CN107134629B - Design method and structure of a structural electrical integrated waveguide network - Google Patents

Abstract

The present invention discloses a design method and structure of a structure-electrical integrated waveguide network, wherein, the method includes: according to the first relative position between the installed and fixed Ka frequency band equipment and the Ka antenna, selecting the first relative position corresponding to the first relative position Matching first metal waveguide; according to the installation position of the Ka-band equipment, determine the installation position of the first metal waveguide and install it; according to the second relative position between the installed first metal waveguide and the Ka antenna, select the second relative position The first flexible waveguide with matching positions; according to the selected first metal waveguide and the first flexible waveguide, multiple candidate waveguide networks are obtained through structural digital modeling and plugging between simulated devices; multiple candidate waveguides are calculated separately For the first signal attenuation of the communication link corresponding to the network, one or more candidate waveguide networks whose first signal attenuation is less than or equal to the total attenuation threshold are used as the designed waveguide network. The invention realizes the structural electrical integration design of the waveguide network.

Description

Design method and structure of a structural electrical integrated waveguide network

technical field

The invention belongs to the field of waveguide technology, and in particular relates to a design method and structure of a waveguide network with structural electrical integration.

Background technique

The violent friction between the hypersonic vehicle and the surrounding air causes the temperature of the surrounding air to rise sharply, resulting in the ionization of the material on the surface of the projectile and the air, forming a plasma sheath around the projectile. When radio waves pass through the plasma sheath, the signal will be attenuated. In severe cases It will cause interruption of radio signals. Experiments have shown that Ka-band signals can increase communication frequency and reduce the impact of plasma.

Ka-band signals are transmitted between Ka-band equipment and Ka antennas, but Ka-band signals are attenuated greatly in traditional high-frequency cables, so high-frequency waveguides need to be used instead of high-frequency cables for low-loss signal transmission. The high-frequency waveguide is a metal structural part and has electrical properties. It mainly uses a metal cavity to transmit signals. Therefore, the application of the waveguide network puts forward certain design requirements for the spatial structure. At the same time, the layout of the hypersonic vehicle cabin is compact, the installation space of the instrument is complex, and the installation structure of the waveguide network will affect its electrical performance, which further increases the difficulty of waveguide network design.

Contents of the invention

The technical solution of the present invention is to overcome the deficiencies of the prior art, provide a design method and structure of a structural and electrical integrated waveguide network, realize a reasonable layout of the waveguide network, and ensure electrical performance.

In order to solve the above-mentioned technical problems, the present invention discloses a design method for structural and electrical integrated waveguide networks, including:

Selecting a first metal waveguide that matches the first relative position according to the first relative position between the installed and fixed Ka frequency band device and the installed and fixed Ka antenna;

determining and installing the installation location of the first metal waveguide according to the installation location of the Ka-band device;

selecting a first flexible waveguide that matches the second relative position according to a second relative position between the installed first metal waveguide and the Ka antenna;

According to the selected first metal waveguide and the first flexible waveguide, through structural digital modeling and plugging between simulated devices, a plurality of candidate waveguide networks are obtained;

The first signal attenuation of the communication links corresponding to the plurality of candidate waveguide networks are respectively calculated, and one or more candidate waveguide networks whose first signal attenuation is less than or equal to the total attenuation threshold are used as the designed waveguide network.

In the design method of the above-mentioned structural electrical integration waveguide network, it also includes:

According to the available installation space in the instrument compartment of the aircraft, the Ka frequency band equipment and the Ka antenna are installed and fixed on the mounting bracket in the instrument compartment of the aircraft according to the set distance interval; wherein, the set distance interval is: 200mm～300mm .

In the above method for designing a waveguide network with structural electrical integration, according to the first relative position between the installed and fixed Ka frequency equipment and the installed and fixed Ka antenna, the first relative position matching the first relative position is selected. Metallic waveguides, including:

According to the first relative position between the installed and fixed Ka frequency band equipment and the installed and fixed Ka antenna, the available space between the Ka frequency band equipment Ka antennas is determined;

Screening and obtaining p candidate metal waveguides satisfying the available space from the first sample set; wherein, p≥1;

Calculate the signal attenuation corresponding to the p candidate metal waveguides respectively, to obtain the second signal attenuation corresponding to each candidate metal waveguide;

A metal waveguide candidate whose second signal attenuation is less than or equal to a first sub-attenuation threshold is determined as the first metal waveguide; wherein the first sub-attenuation threshold is smaller than the total attenuation threshold.

