High-power microwave transmission device

Abstract

The invention discloses a high-power microwave transmission device which comprises a pulse pressure transmission tube and a pulse pressure output connector. The pulse transmission tube comprises a pulse pressure transmission outer tube and a pulse pressure transmission inner core; the pulse pressure transmission outer tube is provided with a first output end, and the pulse transmission inner core is provided with a second output end; the pulse pressure output connector comprises a connector shell and a switching structure, the connector shell is provided with a first input interface, and the first input interface is connected with the first output end; the switching structure is provided with a second input interface, the second input interface comprises a clamping part, and the second output end is connected with the clamping part in an inserted mode. A containing groove is formed in the side, tightly attached to the outer wall of the second output end, of the clamping part, the high-power microwave transmission device further comprises an elastic connecting piece arranged in the containing groove, one end of the elastic connecting piece abuts against the peripheral face of the second output end, and the other end of the elastic connecting piece abuts against the containing groove. According to the high-power microwave transmission device provided by the invention, the contact performance is enhanced through the elastic connecting piece, so that the stability of electric connection is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of high-power microwaves, and in particular relates to a high-power microwave transmission device. Background Art

[0002] High-power microwaves usually refer to electromagnetic waves with a peak power greater than 100MW and a frequency in the range of 0.1GHz-300GHz. Using directional radiation of high-power microwave beams, it can damage, degrade, disrupt, and interfere with electronic systems, and has broad application prospects.

[0003] Microwave transmission lines are core components in microwave engineering, used to efficiently transmit electromagnetic wave energy within the microwave frequency range (usually 300MHz to 300GHz), and are widely used in radar systems, satellite communications, 5G base stations, high-energy physics experimental devices, etc. The main structural forms of microwave transmission lines include coaxial transmission lines, waveguides, strip lines, etc. The core function is to ensure low signal loss, high isolation and impedance matching, and avoid energy loss caused by reflection and standing waves.

[0004] When currently assembling microwave transmission lines, screws cannot be used for fastening due to space and structural limitations, making it difficult to ensure electrical connection performance between microwave transmission lines under harsh conditions such as impact and vibration. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a high-power microwave transmission device, which enhances the contact performance through an elastic connector, thereby improving the stability of the electrical connection.

[0006] In a first aspect, the present invention provides a high-power microwave transmission device, including a pulse pressure transmission tube and a pulse pressure output connector;

[0007] The pulse transmission tube comprises a pulse transmission outer tube and a pulse transmission inner core coaxially sleeved inside the pulse transmission outer tube; the pulse transmission outer tube has a first output end, and the pulse transmission inner core has a second output end;

[0008] The pulse pressure output connector comprises a connector housing and a switching structure arranged inside the connector housing, wherein the connector housing has a first input interface connected to a first output end;

[0009] The adapter structure has a second input interface, the second input interface includes a clamping portion, and the second output end extends into the connector housing and is plugged into the clamping portion;

[0010] A receiving groove is provided on one side of the clamping portion which is in close contact with the outer wall of the second output end. The high-power microwave transmission device also includes an elastic connector arranged in the receiving groove, one end of the elastic connector abuts against the outer peripheral surface of the second output end, and the other end of the elastic connector abuts against the receiving groove.

[0011] Furthermore, the elastic connecting member includes a spring contact finger.

[0012] Furthermore, the accommodating groove has a groove opening and a groove bottom opposite to each other along the first direction, and the groove opening faces the outer peripheral surface of the second output end; along the first direction, the accommodating groove has a groove depth H, and the groove depth H is smaller than the outer diameter of the spring contact finger.

[0013] Further, along the first direction, there is a difference X between the groove depth H of the accommodating groove and the outer diameter of the spring contact finger, 0<X≤0.5mm.

[0014] Furthermore, the spring contact finger includes a spring body and a plating layer, the material of the spring body includes beryllium copper alloy, and the plating layer includes a silver plating layer.

