Radar assembly and electronic device

Abstract

The application relates to the technical field of detection radars, and discloses a radar assembly and electronic equipment, the radar assembly comprising a base material, a radiation part and a conductive barrier wall, the base material being provided with a ground feeding part, the radiation part being arranged on one side of the base material and coupled with the ground feeding part to form a radio frequency loop for generating and emitting electromagnetic waves; the conductive barrier wall is arranged on the side of the base material facing the radiation part and is electrically connected with the ground feeding part, the conductive barrier wall is arranged along the circumference of the radiation part and at least surrounds a part of the radiation part, and is used for reflecting the electromagnetic waves on at least part of the circumferential side of the radiation part to the side of the radiation part away from the base material. The electromagnetic waves on the circumferential side of the radiation part are prevented from bypassing the ground feeding part in the base material to the side of the base material away from the radiation part, that is, the back hemisphere radiation of the radiation part is reduced. In the application, the conductive barrier wall is additionally arranged, and the area of the ground feeding part does not need to be increased, so that the back hemisphere radiation of the detection radar can be inhibited while the installation space is small.

Description

Technical Field

[0001] This application relates to the field of radar technology, and more particularly to a radar component and electronic device. Background Technology

[0002] As the core component for signal transmission and reception in a radar system, the antenna's radiation directionality directly affects the system's reliability. Many types of antennas exhibit varying degrees of hemispherical radiation during operation, including microstrip patch antennas, chip-integrated antennas, and various planar antenna structures. Hemispherical radiation causes reflected and interfering signals from the rear environment to be received by the antenna, creating backward interference. This leads to decreased ranging and angle measurement accuracy, and problems such as false triggering and misjudgment.

[0003] In existing technologies, increasing the size of the metal ground plane is usually used to suppress hemispherical radiation. However, this increases the size of the antenna, leading to a larger installation space requirement and making antenna installation difficult. This is especially true for millimeter waves integrated on chips, where the increase in the size of the metal ground plane is difficult to achieve due to constraints such as miniaturization and installation space. Summary of the Invention

[0004] The main objective of this application is to provide a radar component and electronic device that addresses the technical problem that existing techniques for suppressing the rear hemisphere radiation of detection radars cannot simultaneously accommodate miniaturized installation space.

[0005] To achieve the above objectives, this application proposes a radar assembly, the radar assembly comprising: The substrate has a ground feed portion; A radiating section is disposed on one side of the substrate and coupled to the ground feed section to form a radio frequency loop for generating and transmitting electromagnetic waves. A conductive barrier is disposed on the side of the substrate facing the radiating portion and electrically connected to the grounding portion. The conductive barrier is arranged circumferentially around the radiating portion and at least surrounds a portion of the radiating portion, for reflecting at least a portion of the electromagnetic waves around the radiating portion to the side of the radiating portion facing away from the substrate.

[0006] In one embodiment, the conductive barrier is a closed ring structure surrounding the radiating portion.

[0007] In one embodiment, the inner contour shape of the conductive barrier is the same as the outer contour shape of the radiating part; The radiating part has a plurality of radiating edges connected in sequence, and the conductive barrier wall includes a plurality of first walls connected in sequence, each of the first walls being arranged parallel to one of the radiating edges.

[0008] In one embodiment, the distance between each of the first walls and one of the radiating edges is d1, and the operating wavelength of the radiating part is λ, where d1 = λ.

[0009] In one embodiment, the radiating part is rectangular and has four radiating sides, with each pair of adjacent radiating sides connected to form a radiating corner point; The conductive barrier also includes at least one second wall, which is disposed opposite to one of the radiation corner points. The distance from the radiation corner point to the second wall is d2, and the working wavelength of the radiation part is λ, where d2 = λ.

[0010] In one embodiment, the radiating part has a plurality of radiating edges connected in sequence, and the conductive barrier includes a plurality of first walls spaced apart from each other, each first wall being arranged parallel to a radiating edge, and the length of each first wall being greater than the length of the radiating edge corresponding to the first wall.

[0011] In one embodiment, the substrate is provided with a mounting plane, and both the radiating portion and the conductive barrier are disposed on the mounting plane; The conductive barrier wall is set at an angle to the mounting plane facing the radiating part, and the angle is α, where 90°≤α<180°.

[0012] In one embodiment, the height of the conductive barrier is h, and the operating wavelength of the radiating part is λ, where h = λ / 4.

