Antenna and radar

Abstract

The utility model provides an antenna and a radar, and relates to the technical field of communication. The antenna comprises: a mounting frame having a mounting cavity; the mounting plate is arranged in the mounting cavity; the positioning plate is detachably connected with the mounting plate and provided with a plurality of positioning grooves, the positioning grooves are distributed at intervals in the first direction, and the positioning grooves extend in the second direction; and the plurality of antenna units are distributed at intervals along the first direction, the antenna units extend along the second direction, and one positioning groove can be detachably connected with one antenna unit. The installation precision of the antenna can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and more specifically, to an antenna and a radar. Background Technology

[0002] In radio communication systems, antennas are an essential component, allowing devices to transmit and receive wireless signals. They are the parts in electronic devices used to transmit or receive electromagnetic waves. However, the installation accuracy of existing antennas needs improvement.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] This disclosure provides an antenna and radar that can improve the installation accuracy of the antenna.

[0005] According to one aspect of this disclosure, an antenna is provided, comprising:

[0006] Mounting frame with mounting cavity;

[0007] A mounting plate is disposed in the mounting cavity;

[0008] The positioning plate is detachably connected to the mounting plate and has multiple positioning grooves, which are spaced apart along a first direction and extend along a second direction.

[0009] Multiple antenna elements are spaced apart along the first direction, the antenna elements extend along the second direction, and a positioning slot can be detachably connected to one of the antenna elements.

[0010] In one embodiment of this disclosure, there are multiple positioning plates, which are spaced apart along a second direction, and an antenna unit is located in the positioning slot of each of the positioning plates.

[0011] In one embodiment of this disclosure, the flatness of the bottom of each of the positioning grooves is less than 0.02 mm.

[0012] In one embodiment of this disclosure, the flatness of the antenna array formed by each of the antenna elements is less than 0.1 mm.

[0013] In one embodiment of this disclosure, the side wall of the positioning slot is provided with a slot, and the side wall of the antenna unit is provided with a block, the block being able to cooperate with the slot.

[0014] In one embodiment of this disclosure, the mounting frame includes a retaining wall and a plurality of support beams;

[0015] The retaining wall encloses the installation cavity;

[0016] Multiple support beams are located in the mounting cavity and are spaced apart along the second direction; the support beams extend along the first direction and are used to support the mounting plate, and both ends of the support beams are connected to the retaining wall.

[0017] In one embodiment of this disclosure, the mounting frame further includes a plurality of reinforcing rods extending along the second direction; at least a portion of the reinforcing rods are located between two adjacent support beams and are connected to the support beams.

[0018] In one embodiment of this disclosure, the sidewall of the retaining wall has a connecting plate, and the mounting plate is connected to the connecting plate.

[0019] In one embodiment of this disclosure, there are multiple mounting plates, which are spaced apart in the mounting cavity along the second direction.

[0020] According to another aspect of this disclosure, a radar is provided, comprising the antenna described in any of the above embodiments.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0023] Figure 1 This is a schematic diagram of the antenna structure in one embodiment of the present disclosure.

[0024] Figure 2 This is a schematic diagram of the antenna structure after hiding part of the antenna element in one embodiment of this disclosure.

[0025] Figure 3 This is a schematic diagram of the antenna structure after all antenna elements are hidden in one embodiment of this disclosure.

[0026] Figure 4 This is an assembly diagram of the positioning plate and the antenna unit in one embodiment of this disclosure.

[0027] Figure 5This is a schematic diagram of a positioning plate in one embodiment of this disclosure.

[0028] Figure 6 This is a schematic diagram of the antenna structure in one embodiment of the present disclosure, intended to illustrate the back structure of the antenna.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Mounting frame; 11. Retaining wall; 12. Support beam; 13. Reinforcing rod; 14. Connecting plate; 2. Mounting plate; 3. Positioning plate; 31. Positioning slot; 4. Antenna unit; X, First direction; Y, Second direction. Detailed Implementation

[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0032] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0033] This disclosure provides a radar. The radar may include a transmitter, a receiver, an antenna, and a display. The antenna may be a transmitting antenna, a receiving antenna, or an integrated transmitting and receiving antenna. Thus, after the transmitter emits electromagnetic waves through the transmitting antenna, the electromagnetic waves are reflected by the detected object during propagation. The reflected electromagnetic waves are received by the receiving antenna and transmitted to the receiver for processing. Parameters of the detected object (such as the distance, azimuth, and height between the detected object and the radar) are extracted, and finally, the parameters of the detected object are displayed on the display to achieve the radar's detection function.

