Method and device for optimizing signal transmission line, medium and equipment

Abstract

The invention discloses a signal transmission line optimization method and device, a medium and equipment. The method comprises the following steps: simulating a hybrid model constructed by a preset electromagnetic model and a circuit model according to a preset position of a high-power microwave radiation source, a magnetic field frequency and a preset area of a signal transmission line, and outputting coupling voltage, current distribution and electromagnetic field intensity of the signal transmission line under high-power microwave irradiation; and then, adjusting the layout of the signal transmission line by using the simulation results, and adding a metal shielding layer on the whole cable length to optimize the anti-radiation performance of the signal transmission line. The problem that the signal transmission line cannot be accurately designed and arranged in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of optimization of signal transmission lines, and in particular to a method, device, medium and equipment for optimizing signal transmission lines. Background Art

[0002] With the widespread application of electronic equipment in various fields, the electromagnetic compatibility problem of signal transmission lines has become increasingly prominent. Especially in high-power microwave environments, signal transmission lines are susceptible to strong electromagnetic interference, which may cause signal distortion, equipment failure, and even system paralysis. In the prior art, the design and layout of signal transmission lines often do not fully consider the impact of high-power microwave radiation, resulting in insufficient radiation resistance.

[0003] Electromagnetic interference issues: High-power microwave radiation can induce strong voltages and currents in cables. These coupling effects may cause electromagnetic compatibility problems in signal transmission lines.

[0004] Limitations of existing designs: Traditional signal transmission line design methods usually do not take into account the impact of high-power microwave radiation, or lack accurate models and parameter adjustments during the simulation and design process, and cannot effectively predict and optimize the radiation resistance of cables.

[0005] Challenges of simulation technology: Although electromagnetic field simulation technology has the potential to predict and optimize the performance of signal transmission lines, existing simulation methods often lack accurate simulation of the location and frequency of high-power microwave radiation sources, as well as mesh optimization of key areas of signal transmission lines.

[0006] Insufficient grounding and shielding measures: In the existing technology, the application of grounding and shielding measures is often not systematic and scientific enough, and cannot effectively reduce the impact of high-power microwave radiation on signal transmission lines.

[0007] These problems make it impossible for the existing technology to accurately design and layout signal transmission lines. Summary of the invention

[0008] The present invention provides a method, device, medium and equipment for optimizing a signal transmission line, so as to solve the problem that the prior art cannot accurately design and layout the signal transmission line.

[0009] In a first aspect, the present application provides a method for optimizing a signal transmission line, comprising:

[0010] According to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the preset hybrid model is simulated so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation;

[0011] Wherein, the hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs;

[0012] According to the coupling voltage distribution, coupling current distribution and electromagnetic field strength, the layout of the signal transmission line is adjusted and a metal shielding layer is added over the entire length of the signal transmission line to optimize the signal transmission line.

[0013] This application sets the position and magnetic field frequency of the high-power microwave radiation source and performs hybrid model simulation on specific areas of the signal transmission line, which can analyze and output in detail the coupling voltage, current distribution and electromagnetic field strength of the signal transmission line under high-power microwave irradiation. This simulation analysis provides key data support, so that the cable layout can be adjusted according to the simulation results, and a metal shielding layer can be added to the entire cable length, thereby effectively optimizing the radiation resistance of the signal transmission line. This method not only improves the electromagnetic compatibility of the signal transmission line, but also ensures its stability and reliability in complex electromagnetic environments, solving the problem that the existing technology cannot accurately design and layout the signal transmission line.

[0014] As a preferred embodiment of the first aspect, the hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs, specifically:

[0015] Constructing a preset electromagnetic model of the signal transmission line according to the structure and material properties of the signal transmission line and the type of cable assigned to the signal transmission cable path;

[0016] According to the electromagnetic model, the preset excitation source and the preset load, the circuit model is configured;

[0017] The circuit model and the electromagnetic model are integrated to obtain a preset hybrid model.