[0013] In one embodiment, the conductive barrier is provided with a first connecting part and a grounding part, the substrate is provided with a second connecting part, the first connecting part and the second connecting part are detachably connected, and the grounding part is electrically connected to the ground feed part.

[0014] In addition, to achieve the above objectives, this application also proposes an electronic device that includes the radar component as described above.

[0015] This application discloses a radar component and an electronic device. The radar component includes: a substrate having a ground feed portion; a radiating portion disposed on one side of the substrate and coupled to the ground feed portion to form a radio frequency loop for generating and emitting electromagnetic waves; and a conductive barrier disposed on the side of the substrate facing the radiating portion and electrically connected to the ground feed portion. The conductive barrier is arranged circumferentially around the radiating portion and at least surrounds a portion of the radiating portion for reflecting at least a portion of the electromagnetic waves around the radiating portion to the side of the radiating portion facing away from the substrate.

[0016] In this application, the radar assembly can be configured with a substrate and a radiating section. A grounding section disposed in the substrate is coupled with the radiating section to form a radio frequency loop for generating and transmitting electromagnetic waves. The radiating section is used to connect to the feed port, and the grounding section is used to connect to the grounding point, thus constituting the basic working structure of the radar assembly. Based on this, a conductive baffle is added, which is disposed in the substrate and electrically connected to the grounding section, and is positioned circumferentially along the radiating section. Thus, electromagnetic waves emitted by the radiating section towards the substrate are blocked by the grounding section and reflected to the side of the radiating section facing away from the substrate. Electromagnetic waves around the periphery of the radiating section are at least partially blocked by the conductive baffle and reflected to the side of the radiating section facing away from the substrate, preventing electromagnetic waves around the periphery of the radiating section from bypassing the grounding section within the substrate to the side of the substrate facing away from the radiating section, i.e., reducing the rear hemisphere radiation of the radiating section. The addition of the conductive baffle in this application does not require increasing the area of ​​the grounding section, thus suppressing the rear hemisphere radiation of the detection radar while also miniaturizing the installation space. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A partial structural schematic diagram of a detection radar in the prior art provided in this application; Figure 2 This is a schematic diagram of the structure of the radar component according to the first embodiment of this application; Figure 3 This is a front view of the first embodiment of the radar component of this application; Figure 4 This is a side view of the first embodiment of the radar component of this application; Figure 5 This is a schematic diagram of the installation of the conductive barrier wall in the first embodiment of the radar component of this application; Figure 6 This is a comparison curve of the full-band front and rear hemisphere radiated power ratio of the radar component in the first embodiment of this application; Figure 7 This is a front view of the second embodiment of the radar component of this application; Figure 8 This is a front view of the third embodiment of the radar component of this application; Figure 9 This is a side view of the fourth embodiment of the radar component of this application; Figure 10 This is a schematic diagram of the installation of the conductive barrier wall according to the fifth embodiment of the radar component of this application; Figure 11 This is a schematic diagram of the installation of the conductive barrier wall in the sixth embodiment of the radar component of this application.

[0020] Explanation of icon numbers: 1. Substrate; 11. Ground feed section; 12. Mounting plane; 2. Radial part; 21. Radial edge; 22. Radial corner point; 3. Conductive barrier; 31. First wall; 32. Second wall; 33. Solder pad; 34. Probe; 35. Insert-type clip.

[0021] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0026] Understandably, antennas, as the core component for signal transmission and reception in radar systems, directly impact system reliability due to their radiation directionality. Many types of antennas exhibit varying degrees of hemispherical radiation during operation, including microstrip patch antennas, chip-integrated antennas, and various planar antenna structures. Hemispherical radiation causes reflected and interfering signals from the rear environment to be received by the antenna, creating backward interference. This leads to decreased ranging and angle measurement accuracy, and problems such as false triggering and misjudgment.

[0027] In existing technologies, increasing the size of the metal ground plane is usually used to suppress hemispherical radiation. However, this increases the size of the antenna, leading to a larger installation space requirement and making antenna installation difficult. This is especially true for millimeter waves integrated on chips, where the increase in the size of the metal ground plane is difficult to achieve due to constraints such as miniaturization and installation space.