[0015] Furthermore, there are flange surfaces arranged opposite to each other between the first input interface and the first output end, and the first input interface and the first output end are threadedly connected via the flange surfaces.

[0016] In a second aspect, an embodiment of the present invention further provides a pulse compression component, which includes a plurality of antenna feeding structures and the high-power microwave transmission device described in the first aspect.

[0017] Further, the antenna feeding structure includes an antenna feeding tube and a transmission inner core correspondingly sleeved inside the corresponding antenna feeding tube;

[0018] The joint housing also has a plurality of first output interfaces, and the adapter structure also has a plurality of second output interfaces connected to the first output interfaces in a one-to-one correspondence;

[0019] Each antenna feeding tube is connected to each first output interface in a one-to-one correspondence, and each transmission core is connected to each second output interface in a one-to-one correspondence.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, a clamping part is provided at the second input interface of the adapter structure, and the second output end of the pulse pressure transmission inner core extends into the connector shell and is plugged into the clamping part. However, there will be a certain gap between the two contact surfaces of the clamping part and the second output end, which affects the transmission of high-power microwave signals. Therefore, the present invention provides a receiving groove on the surface where the clamping part contacts the second output end, and installs an elastic connector in the receiving groove. The reverse elastic force provided by the compression deformation of the elastic connector is used to enhance the contact performance between the clamping part and the second output end, so that the current can pass stably between the second output end and the clamping part, thereby improving the stability of the electrical connection between the pulse pressure transmission inner core and the adapter structure, which is beneficial to ensure the stable conductivity of the high-power microwave transmission device in harsh environments such as impact vibration, and is further beneficial to the transmission of high-power microwaves.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a cross-sectional schematic diagram of a high-power microwave transmission device provided by an embodiment of the present invention;

[0024] Figure 2 Shown Figure 1 A partial enlarged view of point C in the middle;

[0025] Figure 3 Shown is a schematic structural diagram of a high-power microwave transmission device provided by an embodiment of the present invention;

[0026] Figure 4 Shown is a schematic structural diagram of an elastic connector provided by an embodiment of the present invention;

[0027] Figure 5 Shown is a top view of an elastic connector provided by an embodiment of the present invention;

[0028] Figure 6 Shown is a side view of an elastic connector provided by an embodiment of the present invention;

[0029] Figure 7 Shown is a cross-sectional schematic diagram of a pulse compression assembly provided by an embodiment of the present invention;

[0030] Figure 8 Shown is a structural schematic diagram of a pulse compression component provided in an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 1-pulse pressure transmission tube; 2-pulse pressure output connector; 11-pulse pressure transmission outer tube; 12-pulse pressure transmission inner core; 111-first output end; 121-second output end; 21-connector shell; 22-transfer structure; 211-first input interface; 221-second input interface; 222-accommodating groove; 3-elastic connector; 31-spring contact finger; 4-antenna feeding structure; 212-first output interface; 41-antenna feeding tube; 42-transmission inner core. DETAILED DESCRIPTION

[0033] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the scheme according to the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the specific embodiments in conjunction with the accompanying drawings. Through the description of the specific embodiments, a more in-depth and specific understanding of the technical means and effects adopted by the present invention to achieve the predetermined purpose can be obtained. However, the accompanying drawings are only for reference and illustration, and are not used to limit the technical solutions of the present invention.

[0035] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant is intended to cover non-exclusive inclusion, so that an article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed. Without further limitation, an element defined by the phrase "including a..." does not exclude the presence of additional identical elements in the article or device including the element.

[0036] Figure 1 The figure shows a cross-sectional schematic diagram of a high-power microwave transmission device provided by an embodiment of the present application; Figure 2 As shown in Figure 1 a partial enlarged view of point C in Figure 3 The figure shows a structural schematic diagram of a high-power microwave transmission device provided by an embodiment of the present application; Figure 4 The figure shows a structural schematic diagram of an elastic connector provided by an embodiment of the present application; Figure 5 The figure shows a top view of an elastic connector provided by an embodiment of the present application; Figure 6 The figure shows a side view of an elastic connector provided by an embodiment of the present application.