In the design method of the waveguide network with structural electrical integration mentioned above, the signal attenuation β ₁ corresponding to the alternative metal waveguide is calculated by the following formula:

in, c represents the speed of light, λ represents the working wavelength of the candidate metal waveguide, μ represents the magnetic permeability of the candidate metal waveguide, σ represents the electrical conductivity of the candidate metal waveguide, a represents the rectangular width of the candidate metal waveguide, and b represents the alternative The size of the narrow side of the metal waveguide, m represents the number of changes of the maximum value of the rectangular waveguide field of the alternative metal waveguide on the wide side of the rectangle, n represents the change of the maximum value of the rectangular waveguide field of the alternative metal waveguide on the narrow side of the rectangle frequency;

The shape of the optional metal waveguide includes at least one of the following shapes: T-shape, L-shape and U-shape.

In the above method for designing a structural and electrical integrated waveguide network, according to the second relative position between the installed first metal waveguide and the Ka antenna, select the first flexible waveguide that matches the second relative position ,include:

determining a distance between the first metal waveguide and the Ka antenna according to a second relative position between the installed first metal waveguide and the Ka antenna;

Screening from the second sample set to obtain q candidate flexible waveguides satisfying the distance; wherein, q≥1;

respectively calculating the signal attenuation corresponding to the q flexible waveguides to obtain the third signal attenuation corresponding to each flexible waveguide;

A candidate flexible waveguide whose third signal attenuation is less than or equal to a second sub-attenuation threshold is determined as the first flexible waveguide; wherein the second sub-attenuation threshold is smaller than the total attenuation threshold.

In the design method of the waveguide network with integrated structure and electrical integration, the signal attenuation β ₂ corresponding to the alternative flexible waveguide is calculated by the following formula:

β ₂ =cN+dL

Wherein, c and d represent the plug attenuation coefficient and the length attenuation coefficient of the alternative flexible waveguide respectively, N represents the number of plugs of the alternative flexible waveguide, and L represents the length of the alternative flexible waveguide.

In the design method of the above-mentioned structural electrical integration waveguide network, it also includes:

According to a third relative position between the installed first metal waveguide and the first flexible waveguide, select a wave-to-channel conversion plug that matches the third relative position;

Connecting the first metal waveguide to the first flexible waveguide by using the wave-to-coupling plug;

Wherein, the shape of the wave-to-wave conversion plug includes at least one of the following shapes: L-type and I-type; the signal attenuation β ₃ of the wave-to-wave conversion plug: β ₃ =τM; where, τ represents the wave-to-wave conversion plug The attenuation coefficient, M represents the number of wave with the conversion plug.

In the above method for designing a waveguide network with integrated structure and electrical integration, the first signal attenuation of the communication links corresponding to the plurality of candidate waveguide networks is calculated respectively, and the first signal attenuation is less than or equal to one or more of the total attenuation threshold Alternative waveguide networks as design waveguide networks include:

respectively calculating the signal attenuation of the first metal waveguide, the signal attenuation of the first flexible waveguide and the signal attenuation of the wave-to-converter plug;

A sum of the calculated signal attenuation of the first metal waveguide, the signal attenuation of the first flexible waveguide, and the signal attenuation of the wave-to-conversion plug is used as the first signal attenuation.

In the design method of the above-mentioned structural electrical integration waveguide network, it also includes:

selecting a plurality of support brackets according to the installation position of the first metal waveguide and the structural size of the first metal waveguide;

Install the fixed ends of the plurality of support brackets in the aircraft instrument compartment according to set intervals; wherein, the support ends of the plurality of support brackets are connected to the first metal waveguide for supporting the first metal waveguide ;

Wherein, the set interval is: 200 mm; the length of the supporting end of the supporting bracket is 50 mm, and the wall thickness is 2 mm; the cross section of the supporting bracket is triangular.

