Flexible deformation bending waveguide tube and satellite communication equipment

Abstract

The utility model provides a flexible bent waveguide tube and satellite communication equipment, relates to the technical field of radio frequency communication, and solves the problem that the transmission performance is affected due to increased transmission loss caused by installation errors of waveguides in the satellite communication equipment. The flexible deformation bent waveguide tube can be respectively connected with a signal output module and a signal input module through the first connector and the second connector on the flexible deformation bent waveguide tube, and the flexible deformation bent waveguide tube can be flexibly deformed due to the arrangement of the plurality of annular grooves on the flexible deformation bent waveguide tube; therefore, a larger installation error between the signal output module and the signal input module is adapted, transmission of the radio frequency signal is completed with low transmission loss, and the transmission performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radio frequency communication technology, and in particular to a flexible and deformable bent waveguide and a satellite communication device. BACKGROUND

[0002] In recent years, in order to adapt to more and more application requirements of communication, monitoring, remote sensing and the like, the requirements for satellite communication devices in the field of satellite communication are also becoming more and more strict, such as requiring SSPA (Solid State Power Amplifier), SSPB (Solid State Power Booster) and BUC (Block Up-Converter) in the device to be made smaller and lighter.

[0003] There are many functional modules inside the satellite communication device, and the interconnection relationship thereof is relatively complex. In particular, important Ka-band high-power radio frequency signals between the functional modules are generally transmitted through waveguides. It is thus required that each installation interface between the waveguides is interconnected accurately, the cumulative error is strictly controlled, the installation position degree and flatness are ensured, so that the transmission loss between the waveguides is reduced to the lowest, and the best transmission performance is achieved.

[0004] However, since each functional module is originally a complex individual, it has a certain mechanical size cumulative error, and in addition, the installation error of each functional module in the SSPA / SSPB / BUC, the relative position accuracy between the waveguide input port and the waveguide output port of each functional module is poor, thereby increasing the transmission loss and causing the transmission performance to deteriorate. CONTENT OF THE INVENTION

[0005] The present application provides a flexible and deformable bent waveguide and a satellite communication device, which solve the problem that the transmission loss of the waveguide in the satellite communication device is increased due to installation error, thereby affecting the transmission performance. The flexible and deformable bent waveguide of the present application is adapted to the installation error between different modules, thereby realizing the transmission of radio frequency signals between different modules, and having a low transmission loss, which helps to improve the transmission performance.

[0006] In a first aspect, the present application provides a flexible and deformable bent waveguide, which comprises a waveguide main body, a first connecting head and a second connecting head.

[0007] The waveguide body has two curved ends curved towards the same direction, a plurality of annular grooves are arranged on the outer side wall of the waveguide body, and a transmission channel is arranged in the waveguide body to transmit a radio frequency signal; the first connecting head is arranged at the first end of the waveguide body, and the first connecting head comprises a first through hole matched with the size of the transmission channel and a plurality of first connecting holes for connecting with external devices, and the first through hole is used for transmitting the radio frequency signal; the second connecting head is arranged at the second end of the waveguide body, and the second connecting head comprises a second through hole matched with the size of the transmission channel and a plurality of first connecting holes for connecting with external devices, and the second through hole is used for transmitting the radio frequency signal.

[0008] In a second aspect, the application further provides a satellite communication device, which comprises a signal input module, a signal output module and the flexible and deformable bent waveguide provided in the first aspect, and the signal input module and the signal output module are communicated through the flexible and deformable bent waveguide to transmit a radio frequency signal through the flexible and deformable bent waveguide.

[0009] The flexible and deformable bent waveguide can connect the signal output module and the signal input module through the first connecting head and the second connecting head respectively, and the flexible and deformable bent waveguide can be deformed flexibly due to the plurality of annular grooves arranged thereon, so as to adapt to a larger installation error between the signal output module and the signal input module, to complete the transmission of the radio frequency signal with lower transmission loss, and to help improve the transmission performance. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 A structural schematic diagram of the flexible and deformable bent waveguide provided in an embodiment of the application;

[0011] Figure 2 A sectional view schematic diagram of the flexible and deformable bent waveguide provided in an embodiment of the application;

[0012] Figure 3 A structural schematic diagram of the flexible and deformable bent waveguide provided in an embodiment of the application; Figure 2 An enlarged schematic diagram of the position of the middle circle.