[0037] As Figures 1 to 3 shown, an embodiment of the present application provides a high-power microwave transmission device, including a pulse compression transmission tube 1 and a pulse compression output joint 2; the pulse compression transmission tube includes a pulse compression transmission outer tube 11 and a pulse compression transmission inner core 12 coaxially sleeved inside the pulse compression transmission outer tube 11; the pulse compression transmission outer tube 11 has a first output end 111, and the pulse compression transmission inner core 12 has a second output end 121; the pulse compression output joint 2 includes a joint housing 21 and a transfer structure 22 arranged inside the joint housing 21, the joint housing 21 has a first input interface 211, and the first input interface 211 is connected to the first output end 111; the transfer structure 22 has a second input interface 221, and the second input interface 221 includes a clamping portion, and the second output end 121 extends into the joint housing 21 and is inserted into the clamping portion 2211.

[0038] Among them, as Figures 1 to 3As shown, the pulse pressure transmission tube 1 can be used as a transmission channel for high-power microwaves, and the coaxially sleeved pulse pressure transmission inner core 12 and the pulse pressure transmission outer tube 11 can be regarded as coaxial inner conductor and outer conductor. Further, the pulse pressure transmission inner core 12 and the pulse pressure transmission outer tube need to be insulated to maintain the continuity of electromagnetic shielding. The pulse pressure output connector 2 can have multiple interfaces, one of which is connected to the pulse pressure output tube to branch the high-power microwave signal transmitted in the pulse pressure output tube. Furthermore, the pulse pressure output connector 2 includes a connector housing 21 and a switching structure 22 installed inside the connector housing 21. The first input interface 211 of the connector housing 21 is connected to the pulse pressure transmission outer tube 11, and the second input interface 221 of the switching structure 22 is connected to the pulse pressure transmission inner core 12 in the form of plug-in. Furthermore, the adapter structure 22 is provided with a clamping part at the second input interface 221, and the second output end 121 of the pulse pressure transmission inner core 12 extends into the joint housing 21 and is plugged into the clamping part, so as to realize the electrical connection between the pulse pressure transmission inner core 12 and the clamping part. In order to realize the plug-in assembly between the adapter structure 22 and the pulse pressure transmission inner core 12, there will be a certain gap between the two contact surfaces between the clamping part and the second output end 121, and the influence of the tolerance size during production and processing will further increase the gap between the two contact surfaces between the clamping part and the second output end 121. At the same time, due to the limitation of space and structure, it is impossible to eliminate the gap between the clamping part and the second output end 121 by screw fastening, which affects the stability of the electrical connection between the adapter structure 22 and the pulse pressure output inner core, and the transmission of high-power microwave signals is limited.

[0039] Therefore, if Figures 1 to 6 As shown, in the embodiment of the present application, a receiving groove 222 is provided on the side where the clamping portion is in close contact with the outer wall of the second output end 121, and the high-power microwave transmission device also includes an elastic connector 3 arranged in the receiving groove 222, one end of the elastic connector 3 is abutted against the outer peripheral surface of the second output end 121, and the other end of the elastic connector 3 is abutted against the receiving groove 222.