Correspondingly, the present invention also discloses a waveguide network structure with structural electrical integration, including: Ka frequency band equipment, Ka antenna, metal waveguide, flexible waveguide, wave-to-wave conversion plug and multiple supporting brackets;

The Ka frequency band equipment and the Ka antenna are installed on the mounting bracket in the aircraft instrument compartment according to the set distance interval;

The metal waveguide is connected to the Ka-band equipment;

The metal waveguide is connected to the head end of the flexible waveguide through a wave-to-coupling conversion plug;

The end of the flexible waveguide is connected to the Ka antenna;

The fixed ends of the plurality of support brackets are installed in the aircraft instrument compartment according to set intervals; the plurality of support brackets are used to support the metal waveguide.

The present invention has the following advantages:

(1) According to the structural electrical integration waveguide network design method of the present invention, according to the relative position between the Ka frequency band equipment and the Ka antenna, respectively carry out the waveguide network design of the metal waveguide-flexible waveguide, while rationally laying out the waveguide network, The signal attenuation calculation of the communication link is carried out to ensure that the electrical performance of the waveguide network meets the index requirements, and the structural and electrical integration design of the waveguide network is realized.

(2) The waveguide network design method with structural electrical integration of the present invention realizes the optimization of the laying path of the waveguide network, compresses the waveguide space, reduces link attenuation, and improves electrical performance.

(3) The structure and electrical integration waveguide network design method of the present invention can use flexible waveguides instead of metal waveguides under the premise of ensuring reliable links, and the combination of flexible waveguides and metal waveguides increases the designability of waveguide networks sex.

(4) The design method of the structural and electrical integrated waveguide network of the present invention comprehensively considers the structural parameters such as the bending radius and cavity length of the metal waveguide, and adopts the design scheme of wave-to-conversion, which improves the manufacturability.

(5) In the structure-electrical integration waveguide network design method of the present invention, the cooperative design of the waveguide network mechanical interface is adopted between the Ka-band equipment and the metal waveguide, which reduces the installation difficulty of the metal waveguide. In addition, the design of the support bracket improves The overall rigidity of the metal waveguide improves the connection reliability of the metal waveguide.

Description of drawings

Fig. 1 is a flow chart of the steps of a method for designing a structural-electrical-integrated waveguide network in an embodiment of the present invention;

FIG. 2 is a schematic diagram of installation of a Ka frequency band device and a Ka antenna in an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a structural electrical integrated waveguide network structure in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the metal waveguide shown in FIG. 3 .

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the public implementation manners of the present invention in detail with reference to the accompanying drawings.

The invention discloses a design method and structure of a structure-electrical integrated waveguide network, which is suitable for the complex space structure of the hypersonic aircraft cabin, through structural digital modeling, and simulating the plugging between devices, so as to determine the space envelope of the waveguide network , to complete the spatial design of the waveguide network. While designing the waveguide network, the communication link attenuation calculation is performed to ensure that the performance of the waveguide meets the index requirements and realize the integrated design of the electrical structure.

Referring to FIG. 1 , it shows a flow chart of the steps of a design method for a structural-electrical-integrated waveguide network in an embodiment of the present invention. In this embodiment, the design method of the structural electrical integration waveguide network includes:

Step 101, according to the available installation space in the instrument compartment of the aircraft, install and fix the Ka frequency band equipment and the Ka antenna on the mounting bracket in the instrument compartment of the aircraft according to the set distance interval.

In this embodiment, according to the available installation space in the aircraft instrument cabin, the Ka-band equipment and the Ka antenna can be installed adjacently. Preferably, the set distance interval is: 200mm-300mm (including 200mm and 300mm). Wherein, the set distance interval refers to the straight-line distance between the Ka frequency band device and the device interface of the Ka antenna.

Step 102, according to the first relative position between the installed and fixed Ka-band equipment and the installed and fixed Ka antenna, select a first metal waveguide that matches the first relative position.

In this embodiment, according to the first relative position between the installed and fixed Ka-band equipment and the installed and fixed Ka-band antenna, the available space between the Ka-band equipment Ka antennas can be determined; furthermore, it can be obtained from the first The sample set is screened to obtain p (p≥1) candidate metal waveguides that satisfy the available space; the signal attenuation corresponding to the p candidate metal waveguides is calculated respectively, and the first corresponding to each candidate metal waveguide is obtained. Second signal attenuation: determining a metal waveguide candidate whose second signal attenuation is less than or equal to a first sub-attenuation threshold as the first metal waveguide.