[0018] In this preferred embodiment, the present application constructs a preset electromagnetic model according to the structure, material properties and cable path distribution of the signal transmission line, and combines the preset circuit model with the preset excitation source and load configuration, and then integrates the two to obtain a preset hybrid model. This process enables the simulation analysis to accurately simulate the electromagnetic behavior of the signal transmission line in the actual working environment. This hybrid model simulation method not only improves the accuracy of the signal transmission line design, but also optimizes its electromagnetic compatibility, ensuring the stability and reliability of the signal transmission line in a complex electromagnetic environment.

[0019] As a preferred embodiment of the first aspect, according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the preset hybrid model is simulated so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation, specifically:

[0020] According to the position of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the shape, density, size and boundary of the grid in the simulation software are adjusted;

[0021] So that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation according to the upper limit frequency of the frequency, the lower limit frequency of the frequency, the waveform of the high-power microwave radiation source, the position of the high-power microwave radiation source and the shape, density, size and boundary of the grid.

[0022] In this preferred embodiment, the application accurately sets the position of the high-power microwave radiation source, the magnetic field frequency, and the preset area of ​​the signal transmission line, and adjusts the grid parameters in the simulation software accordingly. The hybrid model simulation can accurately output the coupling voltage, current distribution, and electromagnetic field strength of the signal transmission line under high-power microwave irradiation. This method not only improves the accuracy of the simulation results, but also optimizes the design of the signal transmission line, ensuring its electromagnetic compatibility and anti-interference ability in a complex electromagnetic environment.

[0023] As a preferred embodiment of the first aspect, the simulating of the preset hybrid model according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line also includes:

[0024] The preset electromagnetic model and the circuit model are monitored according to a preset monitor to obtain changes in the electromagnetic model and the circuit model during the radiation of the high-power microwave radiation source.

[0025] In this preferred embodiment, the present application monitors the preset electromagnetic model and circuit model in real time by combining the preset monitor during the simulation process, and the present method can record in detail the changes of the electromagnetic model and circuit model during the radiation of the high-power microwave radiation source. This monitoring mechanism not only improves the accuracy of the simulation analysis, but also enables the designer to adjust the model parameters according to the real-time data, optimize the radiation resistance of the signal transmission line, and ensure its stability and reliability in a complex electromagnetic environment.

[0026] In a second aspect, the present application provides a signal transmission line optimization device. The signal transmission line optimization device comprises a simulation module and an optimization module;

[0027] The simulation module is used to simulate a preset hybrid model according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation;

[0028] Wherein, the hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs;

[0029] The optimization module is used to adjust the layout of the signal transmission line and add a metal shielding layer over the entire length of the signal transmission line according to the coupling voltage distribution, coupling current distribution and electromagnetic field strength, so as to optimize the signal transmission line.

[0030] This device uses three modules to divide the work and coordinate work to better optimize the signal transmission line. This application sets the position and magnetic field frequency of the high-power microwave radiation source and performs hybrid model simulation on specific areas of the signal transmission line. It can analyze and output in detail the coupling voltage, current distribution and electromagnetic field strength of the signal transmission line under high-power microwave irradiation. This simulation analysis provides key data support, so that the cable layout can be adjusted according to the simulation results, and a metal shielding layer can be added to the entire cable length, thereby effectively optimizing the radiation resistance of the signal transmission line. This method not only improves the electromagnetic compatibility of the signal transmission line, but also ensures its stability and reliability in complex electromagnetic environments, solving the problem that the existing technology cannot accurately design and layout the signal transmission line.

[0031] As a preferred embodiment of the second aspect, the hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs, specifically:

[0032] Constructing a preset electromagnetic model of the signal transmission line according to the structure and material properties of the signal transmission line and the type of cable assigned to the signal transmission cable path;

[0033] According to the electromagnetic model, the preset excitation source and the preset load, the circuit model is configured;

[0034] The circuit model and the electromagnetic model are integrated to obtain a preset hybrid model.