[0040] Based on this, the embodiment of the present application provides a receiving groove 222 on the side where the clamping part of the second input interface 221 contacts the second output end 121, and installs an elastic connector 3 in the receiving groove 222, and makes the two ends of the elastic connector 3 respectively abut against the outer peripheral surface of the receiving groove 222 and the second output end 121, and utilizes the reverse elastic force provided by the compression deformation of the elastic connector 3 to enhance the contact performance between the clamping part 2211 and the second output end 121, so that the current can stably pass between the second output end 121 and the clamping part 2211, thereby improving the stability of the electrical connection between the pulse pressure transmission inner core 12 and the adapter structure 22, which is conducive to ensuring the stable conduction of the high-power microwave transmission device in harsh environments such as impact vibration, and thus is conducive to the transmission of high-power microwaves. At the same time, the embodiment of the present application adopts the elastic connector 3 to replace the traditional screw fastening method, and relies on the elastic force of the elastic connector 3 to automatically compensate for the processing error and assembly deviation of the contact surface between the pulse pressure transmission inner core 12 and the adapter structure 22, thereby simplifying the production process, reducing the production cost, and improving the assembly efficiency.

[0041] In some examples, such as Figure 1 , Figure 2 and Figures 4 to 6 As shown, the elastic connecting member 3 includes spring contact fingers.

[0042] Based on this, the embodiment of the present application can use spring contacts to enhance the contact performance between the second output end 121 of the pulse pressure transmission inner core 12 and the clamping portion 2211 of the adapter structure 22. By relying on the multi-point contact formed by the compression and deformation of the spring contacts, the current can pass evenly between the second output end 121 and the clamping portion 2211, further improving the stability of the electrical connection between the pulse pressure transmission inner core 12 and the adapter structure 22, which is beneficial to further ensure the stable conductivity of high-power microwave transmission devices in harsh environments such as impact and vibration, and thus is beneficial to the transmission of high-power microwaves.

[0043] As a possible implementation, Figure 1 and Figure 2 As shown, the receiving groove 222 has a groove opening and a groove bottom facing each other along the first direction, and the groove opening faces the outer peripheral surface of the second output end 121. Based on this, one side of the spring contact finger abuts against the outer peripheral surface of the pulse pressure transmission inner core 12 at the second output end 121, and the other side at least abuts against the groove bottom of the receiving groove 222, that is, abuts against the inner side surface of the adapter structure 22 at the second input interface 221. Figure 2As shown, the accommodating groove 222 has a groove depth H, and the groove depth H is smaller than the outer diameter of the spring contact finger, so that the spring contact finger can be in a compressed and deformed state in the accommodating groove 222. The elastic force provided by the spring contact finger after being compressed and deformed is used to provide stable contact between the outer peripheral surface of the pulse transmission inner core 12 and the inner side surface of the transition structure 22, thereby further improving the stability of the electrical connection between the pulse transmission inner core 12 and the transition structure 22, which is beneficial to further ensure the stable conductivity of the high-power microwave transmission device in harsh environments such as impact and vibration, and is further beneficial to the transmission of high-power microwaves.

[0044] The first direction can be found in Figure 1 and Figure 2 Direction A shown in .

[0045] The outer diameter of the spring contact finger refers to the maximum diameter of the outer spiral of the spring contact finger in the free state. For details, please refer to Figure 6 Dimension D shown.

[0046] In some examples, along the first direction, there is a difference X between the groove depth H of the receiving groove 222 and the outer diameter of the spring contact finger, 0<X≤0.5mm. Based on this, the outer diameter of the spring contact finger is 0~0.5mm larger than the groove depth H of the receiving groove 222, so that the spring contact finger located in the receiving groove 222 can provide a compression amount of 0~0.5mm, so that the spring contact finger can provide a stable connection between the outer peripheral surface of the pulse pressure transmission inner core 12 and the inner side surface of the transition structure 22, further improving the stability of the electrical connection between the pulse pressure transmission inner core 12 and the transition structure 22, which is conducive to further ensuring the stable conduction of the high-power microwave transmission device in harsh environments such as impact vibration, and thus facilitating the transmission of high-power microwaves.

[0047] Illustratively, along the first direction, the difference D between the groove depth H of the accommodating groove 222 and the outer diameter of the spring contact finger 31 can be 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm or 0.5mm, etc., which is only an example and not specifically limited.