[0028] For easier understanding, please refer to Figure 1 , Figure 1 A partial structural schematic diagram of a detection radar in the prior art provided in this application is shown below. Figure 1 As shown, the on-chip antenna is integrated on the chip, along with the chip's radio frequency circuitry, signal processing circuitry, and other components. The chip is mounted on a circuit board via pads, and the circuit board contains a ground plane (i.e., a metal ground plane). Electromagnetic waves emitted by the on-chip antenna backward (towards the circuit board) are blocked by the ground plane and reflected to the side of the on-chip antenna facing away from the circuit board. Electromagnetic waves emitted by the on-chip antenna to the periphery can bypass the ground plane and radiate to the side of the circuit board facing away from the on-chip antenna, thus forming rear hemispherical radiation.

[0029] To address the aforementioned shortcomings, this embodiment provides a radar assembly comprising a substrate and a radiating section. A grounding section within the substrate is coupled to the radiating section to form a radio frequency loop for generating and transmitting electromagnetic waves. The radiating section connects to a feed port, and the grounding section connects to a grounding point, thus constituting the basic working structure of the radar assembly. Furthermore, a conductive baffle is added, positioned within the substrate and electrically connected to the grounding section, with the baffle positioned circumferentially around the radiating section. This ensures that electromagnetic waves emitted by the radiating section towards the substrate are blocked and reflected by the grounding section to the side of the radiating section facing away from the substrate. Electromagnetic waves from the periphery of the radiating section are at least partially blocked and reflected by the conductive baffle to the side facing away from the substrate, preventing electromagnetic waves from the periphery of the radiating section from bypassing the grounding section within the substrate to the side facing away from the radiating section, thereby reducing the rear hemisphere radiation of the radiating section. The addition of the conductive baffle in this application does not require increasing the area of ​​the grounding section, thus suppressing rear hemisphere radiation of the detection radar while also miniaturizing the installation space.

[0030] For ease of understanding, the following is combined with Figures 2 to 11 The radar components provided in the embodiments of this application will be described in detail.

[0031] Reference Figure 2 as well as Figure 3 , Figure 2 This is a schematic diagram of the structure of the radar component according to the first embodiment of this application. Figure 3 This is a front view of the first embodiment of the radar component of this application.

[0032] like Figure 2 As shown, in this embodiment, the radar assembly includes a substrate 1, a radiating part 2, and a conductive barrier 3. The substrate 1 is provided with a ground feed part 11. The radiating part 2 is disposed on one side of the substrate 1 and coupled to the ground feed part 11 to form a radio frequency loop for generating and transmitting electromagnetic waves. The conductive barrier 3 is disposed on the side of the substrate 1 facing the radiating part 2 and is electrically connected to the ground feed part 11. The conductive barrier 3 is arranged along the circumference of the radiating part 2 and at least surrounds a portion of the radiating part 2 for reflecting at least a portion of the electromagnetic waves around the radiating part 2 to the side of the radiating part 2 facing away from the substrate 1.

[0033] It should be understood that the substrate 1 can be a circuit board, which can be a rigid or flexible circuit board, used to support the electrical structure and provide a foundation for installation and wiring. A grounding section 11 can be provided on the substrate 1. The grounding section 11 can be a grounding layer in the circuit board. The grounding layer can be a conductive structure, and its area can be larger than the area of ​​the radiating section 2. The grounding layer can be distributed throughout the entire circuit board or in a local area of ​​the circuit board. The radiating section 2 can be a conductive metal patch. The radiating section 2 is located on the side of the substrate 1 facing the signal transmission. The radiating section 2 and the grounding section 11 together form a complete radio frequency loop, generating and transmitting electromagnetic waves under power excitation to realize the radar signal transmission and reception function.

[0034] It should also be understood that the conductive barrier 3 can be a wall structure made of conductive materials such as metal. The conductive barrier 3 is set on the side of the substrate 1 facing the radiating part 2 and is electrically connected to the grounding part 11. The conductive barrier 3 can be arranged around the circumference of the radiating part 2 and at least surround a part of the radiating part 2, which can block and reflect the electromagnetic waves emitted by the radiating part 2 to the periphery. When the radiating part 2 is working, the electromagnetic waves emitted towards the substrate 1 can be blocked and reflected by the grounding part 11 to the side of the radiating part 2 away from the substrate 1. The electromagnetic waves emitted by the radiating part 2 to the periphery can be blocked and reflected by the conductive barrier 3 to the side of the radiating part 2 away from the substrate 1. This can reduce the situation where electromagnetic waves bypass the grounding part 11 and reach the side of the substrate 1 away from the radiating part 2, effectively reducing the rear hemisphere radiation of the radiating part 2. By setting the conductive barrier 3, the suppression of rear hemisphere radiation can be achieved without increasing the area of ​​the grounding part 11. This allows the radar assembly to maintain good radiation directionality while adapting to a smaller installation space and meeting the needs of compact equipment.