Wherein, the first sub-attenuation threshold is smaller than the total attenuation threshold. The first sample set may be a set of metal waveguides obtained in any manner such as historical experience data (big data), and the first sample set may include: various shapes, sizes, Alternative metal waveguides in various sizes etc. For example, the shape of the alternative metal waveguide includes at least one of the following shapes: T-shape, L-shape and U-shape.

Preferably, in this embodiment, the signal attenuation β ₁ corresponding to the alternative metal waveguide can be calculated by the following formula:

in, c represents the speed of light, λ represents the working wavelength of the candidate metal waveguide, μ represents the magnetic permeability of the candidate metal waveguide, σ represents the electrical conductivity of the candidate metal waveguide, a represents the rectangular width of the candidate metal waveguide, and b represents the alternative The size of the narrow side of the metal waveguide, m represents the number of changes of the maximum value of the rectangular waveguide field of the alternative metal waveguide on the wide side of the rectangle, n represents the change of the maximum value of the rectangular waveguide field of the alternative metal waveguide on the narrow side of the rectangle frequency.

Step 103: Determine and install the installation location of the first metal waveguide according to the installation location of the Ka-band device.

In this embodiment, the first metal waveguide may be directly connected and installed with the Ka-band device, that is, the installation position of the first metal waveguide is determined and installed according to the installation position of the Ka-band device.

Step 104, according to the second relative position between the installed first metal waveguide and the Ka antenna, select a first flexible waveguide that matches the second relative position.

The Ka metal waveguide has good performance, but takes up space. Compared with the metal waveguide, the Ka flexible waveguide is more flexible and more designable, but the signal attenuation is large. The combination of the two can optimize the electrical performance and structural performance of the waveguide network. In this embodiment, the design method combining the metal waveguide and the flexible waveguide is adopted, and the parameters such as the diameter of the flexible waveguide, the turning radius, and the length of the straight line section of the joint are mainly considered to ensure that after the flexible waveguide is used instead of the metal waveguide, the overall waveguide network can be simultaneously Meet the space plug-in requirements and electrical performance index requirements.

In this embodiment, according to the second relative position between the installed first metal waveguide and the Ka antenna, the distance between the first metal waveguide and the Ka antenna can be determined; furthermore, the distance between the first metal waveguide and the Ka antenna can be determined; In the two sample sets, q (q≥1) candidate flexible waveguides satisfying the distance are screened; the signal attenuation corresponding to the q candidate flexible waveguides is calculated respectively, and the third corresponding to each candidate flexible waveguide is obtained. Signal attenuation: determining a candidate flexible waveguide whose third signal attenuation is less than or equal to a second sub-attenuation threshold as the first flexible waveguide.

Wherein, the second sub-attenuation threshold is smaller than the total attenuation threshold. The second sample set may be a set of flexible waveguides obtained in any manner such as historical experience data (big data), and the second sample set may include: various diameters, turning radii, and joints suitable for any size of space Alternative flexible waveguides with varying lengths of straight segments etc.

Preferably, in this embodiment, the signal attenuation β ₂ corresponding to the alternative flexible waveguide can be calculated by the following formula:

β ₂ =cN+dL

Wherein, c and d represent the plug attenuation coefficient and the length attenuation coefficient of the alternative flexible waveguide respectively, N represents the number of plugs of the alternative flexible waveguide, and L represents the length of the alternative flexible waveguide.

Step 105, according to the selected first metal waveguide and the first flexible waveguide, through structural digital modeling and simulating the plugging between devices, a plurality of candidate waveguide networks are obtained.

In this embodiment, through structural digital modeling, multiple feasible plugging modes can be simulated to realize plugging between devices, and then multiple candidate waveguide networks can be obtained.

Step 106: Calculate the first signal attenuation of the communication links corresponding to the multiple candidate waveguide networks, and use one or more candidate waveguide networks whose first signal attenuation is less than or equal to the total attenuation threshold as the designed waveguide network.

In this embodiment, it is necessary to comprehensively consider the structure and electrical performance of the candidate waveguide networks, so after obtaining multiple candidate waveguide networks, it is also necessary to verify the electrical performance of the candidate waveguide networks: respectively calculate the multiple candidate waveguide networks Select the first signal attenuation of the communication link corresponding to the waveguide network, and use one or more candidate waveguide networks whose first signal attenuation is less than or equal to the total attenuation threshold as the final designed waveguide network for application.

