Waveguide device and radar

Abstract

The utility model provides a waveguide device and a radar, and relates to the technical field of microwave communication. The waveguide device comprises an upper waveguide cavity, a lower waveguide cavity and a positioning structure. Wherein the upper waveguide cavity is provided with a first waveguide cavity, and the first waveguide cavity is recessed towards the interior of the upper waveguide cavity along the axis direction of the upper waveguide cavity; the lower waveguide cavity is provided with a second waveguide cavity, and the second waveguide cavity is recessed towards the interior of the lower waveguide cavity along the axis direction of the lower waveguide cavity. And the upper waveguide cavity and the lower waveguide cavity are aligned through the positioning structure, so that the first waveguide cavity and the second waveguide cavity are butted and spliced to form a waveguide cavity. According to the invention, the connection of the upper and lower waveguide cavities is positioned through the positioning structure, so that the alignment accuracy of the upper and lower cavities is improved, and the performance of the device is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of microwave communication technology, and in particular to a waveguide device and a radar. Background Art

[0002] A waveguide circulator is a passive component used in microwave transmission and radio frequency communication systems. It is usually used to control and adjust the transmission direction and power of microwave signals, and can be used to achieve functions such as signal splitting, merging, and power detection. Common application scenarios include radar systems, communication systems, and microwave equipment.

[0003] The cavities of existing waveguide circulators include integrated cavities and split cavities. However, in order to adjust or test the performance of the waveguide circulator, a split cavity is often used to facilitate the disassembly and assembly of the device. However, during repeated disassembly and assembly, the degree of alignment of different cavities often affects the overall performance of the device.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of this, a waveguide device and a radar are provided. The waveguide device improves the alignment accuracy of the upper and lower cavities by aligning and coordinating between positioning structures, thereby improving the performance of the device.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by the practice of the present disclosure.

[0007] According to one aspect of the present disclosure, there is provided a waveguide device, the device comprising:

[0008] An upper waveguide cavity, wherein a first waveguide cavity is disposed on the upper waveguide cavity, and the first waveguide cavity is recessed toward the interior of the upper waveguide cavity along the axis direction of the upper waveguide cavity;

[0009] A lower waveguide cavity, wherein a second waveguide cavity is disposed on the lower waveguide cavity, and the second waveguide cavity is recessed toward the interior of the lower waveguide cavity along the axial direction of the lower waveguide cavity;

[0010] A positioning structure is used to align the upper waveguide cavity and the lower waveguide cavity so that the first waveguide cavity and the second waveguide cavity are butted and spliced ​​to form a waveguide cavity.

[0011] In an exemplary embodiment of the present disclosure, the three sides of the upper waveguide cavity are respectively provided with first ports, the three sides of the lower waveguide cavity are respectively provided with second ports, and each of the first ports is respectively connected with each of the second ports to form a waveguide port of the waveguide device;

[0012] The waveguide cavity has three channels, the axes of the three channels intersect at a central point, and each channel is arranged in a one-to-one correspondence with each waveguide port.

[0013] In an exemplary embodiment of the present disclosure, the positioning structure is an integrated structure, and the positioning structure includes a main body and a recessed portion arranged on the main body, and the depth of the recessed portion is less than or equal to the length of the channel with the smallest length among the three channels. By inserting the positioning structure into the waveguide port and the channel into the recessed portion, the bottom of the recessed portion fits with the end of the channel to align the upper waveguide cavity and the lower waveguide cavity.

[0014] In an exemplary embodiment of the present disclosure, the positioning structure is a split structure, and the positioning structure includes a first positioning structure and a second positioning structure; wherein the first positioning structure is arranged on the upper waveguide cavity, and the first positioning structure is located between the first waveguide cavity and the edge of the upper waveguide cavity; the second positioning structure is arranged on the lower waveguide cavity, and the second positioning structure is located between the second waveguide cavity and the edge of the lower waveguide cavity.

[0015] In an exemplary embodiment of the present disclosure, there are at least two first positioning structures, and at least two first positioning structures are arranged in a ring around the first waveguide cavity and are evenly distributed on the upper waveguide cavity.

[0016] In an exemplary embodiment of the present disclosure, the first positioning structure includes a positioning hole or a positioning pin.

[0017] In an exemplary embodiment of the present disclosure, there are at least two second positioning structures, at least two of which are arranged in a ring around the second waveguide cavity and are evenly distributed on the lower waveguide cavity, and the second positioning structures are arranged corresponding to the first positioning structures.

[0018] In an exemplary embodiment of the present disclosure, the second positioning structure includes a positioning hole or a positioning pin.