[0035] In this preferred embodiment, the present application constructs a preset electromagnetic model according to the structure, material properties and cable path distribution of the signal transmission line, and combines the preset circuit model with the preset excitation source and load configuration, and then integrates the two to obtain a preset hybrid model. This process enables the simulation analysis to accurately simulate the electromagnetic behavior of the signal transmission line in the actual working environment. This hybrid model simulation method not only improves the accuracy of the signal transmission line design, but also optimizes its electromagnetic compatibility, ensuring the stability and reliability of the signal transmission line in a complex electromagnetic environment.

[0036] As a preferred embodiment of the second aspect, according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the preset hybrid model is simulated so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation, specifically:

[0037] According to the position of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the shape, density, size and boundary of the grid in the simulation software are adjusted;

[0038] So that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation according to the upper limit frequency of the frequency, the lower limit frequency of the frequency, the waveform of the high-power microwave radiation source, the position of the high-power microwave radiation source and the shape, density, size and boundary of the grid.

[0039] In this preferred embodiment, the application accurately sets the position of the high-power microwave radiation source, the magnetic field frequency, and the preset area of ​​the signal transmission line, and adjusts the grid parameters in the simulation software accordingly. The hybrid model simulation can accurately output the coupling voltage, current distribution, and electromagnetic field strength of the signal transmission line under high-power microwave irradiation. This method not only improves the accuracy of the simulation results, but also optimizes the design of the signal transmission line, ensuring its electromagnetic compatibility and anti-interference ability in a complex electromagnetic environment.

[0040] As a preferred embodiment of the second aspect, the simulating of the preset hybrid model according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line also includes:

[0041] The preset electromagnetic model and the circuit model are monitored according to a preset monitor to obtain changes in the electromagnetic model and the circuit model during the radiation of the high-power microwave radiation source.

[0042] In this preferred embodiment, the present application monitors the preset electromagnetic model and circuit model in real time by combining the preset monitor during the simulation process, and the present method can record in detail the changes of the electromagnetic model and circuit model during the radiation of the high-power microwave radiation source. This monitoring mechanism not only improves the accuracy of the simulation analysis, but also enables the designer to adjust the model parameters according to the real-time data, optimize the radiation resistance of the signal transmission line, and ensure its stability and reliability in a complex electromagnetic environment.

[0043] In a third aspect, the present application provides a computer-readable storage medium, the computer-readable storage medium including a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute a signal transmission line optimization method as described above. Its beneficial effects are the same as those of the signal transmission line optimization method provided in the first aspect of the present application.

[0044] In a fourth aspect, the present application provides a terminal device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements any one of the signal transmission line optimization methods described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 : A schematic diagram of a flow chart of an embodiment of a method for optimizing a signal transmission line provided in the present application;

[0046] Figure 2 : A structural schematic diagram of an embodiment of signal transmission line design layout calculation provided by the present application;

[0047] Figure 3 : A structural schematic diagram of an embodiment of the technical route provided by this application;

[0048] Figure 4 : A schematic diagram of the structure of an embodiment of a plane wave arrangement provided in the present application;

[0049] Figure 5 : A structural diagram of an embodiment of the waveform setting provided in the present application;

[0050] Figure 6 : A structural diagram of an embodiment of a monitor arrangement provided by the present application;

[0051] Figure 7 : A structural schematic diagram of an embodiment of a grid local encryption setting provided by the present application;

[0052] Figure 8 : A structural schematic diagram of an embodiment of the shielded twisted pair grounding simulation result provided by the present application;

[0053] Fig. 9 : A structural schematic diagram of an embodiment of a signal transmission line optimization device provided in the present application. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Embodiment 1

[0056] Please refer to Figure 1 , which is a signal transmission line optimization method provided by an embodiment of the present invention.

[0057] In this embodiment, the process of optimizing the signal transmission line in this application is described in detail through steps S01-S02.

[0058] The signal transmission line layout in this application is similar Figure 2 As shown, it can include nodes (N1, N2...Nn) including multiple sections of various types of cables (P1, P2, P3...Pn), and any number of signal transmission lines can be designed, laid out and calculated according to the actual situation according to this method.

