CN218215650U - Antenna structure, radar equipment and car - Google Patents
Antenna structure, radar equipment and car Download PDFInfo
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- CN218215650U CN218215650U CN202222759397.5U CN202222759397U CN218215650U CN 218215650 U CN218215650 U CN 218215650U CN 202222759397 U CN202222759397 U CN 202222759397U CN 218215650 U CN218215650 U CN 218215650U
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Abstract
The utility model discloses an antenna structure, radar equipment and car, antenna structure includes: the transmission assembly comprises a substrate, a transmission assembly arranged on the substrate and a coupling assembly arranged on the substrate; the coupling assembly is provided with a mounting groove, the transmission assembly is arranged in the mounting groove, the coupling assembly is provided with a waveguide assembly, the waveguide assembly is provided with an antenna radiation layer, the radiation layer is provided with a radiation part, and the waveguide assembly is connected with the radiation part. The utility model discloses a with waveguide subassembly and transmission assembly, solved the big problem of loss that traditional microstrip antenna substrate brought, moreover because waveguide interface and adjacent waveguide interface mutually perpendicular among the waveguide subassembly to make the isolation between the transmission assembly that the waveguide interface corresponds better.
Description
Technical Field
The utility model discloses radar technical field especially relates to an antenna structure, radar equipment and car.
Background
The existing radar chips are all welded on a PCB (printed circuit board), chip pins adopt a microstrip line or differential line form, and in order to be better connected with the chips, the antenna is generally designed on a board bearing the same base materials of the chips. Or the chip and the antenna are arranged on different layers of the PCB in consideration of heat dissipation and feeder radiation influence, but most of the substrates of the antenna also adopt high-frequency plates.
The high-frequency plate in the industry takes rogers as a first factor at present, mainly causes the plate to have stable electrical property and low loss, but as long as a medium is introduced into a high-frequency signal path, the loss of an antenna is inevitably increased, the radiation increase of the antenna is reduced, the radar action distance is shortened, and the influence on the performance of the radar is large.
SUMMERY OF THE UTILITY MODEL
The utility model provides an antenna structure, radar equipment and car can effectively solve present antenna substrate and adopt high frequency panel to lead to the antenna loss to increase, shorten radar detection distance's problem.
According to an aspect of the present invention, there is provided an antenna structure, the antenna structure comprising: the transmission assembly comprises a substrate, a transmission assembly arranged on the substrate and a coupling assembly arranged on the substrate; the coupling assembly is provided with a mounting groove, the transmission assembly is arranged in the mounting groove, the coupling assembly is provided with a waveguide assembly, the waveguide assembly is provided with an antenna radiation layer, the radiation layer is provided with a radiation part, and the waveguide assembly is connected with the radiation part.
Further, the transmission assembly includes: the transmitting assemblies and the receiving assemblies are arranged in one-to-one correspondence with the mounting grooves.
Furthermore, the waveguide assemblies are arranged in one-to-one correspondence with the mounting grooves.
Further, the waveguide assembly comprises waveguide interfaces connected with the coupling assembly, and projections of two adjacent waveguide interfaces on the substrate are perpendicular to each other in the first direction along the substrate.
Further, the plurality of transmitting groups and the plurality of receiving assemblies respectively comprise two transmission lines, and the two transmission lines form a differential transmission pair.
Further, the transmission component and the coupling component are insulated from each other.
Further, the radiation parts are distributed on the radiation layer in an array.
Further, the transmission assembly further comprises a patch assembly, and a gap is formed between the patch assembly and the coupling assembly so as to couple energy on the transmission assembly to the coupling assembly.
According to the utility model discloses an on the other hand provides a radar equipment, radar equipment includes the utility model discloses any embodiment antenna structure.
According to the utility model discloses an on the other hand provides a car, the car includes the utility model discloses an radar equipment.
The utility model has the advantages of, the utility model discloses a with waveguide subassembly and transmission assembly, solved the big problem of loss that traditional microstrip antenna substrate brought, moreover because waveguide interface and adjacent waveguide interface mutually perpendicular among the waveguide subassembly to make the isolation between the transmission assembly that the waveguide interface corresponds better.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention.
Fig. 2A is a schematic structural diagram of an antenna structure according to an embodiment of the present invention.
Fig. 2B is a schematic structural diagram of an antenna structure according to an embodiment of the present invention.
Fig. 3 is a top view of an antenna structure according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of an antenna structure according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of an antenna structure according to a second embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Referring now to fig. 1, fig. 1 is an antenna structure provided by a first embodiment of the present invention, the antenna structure includes: a substrate 10, a transmission component 40, a coupling component 20, and a waveguide component 30.