[0034] Antenna installation typically involves bonding the antenna element to an aluminum honeycomb panel using structural adhesive, and then installing the aluminum honeycomb panel within a frame. However, this installation method suffers from poor installation accuracy and high difficulty, and the use of structural adhesive makes it inconvenient to disassemble the antenna element.

[0035] To address the aforementioned problems, in one embodiment of this disclosure, see [link to relevant documentation] Figure 1-Figure 5 The antenna includes a mounting frame 1, a mounting plate 2, a positioning plate 3, and multiple antenna elements 4. The mounting frame 1 has a mounting cavity; the mounting plate 2 is disposed within the mounting cavity; the positioning plate 3 is detachably connected to the mounting plate 2 and has multiple positioning slots 31, which are spaced apart along a first direction X and extend along a second direction Y; the multiple antenna elements 4 are spaced apart along the first direction X and extend along the second direction Y, and each positioning slot 31 can be detachably connected to an antenna element 4. The first direction X and the second direction Y are perpendicular to each other.

[0036] Thus, when installing antenna unit 4, the positioning plate 3 can be installed on the mounting plate 2, and then the antenna unit 4 can be detachably connected to the positioning slot 31. Since the positioning slot 31 on the positioning plate 3 has an auxiliary positioning function for the antenna unit 4, the installation accuracy of the antenna unit 4 can be improved and the installation difficulty reduced. At the same time, it also facilitates the equidistant installation of multiple antenna units 4, improving the installation quality of the antenna.

[0037] In one embodiment of this disclosure, antenna element 4 may be a microstrip antenna element.

[0038] In one embodiment of this disclosure, the mounting plate 2 can be an aluminum honeycomb panel or other types of plate structures.

[0039] In one embodiment of this disclosure, see Figure 6 The mounting frame 1 includes a retaining wall 11 and multiple supporting beams 12. The retaining wall 11 encloses a mounting cavity. The cross-sectional shape of the retaining wall 11 can be triangular, quadrilateral, pentagonal, circular, or other geometric shapes. In one example, the cross-sectional shape of the retaining wall 11 can be quadrilateral. Specifically, the retaining wall 11 may include four baffles, which can be connected end-to-end as a whole by welding, screwing, bonding, mortise and tenon joints, etc., and enclose the mounting cavity.

[0040] Multiple support beams 12 are located in the mounting cavity and are spaced apart along the second direction Y. The support beams 12 extend along the first direction X and are used to support the mounting plate 2. Both ends of the support beams 12 are connected to the retaining wall 11. In one example, the cross-sectional shape of the support beams 12 can be triangular, quadrilateral, hexagonal, circular, or other geometric shapes. The support beams 12 can be solid or hollow. There are two support beams 12, which are spaced apart along the second direction Y. Each support beam 12 extends along the first direction X, and both ends of the support beam 12 are connected to the inner side of the retaining wall 11. Specifically, they can be fixed to the retaining wall 11 by welding, bonding, screw connection, etc., to increase the structural strength of the retaining wall 11.

[0041] In one embodiment of this disclosure, the mounting frame 1 further includes a plurality of reinforcing rods 13 extending along a second direction Y; at least some of the reinforcing rods 13 are located between two adjacent support beams 12 and are connected to the support beams 12. Thus, the reinforcing rods 13 can further improve the structural strength of the mounting frame 1, thereby improving the reliability of the antenna.

[0042] In one example, see Figure 6 There are five reinforcing rods 13. Two reinforcing rods 13 are connected between a support beam 12 and a retaining wall 11, and the remaining three reinforcing rods 13 are connected between two adjacent support beams 12. The two reinforcing rods 13 located between a support beam 12 and a retaining wall 11 are spaced apart along the first direction X, and the three reinforcing rods 13 located between two adjacent support beams 12 are spaced apart along the first direction X. The reinforcing rods 13 can be fixedly connected to the support beams 12 or the retaining wall 11 by welding, mortise and tenon joints, adhesive bonding, snap-fitting, screw connection, etc., to form a structurally stable installation frame 1.