[0059] The technical route of the entire technical solution of this application is as follows Figure 3 As shown;

[0060] S01: simulating a preset hybrid model according to a preset position, field strength, frequency of a high-power microwave radiation source and a preset area of ​​a signal transmission line, so that the hybrid model simulates and outputs coupling voltage distribution, coupling current distribution and electromagnetic field strength of the signal transmission line under high-power microwave irradiation;

[0061] The hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs.

[0062] As a preferred embodiment of the first embodiment, the hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs, specifically:

[0063] Constructing a preset electromagnetic model of the signal transmission line according to the structure and material properties of the signal transmission line and the type of cable assigned to the signal transmission cable path;

[0064] More specifically, clarify the type of signal line (such as coaxial line, microstrip line, twisted pair, etc.), signal transmission characteristic requirements, interconnection method with other circuit elements, and signal line working environment. Based on the above information, the structure, size, and layout of the signal line can be planned. In modeling, first determine the unit system and coordinate system, clarify the model size and coordinate orientation, and establish each signal line port node. The node is the key point where the signal line connects with other circuit elements, and is also the location of signal input and output in simulation analysis. By defining the cross-linking between nodes, the cable path can be connected. At the same time, it is also necessary to ensure that the connection relationship between the signal lines between the nodes is correct to ensure smooth signal transmission.

[0065] Use the various shape tools and Boolean operations provided by CST to draw signal line structures. For complex signal line structures, such as cables with heterogeneous structures, branches or transition sections, it is necessary to combine multiple shape tools and editing functions to achieve modeling. For signal line material properties, you can select corresponding parameters such as conductivity and dielectric constant based on the built-in material library of CST software, or you can customize material properties.

[0066] After completing the signal line structure and material property settings, the next step is to assign a path to it, which can be done by assigning a cable type to the cable path. In CST, users can set port properties by defining the port type (such as waveguide port, coaxial port, etc.) and position to complete the signal line model construction work, and the signal line model is the electromagnetic model.

[0067] According to the electromagnetic model, the preset excitation source and the preset load, the circuit model is configured;

[0068] More specifically, according to the ports defined in the cable modeling, the above signal line ports are referenced in the circuit studio, and the corresponding excitation source and load are set according to the actual product RF circuit structure. The load can be a simple resistor or a complex RF circuit structure port (including chips, semiconductor devices). The load circuit is built according to the needs, and the chip can be introduced into the circuit structure using models such as SPICE or IBIS. The excitation source can be a voltage source, a current source, or other forms, depending on the simulation requirements. The setting of the excitation source should match the signal source in the actual circuit to ensure the accuracy of the simulation results. Then the field-circuit coordination setting is performed to ensure that the three-dimensional structure and the circuit structure are connected for calculation. The last sentence of the circuit transient solution task completes the setting of the radiation source signal, field strength, time, etc., and completes the setting of the entire circuit model.

[0069] The circuit model and the electromagnetic model are integrated to obtain a preset hybrid model.

[0070] In this preferred embodiment, the present application constructs a preset electromagnetic model according to the structure, material properties and cable path distribution of the signal transmission line, and combines the preset circuit model with the preset excitation source and load configuration, and then integrates the two to obtain a preset hybrid model. This process enables the simulation analysis to accurately simulate the electromagnetic behavior of the signal transmission line in the actual working environment. This hybrid model simulation method not only improves the accuracy of the signal transmission line design, but also optimizes its electromagnetic compatibility, ensuring the stability and reliability of the signal transmission line in a complex electromagnetic environment.

[0071] As a preferred embodiment of the first embodiment, the preset hybrid model is simulated according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation, specifically:

[0072] The high-power microwave radiation source adopts a plane wave excitation source, based on Figure 4 Set the plane wave field strength and direction according to Figure 5 The waveform of high-power microwave is set. In the background and boundary settings, open boundary conditions are used and the radiation excitation source is set 100-1000mm from the equipment surface. Figure 6 The electric field and magnetic field monitors are used to monitor the changes of the electromagnetic field during the entire radiation period. The entire frequency range of the solution is based on the center frequency f, the upper limit frequency fh = f*(1.05-1.5), and the lower limit frequency fl = f*(0.5-0.95).