[0019] In an exemplary embodiment of the present disclosure, the upper waveguide cavity is further provided with a plurality of first connecting holes, and the first connecting holes penetrate the upper waveguide cavity along the axial direction of the upper waveguide cavity; the lower waveguide cavity is provided with second connecting holes corresponding to the first connecting holes, and the second connecting holes penetrate the lower waveguide cavity along the axial direction of the lower waveguide cavity, and the first connecting holes and the second connecting holes are connected one-to-one through connecting pieces.

[0020] According to another aspect of the present disclosure, there is provided a radar, the radar comprising:

[0021] The above-mentioned waveguide device, wherein a waveguide port is provided on each of the three sides of the waveguide device;

[0022] Waveguide flanges, the number of the waveguide flanges is three, the three waveguide flanges are respectively connected to three side surfaces of the waveguide device, and the waveguide flanges correspond to the waveguide ports one by one.

[0023] The waveguide device provided by the present disclosure includes an upper waveguide cavity and a lower waveguide cavity. The upper waveguide cavity and the lower waveguide cavity are aligned by a positioning structure, thereby improving the alignment accuracy between the upper waveguide cavity and the lower waveguide cavity. In particular, when the waveguide device is repeatedly disassembled and assembled, each combination connection of the upper and lower waveguide cavities can achieve a preset alignment accuracy, thereby improving the performance of the device.

[0024] The radar provided by the present disclosure improves the overall performance and yield of the radar due to the use of the above-mentioned waveguide device.

[0025] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0027] Figure 1 It is a top view of an upper waveguide cavity of a waveguide device in an exemplary embodiment of the present disclosure.

[0028] Figure 2 It is a cross-sectional view of an upper waveguide cavity of a waveguide device in an exemplary embodiment of the present disclosure.

[0029] Figure 3It is a bottom view of an upper waveguide cavity of a waveguide device in an exemplary embodiment of the present disclosure.

[0030] Figure 4 It is a top view of a lower waveguide cavity of a waveguide device in an exemplary embodiment of the present disclosure.

[0031] Figure 5 It is a cross-sectional view of a lower waveguide cavity of a waveguide device in an exemplary embodiment of the present disclosure.

[0032] Figure 6 It is a bottom view of a lower waveguide cavity of a waveguide device in an exemplary embodiment of the present disclosure.

[0033] Figure 7 It is a top view of an end cover in an exemplary embodiment of the present disclosure.

[0034] Figure 8 It is a side view of an end cap in an exemplary embodiment of the present disclosure.

[0035] Fig. 9 It is a structural schematic diagram of an integrated positioning structure in an exemplary embodiment of the present disclosure.

[0036] Fig.10 The figure is a top view of an assembly of a positioning structure and a waveguide device in an exemplary embodiment of the present disclosure.

[0037] Fig.11 It is a side view of an assembly of a positioning structure and a waveguide device in an exemplary embodiment of the present disclosure.

[0038] Fig.12 In the exemplary embodiment of the present disclosure Fig.10 AA cross-sectional view of the structure shown.

[0039] Fig.13 In the exemplary embodiment of the present disclosure Fig.10 BB cross-sectional view of the structure shown.

[0040] Fig.14 In the exemplary embodiment of the present disclosure Fig.11 CC cross-sectional view of the structure shown.

[0041] Fig.15 It is a structural schematic diagram of the first side of a radar in an exemplary embodiment of the present disclosure.

[0042] Fig.16 It is a structural schematic diagram of the second side of a radar in an exemplary embodiment of the present disclosure.

[0043] Fig.17 It is a structural schematic diagram of the third side of a radar in an exemplary embodiment of the present disclosure.

[0044] The reference numerals are described as follows:

[0045] 10. Positioning structure; 100. Upper waveguide cavity; 110. First waveguide cavity; 120. First positioning structure; 130. First connecting hole; 140. Upper channel; 200. Lower waveguide cavity; 210. Second waveguide cavity; 220. Second positioning structure; 230. Second connecting hole; 240. Lower channel; 300. End cover; 301. End cover through hole; 310. First side surface; 320. Second side surface; 330. Third side surface; 410. First flange connecting hole; 420. Second flange connecting hole; 430. Third flange connecting hole; 510. First waveguide port; 520. Second waveguide port; 530. Third waveguide port; 600. Main body; 610. Recess. DETAILED DESCRIPTION

[0046] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0047] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0048] The terms "a", "an", "the", "said" 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 express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0049] In the related technology, the waveguide circulator is a linear non-reciprocal device, which has become an important device in microwave equipment such as microwave communication, radar, and electronic countermeasures. The waveguide circulator is a special device made of microwave ferrite material. Its working principle is to use the Faraday rotation effect of the polarization plane rotating when the electromagnetic wave is transmitted in the gyromagnetic ferrite material with an external DC magnetic field. After proper design, the polarization plane of the electromagnetic wave is perpendicular to the grounding resistive plug during forward transmission, so the attenuation is very small. During reverse transmission, the polarization plane of the electromagnetic wave is parallel to the grounding resistive plug and is almost completely absorbed.