[0035] It should be noted that the conductive barrier 3 needs to be electrically connected to the grounding portion 11 of the substrate 1 to achieve grounding. After grounding, the conductive barrier 3 can form a continuous conductive structure with the grounding portion 11 at the same potential, forming a stable electromagnetic reflection boundary, effectively reflecting the electromagnetic waves around the radiating portion 2 to the side of the radiating portion 2 facing away from the substrate 1.

[0036] It should also be noted that the conductive barrier 3 can be set around the radiating part 2 and extend along the periphery of the radiating part 2. The conductive barrier 3 can surround a part of the radiating part 2 or the entire area of ​​the radiating part 2. For example, the conductive barrier 3 can be set in a C-shape and partially surround the radiating part 2. The C-shaped conductive barrier 3 can reflect part of the electromagnetic waves around the radiating part 2.

[0037] Please refer to Figure 3 The conductive barrier 3 is a closed ring structure surrounding the radiating part 2.

[0038] It is understood that a closed ring structure refers to a closed structure where the conductive barrier 3 is entirely hollow and without gaps, including shapes such as frame, circular ring, and elliptical ring. It can completely surround the radiating part 2 circumferentially without any through gaps or breaks that could cause lateral leakage of electromagnetic waves. The conductive barrier 3 of the closed ring structure is electrically connected to the ground feed portion 11 of the substrate 1. Due to its continuous closed ring shape, it can intercept electromagnetic waves propagating from the radiating part 2 in all lateral directions to the greatest extent possible, reflecting all lateral electromagnetic waves to the side of the radiating part 2 facing away from the substrate 1. This completely eliminates the possibility of electromagnetic waves propagating circumferentially around the ground feed portion 11 to the side of the substrate 1 facing away from the radiating part 2, thereby maximizing the suppression of rear hemisphere radiation and further improving the front-to-rear hemisphere radiation power ratio and radiation directionality of the radar assembly. Meanwhile, the closed-loop conductive barrier 3 has a regular layout, which facilitates uniform processing, installation and grounding connection. While achieving excellent shielding and reflection effect, it can still maintain the compact structure of the radar component, adapt to the miniaturized installation requirements, and have a stable cooperation relationship with the substrate 1, the ground feed part 11 and the radiating part 2, and can maintain consistent rear hemisphere suppression performance across the entire operating frequency band.

[0039] Furthermore, in order to make the conductive barrier 3 uniformly reflect the lateral electromagnetic waves corresponding to each radiating edge 21 of the radiating part 2, the inner contour shape of the conductive barrier 3 is the same as the outer contour shape of the radiating part 2. The radiating part 2 has a plurality of radiating edges 21 connected in sequence, and the conductive barrier 3 includes a plurality of first walls 31 connected in sequence, each of the first walls 31 being arranged parallel to one of the radiating edges 21.

[0040] It is understandable that the inner contour shape of the conductive barrier 3 can be the same as the outer contour shape of the radiating part 2, so that the conductive barrier 3 and the radiating part 2 maintain a uniform relative distance. The radiating part 2 can have multiple radiating edges 21 connected in sequence. The radiating edges 21 can be arc-shaped edges or straight edges. The conductive barrier 3 can include multiple first walls 31 connected in sequence. Each first wall 31 is arranged parallel to a radiating edge 21, so that the conductive barrier 3 can be evenly distributed around the circumference of the radiating part 2.

[0041] It should be noted that the outer contour of the radiating part 2 can be circular, elliptical, polygonal, etc., and correspondingly, the inner contour of the conductive barrier 3 is the same as the outer contour of the radiating part 2. For ease of understanding, let's take... Figure 3 For example, Figure 3 The outer contour of the radiating part 2 and the inner contour of the conductive barrier 3 shown are both rectangular. The radiating part 2 has two short radiating sides 21 and two long radiating sides 21. The conductive barrier 3 has two short walls and two long walls. The two short radiating sides 21 are parallel to the two short walls, and the two long radiating sides 21 are parallel to the two long walls. This arrangement allows the conductive barrier 3 to form a uniform reflection of the lateral electromagnetic waves corresponding to each radiating side 21 of the radiating part 2, avoiding uneven reflection effects caused by local spacing differences.