[0073] The calculation accuracy and speed are inversely proportional to the number of sample grids. The more grids there are, the higher the calculation accuracy, the slower the calculation speed, and the longer the time required. Therefore, it is necessary to design the required grid length and optimize the grid quality in advance: Taking the finite algorithm as an example, if the maximum calculation electromagnetic frequency during the calculation process is f max , according to the formula Calculate the wavelength of the electromagnetic wave and set the grid length (L mesh ),Require In order to achieve the highest accuracy and best calculation results. For high-frequency calculations, a uniform grid is used, especially at the port, a denser grid is needed to improve the calculation accuracy, resulting in a huge number of grids and a long computer calculation time. Therefore, a local grid encryption method is used, such as Figure 7 The overall number of grids is controlled at a low level. Based on the length*width*height of the area where the cable is located, the grids are further encrypted in three directions (X, Y, Z). This reduces the number of grids in non-critical areas, encrypts grids in critical areas, reduces the amount of calculation, and ensures high-precision calculation results and speed.

[0074] In this preferred embodiment, the application accurately sets the position of the high-power microwave radiation source, the magnetic field frequency, and the preset area of ​​the signal transmission line, and adjusts the grid parameters in the simulation software accordingly. The hybrid model simulation can accurately output the coupling voltage, current distribution, and electromagnetic field strength of the signal transmission line under high-power microwave irradiation. This method not only improves the accuracy of the simulation results, but also optimizes the design of the signal transmission line, ensuring its electromagnetic compatibility and anti-interference ability in a complex electromagnetic environment.

[0075] S02: According to the coupling voltage distribution, coupling current distribution and electromagnetic field strength, the layout of the signal transmission line is adjusted and a metal shielding layer is added over the entire length of the signal transmission line to optimize the signal transmission line.

[0076] As a preferred embodiment of the first embodiment, the layout of the signal transmission line is adjusted according to the coupling voltage distribution, the coupling current distribution and the electromagnetic field strength, and a metal shielding layer is added over the entire length of the signal transmission line to optimize the signal transmission line, specifically:

[0077] According to the simulation calculation results, improvement measures can be implemented for cables, such as adjusting the cable layout: optimizing the cable path, keeping a safe distance between cables susceptible to interference and noise source lines; adding shielding measures: adding a metal shielding layer (such as copper foil, aluminum foil or braided mesh), and considering using a double or multi-layer shielding structure for sensitive cables. Connectors or holes to ensure the continuity and integrity of the shielding layer.

[0078] use Figures 4 to 7 The simulation configuration is used to simulate the shielded twisted pair cable with a sine wave radiation source with a frequency of 4GHz and an amplitude of 4000V / m to explore the influence of the grounding of the shielded twisted pair cable on the coupling induction field voltage in the cable. Figure 8 It can be concluded that grounding has a significant impact on the coupling voltage within the cable. The present invention can provide guidance for related work such as the design and layout of cables to resist high-power microwaves.

[0079] This application sets the position and magnetic field frequency of the high-power microwave radiation source and performs hybrid model simulation on specific areas of the signal transmission line, which can analyze and output in detail the coupling voltage, current distribution and electromagnetic field strength of the signal transmission line under high-power microwave irradiation. This simulation analysis provides key data support, so that the cable layout can be adjusted according to the simulation results, and a metal shielding layer can be added to the entire cable length, thereby effectively optimizing the radiation resistance of the signal transmission line. This method not only improves the electromagnetic compatibility of the signal transmission line, but also ensures its stability and reliability in complex electromagnetic environments, solving the problem that the existing technology cannot accurately design and layout the signal transmission line.

[0080] Embodiment 2

[0081] Please refer to Fig. 9 , which is an optimization device for a signal transmission line provided in an embodiment of the present application.