[0050] At present, the commonly used waveguide circulator consists of two parts, an upper and lower cavity. When the upper and lower cavity parts need to be aligned and installed, external tooling is often used to align the upper and lower cavities. However, this alignment method is relatively complicated, and the alignment accuracy each time is difficult to ensure within the preset accuracy range, which makes the repeated disassembly and assembly testing process of the device complicated, affecting the subsequent performance of the device.

[0051] Based on this, the present disclosure provides a waveguide device, such as Figure 1 , Figure 4 and Fig.10 As shown, the waveguide device comprises:

[0052] An upper waveguide cavity 100, wherein a first waveguide cavity 110 is disposed on the upper waveguide cavity 100, and the first waveguide cavity 110 is recessed toward the interior of the upper waveguide cavity 100 along the axis direction of the upper waveguide cavity 100;

[0053] A lower waveguide cavity 200, wherein a second waveguide cavity 210 is disposed on the lower waveguide cavity 200, and the second waveguide cavity 210 is recessed toward the interior of the lower waveguide cavity 200 along the axis direction of the lower waveguide cavity 200;

[0054] The upper waveguide cavity and the lower waveguide cavity are aligned by the positioning structure 10 so that the first waveguide cavity 110 and the second waveguide cavity 210 are butted and spliced ​​to form a waveguide cavity.

[0055] The waveguide device provided by the present disclosure includes an upper waveguide cavity and a lower waveguide cavity. The upper waveguide cavity and the lower waveguide cavity are relatively matched by a positioning structure so that the first waveguide cavity and the second waveguide cavity are butted and spliced ​​to form a waveguide cavity. The waveguide cavity formed by aligning and connecting the first waveguide cavity and the second waveguide cavity by the positioning structure has high alignment accuracy and is suitable for repeated disassembly and assembly of the device without affecting the overall alignment accuracy of the device, thereby improving the overall performance of the device.

[0056] The various parts of the waveguide device provided by the embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings:

[0057] In the embodiments provided in the present disclosure, Figure 1 , Figure 2 and Figure 3 As shown, the waveguide device includes an upper waveguide cavity 100 , on which a first waveguide cavity 110 is disposed. The first waveguide cavity 110 is recessed toward the interior of the upper waveguide cavity 100 along the axis direction of the upper waveguide cavity 100 .

[0058] The upper waveguide cavity 100 may be made of a metal material, for example, copper or nickel. The outer contour of the upper waveguide cavity 100 may be a cube, specifically, the upper waveguide cavity 100 may be a cuboid, the size of the long side of the upper waveguide cavity 100 may be 60.5 mm, and the size of the short side may be 63±0.02 mm. When processing the upper waveguide cavity 100, the blank may be directly processed to the size of the long side and the short side of the upper waveguide cavity 100 by a machining process, without the need for secondary processing.

[0059] The first waveguide cavity 110 is concave inwardly along the axial direction of the upper waveguide cavity 100, and the first waveguide cavity 110 may have three upper channels 140, and the three upper channels 140 intersect at a central point. Figure 1 As shown, for the axes of the three upper channels 140, the angle α between each of them can be 120°. The side of the first waveguide cavity 110 opposite to the depression is protruded on the surface of the upper waveguide cavity 100, and the protruding height can be 1.6 mm. Of course, there are processing errors in the machining process, so the height of the first waveguide cavity 110 protruding from the upper waveguide cavity 100 can also include a tolerance, and the specific value of the tolerance can be determined according to the accuracy of the machining process, which will not be described in detail here.

[0060] In addition, a first port is provided on each surface of the upper waveguide cavity 100 corresponding to the extension direction of the three upper channels 140 , and each upper channel 140 corresponds to a first port. Electromagnetic waves can be coupled and directionally transmitted through the three upper channels 140 of the first waveguide cavity 110 .