[0042] Further, please refer to Figure 3 The distance between each of the first wall 31 and a corresponding radiating edge 21 is d1, and the working wavelength of the radiating part 2 is λ, where d1 = λ.

[0043] It should be noted that the operating wavelength λ refers to the propagation wavelength of electromagnetic waves in free space (air) at the central operating frequency of the radiating part 2.

[0044] It should also be noted that this distance relationship is based on the optimized design of the electromagnetic radiation characteristics of the radiating part 2. When the distance between the first wall 31 and the radiating edge 21 is maintained at the working wavelength λ, the conductive barrier 3 can achieve the best reflection phase and field strength coupling effect on the electromagnetic waves emitted laterally by each radiating edge 21 of the radiating part 2. Specifically, at this distance, the electromagnetic waves reflected by the barrier and the electromagnetic waves directly radiated by the radiating part 2 are superimposed in phase in the forward direction, effectively enhancing the forward radiation intensity of the side of the radiating part 2 facing away from the substrate 1; at the same time, it forms efficient constraint and cancellation for the lateral and rearward electromagnetic waves, significantly improving the radiation pattern characteristics of the radar component and further enhancing the suppression ratio of the rear hemisphere radiation. That is, it can both suppress the rear hemisphere radiation and enhance the front hemisphere radiation.

[0045] Further, please refer to Figure 4 , Figure 4 This is a side view of the first embodiment of the radar component of this application.

[0046] like Figure 4 As shown, the height of the conductive barrier 3 is h, and the working wavelength of the radiating part 2 is λ, where h = λ / 4.

[0047] It should be noted that this height parameter is optimized based on the principles of electromagnetic reflection and impedance matching. The core purpose is to enable the conductive barrier 3 to form a stable and efficient reflection boundary. Specifically, setting the height h of the conductive barrier 3 to λ / 4 allows the electromagnetic waves radiated laterally by the radiating part 2 to be reflected by the conductive barrier 3 and then superimposed with the electromagnetic waves in the main radiation direction (i.e., the side of the radiating part 2 facing away from the substrate 1), thereby enhancing the radiation intensity in the main radiation direction.

[0048] It should also be noted that this height can effectively block electromagnetic waves from the radiating part 2 from diffracting through the conductive barrier 3 to the area of ​​the substrate 1 facing away from the radiating part 2, thereby reducing the radiation in the rear hemisphere. If the height of the conductive barrier 3 is too low, it will not be able to block the diffraction of electromagnetic waves sufficiently, and the suppression effect on rearward radiation will be poor. If the height is too high, although the suppression effect is similar, it will unnecessarily increase the overall structural thickness, occupy space, and is not conducive to miniaturization design.

[0049] Further, please refer to Figure 5 , Figure 5 This is a schematic diagram of the installation of the conductive barrier 3 in the first embodiment of the radar component of this application.

[0050] In this embodiment, the conductive barrier 3 is connected to the substrate 1 via pads 33 and electrically connected to the ground feed section 11. This connection can be achieved through multiple points or a continuous connection. Connecting the conductive barrier 3 to the ground feed section 11 via pads 33 ensures a low-impedance, stable, and reliable electrical path, guaranteeing effective grounding of the conductive barrier 3 and forming a stable electromagnetic reflection boundary to suppress hemispherical radiation. A continuous connection further reduces connection impedance, preventing uneven local potential or poor induced current discharge due to insufficient connection points, ensuring uniform overall potential of the conductive barrier 3, and improving electromagnetic reflection performance and structural connection reliability.

[0051] Further, please refer to Figure 6 , Figure 6 This is a comparison curve of the full-band front and rear hemisphere radiated power ratio of the radar component in the first embodiment of this application. like Figure 6 As shown in the figure, there are two curves. The dashed line represents the ratio of the front and rear hemisphere radiation power of the radar component when it is not optimized, that is, when the conductive barrier 3 structure of this application is not set. The solid line represents the ratio of the front and rear hemisphere radiation power of the radar component after optimization, that is, after setting the conductive barrier 3 structure of this application.