Illustratively, the transmission module 40 is disposed on the substrate 10, the transmission module 40 includes a plurality of transmission modules and a plurality of reception modules, wherein the transmission modules and the reception modules respectively include two transmission lines 43, an impedance matching circuit 42 and a patch module 41, the two transmission lines 43 form a differential transmission pair, the two transmission lines 43 are connected to the impedance matching circuit 42, and the impedance matching circuit 42 is connected to the patch module 41.
It should be noted that the main function of the impedance matching circuit 42 is to implement impedance transformation, and the objective is to transform the source impedance to the impedance point required by the design.
Referring to fig. 2A and 2B, for example, the coupling component 20 is provided with a mounting groove 21, the transmission component 40 is disposed in the mounting groove 21, and a gap is provided between the patch component 41 and the coupling component 20 to couple energy on the transmission component 40 to the coupling component 20. In some embodiments, the plurality of transmitting groups and the plurality of receiving assemblies are disposed in one-to-one correspondence with the mounting slots 21.
Illustratively, a waveguide assembly 30 is disposed on the coupling assembly 20, an antenna radiation layer 50 is disposed on the waveguide assembly 30, a radiation portion 51 is disposed on the radiation layer, and the waveguide assembly 30 is connected to the radiation portion 51. In some embodiments, the waveguide assembly 30 includes a waveguide channel and waveguide interfaces 31, the waveguide interfaces 31 are located at two ends of the waveguide channel, and the waveguide assembly 30 and the mounting grooves 21 are arranged in a one-to-one correspondence. Specifically, the waveguide interface 31 is disposed in a projection area formed on the substrate 10, the chip component 41 is disposed in the projection area, and the waveguide interface 31 is disposed in an area where the mounting groove 21 is located on the coupling component 20, that is, the waveguide interface 31 is disposed above the mounting groove 21.
Illustratively, the transmission component 40 and the coupling component 20 are insulated from each other.
Referring to fig. 3 and 4 in combination, the antenna structure further includes: the antenna radiation layer 50 is arranged on the waveguide assembly 30, a radiation part 51 is arranged on the radiation layer, and the waveguide assembly 30 is connected with the radiation part 51. In some embodiments, the radiation portions 51 are disposed on the radiation layer in an array distribution. The radiation part 51 is a trumpet-shaped radiation port, and the radiation port is connected with the waveguide interface 31, and it can be understood that the radiation port is connected with the waveguide interface 31 and is communicated with another waveguide interface 31 through a waveguide channel. When the antenna structure works, energy is coupled and transmitted between the patch component 41 and the coupling component 20, is transmitted to the radiation part 51 through the waveguide component 30, and is emitted, at this time, the transmission component 40 is a transmission component, and when a signal needs to be received, the radiation part 51 receives the signal, transmits the signal to the coupling component 20 through the waveguide component 30, and is coupled to the patch component 41 through the coupling component 20.
In the first embodiment, the waveguide assembly 30 and the transmission assembly 40 are used to solve the problem of large loss caused by the conventional microstrip antenna substrate, and the waveguide interface 31 in the waveguide assembly 30 is perpendicular to the adjacent waveguide interface 31, so that the transmission assembly 40 corresponding to the waveguide interface 31 has good isolation.
Fig. 5 is an antenna structure provided by the second embodiment of the present invention, the antenna structure includes: a substrate 10, a transmission component 40, a coupling component 20, and a waveguide component 30.
Illustratively, the transmission module 40 is disposed on the substrate 10, the transmission module 40 includes a plurality of transmission modules and a plurality of reception modules, wherein the transmission modules and the reception modules respectively include two transmission lines 43, an impedance matching circuit 42 and a patch module 41, the two transmission lines 43 form a differential transmission pair, the two transmission lines 43 are connected to the impedance matching circuit 42, and the impedance matching circuit 42 is connected to the patch module 41.
It should be noted that the main function of the impedance matching circuit 42 is to implement impedance transformation, and the objective is to transform the source impedance to the impedance point required by the design.
Illustratively, the coupling component 20 is provided with a mounting groove 21, the transmission component 40 is disposed in the mounting groove 21, and a gap is provided between the patch component 41 and the coupling component 20 to couple energy on the transmission component 40 to the coupling component 20. In some embodiments, the plurality of transmitting groups and the plurality of receiving assemblies are disposed in one-to-one correspondence with the mounting grooves 21.
Illustratively, a waveguide assembly 30 is disposed on the coupling assembly 20, an antenna radiation layer 50 is disposed on the waveguide assembly 30, a radiation portion 51 is disposed on the radiation layer, and the waveguide assembly 30 is connected to the radiation portion 51. In some embodiments, the waveguide assembly 30 includes a waveguide channel and waveguide interfaces 31, the waveguide interfaces 31 are located at two ends of the waveguide channel, and the waveguide assembly 30 and the mounting grooves 21 are arranged in a one-to-one correspondence. Specifically, the waveguide interface 31 is disposed in a projection region formed on the substrate 10, the chip component 41 is disposed in the projection region, and the waveguide interface 31 is disposed in a region of the coupling component 20 where the mounting groove 21 is located, that is, the waveguide interface 31 is disposed above the mounting groove 21.