[0082] In this embodiment, the signal transmission line optimization device includes a simulation module 10 and an optimization module 20 .

[0083] The signal transmission line layout in this application is similar Figure 2 As shown, it can include nodes (N1, N2...Nn) including multiple sections of various types of cables (P1, P2, P3...Pn), and any number of signal transmission lines can be designed, laid out and calculated according to the actual situation according to this method.

[0084] The technical route of the entire technical solution of this application is as follows Figure 3 As shown;

[0085] The simulation module 10 is used to simulate a preset hybrid model according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation;

[0086] The hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs.

[0087] As a preferred embodiment of the second embodiment, the hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs, specifically:

[0088] Constructing a preset electromagnetic model of the signal transmission line according to the structure and material properties of the signal transmission line and the type of cable assigned to the signal transmission cable path;

[0089] More specifically, clarify the type of signal line (such as coaxial line, microstrip line, twisted pair, etc.), signal transmission characteristic requirements, interconnection method with other circuit elements, and signal line working environment. Based on the above information, the structure, size, and layout of the signal line can be planned. In modeling, first determine the unit system and coordinate system, clarify the model size and coordinate orientation, and establish each signal line port node. The node is the key point where the signal line connects with other circuit elements, and is also the location of signal input and output in simulation analysis. By defining the cross-linking between nodes, the cable path can be connected. At the same time, it is also necessary to ensure that the connection relationship between the signal lines between the nodes is correct to ensure smooth signal transmission.

[0090] Use the various shape tools and Boolean operations provided by CST to draw signal line structures. For complex signal line structures, such as cables with heterogeneous structures, branches or transition sections, it is necessary to combine multiple shape tools and editing functions to achieve modeling. For signal line material properties, you can select corresponding parameters such as conductivity and dielectric constant based on the built-in material library of CST software, or you can customize material properties.

[0091] After completing the signal line structure and material property settings, the next step is to assign a path to it, which can be done by assigning a cable type to the cable path. In CST, users can set port properties by defining the port type (such as waveguide port, coaxial port, etc.) and position to complete the signal line model construction work, and the signal line model is the electromagnetic model.

[0092] According to the electromagnetic model, the preset excitation source and the preset load, the circuit model is configured;

[0093] More specifically, according to the ports defined in the cable modeling, the above signal line ports are referenced in the circuit studio, and the corresponding excitation source and load are set according to the actual product RF circuit structure. The load can be a simple resistor or a complex RF circuit structure port (including chips, semiconductor devices). The load circuit is built according to the needs, and the chip can be introduced into the circuit structure using models such as SPICE or IBIS. The excitation source can be a voltage source, a current source, or other forms, depending on the simulation requirements. The setting of the excitation source should match the signal source in the actual circuit to ensure the accuracy of the simulation results. Then the field-circuit coordination setting is performed to ensure that the three-dimensional structure and the circuit structure are connected for calculation. The last sentence of the circuit transient solution task completes the setting of the radiation source signal, field strength, time, etc., and completes the setting of the entire circuit model.

[0094] The circuit model and the electromagnetic model are integrated to obtain a preset hybrid model.

[0095] In this preferred embodiment, the present application constructs a preset electromagnetic model according to the structure, material properties and cable path distribution of the signal transmission line, and combines the preset circuit model with the preset excitation source and load configuration, and then integrates the two to obtain a preset hybrid model. This process enables the simulation analysis to accurately simulate the electromagnetic behavior of the signal transmission line in the actual working environment. This hybrid model simulation method not only improves the accuracy of the signal transmission line design, but also optimizes its electromagnetic compatibility, ensuring the stability and reliability of the signal transmission line in a complex electromagnetic environment.