[0052] It should be noted that the horizontal axis in the diagram corresponds to the entire operating frequency band of the radar component, and the specific data on the horizontal axis is hidden for the sake of simplicity. The vertical axis represents the ratio of forward and backward radiated power in dB. This indicator is a core performance parameter of the radar antenna pattern, used to characterize the ratio of the forward radiated power of the radar component to the backward radiated power in the rear hemisphere. The higher the ratio, the more concentrated the forward radiated energy of the radar component and the better the suppression effect of the rear hemisphere radiation.

[0053] Depend on Figure 6 It can be seen that, across the entire operating frequency band, the unoptimized scheme without the conductive barrier 3 maintains a front-to-back hemisphere radiation power ratio of only about 8dB, indicating that the rear hemisphere of the radar component has a higher proportion of radiated energy and poor radiation directionality. In contrast, the optimized scheme with the conductive barrier 3 structure of this application maintains a front-to-back hemisphere radiation power ratio of over 14dB, which is about 6dB higher than the unoptimized scheme. This shows that the conductive barrier 3 structure of this application can effectively suppress the rear hemisphere radiation of the radar component, significantly improve the concentration of forward radiated energy, and significantly optimize the radiation directionality and operating performance of the radar component, thus verifying the effectiveness and reliability of the technical solution of this application.

[0054] Furthermore, based on the first embodiment, a second embodiment of this application is proposed, please refer to... Figure 7 , Figure 7 This is a front view of a second embodiment of the radar component of this application.

[0055] like Figure 7 As shown, in this embodiment, the radiating part 2 is rectangular and has four radiating sides 21. Every two adjacent radiating sides 21 are connected to form a radiating corner point 22. The conductive barrier 3 further includes at least one second wall 32, which is disposed opposite to a radiation corner point 22. The distance from the radiation corner point 22 to the second wall 32 is d2, and the working wavelength of the radiation part 2 is λ, where d2=λ.

[0056] It should be noted that, as shown in the first embodiment, the distance between each of the first wall 31 and a corresponding radiating edge 21 is d1, and the operating wavelength of the radiating part 2 is λ, where d1 = λ. In this embodiment, the outer contour of the radiating part 2 is rectangular, therefore the radiating part 2 has four radiating edges 21, and every two adjacent radiating edges 21 are connected to form a radiating corner point 22. By making d1 = λ, the conductive barrier 3 can achieve optimal reflection phase and field strength coupling effect on the electromagnetic waves laterally emitted by each radiating edge 21 of the radiating part 2. However, at the radiation corner 22, the electromagnetic wave radiation direction is significantly different from that of the radiation edge 21. If only the first wall 31 parallel to the radiation edge 21 is used, it is difficult to form a matching and effective reflection constraint for the electromagnetic waves radiated outward from the radiation corner 22. Therefore, in this embodiment, a second wall 32 is set separately at the position corresponding to the radiation corner 22, and the distance d2 from the radiation corner 22 to the second wall 32 is set to be equal to λ. This ensures that the position of the radiation corner 22 also meets the reflection distance matching the working wavelength, ensuring that the radiation edge 21 and the radiation corner 22 can achieve ideal reflection phase superposition, and comprehensively suppressing the rear hemisphere radiation at each position.

[0057] Please refer to Figure 8 , Figure 8 This is a front view of the third embodiment of the radar component of this application.

[0058] like Figure 8 As shown, the radiating part 2 has a plurality of radiating edges 21 connected in sequence, and the conductive barrier 3 includes a plurality of first walls 31 arranged at intervals from each other. Each first wall 31 is arranged parallel to a radiating edge 21, and the length of each first wall 31 is greater than the length of the radiating edge 21 corresponding to the first wall 31.

[0059] It should be noted that each first wall 31 can be set at a location with high radiation intensity in the radiating part 2. This simplifies the structure, saves materials and space, and allows for directional reflection of lateral electromagnetic waves from locations with high radiation intensity in the radiating part 2.

[0060] For ease of understanding, taking a rectangular radiating section 2 as an example, the outer contour of the radiating section 2 consists of four sequentially connected straight lines, forming four radiating edges 21 (each of the four sides of the rectangle). Each radiating edge 21 is straight, constituting a complete rectangular radiating area. Furthermore, the radiation intensity is uniform across all sides of the rectangular radiating section 2, and the risk of lateral leakage is mainly concentrated in the areas corresponding to the four radiating edges 21. Based on the structural characteristics of the rectangular radiating section 2, the conductive barrier 3 adopts a non-closed structure, not forming a complete ring. Instead, four independent first walls 31 are set corresponding to the four radiating edges 21 of the rectangular radiating section 2, forming a non-closed layout. This simplifies the structure, saving materials and space, while directionally reflecting the lateral electromagnetic waves from the four radiating edges 21 of the radiating section 2 with high radiation intensity.