[0061] In the embodiment provided in the present disclosure, a plurality of first connection holes 130 are further provided on the upper waveguide cavity 100, and the plurality of first connection holes 130 penetrate the upper waveguide cavity 100 along the axis direction of the upper waveguide cavity 100. Taking the upper waveguide cavity 100 as a rectangular parallelepiped as an example, Figure 1 As shown, the first connection holes 130 may be distributed at the four corners of the upper waveguide cavity 100 , and the center line of each first connection hole 130 is parallel to the axial direction of the upper waveguide cavity 100 , and the four first connection holes 130 are symmetrically and evenly distributed.

[0062] In addition, three first connection holes 130 are correspondingly arranged at the circumferential position of the first waveguide cavity 110, and each first connection hole 130 is arranged opposite to the concave point of the first waveguide cavity 110, and the distance between each first connection hole 130 and the center point of the first waveguide cavity 110 is equal. The multiple first connection holes 130 provided by the present disclosure are evenly distributed on the upper waveguide cavity 100, which can ensure that the upper waveguide cavity 100 is uniformly stressed when subsequent components are connected, thereby improving the reliability of the device.

[0063] It should be noted that the number and arrangement positions of the first connection holes 130 in the above embodiments provided by the present disclosure can be adaptively adjusted according to the actual connection requirements of the device, and the present disclosure does not make specific limitations.

[0064] In the embodiments provided in the present disclosure, Figure 4 , Figure 5 and Figure 6 As shown, the waveguide device includes a lower waveguide cavity 200 , on which a second waveguide cavity 210 is disposed, and the second waveguide cavity 210 is recessed into the lower waveguide cavity 200 along the axis direction of the lower waveguide cavity 200 .

[0065] The lower waveguide cavity 200 may be made of a metal material, for example, copper or nickel. The outer contour of the lower waveguide cavity 200 may be a cube, specifically, the lower waveguide cavity 200 may be a cuboid, the size of the long side of the lower waveguide cavity 200 may be 60.5 mm, and the size of the short side may be 63±0.02 mm. When processing the lower waveguide cavity 200, the blank may be directly processed to the size of the long side and the short side of the lower waveguide cavity 200 by a machining process, without the need for secondary processing.

[0066] The second waveguide cavity 210 is concave inwardly along the axial direction of the lower waveguide cavity 200, and the second waveguide cavity 210 may have three lower channels 240, and the three lower channels 240 intersect at a central point. Figure 4 As shown, for the axes of the three lower channels 240, the angle β between each other can be 120°. The side of the second waveguide cavity 210 opposite to the depression is protruded on the surface of the lower waveguide cavity 200, and the protruding height can be 1.6 mm. Of course, there are processing errors in the machining process, so the height of the second waveguide cavity 210 protruding from the lower waveguide cavity 200 can also include a tolerance, and the specific value of the tolerance can be determined according to the accuracy of the machining process, which will not be described in detail here.

[0067] In addition, a second port is provided on each surface of the lower waveguide cavity 200 corresponding to the extension direction of the three lower channels 240 , and each lower channel 240 corresponds to a second port. Electromagnetic waves can be coupled and directionally transmitted through the three lower channels 240 of the second waveguide cavity 210 .

[0068] Among them, the three upper channels 140 of the first waveguide cavity 110 and the three lower channels 240 of the second waveguide cavity 210 are spliced ​​one by one, and the waveguide cavity is formed by splicing each upper channel 140 with each lower channel 240. The waveguide cavity has three channels, and the axes of the three channels intersect at one point, and the angle between the axes of the three channels is 120°. Each first port on the upper waveguide cavity and each second port on the lower waveguide cavity are respectively connected to form a waveguide port of the waveguide device. Each channel of the waveguide cavity corresponds to a waveguide port, and each waveguide port can be an electromagnetic wave entrance or exit. For example, the three-terminal waveguide cavity formed in the present disclosure can be a cavity with two inlets and one outlet or two outlets and one inlet. Electromagnetic waves can enter the waveguide cavity through the port, and signal coupling and transmission direction change are performed in the waveguide cavity. The waveguide device provided by the present disclosure has good coupling performance for electromagnetic waves, small electromagnetic wave attenuation, and good performance.

[0069] Among them, the shapes and structures of the first waveguide cavity 110 and the second waveguide cavity 210 can be matched. Further, the appearance and structural dimensions of the first waveguide cavity 110 and the second waveguide cavity 210 are exactly the same, so as to ensure that after the upper waveguide cavity 100 and the lower waveguide cavity 200 are subsequently combined, the first waveguide cavity 110 and the second waveguide cavity 210 can be combined into a closed waveguide cavity, thereby improving the closedness of the waveguide cavity, which is used for the transmission and coupling of electromagnetic waves and reducing the attenuation of electromagnetic waves. Of course, during the machining process, the machining accuracy of the equipment may not completely guarantee that the corresponding dimensions of the first waveguide cavity 110 and the second waveguide cavity 210 are all the same, and tolerances are allowed between the dimensions. It should be understood that the existence of tolerances does not affect the matching accuracy between the components in the device.