In a preferred embodiment of the present invention, in consideration of the bending manufacturability problems caused by the bending of the metal waveguide, it can also be selected according to the third relative position between the installed first metal waveguide and the first flexible waveguide. A wave-to-wave conversion plug that matches the third relative position; using the wave-to-wave conversion plug to connect the first metal waveguide to the first flexible waveguide; thereby reducing the number of turns of the first metal waveguide, Simplify the process flow. Wherein, the shape of the wave-to-conversion plug includes at least one of the following shapes: L-type and I-type, which meet the needs of plugging diversity, and the design of the wave-to-converter plug changes the direction of the interface, avoiding the need for metal waveguide The technical problems of bending caused by turning.

Wherein, the signal attenuation β ₃ of the wave-to-wave conversion plug: β ₃ =τM; wherein, τ represents the attenuation coefficient of the wave-to-wave conversion plug, and M represents the number of wave-to-wave conversion plugs. In addition, the wave-to-wave conversion plug also needs to meet a certain port standing wave ratio (eg, ≤1.2:1).

Further preferably, in this embodiment, when calculating the first signal attenuation, the following step-by-step calculation method can be adopted: separately calculate the signal attenuation of the first metal waveguide, the signal attenuation of the first flexible waveguide, and the signal attenuation of the wave-to-conversion plug. Signal attenuation: the calculated sum of the signal attenuation of the first metal waveguide, the signal attenuation of the first flexible waveguide, and the signal attenuation of the wave-to-conversion plug is used as the first signal attenuation.

In a preferred embodiment of the present invention, in order to pursue electrical performance, the metal waveguide is generally an aluminum cavity structure, which has poor rigidity and is prone to instability in the extreme vibration and noise environment of the aircraft. In order to solve this problem, the present invention also A support bracket for supporting the metal waveguide is designed. Preferably, the method for designing a structural-electrical-integrated waveguide network may also include:

Step 107: Select a plurality of supporting brackets according to the installation position of the first metal waveguide and the structural size of the first metal waveguide.

Step 108 , installing the fixed ends of the plurality of support brackets in the aircraft instrument compartment according to a set interval.

In this embodiment, the supporting ends of the plurality of supporting brackets are connected to the first metal waveguide for supporting the first metal waveguide. Wherein, the set interval can be but not limited to: 200mm; the length of the support end of the support bracket can be but not limited to 50mm, the wall thickness can be but not limited to 2mm; the cross section of the support bracket can be but not limited to triangular.

In combination with the foregoing embodiments, this embodiment is described in detail by taking an actual application scenario as an example.

Step S1, installing a Ka frequency band device and a Ka antenna.

Referring to FIG. 2 , it shows a schematic diagram of installation of a Ka frequency band device and a Ka antenna in an embodiment of the present invention. In this embodiment, the installation position of the Ka-band equipment and the Ka-antenna on the equipment mounting bracket can be determined according to the available installation space in the instrument compartment of the aircraft. Because the equipment and the antenna are connected with a waveguide, the Ka-band equipment must be guaranteed during installation. The distance to the Ka antenna is similar (nearly installed), and the laying length of the waveguide under such a layout is relatively short.

Step S2, determining the structural form of the metal waveguide.

As shown in Figure 2, after the Ka-band equipment and Ka antenna are installed, the waveguide installation space between the Ka-band equipment and the Ka antenna can be determined, and then the structural form of the metal waveguide can be determined. As shown in Figure 2, the installation space of the waveguide is narrow and long. Considering the interface between the metal waveguide and the Ka device, you can choose T-shaped, L-shaped, or U-shaped metal waveguides that are suitable for the narrow and long space. Preferably, during type selection, the signal attenuation, stiffness, and quality of each waveguide form can be comprehensively compared to finally determine the optimal structural form of the metal waveguide. In this embodiment, the T-shape is finally selected as the optimal structural form of the metal waveguide through comparison.

It should be noted that while designing the waveguide network, it is necessary to ensure the electrical performance of the waveguide network and realize the integrated design of the electrical structure. In the entire Ka link composed of Ka band equipment-waveguide-Ka antenna, the signal attenuation of the entire Ka link needs to be less than or equal to a preset total attenuation threshold. For example, it can be determined according to engineering experience: the signal attenuation β of the entire Ka link is ≤ 8db.

