线设置区域一个实施例的示意图；5 is a schematic diagram of an embodiment of an antenna setting area in an in-vehicle array radar antenna of the present application;
图6为本申请车载阵列雷达天线3D远场方向图；6 is a far field view of the 3D of the vehicle array radar antenna of the present application;
图7为本申请车载阵列雷达天线2D远场方向图。FIG. 7 is a far field diagram of the 2D of the vehicle array radar antenna of the present application.
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。相反，本申请的实施例包括落入所附权利要求书的精神和内涵范围内的所有变化、修改和等同物。The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative only, and are not to be construed as limiting. On the contrary, the invention is intended to cover all modifications, modifications and equivalents
图1为本申请车载阵列雷达天线一个实施例的结构示意图，如图1所示，上述车载阵列雷达天线嵌在车灯的灯罩11中，上述车载阵列雷达天线包括微带贴片天线阵列12、介质基材13和反射面14。具体的，微带贴片天线阵列12、介质基材13和反射面14均嵌在车灯的灯罩11中。1 is a schematic structural diagram of an embodiment of an in-vehicle array radar antenna of the present application. As shown in FIG. 1 , the vehicle-mounted array radar antenna is embedded in a lamp cover 11 of the vehicle lamp, and the vehicle-mounted array radar antenna includes a microstrip patch antenna array 12 . The dielectric substrate 13 and the reflective surface 14. Specifically, the microstrip patch antenna array 12, the dielectric substrate 13 and the reflective surface 14 are all embedded in the lamp cover 11 of the lamp.
其中，微带贴片天线阵列12位于介质基材13的上表面，与介质基材13的上表面相连；The microstrip patch antenna array 12 is located on the upper surface of the dielectric substrate 13 and is connected to the upper surface of the dielectric substrate 13;
反射面14位于上述介质基材13的下表面，与上述介质基材的下表面相连。The reflecting surface 14 is located on the lower surface of the dielectric substrate 13 and is connected to the lower surface of the dielectric substrate.
上述微带阵列天线的侧视图可以如图2所示，图2为本申请车载阵列雷达天线中微带阵列天线的侧视图。A side view of the microstrip array antenna may be as shown in FIG. 2. FIG. 2 is a side view of the microstrip array antenna in the vehicle array radar antenna of the present application.
本实施例中，上述微带贴片天线阵列12包括至少两个天线阵元，每个天线阵元可以包括辐射元31、阻抗变换器32和微带馈线33。每个天线阵元还可以包括至少一个辐射元31、至少一个阻抗变换器32和微带馈线33。图3为本申请车载阵列雷达天线中天线阵元的结构示意图。具体的，图3所示，每个天线阵元可以包括第一辐射元31、第二辐射元31、第一阻抗变换器32、第二阻抗变换器32和微带馈线33，第一阻抗变换器32的一端与第一辐射元31连接，第一阻抗变换器32的另一端与微带馈线33的一端连接，第二阻抗变换器32的一端与第二辐射元31连接，第二阻抗变换器32的另一端与微带馈线33的另一端连接，用于实现辐射元31到微带馈线33的阻抗匹配。本实施例中，上述微带馈线33的阻抗可以为50Ohm。In this embodiment, the microstrip patch antenna array 12 includes at least two antenna elements, and each of the antenna elements may include a radiating element 31, an impedance transformer 32, and a microstrip feed line 33. Each antenna element may also include at least one radiating element 31, at least one impedance transformer 32, and a microstrip feed line 33. FIG. 3 is a schematic structural diagram of an antenna array element in an in-vehicle array radar antenna of the present application. Specifically, as shown in FIG. 3, each antenna element may include a first radiating element 31, a second radiating element 31, a first impedance converter 32, a second impedance converter 32, and a microstrip feeder 33, and the first impedance transform One end of the device 32 is connected to the first radiating element 31, the other end of the first impedance converter 32 is connected to one end of the microstrip feeder 33, and one end of the second impedance converter 32 is connected to the second radiating element 31, and the second impedance transform The other end of the device 32 is coupled to the other end of the microstrip feed line 33 for effecting impedance matching of the radiating element 31 to the microstrip feed line 33. In this embodiment, the impedance of the microstrip feed line 33 may be 50 Ohm.
参见图3，上述至少两个天线阵元中各天线阵元之间通过微带馈线33连接之后再通过功分网络34连接，采用微带馈线33馈电。Referring to FIG. 3, each of the at least two antenna elements is connected by a microstrip feed line 33 and then connected by a power division network 34, and is fed by a microstrip feed line 33.