[0013] REFERENCE NUMERALS:

[0014] Waveguide body 110, first connecting head 120, second connecting head 130, annular groove 111, first through hole 121, first connecting hole 122, second through hole 131, second connecting hole 132 and transmission channel 210. DETAILED DESCRIPTION

[0015] The application examples are further described in detail below with reference to the drawings and examples. It can be understood that the specific examples described herein are merely intended to explain the application examples, and are not a limitation on the application examples. In addition, it should be noted that, for ease of description, only parts related to the application examples are shown in the drawings, and those skilled in the art, after reading the description of the application, should be able to think of any combination of technical features as long as the technical features are not mutually contradictory, which can constitute an optional implementation manner.

[0016] The terms "first", "second", and the like in the specification and claims of the application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the application examples can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class, and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after. In the description of the application, "a plurality of" means two or more, and "several" means one or more.

[0017] In recent years, in order to adapt to the increasing demand for communication, monitoring, remote sensing and other applications, the requirements for satellite communication equipment in the field of satellite communication are becoming more and more strict, such as requiring its internal devices to be smaller. Satellite communication equipment has many internal functional modules, and the interconnection relationship is complex. Moreover, each functional module is a complex individual, and has a certain mechanical size cumulative error. In addition, the installation error of each functional module in SSPA / SSPB / BUC will further cause the relative position accuracy between the waveguide input port and the waveguide output port of each functional module to be poor, thereby increasing the transmission loss and causing the transmission performance to deteriorate.

[0018] To solve the above problems, a solution provided in the related art is to use a hard waveguide tube to connect the functional modules inside the equipment. Although the hard waveguide tube has small loss, the rigidity of the hard waveguide tube is too strong, which can easily cause the hard waveguide tube to be unable to adapt to the cumulative error between the functional modules, and thus the hard waveguide tube cannot be smoothly installed between the functional modules. Even if the hard waveguide tube is forcibly installed by expanding the mounting hole, obvious problems such as waveguide misalignment and waveguide tilt still occur, which brings greater loss and directly affects the transmission of high-power radio frequency signals.

[0019] Another solution is to select a soft waveguide to connect the functional modules inside the device. Although the soft waveguide can adapt to the cumulative error between the functional modules, the soft waveguide itself has too much loss, and in the transmission scenario of a high-power radio frequency signal, the soft waveguide will lose the output power, that is, when transmitting a radio frequency signal with the same function, a larger output power is needed.

[0020] To this end, the present application provides a flexible and deformable bend waveguide, which can be applied to a satellite communication device to transmit a radio frequency signal therein. The flexible and deformable bend waveguide is arranged between a signal input module and a signal output module of the device to transmit the radio frequency signal from the signal input module to the signal output module through the flexible and deformable bend waveguide.

[0021] In an embodiment, the flexible and deformable bend waveguide includes a waveguide body, a first connecting head and a second connecting head. The waveguide body has a transmission channel arranged inside to transmit a radio frequency signal. It can be understood that the waveguide body is hollow so that the inside of the waveguide body can form a channel for transmitting a radio frequency signal, i.e. the transmission channel mentioned above. The two ends of the waveguide body are curved ends curved towards the same direction, i.e. the two ends of the waveguide body are curved ends curved towards the same side of the waveguide body, for example, the planes of the two end ports are parallel to the axial direction of the waveguide body.

[0022] The first connecting head is arranged at the first end of the waveguide body, and the first connecting head includes a first through hole matched in size with the transmission channel. It can be understood that the radio frequency signal can also be transmitted through the first through hole of the first connecting head. In addition, the first connecting head also includes a plurality of first connecting holes for connecting with external devices, for example, if the first end of the flexible and deformable bend waveguide needs to be connected to a module generating a radio frequency signal, correspondingly, the first connecting holes on the first connecting head are used as mounting holes, and then the first connecting head is fixed on the module by means of bolts and nuts or positioning pins and the like.

[0023] The second connecting head is arranged at the second end of the waveguide body, and the second connecting head includes a second through hole matched in size with the transmission channel. It can be understood that the radio frequency signal can also be transmitted through the second through hole of the second connecting head. In addition, the second connecting head also includes a plurality of second connecting holes for connecting with external devices, for example, if the second end of the flexible and deformable bend waveguide needs to be connected to a module receiving a radio frequency signal, correspondingly, the second connecting holes on the second connecting head are used as mounting holes, and then the second connecting head is fixed on the module by means of bolts and nuts or positioning pins and the like.