As mentioned above, in this embodiment, a T-shaped metal waveguide is selected, and the structural size of the T-shaped metal waveguide meets the waveguide installation space shown in Figure 2. At the same time, according to the calculation formula _of the aforementioned signal attenuation β1, it can be The signal attenuation β ₁ ' of the current T-shaped metal waveguide is calculated to be 3.5db.

Step S3, determining the flexible waveguide.

In this embodiment, based on the installation space of the waveguide and the structural form of the metal waveguide determined in the foregoing steps S1 and S2, a corresponding matching flexible waveguide can be selected. In step S2, the T-shaped metal waveguide is only used as the main structure of the waveguide network, and the connection between the equipment and the antenna is not realized. On this basis, if the metal waveguide is continued to be used, not only the turning radius is too small, but also the installation is difficult. Based on the above factors, The flexible waveguide design is adopted, and the connection between the device and the antenna is realized by using the flexible waveguide.

Preferably, in combination with FIG. 2 and the above step S1-2, a flexible waveguide with a length of 640 mm and two plugs at both ends can be selected. Wherein, in order to ensure the performance of the flexible waveguide, the signal attenuation β ₂ '=0.3×2+3×0.64=2.52dB of the currently selected flexible waveguide can be calculated based on the aforementioned calculation formula of the signal attenuation β ₂ . Wherein, 0.3 is a preferred plug attenuation coefficient of the flexible waveguide determined based on engineering experience, and 3 is a preferred length attenuation coefficient of the flexible waveguide determined based on engineering experience, which is not limited in this embodiment.

Step S4, selecting a wave-to-wave conversion plug.

When the metal waveguide is laid, it is inevitable that the waveguide will turn. Since the metal waveguide is a metal cavity structure, the curved edge structure will increase the difficulty of the process. In this embodiment, any appropriate shape such as L-type or I-type The wave-to-wave conversion plug can effectively solve the above problems, and meanwhile, the wave-to-wave conversion plug also has the function of electrical signal conversion. Typically a single coaxial adapter is used for a single link. Preferably, the signal attenuation of the coaxial conversion plug can be 0.3db/piece, that is, in this embodiment, the signal attenuation of the coaxial conversion plug β ₃ ′=0.3×1=0.3.

Step S5, whether the waveguide network meets the electrical performance requirements.

In this embodiment, based on the foregoing steps, a waveguide network composed of a metal waveguide-a waveguide conversion plug-a flexible waveguide can be determined. Furthermore, the actual signal attenuation of the entire Ka link can be determined based on the determined waveguide network: β _SJ =β ₁ '+β ₂ '+β ₃ '=3.5+2.52+0.3=6.32db<8dB, so the final determined waveguide The network meets the usage requirements of the Ka link, that is, the finalized waveguide network meets the electrical performance requirements.

Step S6, setting the support bracket.

As mentioned above, in order to pursue electrical performance, the metal waveguide is an aluminum cavity structure, which has poor rigidity and is prone to instability in the extreme vibration and noise environment of the aircraft. In this embodiment, after the laying of the waveguide network is completed, a support bracket can be set at every 200 mm of the metal waveguide to support the metal waveguide, which effectively improves the rigidity of the long cavity structure of the metal waveguide, thereby completing The integrated design of the electrical structure of the waveguide network.

To sum up, in the method for designing a structural and electrical integrated waveguide network according to the embodiment of the present invention, according to the relative position between the Ka-band equipment and the Ka antenna, the waveguide network design of the metal waveguide-flexible waveguide is carried out respectively, and the rational layout of the waveguide At the same time as the network, the signal attenuation calculation of the communication link is performed to ensure that the electrical performance of the waveguide network meets the index requirements, and the structure-electrical integration design of the waveguide network is realized. At the same time, the optimization of the laying path of the waveguide network is realized, the waveguide space is compressed, the link attenuation is reduced, and the electrical performance is improved.

Secondly, the design method for structural and electrical integrated waveguide networks described in the embodiments of the present invention can use flexible waveguides instead of metal waveguides on the premise of ensuring reliable links. The combination of flexible waveguides and metal waveguides increases the reliability of waveguide networks. design.