[0096] As a preferred embodiment of the second embodiment, the preset hybrid model is simulated according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation, specifically:

[0097] The high-power microwave radiation source adopts a plane wave excitation source, based on Figure 4 Set the plane wave field strength and direction according to Figure 5 The waveform of high-power microwave is set. In the background and boundary settings, open boundary conditions are used and the radiation excitation source is set 100-1000mm from the equipment surface. Figure 6 The electric field and magnetic field monitors are used to monitor the changes of the electromagnetic field during the entire radiation period. The entire frequency range of the solution is based on the center frequency f, the upper limit frequency fh = f*(1.05-1.5), and the lower limit frequency fl = f*(0.5-0.95).

[0098] The calculation accuracy and speed are inversely proportional to the number of sample grids. The more grids there are, the higher the calculation accuracy, the slower the calculation speed, and the longer the time required. Therefore, it is necessary to design the required grid length and optimize the grid quality in advance: Taking the finite algorithm as an example, if the maximum calculation electromagnetic frequency during the calculation process is f max , according to the formula Calculate the wavelength of the electromagnetic wave and set the grid length (L mesh ),Require In order to achieve the highest accuracy and best calculation results. For high-frequency calculations, a uniform grid is used, especially at the port, a denser grid is needed to improve the calculation accuracy, resulting in a huge number of grids and a long computer calculation time. Therefore, a local grid encryption method is used, such as Figure 7 The overall number of grids is controlled at a low level. Based on the length, width and height of the area where the cable is located, the grids are further encrypted in the three directions of XYZ. This reduces the number of grids in non-critical areas, encrypts the grids in critical areas, reduces the amount of calculation, and ensures high-precision calculation results and speed.

[0099] In this preferred embodiment, the application accurately sets the position of the high-power microwave radiation source, the magnetic field frequency, and the preset area of ​​the signal transmission line, and adjusts the grid parameters in the simulation software accordingly. The hybrid model simulation can accurately output the coupling voltage, current distribution, and electromagnetic field strength of the signal transmission line under high-power microwave irradiation. This method not only improves the accuracy of the simulation results, but also optimizes the design of the signal transmission line, ensuring its electromagnetic compatibility and anti-interference ability in a complex electromagnetic environment.

[0100] The optimization module 20 is used to adjust the layout of the signal transmission line and add a metal shielding layer over the entire length of the signal transmission line according to the coupling voltage distribution, coupling current distribution and electromagnetic field strength, so as to optimize the signal transmission line.

[0101] As a preferred embodiment of the second embodiment, the layout of the signal transmission line is adjusted according to the coupling voltage distribution, the coupling current distribution and the electromagnetic field strength, and a metal shielding layer is added over the entire length of the signal transmission line to optimize the signal transmission line, specifically:

[0102] According to the simulation calculation results, improvement measures can be implemented for cables, such as adjusting the cable layout: optimizing the cable path, keeping a safe distance between cables susceptible to interference and noise source lines; adding shielding measures: adding a metal shielding layer (such as copper foil, aluminum foil or braided mesh), and considering using a double or multi-layer shielding structure for sensitive cables. Connectors or holes to ensure the continuity and integrity of the shielding layer.

[0103] use Figures 4 to 7 The simulation configuration is used to simulate the shielded twisted pair cable with a sine wave radiation source with a frequency of 4GHz and an amplitude of 4000V / m to explore the influence of the grounding of the shielded twisted pair cable on the coupling induction field voltage in the cable. Figure 8 It can be concluded that grounding has a significant impact on the coupling voltage within the cable. The present invention can provide guidance for related work such as the design and layout of cables to resist high-power microwaves.

[0104] This device uses three modules to divide the work and coordinate work to better optimize the signal transmission line. This application sets the position and magnetic field frequency of the high-power microwave radiation source and performs hybrid model simulation on specific areas of the signal transmission line. It can analyze and output in detail the coupling voltage, current distribution and electromagnetic field strength of the signal transmission line under high-power microwave irradiation. This simulation analysis provides key data support, so that the cable layout can be adjusted according to the simulation results, and a metal shielding layer can be added to the entire cable length, thereby effectively optimizing the radiation resistance of the signal transmission line. This method not only improves the electromagnetic compatibility of the signal transmission line, but also ensures its stability and reliability in complex electromagnetic environments, solving the problem that the existing technology cannot accurately design and layout the signal transmission line.