[0024] Further, a plurality of annular grooves are arranged on the outer sidewall of the waveguide body, which can provide a deformation space for the flexible deformation of the flexible deformation bending waveguide when there is an installation error in the connected module, so that the flexible deformation bending waveguide can be deformed to adapt to the connected module, and the transmission loss is also small. It can be understood that in an application scenario, the flexible deformation bending waveguide is used to connect the signal output module for generating radio frequency signals and the signal input module for receiving radio frequency signals. If there is an installation error between the signal output module and the signal input module, such as the two are not relatively arranged but offset, the flexible deformation bending waveguide provided by the present application can be installed to adapt to the installation error between the two. The flexible deformation bending waveguide is connected to the signal output module and the signal input module through the first connecting head and the second connecting head thereon. In addition, due to the arrangement of the plurality of annular grooves thereon, the flexible deformation bending waveguide can be deformed to adapt to the error between the signal output module and the signal input module, thereby transmitting radio frequency signals between the signal output module and the signal input module with smaller transmission loss.

[0025] Therefore, the flexible deformation bending waveguide provided by the present application can adapt to the installation error between different modules, thereby realizing the transmission of radio frequency signals between different modules with lower transmission loss, which helps to improve the transmission performance.

[0026] In some embodiments, the annular grooves are arranged at the maximum deformation point of the waveguide body. It can be understood that the maximum deformation point refers to the position of the maximum deflection deformation or displacement under the stress state of a certain structure or material. For the waveguide body, the maximum deformation point is located in the middle of the waveguide body. For example, 4 annular grooves are arranged at this position, and the depth of each annular groove is greater than or equal to 0.4mm and less than or equal to 0.6mm, and the width of each annular groove is greater than or equal to 1.9mm and less than or equal to 2.1mm. Optionally, in an embodiment, the depth of each annular groove is 0.5mm, and the width of each annular groove is 2mm. In this way, the annular grooves arranged at the maximum deformation point have sufficient width and depth, which can make the flexible deformation bending waveguide more easily deform.

[0027] In an embodiment, the plurality of annular grooves are arranged at a predetermined interval. For example, when there are 4 annular grooves, the 4 annular grooves are arranged at a predetermined interval, so that the deflection deformation of the flexible deformation bending waveguide can be increased, thereby adapting to a larger installation error between the signal output module and the signal input module, and completing the transmission of radio frequency signals with lower transmission loss.

[0028] In some embodiments, the bending radius of the two ends of the waveguide body is greater than or equal to 14.9 mm and less than or equal to 15.1 mm. It can be understood that the two ends of the waveguide body are the bending parts of the flexible and deformable bending waveguide, which can affect the performance of the waveguide. Optionally, in an embodiment, the bending radius of the two ends of the waveguide body is 15 mm. The bending radius of the waveguide body of the present scheme can adapt to the installation error between the signal output module and the signal input module, and at the same time, can optimize the performance of the flexible and deformable bending waveguide.

[0029] In copper, steel and other materials, hydrogen embrittlement phenomenon is easy to occur. Taking copper material as an example, the hydrogen embrittlement phenomenon is due to the hydrogen atoms adsorbed in the copper and copper alloy under stress to form hydrogen atom groups, which leads to the decrease of the toughness of the copper material and easy to break. In order to avoid the flexible and deformable bending waveguide from breaking due to hydrogen embrittlement phenomenon, in an embodiment, the flexible and deformable bending waveguide needs to be dehydrogenated in a vacuum furnace, such as in a vacuum furnace with a vacuum degree greater than or equal to 0.005 Pa, and the dehydrogenation treatment is carried out at a baking temperature of 250°C for 48 hours. That is, the flexible and deformable bending waveguide provided by the present scheme is a waveguide that is dehydrogenated in a vacuum furnace with a vacuum degree greater than or equal to 0.005 Pa at a baking temperature of 250°C for 48 hours. Therefore, the flexible and deformable bending waveguide can eliminate the influence of hydrogen embrittlement phenomenon, so that the whole device is more firm and reliable.

[0030] In some embodiments, the inner side wall of the flexible and deformable bending waveguide is also plated with silver to form a silver-plated layer on the inner side wall. It can be understood that the flexible and deformable bending waveguide forms a transmission channel inside, that is, there is an inner cavity in the flexible and deformable bending waveguide for transmitting radio frequency signals, and a silver-plated layer is formed on the side wall of the inner cavity. The silver-plated layer provided inside the flexible and deformable bending waveguide can improve the transmission performance of the waveguide and help reduce the loss of radio frequency signals passing through the flexible and deformable bending waveguide.

