CN107887686B - Vehicle-mounted array radar antanna and car light - Google Patents

The application proposes a kind of vehicle-mounted array radar antanna and car light, and for above-mentioned vehicle-mounted array radar antanna in the lampshade of car light, the vehicle-mounted array radar antanna includes microstrip patch antenna array, media substrate and reflecting surface；The microstrip patch antenna array is located at the upper surface of the media substrate, is connected with the upper surface of the media substrate；The reflecting surface is located at the lower surface of the media substrate, is connected with the lower surface of the media substrate.Vehicle-mounted array radar antanna provided by the present application has low section, and structure is simple, facilitates installation, in the lampshade of car light, increases material without additional, and use micro-strip array antenna, can satisfy high-gain, the demand of low-angle.

Vehicle-mounted array radar antanna and car light

Technical field

This application involves field of automobile more particularly to a kind of vehicle-mounted array radar antannas and car light.

Background technique

A kind of vehicle-mounted millimeter wave Anticollision Radar antenna system in the prior art, including rear burnt antenna, burnt antenna after above-mentioned Open end be fixed with lens unit, slot end is fixed with microstrip antenna；Said lens unit includes diversing lens and receives saturating Mirror, microstrip antenna include transmitting antenna and receiving antenna, the receiving antenna three microband paste feeds arranged side by side by horizontal direction Irradiate receiving lens；Above-mentioned transmitting antenna is sequentially connected power amplifier, directional coupler, voltage controlled oscillator and linear modulation Device, receiving antenna are connected with low noise amplifier, low-pass filter and intermediate frequency output unit in turn；Above-mentioned microstrip antenna uses micro-strip Line feed, micro-strip antenna array is using going here and there and mixed feeding classification is fed.

But the rear burnt antenna in above-mentioned antenna system is actually electromagnetic horn, the gain of electromagnetic horn is higher, but It is that receiving area is small, the reflection coefficient on the face Qi Kou is smaller, and it is general to be seldom used to directly receive, and after being commonly used for SE secondary emission formula The feed of receiving paraboloid is presented, and this rear burnt antenna volume is larger, inconvenience installation will increase entire antenna system Volume causes application environment limited.

Summary of the invention

The purpose of the application is intended to solve at least some of the technical problems in related technologies.

For this purpose, first purpose of the application is to propose a kind of vehicle-mounted array radar antanna.It is provided by the present application vehicle-mounted Array radar antanna has low section, and structure is simple, facilitates installation, in the lampshade of car light, without additional increase material, and And micro-strip array antenna is used, it can satisfy high-gain, the demand of low-angle.

Second purpose of the application is to propose a kind of car light.

To achieve the goals above, the vehicle-mounted array radar antanna of the application first aspect embodiment, comprising: described vehicle-mounted For array radar antanna in the lampshade of car light, the vehicle-mounted array radar antanna includes microstrip patch antenna array, medium base Material and reflecting surface；The microstrip patch antenna array is located at the upper surface of the media substrate, the upper table with the media substrate Face is connected；The reflecting surface is located at the lower surface of the media substrate, is connected with the lower surface of the media substrate.

The vehicle-mounted array radar antanna of the embodiment of the present application has low section, and structure is simple, facilitates installation, embedded in car light In lampshade, increases material without additional, and use micro-strip array antenna, can satisfy high-gain, the demand of low-angle.

To achieve the goals above, the car light of the application second aspect embodiment, comprising: light source, lampshade and as described above Vehicle-mounted array radar antanna.

The additional aspect of the application and advantage will be set forth in part in the description, and will partially become from the following description It obtains obviously, or recognized by the practice of the application.

Detailed description of the invention

The application is above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, in which:

Fig. 1 is the structural schematic diagram of the vehicle-mounted array radar antanna one embodiment of the application；

Fig. 2 is the side view of micro-strip array antenna in the vehicle-mounted array radar antanna of the application；

Fig. 3 is the structural schematic diagram of bay in the vehicle-mounted array radar antanna of the application；

Fig. 4 is the layout viewing of microstrip patch antenna array in the vehicle-mounted array radar antanna of the application；

Fig. 5 is the schematic diagram of antenna setting area one embodiment in the vehicle-mounted array radar antanna of the application；

Fig. 6 is the vehicle-mounted array radar antanna 3D far-field pattern of the application；

Fig. 7 is the vehicle-mounted array radar antanna 2D far-field pattern of the application.

Specific embodiment

Embodiments herein is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and is only used for explaining the application, and should not be understood as the limitation to the application.On the contrary, this The embodiment of application includes all changes fallen within the scope of the spiritual and intension of attached claims, modification and is equal Object.

Fig. 1 is the structural schematic diagram of the vehicle-mounted array radar antanna one embodiment of the application, as shown in Figure 1, above-mentioned vehicle-mounted In the lampshade 11 of car light, above-mentioned vehicle-mounted array radar antanna includes microstrip patch antenna array 12, is situated between array radar antanna Matter substrate 13 and reflecting surface 14；

Wherein, microstrip patch antenna array 12 is located at the upper surface of media substrate 13, the upper surface phase with media substrate 13 Even；

Reflecting surface 14 is located at the lower surface of above-mentioned media substrate 13, is connected with the lower surface of above-mentioned media substrate.

The side view of above-mentioned micro-strip array antenna can be as shown in Fig. 2, Fig. 2 be micro- in the vehicle-mounted array radar antanna of the application Side view with array antenna.