[0070] In the embodiment provided by the present disclosure, a plurality of second connection holes 230 are further provided on the lower waveguide cavity 200, and the plurality of second connection holes 230 penetrate the lower waveguide cavity 200 along the axial direction of the lower waveguide cavity 200. Taking the lower waveguide cavity 200 as a rectangular parallelepiped as an example, Figure 4 and Figure 6As shown, the second connection holes 230 can be distributed at the four corners of the lower waveguide cavity 200, and the center line of each second connection hole 230 is parallel to the axial direction of the lower waveguide cavity 200, and the four second connection holes 230 are symmetrically and evenly distributed. In addition, three second connection holes 230 are correspondingly arranged at the circumferential position of the second waveguide cavity 210. The structure of these three second connection holes 230 can be different from the structure of the above-mentioned four second connection holes 230. For example, these three second connection holes 230 can be blind holes. In these three second connection holes 230, each second connection hole 230 is arranged relative to the concave point of the second waveguide cavity 210, and the distance between each second connection hole 230 and the center point of the second waveguide cavity 210 is equal. The multiple second connection holes 230 provided by the present disclosure are evenly distributed on the lower waveguide cavity 200. When the subsequent components are connected, it can ensure that the lower waveguide cavity 200 is subjected to uniform force, thereby improving the reliability of the device.

[0071] It should be noted that the number and arrangement positions of the second connection holes 230 in the above embodiments provided by the present disclosure can be adaptively adjusted according to the actual connection requirements of the device, and the present disclosure does not make specific limitations.

[0072] Among them, the first connecting hole 130 and the second connecting hole 230 can be connected one by one. In order to ensure the connection accuracy and reliability between the upper waveguide cavity 100 and the lower waveguide cavity 200, each pair of connected first connecting holes 130 and second connecting holes 230 needs to ensure the same size. For example, it is necessary to ensure that the correspondingly connected first connecting holes 130 and second connecting holes 230 have the same aperture.

[0073] The first connection hole 130 and the second connection hole 230 can be connected one by one through a connection piece, wherein the connection piece can be a connection structure such as a screw or a bolt. Of course, the type and size of the connection piece can be adaptively selected according to the structure and size of the first connection hole 130 and the second connection hole 230, and the present disclosure does not make specific limitations.

[0074] In the embodiments provided in the present disclosure, Figures 9 to 14 As shown, the positioning structure 10 can be an integrated structure or a split structure.

[0075] In the first embodiment provided by the present disclosure, Fig. 9 As shown, the positioning structure is an integrated structure, wherein the positioning structure 10 includes a main body 600 and a recess 610 arranged on the main body 600, the depth of the recess 610 is less than or equal to the length of the smallest channel among the three channels, and the positioning structure 10 is inserted into the waveguide port, and the channel is inserted into the recess 610, the bottom of the recess 610 is fitted with the end of the channel to align the upper waveguide cavity and the lower waveguide cavity.

[0076] In the present disclosure, the lengths of the three channels of the waveguide cavity may be the same or different, for example, the lengths of the three channels are the same; or the lengths of two channels are the same, and the length of another channel is different from the lengths of the other two channels; or the lengths of the three channels are different. In the present disclosure, in order to facilitate the preparation of the waveguide cavity and to facilitate the control of the performance of the waveguide device, the three channels are usually of the same length. It should be noted that the length of the channel may refer to the shortest distance between the port of each channel and the center point where the three channels intersect. Of course, the length of the channel may also be measured in other ways, but it is necessary to ensure that the same calibration standard is used for the lengths of the three channels.

[0077] In the present disclosure, the positioning structure 10 can be a special positioning tool, which can be made of commonly used metal materials, such as copper, iron or alloy. The size of the main body 600 of the positioning structure 10 can be prepared according to the size of the waveguide port, such as Fig.10 and Fig.11 As shown, the main body 600 can be inserted into the waveguide port, and part of the main body 600 extends outside the waveguide port of the waveguide device. The wavepoint port can provide support for the main body 600 of the positioning structure. At the same time, the main body 600 of the positioning structure can also play a role in preliminary positioning through the matching relationship between it and the waveguide port.