[0031] Figure 1The structural diagram of the flexible deformation bending waveguide provided by an embodiment of the present application is shown in the figure. In an embodiment, the flexible deformation bending waveguide comprises a waveguide body 110, a first connecting head 120 and a second connecting head 130. The two ends of the waveguide body 110 are both curved towards the same direction, for example, the bending radius of the two ends of the waveguide body 110 is 15 mm. A plurality of annular grooves 111 are arranged on the outer side wall of the waveguide body 110, the annular grooves 111 are arranged at the maximum deformation point of the waveguide body 110, and the depth of each annular groove 111 is 0.5 mm and the width of each annular groove 111 is 2 mm. In addition, the plurality of annular grooves 111 are arranged at a preset interval, for example, four annular grooves 111 are arranged. In this way, based on the annular grooves 111, the flexible deformation bending waveguide can generate a larger deformation amount, thereby adapting to a larger installation error between the signal output module and the signal input module, and completing the transmission of the radio frequency signal with lower transmission loss.

[0032] The inside of the waveguide body 110 is provided with a transmission channel (not shown in the figure) for transmitting the radio frequency signal. The inside of the flexible deformation bending waveguide forms the transmission channel, that is, there is an inner cavity in the flexible deformation bending waveguide for transmitting the radio frequency signal, and a silver plating layer is formed on the side wall of the inner cavity to reduce the loss of the radio frequency signal when passing through the flexible deformation bending waveguide.

[0033] The first connecting head 120 is arranged at the first end of the waveguide body 110, and the first connecting head 120 comprises a first through hole 121 matched with the size of the transmission channel and a plurality of first connecting holes 122 for connecting external devices. The second connecting head 130 is arranged at the second end of the waveguide body 110, and the second connecting head 130 comprises a second through hole 131 matched with the size of the transmission channel and a plurality of first connecting holes 122 for connecting external devices.

[0034] It is conceivable that the first through hole 121 and the second through hole 131 are both used for transmitting the radio frequency signal, the first connecting head 120 is used for connecting external devices, such as devices for outputting radio frequency signals, through the first connecting holes 122 thereon, and the second connecting head 130 is used for connecting another external device, such as a device for receiving radio frequency signals, through the second connecting holes 132 thereon, so that the radio frequency signal can be transmitted from one end of the flexible deformation bending waveguide to the other end.

[0035] Furthermore, the flexible deformation bending waveguide is a waveguide that has been subjected to hydrogen removal treatment, for example, in a vacuum furnace with a vacuum degree greater than or equal to 0.005 Pa, at a baking temperature of 250 ℃ for 48 hours of hydrogen removal treatment. That is, the flexible deformation bending waveguide provided by the present application is a waveguide that has been subjected to hydrogen removal treatment in a vacuum furnace with a vacuum degree greater than or equal to 0.005 Pa, at a baking temperature of 250 ℃ for 48 hours.

[0036] Through the test of the transmission radio frequency signal, the detection results are as follows: the corresponding detection results include the insertion loss and the standing wave ratio of the flexible deformation bending waveguide, the hard waveguide and the soft waveguide in the related art:

[0037] Flexible deformable bend waveguide Rigid waveguide Flexible waveguide Insertion loss ≤ 0.2 dB ≤ 2.05 dB ≤ 2 dB VSWR ≤1.15 ≤1.33 ≤1.25

[0038] The insertion loss refers to the loss caused by the signal passing through a device, a device or a connection in the signal transmission process. The insertion loss is usually expressed in decibels (dB), and the smaller the value is, the smaller the loss is, and the higher the signal transmission efficiency is. The standing wave ratio refers to the ratio of the amplitude of the wave crest voltage to the wave trough voltage of the transmission line. When the standing wave ratio is equal to 1, it means that the impedance of the feeder and the antenna is completely matched, and at this time, the high-frequency energy is completely radiated by the antenna without reflection loss. When the standing wave ratio is infinite, it means that the energy is completely not radiated.

[0039] Therefore, the flexible deformation bending waveguide provided by the scheme can adapt to the installation error between different modules, and can also have better transmission performance, and the insertion loss is smaller, that is, the device can effectively reduce the transmission loss, and the standing wave ratio is good, which helps to improve the transmission performance.