本实施例中，微带贴片天线阵列12的排布图可以如图4所示，图4为本申请车载阵列雷达天线中微带贴片天线阵列的排布图。In this embodiment, the layout of the microstrip patch antenna array 12 can be as shown in FIG. 4, and FIG. 4 is a layout diagram of the microstrip patch antenna array in the vehicle array radar antenna of the present application.
从图3和图4中可以看出，微带贴片天线阵列12中的天线阵元即为微带贴片天线，由于单个微带贴片天线的增益比较小，无法满足车载雷达天线的性能要求，因此本实施例将微带贴片天线作为微带贴片天线阵列12的天线阵元，以增加车载雷达天线的增益，满足高增益、小角度的需求。As can be seen from FIG. 3 and FIG. 4, the antenna array element in the microstrip patch antenna array 12 is a microstrip patch antenna. Since the gain of a single microstrip patch antenna is relatively small, the performance of the vehicle radar antenna cannot be satisfied. Therefore, in this embodiment, the microstrip patch antenna is used as the antenna array element of the microstrip patch antenna array 12 to increase the gain of the vehicle radar antenna and meet the requirements of high gain and small angle.
本实施例中的车载阵列雷达天线还可以包括：射频电路，上述射频电路与微带馈线33连接，且与上述车灯的电子控制单元集成设置；也就是说，上述射频电路可以与上述车灯的电子控制单元设置在同一块电路板上。The vehicle-mounted array radar antenna in this embodiment may further include: a radio frequency circuit, wherein the radio frequency circuit is connected to the microstrip feed line 33, and is integrated with the electronic control unit of the vehicle lamp; that is, the radio frequency circuit may be combined with the above lamp The electronic control unit is placed on the same circuit board.
本实施例中，上述车载阵列雷达天线可以设置在上述灯罩内划分的至少两个区域中，通过切换开关控制不同区域中的车载阵列雷达天线的打开和关闭；上述切换开关设置在上述射频电路中。In this embodiment, the above-mentioned vehicle-mounted array radar antenna may be disposed in at least two regions divided in the lampshade, and the opening and closing of the vehicle-mounted array radar antenna in different regions is controlled by the switch; the switch is disposed in the radio frequency circuit. .
图5为本申请车载阵列雷达天线中天线设置区域的一个实施例的示意图，如图5所示，可以将灯罩划分为至少两个区域，将车载阵列雷达天线设置在不同的区域中，并且在上述射频电路中增设切换开关，通过切换开关控制不同区域中的车载阵列雷达天线的打开和关闭，从而可以实现方向性的调整。5 is a schematic diagram of an embodiment of an antenna setting area in an in-vehicle array radar antenna of the present application. As shown in FIG. 5, the lampshade can be divided into at least two regions, and the in-vehicle array radar antennas are disposed in different regions, and The above-mentioned radio frequency circuit is provided with a switch, and the switch is used to control the opening and closing of the on-board array radar antenna in different areas, thereby achieving directional adjustment.
图5中，将灯罩划分成了4个区域，每个区域中设置一个车载阵列雷达天线，这仅是本实施例的一个示例，在实际实现时，可以根据实际使用情况，确定分区位置和分区数量，本实施例对此不作限定。In FIG. 5, the lampshade is divided into four regions, and an in-vehicle array radar antenna is disposed in each region. This is only an example of the embodiment. In actual implementation, the partition location and the partition may be determined according to actual use conditions. The number is not limited in this embodiment.
本实施例中，上述介质基材13的材质与灯罩11的材质可以相同，这样就无需额外增加材料，降低了对材料的要求，方便安装，适用性更广。In this embodiment, the material of the dielectric substrate 13 and the material of the lamp cover 11 can be the same, so that no additional material is needed, the material requirements are reduced, the installation is convenient, and the applicability is wider.
当然，上述介质基材13也可以采用与灯罩11不同的材质，本实施例对此不作限定，但本实施例以上述介质基材13采用与灯罩11相同的材质为例进行说明。Of course, the dielectric substrate 13 may be made of a material different from that of the globe 11, which is not limited in this embodiment. However, in the present embodiment, the dielectric substrate 13 is made of the same material as the globe 11 as an example.
本实施例中，上述车载阵列雷达天线为拱形天线，上述车载阵列雷达天线的外形结构与上述车灯的外形结构相同。也就是说，本实施例中的车载阵列雷达天线采用车灯的弧形结构。In this embodiment, the above-mentioned vehicle-mounted array radar antenna is an arched antenna, and the outer structure of the above-described vehicle-mounted array radar antenna is the same as that of the above-mentioned vehicle lamp. That is to say, the in-vehicle array radar antenna in this embodiment adopts an arc structure of a vehicle lamp.