Thirdly, the design method of the waveguide network with structural electrical integration described in the embodiment of the present invention comprehensively considers the structural parameters such as the bending radius and cavity length of the metal waveguide, and adopts the design scheme of wave-to-conversion, which improves the manufacturability. The collaborative design of the waveguide network mechanical interface between the Ka-band equipment and the metal waveguide reduces the installation difficulty of the metal waveguide. In addition, the design of the support bracket improves the overall rigidity of the metal waveguide and improves the connection reliability of the metal waveguide.

On the basis of the above method embodiments, the present invention also discloses a waveguide network structure with structural electrical integration. Referring to FIG. 3 , it shows a schematic structural view of a structurally electrical integrated waveguide network structure in an embodiment of the present invention. FIG. 4 is a schematic structural diagram of the metal waveguide shown in FIG. 3 . 3 and 4, in this embodiment, the electrical integrated waveguide network structure includes: Ka-band equipment 100, Ka antenna 200, metal waveguide 300, flexible waveguide 400, wave-to-wave conversion plug 500 and multiple supports A bracket (support bracket 600 as shown in FIG. 3).

In this embodiment, the Ka-band equipment and the Ka-antenna are installed on the mounting bracket 700 in the instrument compartment of the aircraft according to a set distance interval; the metal waveguide is connected to the Ka-band equipment; The head end of the waveguide is connected; the end of the flexible waveguide is connected with the Ka antenna; the fixed ends of the multiple support brackets are installed in the aircraft instrument cabin according to the set interval; the multiple support brackets are used to support the metal waveguide.

As for the device embodiment, since it corresponds to the method embodiment, the description is relatively simple, and for relevant parts, please refer to the description of the method embodiment.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description is only the best specific implementation mode of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of changes or modifications within the technical scope disclosed in the present invention. Replacement should be covered within the protection scope of the present invention.

The content that is not described in detail in the specification of the present invention belongs to the well-known technology of those skilled in the art.

Claims (10)