Illustratively, the transmission component 40 and the coupling component 20 are insulated from each other.
Exemplarily, the antenna structure further comprises: the waveguide module comprises an antenna radiation layer 50, wherein the antenna radiation layer 50 is arranged on the waveguide module 30, a radiation part 51 is arranged on the radiation layer, and the waveguide module 30 is connected with the radiation part 51. In some embodiments, the radiation portions 51 are disposed on the radiation layer in an array. The radiation part 51 is a trumpet-shaped radiation port, and the radiation port is connected with the waveguide interface 31, and it can be understood that the radiation port is connected with the waveguide interface 31 and is communicated with another waveguide interface 31 through a waveguide channel. When the antenna structure works, energy is coupled and transmitted between the patch component 41 and the coupling component 20, is transmitted to the radiation part 51 through the waveguide component 30, and is emitted, at this time, the transmission component 40 is a transmission component, and when a signal needs to be received, the radiation part 51 receives the signal, transmits the signal to the coupling component 20 through the waveguide component 30, and is coupled to the patch component 41 through the coupling component 20.
Illustratively, in the first direction X along the substrate 10, the projections of two adjacent waveguide interfaces 31 on the substrate 10 are perpendicular to each other. Because the output port of the chip (i.e., the radiation patch or the transmission line 43 of the transmission component 40) is closer, mutual interference between the transmission components 40 is very large, in order to reduce coupling between signal channels and increase channel isolation, the waveguide interfaces 31 of adjacent transmission components 40 can be orthogonally placed, signal cross polarization can increase isolation, and simulation verification proves that the signal isolation adopting cross placement improves 24dB.
In the second embodiment, the waveguide assembly 30 and the transmission assembly 40 are arranged, so that the problem of large loss caused by the conventional microstrip antenna substrate is solved, and the waveguide interface 31 in the waveguide assembly 30 is perpendicular to the adjacent waveguide interface 31, so that the isolation between the transmission assemblies 40 corresponding to the waveguide interfaces 31 is good.
The utility model provides a radar equipment, radar equipment includes above-mentioned arbitrary embodiment antenna structure, the chip of radar structure adopts the TEF8232 who adopts NXP.
The utility model also provides a car, in some embodiments, the preceding radar equipment of car all adopts above-mentioned embodiment with the back radar equipment.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. An antenna structure, comprising: the transmission assembly comprises a substrate, a transmission assembly arranged on the substrate and a coupling assembly arranged on the substrate;
the coupling assembly is provided with a mounting groove, the transmission assembly is arranged in the mounting groove, the coupling assembly is provided with a waveguide assembly, the waveguide assembly is provided with an antenna radiation layer, the radiation layer is provided with a radiation part, and the waveguide assembly is connected with the radiation part.
2. The antenna structure according to claim 1, characterized in that the transmission component comprises: the transmitting assemblies and the receiving assemblies are arranged in one-to-one correspondence with the mounting grooves.
3. The antenna structure according to claim 2, characterized in that the waveguide assemblies are arranged in one-to-one correspondence with the mounting slots.
4. An antenna structure according to claim 2, characterized in that the waveguide assembly comprises waveguide interfaces connected to a coupling assembly, the projections of two adjacent waveguide interfaces onto the substrate being perpendicular to each other in the first direction along the substrate.
5. The antenna structure according to claim 2, characterized in that said plurality of transmitting groups and said plurality of receiving components each comprise two transmission lines, the two transmission lines forming a differential transmission pair.
6. The antenna structure according to claim 1, characterized in that the transmission component and the coupling component are mutually insulated.
7. The antenna structure according to claim 1, characterized in that the radiating portions are arranged in an array on the radiating layer.
8. The antenna structure of claim 1, wherein the transmission component further comprises a patch component, and a gap is provided between the patch component and the coupling component to couple energy on the transmission component to the coupling component.
9. A radar device, characterized in that it comprises an antenna arrangement according to any one of claims 1-8.
10. An automobile characterized by comprising the radar apparatus of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222759397.5U CN218215650U (en) | 2022-10-19 | 2022-10-19 | Antenna structure, radar equipment and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222759397.5U CN218215650U (en) | 2022-10-19 | 2022-10-19 | Antenna structure, radar equipment and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218215650U true CN218215650U (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222759397.5U Active CN218215650U (en) | 2022-10-19 | 2022-10-19 | Antenna structure, radar equipment and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218215650U (en) |
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2022
- 2022-10-19 CN CN202222759397.5U patent/CN218215650U/en active Active
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