[0061] Further, please refer to Figure 4 and Figure 9 , Figure 4 This is a side view of the first embodiment of the radar component of this application. Figure 9 This is a side view of the fourth embodiment of the radar component of this application.

[0062] like Figure 9 As shown, the substrate 1 has a mounting surface, and the radiating part 2 and the conductive barrier 3 are both located on the mounting plane 12; The conductive barrier 3 is set at an angle to the side wall facing the radiating part 2 and the mounting plane 12, and the angle is α, 90°≤α<180°.

[0063] It should be noted that when the included angle α is 90°, the side wall of the conductive barrier 3 facing the radiating part 2 is perpendicular to the mounting plane 12. This structure is easy to process and manufacture, and can precisely control the distance between the conductive barrier 3 and each radiating edge 21 of the radiating part 2, ensuring that the spacing between the conductive barrier 3 and the radiating part 2 is uniform and consistent. This allows the conductive barrier 3 to form a uniform and stable reflection effect on the electromagnetic waves emitted laterally by the radiating part 2, effectively reflecting the lateral electromagnetic waves to the forward region. Furthermore, it can make the forward signal radiation of the radar component more concentrated, that is, improve the concentration of forward radiation energy and optimize the radiation directionality of the radar component.

[0064] It should also be noted that when the included angle α is greater than 90° and less than 180°, the conductive barrier 3 is inclined outwards towards the side wall of the radiating part 2, forming a structure similar to a trumpet. This structure can guide and diffuse the electromagnetic waves emitted by the radiating part 2. While ensuring effective suppression of radiation in the rear hemisphere, it can expand the signal radiation range in front of the radar component, improve the detection coverage area of ​​the radar component, and adapt to the radiation requirements under different application scenarios.

[0065] Furthermore, to ensure the convenience and efficiency of replacement and modification operations, the conductive barrier 3 is provided with a first connecting part and a grounding part, the substrate 1 is provided with a second connecting part, the first connecting part and the second connecting part are detachably connected, and the grounding part is electrically connected to the ground feed part 11.

[0066] It is understandable that the first and second connecting parts adopt a detachable connection structure. The core design feature of this detachable connection structure is to facilitate replacement or modification. On the one hand, when the conductive barrier 3 suffers wear and tear or damage due to long-term use, or when it needs to be replaced to accommodate different specifications of radar components, the first and second connecting parts can be quickly disassembled without damaging the substrate 1 or the main structure of the conductive barrier 3. A new conductive barrier 3 can be directly replaced, which significantly reduces maintenance costs and downtime, and avoids the waste of resources caused by partial damage leading to the scrapping of the entire component. On the other hand, modifications can be made to existing radar components without conductive barrier 3. Only the second connecting part needs to be machined at the corresponding position on the substrate 1, and the conductive barrier 3 can be assembled onto the radar component through the first connecting part. This achieves an upgrade in the rear hemisphere radiation suppression performance without requiring significant modifications to the core structure of the radar component, such as the radiating part 2 and the substrate 1.

[0067] It should be noted that, in specific implementation, the first connecting part and the second connecting part may adopt detachable structures such as bolts and clips.

[0068] Specifically, please refer to Figure 10 and Figure 11 , Figure 10 This is a schematic diagram of the installation of the conductive barrier 3 in the fifth embodiment of the radar assembly of this application. Figure 11 This is a schematic diagram of the installation of the conductive barrier 3 in the sixth embodiment of the radar component of this application.

[0069] like Figure 10 As shown, the conductive barrier 3 is detachably connected to the substrate 1 via a bolt structure. The conductive barrier 3 can be made of metal and is L-shaped, forming a first connecting pin at the root. The first connecting pin has a through hole, and the mounting plane 12 serves as the second connecting part and has a threaded hole. Thus, the first connecting pin can be locked and fixed to the mounting plane by a metal screw that matches the threaded hole, realizing the mechanical connection between the conductive barrier 3 and the substrate 1. At the same time, the threaded hole penetrates the ground feed part 11 inside the substrate 1, allowing the metal screw to directly contact and conduct with the ground feed part 11, completing the grounding electrical connection. In this structure, the mechanical connection and electrical grounding are combined into one. The first connecting part includes the first connecting pin and the metal screw, and the second connecting part is the threaded hole, with the metal screw also serving as the grounding part.