1. A structural electrical integration waveguide network design method is characterized in that, comprising: Selecting a first metal waveguide that matches the first relative position according to the first relative position between the installed and fixed Ka frequency band device and the installed and fixed Ka antenna; determining and installing the installation location of the first metal waveguide according to the installation location of the Ka-band device; selecting a first flexible waveguide that matches the second relative position according to a second relative position between the installed first metal waveguide and the Ka antenna; According to the selected first metal waveguide and the first flexible waveguide, through structural digital modeling and plugging between simulated devices, a plurality of candidate waveguide networks are obtained; The first signal attenuation of the communication links corresponding to the plurality of candidate waveguide networks are respectively calculated, and one or more candidate waveguide networks whose first signal attenuation is less than or equal to the total attenuation threshold are used as the designed waveguide network. 2. The structural electrical integration waveguide network design method according to claim 1, is characterized in that, also comprises: According to the available installation space in the instrument compartment of the aircraft, the Ka frequency band equipment and the Ka antenna are installed and fixed on the mounting bracket in the instrument compartment of the aircraft according to the set distance interval; wherein, the set distance interval is: 200mm～300mm . 3. The structural electrical integration waveguide network design method according to claim 1, characterized in that, according to the first relative position between the fixed Ka frequency band equipment and the fixed Ka antenna installed, select the The first metal waveguide matching the first relative position includes: According to the first relative position between the installed and fixed Ka frequency band equipment and the installed and fixed Ka antenna, the available space between the Ka frequency band equipment Ka antennas is determined; From the first sample set, p candidate metal waveguides satisfying the available space are screened; wherein, p≥1; the first sample set includes: various shapes, sizes, and sizes suitable for any size of space Different alternative metal waveguides; Calculate the signal attenuation corresponding to the p candidate metal waveguides respectively, to obtain the second signal attenuation corresponding to each candidate metal waveguide; A metal waveguide candidate whose second signal attenuation is less than or equal to a first sub-attenuation threshold is determined as the first metal waveguide; wherein the first sub-attenuation threshold is smaller than the total attenuation threshold. 4. The method for designing a structural-electrical-integrated waveguide network according to claim 3, wherein the signal attenuation β ₁ corresponding to the alternative metal waveguide is calculated by the following formula: in, c represents the speed of light, λ represents the working wavelength of the candidate metal waveguide, μ represents the magnetic permeability of the candidate metal waveguide, σ represents the electrical conductivity of the candidate metal waveguide, a represents the rectangular width of the candidate metal waveguide, and b represents the alternative The size of the narrow side of the metal waveguide, m represents the number of changes of the maximum value of the rectangular waveguide field of the alternative metal waveguide on the wide side of the rectangle, n represents the change of the maximum value of the rectangular waveguide field of the alternative metal waveguide on the narrow side of the rectangle frequency; The shape of the optional metal waveguide includes at least one of the following shapes: T-shape, L-shape and U-shape. 5. The method for designing a structural-electrical-integrated waveguide network according to claim 1, wherein, according to the second relative position between the installed first metal waveguide and the Ka antenna, select the second relative position with the first metal waveguide. Two first flexible waveguides with matched relative positions, comprising: determining a distance between the first metal waveguide and the Ka antenna according to a second relative position between the installed first metal waveguide and the Ka antenna; From the second sample set, q candidate flexible waveguides satisfying the distance are screened; among them, q≥1; the second sample set includes: various diameters, turning radii, and straight-line lengths of joints suitable for any size of space Various alternative flexible waveguides; respectively calculating the signal attenuation corresponding to the q flexible waveguides to obtain the third signal attenuation corresponding to each flexible waveguide; A candidate flexible waveguide whose third signal attenuation is less than or equal to a second sub-attenuation threshold is determined as the first flexible waveguide; wherein the second sub-attenuation threshold is smaller than the total attenuation threshold. 6. The method for designing a structural-electrical-integrated waveguide network according to claim 5, wherein the signal attenuation β ₂ corresponding to the alternative flexible waveguide is calculated by the following formula: β ₂ =cN+dL Wherein, c and d represent the plug attenuation coefficient and the length attenuation coefficient of the alternative flexible waveguide respectively, N represents the number of plugs of the alternative flexible waveguide, and L represents the length of the alternative flexible waveguide. 7. The waveguide network design method for structural electrical integration according to claim 1, further comprising: According to a third relative position between the installed first metal waveguide and the first flexible waveguide, select a wave-to-wave conversion plug that matches the third relative position; Connecting the first metal waveguide to the first flexible waveguide by using the wave-to-coupling plug; Wherein, the shape of the wave-to-wave conversion plug includes at least one of the following shapes: L-type and I-type; the signal attenuation β ₃ of the wave-to-wave conversion plug: β ₃ =τM; where, τ represents the wave-to-wave conversion plug The attenuation coefficient, M represents the number of wave with the conversion plug. 8. The method for designing a waveguide network with structural and electrical integration according to claim 7, wherein the first signal attenuation of the communication links corresponding to the multiple candidate waveguide networks is calculated respectively, and the first signal attenuation One or more candidate waveguide networks less than or equal to the total attenuation threshold as the design waveguide network, including: respectively calculating the signal attenuation of the first metal waveguide, the signal attenuation of the first flexible waveguide and the signal attenuation of the wave-to-converter plug; The sum of the calculated signal attenuation of the first metal waveguide, the signal attenuation of the first flexible waveguide, and the signal attenuation of the wave-to-conversion plug is used as the first signal attenuation. 9. The waveguide network design method for structural electrical integration according to claim 1, further comprising: selecting a plurality of supporting brackets according to the installation position of the first metal waveguide and the structural size of the first metal waveguide; Install the fixed ends of the plurality of support brackets in the aircraft instrument compartment according to set intervals; wherein, the support ends of the plurality of support brackets are connected to the first metal waveguide for supporting the first metal waveguide ; Wherein, the set interval is: 200 mm; the length of the supporting end of the supporting bracket is 50 mm, and the wall thickness is 2 mm; the cross section of the supporting bracket is triangular. 10. A structural electrical integrated waveguide network structure, characterized in that it includes: Ka frequency band equipment, Ka antenna, metal waveguide, flexible waveguide, wave-to-wave conversion plug and multiple supporting brackets; The Ka frequency band equipment and the Ka antenna are installed on the mounting bracket in the aircraft instrument compartment according to the set distance interval; The metal waveguide is connected to the Ka-band equipment; The metal waveguide is connected to the head end of the flexible waveguide through a wave-to-coupling conversion plug; The end of the flexible waveguide is connected to the Ka antenna; The fixed ends of the plurality of support brackets are installed in the aircraft instrument compartment according to set intervals; the plurality of support brackets are used to support the metal waveguide.