[0043] In one embodiment of this disclosure, see Figure 6 The retaining wall 11 has a connecting plate 14 on its side wall, and the mounting plate 2 is connected to the connecting plate 14. In this way, the connecting plate 14 can improve the connection strength between the mounting plate 2 and the retaining wall 11.

[0044] For example, the connecting plate 14 can be a right-angle plate or a flat plate. The connecting plate 14 can be fixedly connected to the retaining wall 11 by means of connection, screw connection, plug-in connection, etc. The connecting plate 14 is located on the side of the mounting plate 2 away from the antenna element 4, and can be connected to the mounting plate 2 by bolts or screws to facilitate the replacement and maintenance of the mounting plate 2. At the same time, the connecting plate 14 can provide support for the mounting plate 2 to improve the connection stability.

[0045] In one embodiment of this disclosure, there are multiple mounting plates 2, which are spaced apart along the second direction Y in the mounting cavity. This not only facilitates the installation of the positioning plate 3 and the antenna unit 4, but also reduces the overall weight of the antenna and lowers the installation difficulty.

[0046] In one example, see Figure 2 and Figure 6 There are two mounting plates 2, which are spaced apart in the mounting cavity along the second direction Y. Each mounting plate 2 is a rectangular plate structure and is an aluminum honeycomb panel.

[0047] In one embodiment of this disclosure, see Figures 2-4There are multiple positioning plates 3, which are spaced apart along the second direction Y. The positioning plates 3 are detachably connected to the mounting plate 2, and an antenna element 4 is located in the positioning slot 31 of each positioning plate 3. In this way, the positioning plates 3 and the mounting plate 2 are detachably connected, which facilitates the disassembly of the positioning plates 3 and the mounting plate 2. By using multiple positioning plates 3 to limit the position of an antenna element 4, the installation accuracy of the antenna element 4 can be further improved, and the flatness of the antenna array composed of multiple antenna elements 4 can be reduced.

[0048] For example, there are two mounting plates 2, which are fixedly installed in the mounting cavity at intervals along the second direction Y; there are five positioning plates 3, which are fixedly installed in the mounting cavity at intervals along the second direction Y, with two positioning plates 3 detachably connected to one mounting plate 2 and the remaining three positioning plates 3 detachably connected to the other mounting plate 2. The positioning groove 31 is located on the side of the positioning plate 3 away from the mounting plate 2. The positioning plates 3 and the mounting plates 2 can be connected by screws or bolts to facilitate the removal of the positioning plates 3.

[0049] In one embodiment of this disclosure, the side wall of the positioning groove 31 is provided with a slot, and the side wall of the antenna unit 4 is provided with a block. The block can cooperate with the slot to further improve the installation accuracy of the antenna unit 4.

[0050] In one embodiment of this disclosure, the sidewall of the positioning groove 31 may be provided with a protrusion, and the sidewall of the antenna unit 4 may be provided with a groove. When the antenna unit 4 is installed in the positioning groove 31, the protrusion and the groove cooperate.

[0051] Mounting plate 2 is an aluminum honeycomb panel. Its structural characteristics and molding method result in a flatness much greater than 0.1 mm. This flatness directly affects the flatness of the antenna array, thus influencing the antenna's tuning parameters. Therefore, in one embodiment of this disclosure, the flatness of the bottom of each positioning slot 31 is less than 0.02 mm. For example, after mounting the positioning plate 3 onto the mounting plate 2 and fixing the mounting plate 2 to the mounting frame 1, the multiple positioning slots 31 on the positioning plate 3 can be precision-machined using a milling machine to ensure that the flatness of the bottom of the positioning slots 31 is less than 0.02 mm. This eliminates the cumulative assembly error between the positioning plate 3 and the mounting plate 2, and between the mounting plate 2 and the mounting frame 1, which helps reduce the flatness of the antenna array and improve the antenna's tuning success rate. Specifically, the flatness of the bottom of the positioning slots 31 can be 0.01 mm, 0.012 mm, 0.019 mm, etc.