In the present embodiment, above-mentioned microstrip patch antenna array 12 includes at least two bays, and Fig. 3 is that the application is vehicle-mounted The structural schematic diagram of bay in array radar antanna, as shown in figure 3, each bay may include radiation element 31, resistance Resistance parallel operation 32 and microstrip feed line 33；

Wherein, one end of above-mentioned impedance transformer 32 is connect with radiation element 31, and the other end is connect with microstrip feed line 33, is used for Realize that radiation element 31 arrives the impedance matching of microstrip feed line 33.In the present embodiment, the impedance of above-mentioned microstrip feed line 33 can be 50Ohm。

Referring to Fig. 3, connected between each bay by power division network 34 in above-mentioned at least two bay, use is micro- Ribbon feeder 33 is fed.

In the present embodiment, the layout viewing of microstrip patch antenna array 12 can with as shown in figure 4, Fig. 4 for the vehicle-mounted battle array of the application The layout viewing of microstrip patch antenna array in column radar antenna.

It is micro-strip paster antenna from can be seen that the bay in microstrip patch antenna array 12 in Fig. 3 and Fig. 4, Since the gain of single micro-strip paster antenna is smaller, it is unable to satisfy the performance requirement of vehicle radar antenna, therefore the present embodiment Using micro-strip paster antenna as the bay of microstrip patch antenna array 12, to increase the gain of vehicle radar antenna, meet High-gain, the demand of low-angle.

Vehicle-mounted array radar antanna in the present embodiment can also include: radio circuit, and above-mentioned radio circuit and micro-strip are presented Line 33 connects, and integrally disposed with the electronic control unit of above-mentioned car light；That is, above-mentioned radio circuit can be with above-mentioned vehicle The electronic control unit of lamp is arranged on same circuit board.

In the present embodiment, above-mentioned vehicle-mounted array radar antanna be can be set at least two regions that above-mentioned lampshade divides In, pass through the opening and closing of the vehicle-mounted array radar antanna in switching switch control different zones；Above-mentioned switching switch setting In above-mentioned radio circuit.

Fig. 5 is the schematic diagram of antenna setting area one embodiment in the vehicle-mounted array radar antanna of the application, such as Fig. 5 institute Show, lampshade can be divided at least two regions, vehicle-mounted array radar antanna is arranged in different regions, and upper State added in radio circuit switching switch, by switching switch control different zones in vehicle-mounted array radar antanna opening and It closes, so as to realize the adjustment of directionality.

In Fig. 5, lampshade 4 regions are divided into, a vehicle-mounted array radar antanna has been set in each region, this is only One example of the present embodiment can determine district location and number of partitions according to actual use situation in actual implementation, The present embodiment is not construed as limiting this.

In the present embodiment, the material of above-mentioned media substrate 13 can be identical with the material of lampshade 11, thus without additional Increase material, reduces the requirement to material, facilitate installation, applicability is wider.

Certainly, above-mentioned media substrate 13 can also use the material different from lampshade 11, and the present embodiment is not construed as limiting this, But it more than the present embodiment states for media substrate 13 uses material identical with lampshade 11 and is illustrated.

In the present embodiment, above-mentioned vehicle-mounted array radar antanna is conformal antenna, the shape of above-mentioned vehicle-mounted array radar antanna Structure is identical as the contour structures of above-mentioned car light.That is, the vehicle-mounted array radar antanna in the present embodiment is using car light Arcuate structure.

Existing array radar antanna is mostly planarized structure in the related technology, the vehicle-mounted array thunder in the present embodiment Conformal antenna can be designed to according to specifically use environment up to antenna, not destroy the contour structures and aerodynamics of carrier, Compared to planar antenna, conformal antenna design when need in view of antenna shape, distribution the problems such as, to examine in the design The problems such as considering the polarization and bandwidth of the mutual coupling effect and vehicle-mounted array radar antanna between conformal carrier and bay.

The present embodiment is emulated using performance of the simulation software CST to above-mentioned vehicle-mounted array radar antanna, simulation result Can be as shown in Figure 6 and Figure 7, Fig. 6 is the vehicle-mounted array radar antanna 3D far-field pattern of the application, and Fig. 7 is the vehicle-mounted battle array of the application Column radar antenna 2D far-field pattern.

Fig. 6 show phi=0, and when phi=90,3D far-field pattern, maximum gain is up to 21.4dBi at 2.4G.Figure 7 be phi=0, when phi=90,2D far-field pattern, and angular width (3dB)=18.2deg.It can from Fig. 6 and Fig. 7 Out, vehicle-mounted array radar antanna provided by the present application can avoid the interference between other signals in low-angle, meet high increase Benefit and low-angle requirement.

The application also provides a kind of car light, comprising: the vehicle that light source, lampshade and the application FIG. 1 to FIG. 5 illustrated embodiment provide Carry array radar antanna.

It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present application, without It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple " It is two or more.

Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion Point, and the range of the preferred embodiment of the application includes other realization, wherein can not press shown or discussed suitable Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be by the application Embodiment person of ordinary skill in the field understood.

It should be appreciated that each section of the application can be realized with hardware, software, firmware or their combination.Above-mentioned In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (Programmable Gate Array；Hereinafter referred to as: PGA), field programmable gate array (Field Programmable Gate Array；Hereinafter referred to as: FPGA) etc..

Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.

In addition, each functional module in each embodiment of the application can integrate in a processing module, it is also possible to Modules physically exist alone, and can also be integrated in a module with two or more modules.Above-mentioned integrated module Both it can take the form of hardware realization, can also have been realized in the form of software function module.If the integrated module In the form of software function module realize and when sold or used as an independent product, also can store can in a computer It reads in storage medium.

Storage medium mentioned above can be read-only memory, disk or CD etc..

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any One or more embodiment or examples in can be combined in any suitable manner.

Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned Embodiment is changed, modifies, replacement and variant.