[0078] A recess 610 is provided on the main body 600 of the positioning structure. The recess 610 is formed by being recessed from the surface of the positioning structure 10 to the inside thereof. For example, the main body 600 may be a metal block with a cubic structure. The main body 600 may be cut by machining and other processes to form the recess 610 on the main body 600.

[0079] The depth of the recess 610 is less than or equal to the length of the smallest channel among the three channels. By inserting the positioning structure 10 into the waveguide port and inserting the channel into the recess 610, the bottom of the recess 610 fits with the end of the channel to align the upper waveguide cavity and the lower waveguide cavity. Through the cooperation between the recess 610 and the channel, the first waveguide cavity and the second waveguide cavity can be inserted into the recess 610 at the same time, and the recess 610 covers the upper channel of the first waveguide cavity and the lower channel of the second waveguide cavity, so that the first waveguide cavity and the second waveguide cavity are limited by the recess 610, so that the upper channel and the lower channel can be aligned within the preset accuracy after docking.

[0080] The positioning structure 10 provided in the present disclosure can be adapted to any waveguide port of a device according to actual needs. After the waveguide device is assembled, the positioning structure 10 can be removed from the device by plugging and unplugging, and can be used repeatedly.

[0081] The positioning structure 10 provided in the present disclosure can be an integrated structure, by inserting the main body 600 of the positioning structure into the waveguide port, and at the same time inserting the waveguide channel corresponding to the waveguide port into the recess 610 of the positioning structure, the dual positioning effect of the main body 600 and the recess 610 of the positioning structure forms a limit for the docking of the upper waveguide cavity and the lower waveguide cavity, so as to improve the alignment accuracy of the upper waveguide cavity and the lower waveguide cavity, improve the assembly accuracy of the device, and thus improve the overall performance of the device; in addition, this integrated positioning structure has a simple overall structure, is easy to use, and is recyclable.

[0082] In the second embodiment provided by the present disclosure, the positioning structure may be a split structure, wherein a first positioning structure 120 is provided on the upper waveguide cavity, and the first positioning structure 120 is located between the first waveguide cavity 110 and the edge of the upper waveguide cavity 100; a second positioning structure 220 is provided on the lower waveguide cavity, and the second positioning structure 220 is located between the second waveguide cavity 210 and the edge of the lower waveguide cavity 200.

[0083] The upper waveguide cavity 100 is provided with a first positioning structure 120, and the first positioning structure 120 is located between the first waveguide cavity 110 and the edge of the upper waveguide cavity 100. There are at least two first positioning structures 120, and at least two first positioning structures 120 are arranged around the first waveguide cavity 110 and are evenly distributed on the upper waveguide cavity 100. Take the number of the first positioning structures 120 as an example, as shown in FIG. Figure 1 and Figure 3 As shown, the two first positioning structures 120 may be distributed on the diagonal positions of the upper waveguide cavity 100 , and symmetrically distributed on both sides of the first waveguide cavity 110 .

[0084] The first positioning structure 120 includes a positioning hole or a positioning pin. For example, the first positioning structure 120 is a positioning hole, such as Figure 1 and Figure 3 As shown, it can penetrate the upper waveguide cavity 100 and cooperate with other positioning structures to achieve the connection or cooperation between the upper waveguide cavity and other components. The size of the first positioning hole can be 11±0.02mm, and its specific size can be adaptively adjusted according to the actual size requirements of the device. For example, the first positioning structure 120 is a positioning pin, which can be provided on the surface of the upper waveguide cavity 100 perpendicular to the concave direction of the first waveguide cavity 110, and its height can be determined according to the actual cooperation requirements between the components of the device.

[0085] The lower waveguide cavity 200 is provided with a second positioning structure 220, and the second positioning structure 220 is located between the second waveguide cavity 210 and the edge of the lower waveguide cavity 200. There are at least two second positioning structures 220, and at least two second positioning structures 220 are arranged around the second waveguide cavity 210 and are evenly distributed on the lower waveguide cavity 200. Take the number of the second positioning structures 220 as an example, as shown in FIG. Figure 4 and Figure 6 As shown, the two second positioning structures 220 may be distributed on the diagonal positions of the lower waveguide cavity 200 , and symmetrically distributed on both sides of the second waveguide cavity 210 .