[0040] Figure 2 The cross-sectional view of the flexible deformation bending waveguide provided by an embodiment of the present application is shown in Figure 2 The flexible deformation bending waveguide has a cavity inside for transmitting radio frequency signals, that is, a transmission channel 210 is provided for the radio frequency signals, and the two ends of the flexible deformation bending waveguide are curved to form curved ends in the same direction, such as the two ends are curved downward. As for this, the flexible deformation bending waveguide is connected to different devices through the first connecting head 120 and the second connecting head 130 thereon, respectively, so as to provide a channel for transmitting radio frequency signals for the devices with installation error, and transmit the radio frequency signals with smaller transmission loss. Figure 3 The enlarged view of the position of the middle circle is shown in Figure 2 As shown in Figure 3 In an embodiment, the bottom of each annular groove 111 is provided with a transition fillet, so that the stress of the annular groove 111 is more uniform when the flexible deformation bending waveguide is deformed, which helps to prevent the flexible deformation bending waveguide from breaking.

[0041] The satellite communication device also includes a signal input module, a signal output module, and the flexible and deformable bent waveguide. The signal input module and the signal output module are connected through the flexible and deformable bent waveguide to transmit radio frequency signals through the flexible and deformable bent waveguide, i.e., the signal output module generates corresponding radio frequency signals, which are then transmitted to the signal input module through the flexible and deformable bent waveguide. In this way, the satellite communication device can adapt to installation errors between the signal input module and the signal output module through the flexible and deformable bent waveguide, and has the corresponding effects of the flexible and deformable bent waveguide, so that radio frequency signals can be transmitted between internal modules with small transmission loss, thereby ensuring that the device has good transmission performance.

[0042] It should also be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0043] Note that the above are only preferred embodiments of the present application and the principles of technology used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A flexible deformable curved waveguide, characterized by, The application relates to a flexible and deformable bending waveguide. The waveguide body is provided with a plurality of annular grooves on the outer side wall, and the inside of the waveguide body is provided with a transmission channel for transmitting a radio frequency signal. The first connecting head is arranged at the first end of the waveguide body, and the first connecting head comprises a first through hole matched with the size of the transmission channel and a plurality of first connecting holes for connecting with external devices, and the first through hole is used for transmitting the radio frequency signal. The second connecting head is arranged at the second end of the waveguide body, and the second connecting head comprises a second through hole matched with the size of the transmission channel and a plurality of first connecting holes for connecting with external devices, and the second through hole is used for transmitting the radio frequency signal.

2. The elastically deformable bending waveguide of claim 1, wherein, The annular grooves are arranged at the maximum deformation points of the waveguide body, and the depth of each annular groove is greater than or equal to 0.4 mm and less than or equal to 0.6 mm, and the width of each annular groove is greater than or equal to 1.9 mm and less than or equal to 2.1 mm.

3. The elastically deformable bending waveguide of claim 2, wherein, The depth of each annular groove is 0.5 mm, and the width of each annular groove is 2 mm.

4. The flexible deformed bend waveguide of any of claims 1-3, wherein, The plurality of annular grooves are arranged at a preset interval.

5. The elastically deformable bending waveguide of claim 4, wherein, The bottom of each annular groove is arranged as a transition round corner.

6. The elastically deformable bending waveguide of claim 1 or 2, wherein, The bending radius of the two ends of the waveguide body is greater than or equal to 14.9 mm and less than or equal to 15.1 mm.

7. The elastically deformable bending waveguide of claim 6, wherein, The bending radius of the two ends of the waveguide body is 15 mm.

8. The elastically deformable bending waveguide of claim 1 or 2, wherein, The flexible and deformable bending waveguide is a waveguide subjected to hydrogen removal treatment at a baking temperature of 250 DEG C for 48 hours in a vacuum furnace with a vacuum degree greater than or equal to 0.005 Pa.

9. The elastically deformable bending waveguide of claim 1 or 2, wherein, The inner side wall of the flexible and deformable bending waveguide is provided with a silver plating layer.

10. A satellite communication device, characterized by The application relates to a flexible and deformable bending waveguide. The signal input module and the signal output module are connected through the flexible and deformable bending waveguide, so that a radio frequency signal can be transmitted through the flexible and deformable bending waveguide.

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