现有的相关技术中，阵列雷达天线大多为平面型结构，本实施例中的车载阵列雷达天线可以根据具体的使用环境设计成拱形天线，不破坏载体的外形结构和空气动力学，相比于平面型天线，拱形天线在设计时需要考虑到天线的形状、分布等问题，在设计中要考虑到拱形载体及天线阵元间的互耦效应，以及车载阵列雷达天线的极化和带宽等问题。In the related art, the array radar antennas are mostly planar structures. The vehicle-mounted array radar antennas in this embodiment can be designed as arched antennas according to the specific use environment, without destroying the outer shape structure and aerodynamics of the carrier. For planar antennas, arched antennas need to be designed in consideration of the shape and distribution of the antenna. The mutual coupling effect between the arched carrier and the antenna elements should be considered in the design, as well as the polarization of the vehicle array radar antenna. Bandwidth and other issues.
本实施例使用仿真软件CST对上述车载阵列雷达天线的性能进行仿真，仿真结果可以如图6和图7所示，图6为本申请车载阵列雷达天线3D远场方向图，图7为本申请车载阵列雷达天线2D远场方向图。In this embodiment, the performance of the above-mentioned vehicle array radar antenna is simulated by using the simulation software CST, and the simulation result can be shown in FIG. 6 and FIG. 7. FIG. 6 is a far-field direction diagram of the vehicle array radar antenna 3D of the present application, and FIG. 7 is the present application. Vehicle array radar antenna 2D far field pattern.
图6所示为φ＝0和φ＝90时的3D远场方向图，在2.4G处最大增益可达21.4dBi。图7为φ＝0和φ＝90时的2D远场方向图，角度宽度(3dB)＝18.2deg。从图6和图7可以看出，本申请提供的车载阵列雷达天线可以在小角度避免与其他信号之间的干扰，满足高增益和小角度要求。Figure 6 shows the 3D far-field pattern for φ = 0 and φ = 90. The maximum gain at 2.4G is 21.4 dBi. Fig. 7 is a 2D far-field pattern at φ = 0 and φ = 90, and the angular width (3 dB) = 18.2 deg. As can be seen from FIG. 6 and FIG. 7, the vehicle-mounted array radar antenna provided by the present application can avoid interference with other signals at a small angle, and meets high gain and small angle requirements.
本申请还提供一种车灯，包括：光源、灯罩和本申请图1～图5所示实施例提供的车载阵列雷达天线。The application further provides a vehicle lamp, comprising: a light source, a lamp cover and an on-board array radar antenna provided by the embodiment shown in FIGS. 1 to 5 of the present application.
需要说明的是，在本申请的描述中，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。此外，在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。It should be noted that in the description of the present application, the terms "first", "second" and the like are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" is two or more unless otherwise stated.
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本申请的优选实施方式的范围包括另外的实现方式，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，这应被本申请的实施例所属技术领域的技术人员所理解。Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a particular logical function or process. And the scope of the preferred embodiments of the present application includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an opposite order depending on the functions involved, in the order shown or discussed. It will be understood by those skilled in the art to which the embodiments of the present application pertain.
应当理解，本申请的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或它们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(Programmable Gate Array；以下简称：PGA)，现场可编程门阵列(Field Programmable Gate Array；以下简称：FPGA)等。It should be understood that portions of the application can be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by suitable instructions. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuit, ASIC with suitable combination logic gate, Programmable Gate Array (PGA), Field Programmable Gate Array (FPGA).
本技术领域的普通技术人员可以理解，实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。A person skilled in the art can understand that all or part of the steps carried by the method of the foregoing embodiment can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, one or a combination of the steps of the method embodiments is included.
此外，本申请各个实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.
上述提到的存储介质可以是只读存储器，磁盘或光盘等。The above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like means a specific feature described in connection with the embodiment or example, Structures, materials or features are included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型。While the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the present application. The embodiments are subject to variations, modifications, substitutions and variations.
Claims (8)
- 一种车载阵列雷达天线，其特征在于，所述车载阵列雷达天线嵌在车灯的灯罩中，所述车载阵列雷达天线包括微带贴片天线阵列、介质基材和反射面；The vehicle-mounted array radar antenna is characterized in that the vehicle-mounted array radar antenna is embedded in a lamp cover of a vehicle lamp, and the vehicle-mounted array radar antenna comprises a microstrip patch antenna array, a dielectric substrate and a reflective surface;所述微带贴片天线阵列位于所述介质基材的上表面，与所述介质基材的上表面相连；The microstrip patch antenna array is located on an upper surface of the dielectric substrate and is connected to an upper surface of the dielectric substrate;所述反射面位于所述介质基材的下表面，与所述介质基材的下表面相连。The reflective surface is located on a lower surface of the dielectric substrate and is connected to a lower surface of the dielectric substrate.