[0070] like Figure 11As shown, the conductive barrier 3 uses a plug-in snap-fit ​​35 to achieve a detachable connection with the substrate 1. Specifically, the conductive barrier 3 can be composed of two parts: a metal wall and an L-shaped plastic part connected to the metal wall. The root of the L-shaped plastic part forms a second connection pin, and the bottom of the second connection pin forms a plug-in snap-fit ​​35. This second connection pin with the plug-in snap-fit ​​35 is the first connection part. The mounting plane 12 serves as the second connection part and is provided with snap-fit ​​holes. The plug-in snap-fit ​​35 can be quickly snapped into the snap-fit ​​holes to achieve mechanical locking and fixation. At the same time, a metal probe 34 is formed at the bottom of the metal wall of the conductive barrier 3. The metal probe 34 is the grounding part. The mounting plane 12 has holes so that the metal probe 34 can extend into the substrate 1 and directly contact the grounding part 11 to conduct electricity, completing the grounding connection. This structure can be quickly disassembled and assembled, making the disassembly and assembly operation more convenient and further improving the efficiency of replacement and modification.

[0071] In addition, to achieve the above objectives, embodiments of this application also provide an electronic device, which includes: a radar component as described above.

[0072] It should be emphasized that, since the specific implementation of the electronic device in this embodiment can refer to the above-described radar component embodiment, the electronic device in this embodiment can have all the beneficial effects achieved by the above-described radar component embodiment, and this embodiment will not elaborate on this.

[0073] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A radar assembly, characterized in that, The radar component includes: The substrate has a ground feed portion; A radiating section is disposed on one side of the substrate and coupled to the ground feed section to form a radio frequency loop for generating and transmitting electromagnetic waves. A conductive barrier is disposed on the side of the substrate facing the radiating portion and electrically connected to the grounding portion. The conductive barrier is arranged circumferentially around the radiating portion and at least surrounds a portion of the radiating portion, for reflecting at least a portion of the electromagnetic waves around the radiating portion to the side of the radiating portion facing away from the substrate.

2. The radar assembly as claimed in claim 1, characterized in that, The conductive barrier is a closed ring structure arranged around the radiating part.

3. The radar assembly as described in claim 2, characterized in that, The inner contour shape of the conductive barrier is the same as the outer contour shape of the radiating part; The radiating part has a plurality of radiating edges connected in sequence, and the conductive barrier wall includes a plurality of first walls connected in sequence, each of the first walls being arranged parallel to one of the radiating edges.

4. The radar assembly as described in claim 3, characterized in that, The distance between each of the first wall sections and one of the radiating edges is d1, and the operating wavelength of the radiating part is λ, where d1 = λ.

5. The radar assembly as claimed in claim 3, characterized in that, The radiating part is rectangular in shape and has four radiating sides. Every two adjacent radiating sides are connected to form a radiating corner point. The conductive barrier also includes at least one second wall, which is disposed opposite to one of the radiation corner points. The distance from the radiation corner point to the second wall is d2, and the working wavelength of the radiation part is λ, where d2 = λ.

6. The radar assembly as claimed in claim 1, characterized in that, The radiating part has a plurality of radiating edges connected in sequence, and the conductive barrier includes a plurality of first walls arranged at intervals between each other. Each first wall is arranged parallel to a radiating edge, and the length of each first wall is greater than the length of the radiating edge corresponding to the first wall.

7. The radar assembly as claimed in claim 1, characterized in that, The substrate is provided with a mounting plane, and the radiating part and the conductive barrier are both provided on the mounting plane; The conductive barrier wall is set at an angle to the mounting plane facing the radiating part, and the angle is α, where 90°≤α<180°.

8. The radar assembly as claimed in claim 1, characterized in that, The height of the conductive barrier is h, and the working wavelength of the radiating part is λ, where h = λ / 4.

9. The radar assembly as claimed in claim 1, characterized in that, The conductive barrier wall is provided with a first connecting part and a grounding part, the substrate is provided with a second connecting part, the first connecting part and the second connecting part are detachably connected, and the grounding part is electrically connected to the ground feed part.

10. An electronic device, characterized in that, The electronic device includes a radar component as described in any one of claims 1 to 9.

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