[0048] For example, along the first direction, the depth of the receiving groove 222 can be 2.4 mm, and the outer diameter of the spring contact finger 31 can be 2.7 mm, which can provide a compression amount of 0.3 mm to ensure the electrical connection between the pulse pressure transmission core 12 and the switching structure 22. This is only an example and is not specifically limited.

[0049] Exemplarily, the spring contact finger includes a spring body and a coating, the material of the spring body includes beryllium copper alloy, and the coating includes a silver coating. Among them, the use of beryllium copper alloy material to make the spring body can ensure the elasticity of the spring contact finger, and silver plating on the surface of the spring body can improve the electrical conductivity of the spring contact finger, which is beneficial to further improve the electrical connection effect between the pulse pressure transmission inner core 12 and the transfer structure 22, and further ensure the stable conductivity of the high-power microwave transmission device in harsh environments such as impact vibration, thereby facilitating the transmission of high-power microwaves.

[0050] As a possible implementation, Figure 1 and Figure 3 As shown, there are flange surfaces arranged opposite to each other between the first input interface 211 and the first output end 111, and the first input interface 211 and the first output end 111 are threadedly connected via the flange surfaces. Based on this, the two flange surfaces are fixed together using bolts to ensure close contact between the joint housing 21 and the pulse pressure output outer cylinder.

[0051] Figure 7 Shown is a cross-sectional schematic diagram of a pulse compression assembly provided in an embodiment of the present application; Figure 8 Shown is a structural schematic diagram of a pulse compression component provided in an embodiment of the present application.

[0052] Based on the same inventive concept, Figure 7 and Figure 8 As shown, the present application also provides a pulse compression component, which includes a plurality of antenna feeding structures 4 and the high-power microwave transmission device described in the above embodiment.

[0053] Compared with the prior art, the beneficial effects of the pulse compression component are the same as the beneficial effects of the high-power microwave transmission device described in the above embodiment, and will not be described in detail here.

[0054] As a possible implementation, Figure 7 and Figure 8 As shown, the connector housing 21 also has a plurality of first output interfaces 212, and the adapter structure 22 also has a plurality of second output interfaces that are connected to the first output interfaces 212 in a one-to-one correspondence. Each first output interface 212 and the corresponding second output interface can serve as an output interface of the pulse pressure output connector 2. Based on this, the pulse pressure output connector 2 can have a plurality of output interfaces, and the interface connected to the pulse pressure output tube can serve as the input interface of the pulse pressure output connector 2, so that the pulse pressure output connector 2 can play a one-to-many branching role in the transmission process of high-power microwaves.

[0055] Exemplarily, the pulse pressure output structure may include a joint housing 21 and a pulse pressure inner core finger adapter ball joint installed inside the joint housing 21 .

[0056] As a possible implementation, as shown in Figure 7 and Figure 8 the antenna feed structure 4 includes an antenna feed tube 41 and a transmission inner core 42 correspondingly sleeved inside the corresponding antenna feed tube 41; each antenna feed tube 41 is connected to a first output interface 212 in one-to-one correspondence, and each transmission inner core 42 is connected to a second output interface in one-to-one correspondence. Among them, the number of antenna feed structures 4 is the same as the number of output interfaces of the pulse compression output joint 2, so that each output interface of the pulse compression output joint 2 is respectively connected to each antenna feed structure 4. Further, the first output interface 212 of the joint housing 21 in the pulse compression output joint 2 is connected to the antenna feed tube 41 in the antenna feed structure 4, and the second output interface of the conversion structure 22 in the pulse compression output joint 2 is connected to the transmission inner core 42 in the antenna feed structure 4, realizing the splitting of the high-power microwave signal transmitted in the pulse compression output tube into multiple paths.