[0086] The second positioning structure 220 includes a positioning hole or a positioning pin. For example, the second positioning structure 220 is a positioning hole, such as Figure 4 As shown, it can penetrate the lower waveguide cavity 200 and cooperate with other positioning structures to achieve the connection or cooperation between the lower waveguide cavity and other components. The size of the second positioning hole can be 11±0.02mm, and its specific size can be adaptively adjusted according to the actual size requirements of the device. For example, the second positioning structure 220 is a positioning pin, which can be arranged on the surface of the lower waveguide cavity 200 perpendicular to the concave direction of the second waveguide cavity 210, and its height can be determined according to the actual cooperation requirements between the components of the device.

[0087] In the embodiment provided in the present disclosure, the upper waveguide cavity 100 and the lower waveguide cavity 200 are relatively positioned and matched by the first positioning structure 120 and the second positioning structure 220, so that the first waveguide cavity 110 and the second waveguide cavity 210 are docked and spliced ​​to form a waveguide cavity.

[0088] The first positioning structure 120 and the second positioning structure 220 can be matched one by one. Specifically, if the first positioning structure 120 is a positioning hole, the second positioning structure 220 is a positioning pin; if the first positioning structure 120 is a positioning pin, the second positioning structure 220 is a positioning hole. Through the positioning matching between the first positioning structure 120 and the second positioning structure 220, the positioning connection between the upper waveguide cavity 100 and the lower waveguide cavity 200 can be achieved, ensuring the alignment and alignment between the edges of the upper waveguide cavity 100 and the lower waveguide cavity 200 and the connection holes, and ensuring the subsequent connection accuracy of the upper waveguide cavity 100 and the lower waveguide cavity 200.

[0089] The waveguide device provided by the present disclosure includes an upper waveguide cavity and a lower waveguide cavity. The upper waveguide cavity and the lower waveguide cavity are relatively matched by a positioning structure so that the first waveguide cavity and the second waveguide cavity are butted and spliced ​​to form a waveguide cavity. The waveguide cavity formed by aligning and connecting the first waveguide cavity and the second waveguide cavity by the positioning structure has high alignment accuracy, is suitable for repeated disassembly and assembly of the device, and does not affect the alignment accuracy of the entire device, thereby improving the overall performance of the device; in addition, this split structure is recyclable, has a simple structure, and is easy to operate.

[0090] In the embodiments provided in the present disclosure, the integrated positioning structure and the split positioning structure can be respectively arranged on the waveguide device, or can be arranged on the waveguide device at the same time, and the positioning functions of the two are not contradictory. When the integrated positioning structure and the split positioning structure are arranged on the waveguide device at the same time, the assembly of the waveguide device can be positioned based on one positioning structure, or the two positioning structures can be coordinated with each other at the same time to position the assembly of the waveguide device.

[0091] It should be noted that, in addition to the above-mentioned structure, the waveguide device provided by the present disclosure may also include other necessary components or structures required for microwave components, for example, matching loads, adjustment devices, etc. Components or structures not mentioned in the present disclosure all fall within the protection scope of the present disclosure.

[0092] The waveguide device provided in the present disclosure may further include an end cap 300, such as Figure 7 and Figure 8 As shown, the end cap 300 can be connected to the outside of the upper waveguide cavity to ensure that the internal structure of the device is not damaged by the outside. An end cap through hole 301 connected to the upper waveguide cavity 100 can be set at the edge of the end cap 300, and the end cap 300 and the upper waveguide cavity 100 can be connected by a connecting component, for example, the two can be connected by screws to achieve the connection between the end cap 300 and the upper waveguide cavity 100. In addition, the connection by screws can facilitate the disassembly and assembly of the end cap 300.

[0093] The present disclosure provides a radar, such as Figures 15 to 17 As shown, the radar includes: the above-mentioned waveguide device and waveguide flange.

[0094] Among them, a waveguide port is respectively arranged on the three sides of the waveguide device; the number of the waveguide flanges is three, and the three waveguide flanges are respectively connected to the three sides of the waveguide device, and the waveguide flanges correspond to the waveguide ports one by one.

[0095] Flange connection holes are provided on the three sides of the waveguide device. Fig.15 , Fig.16 and Fig.17As shown, the waveguide device may include a first side surface 310, a second side surface 320 and a third side surface 330, which are connected in sequence. A first waveguide port 510 is arranged on the first side surface 310 of the waveguide device, a second waveguide port 520 is arranged on the second side surface 320, and a third waveguide port 530 is arranged on the third side surface 330, wherein a first flange connection hole 410 is opened at a circumferential position around the first waveguide port 510 on the first side surface 310, a second flange connection hole 420 is opened at a circumferential position around the second waveguide port 520 on the second side surface 320, and a third flange connection hole 430 is opened at a circumferential position around the third waveguide port 530 on the third side surface 330.