[0052] In one embodiment of this disclosure, after all the components of the antenna are installed, the flatness of the antenna array formed by each antenna element 4 is less than 0.1 mm. For example, the flatness of the antenna array can be 0.01 mm, 0.05 mm, 0.09 mm, etc., to improve the antenna's commissioning success rate. In other embodiments of this disclosure, the flatness of the antenna array can be 0.1 mm.

[0053] In one embodiment of this disclosure, the antenna has a length of 1791 mm, a width of 1699 mm, and a height of 218 mm. The positioning plate 3 has a thickness of 4 mm.

[0054] The following describes the assembly method of the antenna disclosed herein.

[0055] When assembling the antenna, firstly, multiple positioning plates 3 are bolted onto two mounting plates 2; then, the two positioning plates 3 are fixedly connected to the retaining wall 11 via multiple connecting plates 14, so that the two positioning plates 3 are spaced apart along the second direction Y, the positioning plates 3 extend along the first direction X, and the multiple positioning plates 3 are spaced apart along the second direction Y; next, the bottom of the positioning groove 31 of the positioning plate 3 is milled so that the flatness of the bottom of the positioning groove 31 is less than 0.02mm; finally, multiple antenna elements 4 are mounted onto the positioning plate 3 with screws so that one antenna element 4 is located in the same row of positioning grooves 31, so that the flatness of the antenna array is less than 0.1mm.

[0056] In this embodiment, on the one hand, the positioning groove 31 on the positioning plate 3 can assist in limiting the antenna element 4, improving the installation accuracy of the antenna. On the other hand, after connecting the positioning plate 3 to the mounting plate 2, the positioning groove 31 of the positioning plate 3 is precision machined to make its flatness less than 0.02mm, thereby eliminating the cumulative assembly error between the positioning plate 3 and the mounting plate 2, and between the mounting plate 2 and the mounting frame 1. No special requirements are placed on the flatness of the mounting plate 2, which helps ensure the flatness of the subsequent antenna array and improves the antenna's commissioning success rate. Furthermore, mounting the antenna element 4 onto the positioning plate 3 with screws facilitates the disassembly of the antenna element 4, which is beneficial for its maintenance and replacement.

[0057] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. An antenna, characterized in that, include: Mounting frame with mounting cavity; A mounting plate is disposed in the mounting cavity; The positioning plate is detachably connected to the mounting plate and has multiple positioning grooves, which are spaced apart along a first direction and extend along a second direction. Multiple antenna elements are spaced apart along the first direction, the antenna elements extend along the second direction, and a positioning slot can be detachably connected to one of the antenna elements.

2. The antenna according to claim 1, characterized in that, The number of positioning plates is multiple, and the multiple positioning plates are distributed at intervals along the second direction. An antenna unit is located in the positioning slot of each of the positioning plates.

3. The antenna according to claim 2, characterized in that, The flatness of the bottom of each of the positioning grooves is less than 0.02 mm.

4. The antenna according to claim 3, characterized in that, The flatness of the antenna array formed by each of the antenna elements is less than 0.1 mm.

5. The antenna according to claim 2, characterized in that, The positioning slot has a slot on its side wall, and the antenna unit has a block on its side wall. The block can cooperate with the slot.

6. The antenna according to claim 1, characterized in that, The mounting frame includes a retaining wall and multiple supporting beams; The retaining wall encloses the installation cavity; Multiple support beams are located in the mounting cavity and are spaced apart along the second direction; the support beams extend along the first direction and are used to support the mounting plate, and both ends of the support beams are connected to the retaining wall.

7. The antenna according to claim 6, characterized in that, The mounting frame also includes a plurality of reinforcing rods extending along the second direction; at least a portion of the reinforcing rods are located between two adjacent support beams and are connected to the support beams.

8. The antenna according to claim 7, characterized in that, The retaining wall has a connecting plate on its side wall, and the mounting plate is connected to the connecting plate.

9. The antenna according to any one of claims 1 to 8, characterized in that, The number of mounting plates is multiple, and the multiple mounting plates are distributed at intervals along the second direction in the mounting cavity.

10. A radar, characterized in that, Includes the antenna as described in any one of claims 1 to 9.

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