[0057] Exemplarily, as shown in Figure 7 and Figure 8 the pulse compression output joint 2 can be a five-way joint, having one input interface and four output interfaces, that is, the joint housing 21 can have one first input interface 211 and four first output interfaces 212, and the conversion structure can have one second input interface 221 and four second output interfaces. Similarly, the pulse compression assembly includes four antenna feed structures 4, and the four output interfaces of the pulse compression output joint 2 are respectively connected to the four antenna feed structures 4. This is only an example here and is not specifically limited.

[0058] Exemplarily, as shown in Figure 7 and Figure 8 the pulse compression output tube can be a pulse compression output elbow tube. At this time, the pulse compression output elbow tube can include an outer cylinder of the pulse compression output elbow tube and a pulse compression transmission inner core coaxially sleeved inside the outer tube of the pulse compression transmission elbow tube; and / or, the antenna feed tube 41 can also be an antenna feed elbow tube, with a finger transmission inner core 42 sleeved inside; this is only an example here and is not specifically limited.

[0059] The above content is a further detailed description of the present application in combination with specific preferred implementation manners. It cannot be determined that the specific implementation of the present application is only limited to these descriptions. For those of ordinary skill in the technical field to which the present application belongs, without departing from the concept of the present application, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope of the present application.

[0060] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0061] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A high-power microwave transmission device, characterized in that: It includes a pulse pressure transmission tube and a pulse pressure output connector; The pulse pressure transmission tube comprises a pulse pressure transmission outer tube and a pulse pressure transmission inner core coaxially sleeved inside the pulse pressure transmission outer tube; the pulse pressure transmission outer tube has a first output end, and the pulse pressure transmission inner core has a second output end; The pulse pressure output connector comprises a connector housing and a switching structure arranged inside the connector housing, wherein the connector housing has a first input interface, and the first input interface is connected to the first output end; The adapter structure has a second input interface, the second input interface includes a clamping portion, and the second output end extends into the connector housing and is plugged into the clamping portion; A receiving groove is provided on one side of the clamping portion which is in close contact with the outer wall of the second output end. The high-power microwave transmission device also includes an elastic connector arranged in the receiving groove, one end of the elastic connector abuts against the outer peripheral surface of the second output end, and the other end of the elastic connector abuts against the receiving groove.

2. The high-power microwave transmission device according to claim 1, characterized in that: The elastic connecting member includes a spring contact finger.

3. The high-power microwave transmission device according to claim 2, characterized in that: The accommodating groove has a groove opening and a groove bottom opposite to each other along a first direction, and the groove opening faces the outer peripheral surface of the second output end; Along the first direction, the accommodating groove has a groove depth H, and the groove depth H is smaller than the outer diameter of the spring contact finger.

4. The high-power microwave transmission device according to claim 3, characterized in that: Along the first direction, there is a difference X between the groove depth H of the accommodating groove and the outer diameter of the spring contact finger, 0<X≤0.5mm.

5. The high-power microwave transmission device according to claim 2, characterized in that: The spring contact finger comprises a spring body and a plating layer, the material of the spring body comprises a beryllium copper alloy, and the plating layer comprises a silver plating layer.

6. The high-power microwave transmission device according to claim 1, characterized in that: There are flange surfaces arranged opposite to each other between the first input interface and the first output end, and the first input interface and the first output end are threadedly connected via the flange surfaces.

7. A pulse pressure component, characterized in that: The pulse compression component comprises a plurality of antenna feeding structures and the high-power microwave transmission device according to any one of claims 1 to 6.

8. The pulse compression assembly according to claim 7, characterized in that: The antenna feeding structure comprises an antenna feeding tube and a transmission inner core correspondingly sleeved inside the corresponding antenna feeding tube; The joint housing also has a plurality of first output interfaces, and the adapter structure also has a plurality of second output interfaces connected to the first output interfaces in a one-to-one correspondence; Each of the antenna feeding tubes is connected to each of the first output interfaces in a one-to-one correspondence, and each of the transmission cores is connected to each of the second output interfaces in a one-to-one correspondence.

Images