[0105] Embodiment three:

[0106] An embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for optimizing a signal transmission line;

[0107] Wherein, the optimization method of a signal transmission line, if implemented in the form of a software functional unit and used as an independent product, can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0108] Embodiment 4

[0109] The present application provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, any one of the signal transmission line optimization methods described in Embodiment 1 is implemented.

[0110] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for optimizing a signal transmission line, characterized in that: include: According to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the preset hybrid model is simulated so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation; Wherein, the hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs; According to the coupling voltage distribution, coupling current distribution and electromagnetic field strength, the layout of the signal transmission line is adjusted and a metal shielding layer is added over the entire length of the signal transmission line to optimize the signal transmission line.

2. The signal transmission line optimization method according to claim 1, characterized in that: The hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs, specifically: Constructing a preset electromagnetic model of the signal transmission line according to the structure and material properties of the signal transmission line and the type of cable assigned to the signal transmission cable path; According to the electromagnetic model, the preset excitation source and the preset load, the circuit model is configured; The circuit model and the electromagnetic model are integrated to obtain a preset hybrid model.

3. The signal transmission line optimization method according to claim 1, characterized in that: According to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the preset hybrid model is simulated so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation, specifically: According to the position of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the shape, density, size and boundary of the grid in the simulation software are adjusted; So that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation according to the upper limit frequency of the frequency, the lower limit frequency of the frequency, the waveform of the high-power microwave radiation source, the position of the high-power microwave radiation source and the shape, density, size and boundary of the grid.

4. The signal transmission line optimization method according to claim 1, characterized in that: The method of simulating a preset hybrid model according to the preset position, field intensity, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line also includes: The preset electromagnetic model and the circuit model are monitored according to a preset monitor to obtain changes in the electromagnetic model and the circuit model during the radiation of the high-power microwave radiation source.

5. A signal transmission line optimization device, characterized in that: Includes simulation module and optimization module; The simulation module is used to simulate a preset hybrid model according to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation; Wherein, the hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs; The optimization module is used to adjust the layout of the signal transmission line and add a metal shielding layer over the entire length of the signal transmission line according to the coupling voltage distribution, coupling current distribution and electromagnetic field strength, so as to optimize the signal transmission line.

6. The signal transmission line optimization device according to claim 5, characterized in that: The hybrid model is constructed based on a preset electromagnetic model and a circuit model to which the electromagnetic model belongs, specifically: Constructing a preset electromagnetic model of the signal transmission line according to the structure and material properties of the signal transmission line and the type of cable assigned to the signal transmission cable path; According to the electromagnetic model, the preset excitation source and the preset load, the circuit model is configured; The circuit model and the electromagnetic model are integrated to obtain a preset hybrid model.

7. The signal transmission line optimization device according to claim 5, characterized in that: According to the preset position, field strength, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the preset hybrid model is simulated so that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation, specifically: According to the position of the high-power microwave radiation source and the preset area of ​​the signal transmission line, the shape, density, size and boundary of the grid in the simulation software are adjusted; So that the hybrid model simulates the coupling voltage distribution, coupling current distribution and electromagnetic field strength of the output signal transmission line under high-power microwave irradiation according to the upper limit frequency of the frequency, the lower limit frequency of the frequency, the waveform of the high-power microwave radiation source, the position of the high-power microwave radiation source and the shape, density, size and boundary of the grid.

8. The signal transmission line optimization device according to claim 5, characterized in that: The method of simulating a preset hybrid model according to the preset position, field intensity, frequency of the high-power microwave radiation source and the preset area of ​​the signal transmission line also includes: The preset electromagnetic model and the circuit model are monitored according to a preset monitor to obtain changes in the electromagnetic model and the circuit model during the radiation of the high-power microwave radiation source.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the signal transmission line optimization method according to any one of claims 1 to 4.

10. A terminal device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements the signal transmission line optimization method according to any one of claims 1 to 4 when executing the computer program.

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