- 根据权利要求1所述的车载阵列雷达天线，其特征在于，所述微带贴片天线阵列包括至少两个天线阵元；The on-vehicle array radar antenna according to claim 1, wherein the microstrip patch antenna array comprises at least two antenna elements;每个天线阵元包括辐射元、阻抗变换器和微带馈线；Each antenna element includes a radiating element, an impedance transformer, and a microstrip feed line;所述阻抗变换器的一端与所述辐射元连接，另一端与所述微带馈线连接，用于实现所述辐射元到所述微带馈线的阻抗匹配。One end of the impedance converter is connected to the radiation element, and the other end is connected to the microstrip feed line for impedance matching of the radiation element to the microstrip feed line.
- 根据权利要求1或2所述的车载阵列雷达天线，其特征在于，The vehicle-mounted array radar antenna according to claim 1 or 2, characterized in that所述至少两个天线阵元中各天线阵元之间通过功分网络连接，并采用所述微带馈线馈电。Each of the at least two antenna elements is connected by a power dividing network and fed by the microstrip feeder.
- 根据权利要求1或2所述的车载阵列雷达天线，其特征在于，还包括：射频电路；The on-vehicle array radar antenna according to claim 1 or 2, further comprising: a radio frequency circuit;所述射频电路与所述微带馈线连接，且与所述车灯的电子控制单元集成设置。The radio frequency circuit is connected to the microstrip feeder and is integrated with an electronic control unit of the vehicle lamp.
- 根据权利要求4所述的车载阵列雷达天线，其特征在于，The in-vehicle array radar antenna according to claim 4, wherein所述车载阵列雷达天线设置在所述灯罩内划分的至少两个区域中，通过切换开关控制不同区域中的车载阵列雷达天线的打开和关闭；所述切换开关设置在所述射频电路中。The vehicle-mounted array radar antenna is disposed in at least two regions divided in the lampshade, and controls opening and closing of the vehicle-mounted array radar antennas in different regions by using a switch; the switch is disposed in the radio frequency circuit.
- 根据权利要求1-5任意一项所述的车载阵列雷达天线，其特征在于，The vehicle-mounted array radar antenna according to any one of claims 1 to 5, characterized in that所述介质基材的材质与所述灯罩的材质相同。The material of the dielectric substrate is the same as the material of the lamp cover.
- 根据权利要求1-5任意一项所述的车载阵列雷达天线，其特征在于，The vehicle-mounted array radar antenna according to any one of claims 1 to 5, characterized in that所述车载阵列雷达天线为拱形天线，所述车载阵列雷达天线的外形结构与所述车灯的外形结构相同。The vehicle-mounted array radar antenna is an arched antenna, and the outer structure of the vehicle-mounted array radar antenna is the same as the outer shape of the vehicle light.
- 一种车灯，其特征在于，包括：光源、灯罩和如权利要求1-7任意一项所述的车载阵列雷达天线。A vehicle lamp, comprising: a light source, a lamp cover, and the vehicle-mounted array radar antenna according to any one of claims 1-7.
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| CN201710203752.1A CN107887686B (en) | 2017-03-30 | 2017-03-30 | Vehicle-mounted array radar antanna and car light |
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| TWI681594B (en) * | 2018-09-04 | 2020-01-01 | 明泰科技股份有限公司 | Array antenna and antenna system with variable sensing direction |
| KR102116183B1 (en) * | 2018-09-28 | 2020-05-28 | 제트카베 그룹 게엠베하 | Lamp for vehicle |
| CN111665472A (en) * | 2019-03-06 | 2020-09-15 | 株式会社小糸制作所 | Vehicle lamp and vehicle |
| CN111660915B (en) * | 2019-03-06 | 2023-10-20 | 株式会社小糸制作所 | Vehicle lamp and vehicle |
| CN114361763B (en) * | 2022-01-19 | 2023-07-25 | 四川大学 | Integrated multi-antenna headlight and vehicle |
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| WO2001073890A1 (en) * | 2000-03-28 | 2001-10-04 | Gentex Corporation | Microwave antenna for use in a vehicle |
| EP1739787A1 (en) * | 2005-06-22 | 2007-01-03 | Delphi Technologies, Inc. | Directional antenna using a light reflector |
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