[0096] The number of the first flange connection holes 410, the second flange connection holes 420 and the third flange connection holes can be the same or different. For example, the number of the first flange connection holes 410, the second flange connection holes 420 and the third flange connection holes 430 are four respectively. On each side, each flange connection hole is opened at the edge of a side. Of course, the number of flange connection holes on each side can be selected according to the connection strength requirements of the specific waveguide device and the waveguide flange.

[0097] The waveguide flange is connected to the waveguide device through the flange connection hole, and the waveguide flange is set corresponding to the waveguide port. The waveguide flange is used to connect different waveguide sections, ensure the prevention of electromagnetic wave leakage and external interference, and maintain the precise alignment of the waveguide to ensure the reliable transmission and precise positioning of high-frequency electromagnetic waves.

[0098] The radar provided by the present disclosure connects the waveguide device with other components through a waveguide flange, and changes the transmission direction by providing electromagnetic wave coupling through the waveguide device, so as to improve the transmission efficiency of the electromagnetic waves, thereby improving the overall performance and yield of the radar.

[0099] 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 modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A waveguide device, characterized in that: include: An upper waveguide cavity, wherein a first waveguide cavity is disposed on the upper waveguide cavity, and the first waveguide cavity is recessed toward the interior of the upper waveguide cavity along the axis direction of the upper waveguide cavity; A lower waveguide cavity, wherein a second waveguide cavity is disposed on the lower waveguide cavity, and the second waveguide cavity is recessed toward the interior of the lower waveguide cavity along the axial direction of the lower waveguide cavity; A positioning structure is used to align the upper waveguide cavity and the lower waveguide cavity so that the first waveguide cavity and the second waveguide cavity are butted and spliced ​​to form a waveguide cavity.

2. The waveguide device according to claim 1, characterized in that: The three sides of the upper waveguide cavity are respectively provided with first ports, and the three sides of the lower waveguide cavity are respectively provided with second ports, and each of the first ports is connected with each of the second ports to form a waveguide port of the waveguide device; The waveguide cavity has three channels, the axes of the three channels intersect at a central point, and each channel is arranged in a one-to-one correspondence with each waveguide port.

3. The waveguide device according to claim 2, characterized in that: The positioning structure is an integrated structure, comprising a main body and a recessed portion arranged on the main body, wherein the depth of the recessed portion is less than or equal to the length of the smallest channel among the three channels, and the positioning structure is inserted into the waveguide port, and the channel is inserted into the recessed portion, so that the bottom of the recessed portion fits with the end of the channel, so as to align the upper waveguide cavity and the lower waveguide cavity.

4. The waveguide device according to claim 1, characterized in that: The positioning structure is a split structure, and the positioning structure includes a first positioning structure and a second positioning structure; wherein the first positioning structure is arranged on the upper waveguide cavity, and the first positioning structure is located between the first waveguide cavity and the edge of the upper waveguide cavity; the second positioning structure is arranged on the lower waveguide cavity, and the second positioning structure is located between the second waveguide cavity and the edge of the lower waveguide cavity.

5. The waveguide device according to claim 4, characterized in that: There are at least two first positioning structures, and at least two first positioning structures are arranged in a circle in the first waveguide cavity and are evenly distributed on the upper waveguide cavity.

6. The waveguide device according to claim 5, characterized in that: The first positioning structure includes a positioning hole or a positioning pin.

7. The waveguide device according to claim 4, characterized in that: There are at least two second positioning structures, and at least two second positioning structures are arranged in a circle in the second waveguide cavity and are evenly distributed on the lower waveguide cavity. The second positioning structures are arranged correspondingly to the first positioning structures.

8. The waveguide device according to claim 7, characterized in that: The second positioning structure includes a positioning hole or a positioning pin.

9. The waveguide device according to any one of claims 1 to 8, characterized in that: The upper waveguide cavity is also provided with a plurality of first connection holes, which penetrate the upper waveguide cavity along the axial direction of the upper waveguide cavity; the lower waveguide cavity is provided with second connection holes corresponding to the first connection holes, which penetrate the lower waveguide cavity along the axial direction of the lower waveguide cavity, and the first connection holes and the second connection holes are connected one-to-one through connecting pieces.

10. A radar, characterized in that: include: The waveguide device according to any one of claims 1 to 9, wherein a waveguide port is provided on each of the three sides of the waveguide device; Waveguide flanges, the number of the waveguide flanges is three, the three waveguide flanges are respectively connected to three side surfaces of the waveguide device, and the waveguide flanges correspond to the waveguide ports one by one.

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