A satellite cable VHF frequency band interference signal filtering and suppression structure and satellite

Abstract

The present application provides a satellite through-the-bay cable VHF band interference signal filtering and suppression structure and a satellite. The satellite through-the-bay cable VHF band interference signal filtering and suppression structure includes a symmetrically arranged first filter and a second filter, and the filter is further configured with a symmetrically arranged filtering structure. Taking the first filter as an example, it includes a first filtering unit, a first high-pass resonance unit, a second high-pass resonance unit and a second filtering unit in sequence along the wired signal transmission direction. The first filtering unit includes a first low-pass resonance unit and a third high-pass resonance unit in sequence along the wired signal transmission direction. The second filtering unit includes a fourth high-pass resonance unit and a second low-pass resonance unit in sequence along the wired signal transmission direction. The first filtering unit and the second filtering unit are symmetrically arranged. Under this structural setting, the filtering effect of the VHF band interference signal is effectively improved from the symmetrical setting of the filter to the symmetrical setting of the filtering structure in the filter.

Description

Technical Field

[0001] The present application relates to the field of satellites, and in particular to a VHF frequency band interference signal filtering and suppression structure for satellite through-bay cables and a satellite. Background Art

[0002] With the increasing demand for maritime communications, the load of the existing Automatic Identification System (AIS) system link has continued to increase, and it can no longer meet the needs of safe navigation of ships at sea. A new generation of maritime communication systems is urgently needed.

[0003] As an upgraded version of the AIS system, the VHF Data Exchange System (VDES) further improves the speed and communication methods of maritime communications. However, because the VDES system operates in the VHF band of approximately 160 MHz, electromagnetic interference signals generated within the satellite in this band can be radiated outside the satellite through the solar array cable, degrading the satellite VDES system's receiving sensitivity and disrupting link communications. Therefore, effectively suppressing the VHF interference signals radiated from the solar array cable has become particularly important.

[0004] During the research process of existing related technologies, the inventors found that in the existing technology, the filtering scheme for interference signals generally only uses electromagnetic interference (EMI) filters to filter the single-machine power supply within the satellite, which has great limitations and low applicability. This type of design generally suppresses interference signals with frequencies below 30MHz, but cannot effectively suppress VHF band interference signals. Furthermore, this type of design cannot suppress VHF band interference signals coupled from other places within the satellite to the solar array cable, which ultimately leads to the presence of large VHF band interference signals on the solar array cable. These interference signals are radiated and leaked outside the satellite through the solar array cable, thereby interfering with the satellite VDES system communication. Summary of the Invention

[0005] The present application provides a satellite through-the-bay cable VHF band interference signal filtering and suppression structure and a satellite, which are used to solve the problem in the prior art that the satellite solar array through-the-bay cable VHF band interference signal cannot be effectively filtered and suppressed.

[0006] In a first aspect, the present application provides a VHF band interference signal filtering and suppression structure for a satellite-penetrating cable, characterized in that the VHF band interference signal filtering and suppression structure for a satellite-penetrating cable includes a first filter provided on the target interference source side and a second filter provided on the penetration port side, wherein a wired signal transmission line of a cable is respectively configured between the target interference source and the first and second filters and the solar panel;

[0007] The filter structure of the first filter includes, in sequence along the wired signal transmission direction, a first filter unit, a first high-pass resonant unit, a second high-pass resonant unit, and a second filter unit. The first filter unit includes, in sequence along the wired signal transmission direction, a first low-pass resonant unit and a third high-pass resonant unit. The second filter unit includes, in sequence along the wired signal transmission direction, a fourth high-pass resonant unit and a second low-pass resonant unit. The first filter unit and the second filter unit are symmetrically arranged.

[0008] The filter structure of the second filter includes, in sequence along the wired signal transmission direction, a third filter unit, a fifth high-pass resonant unit, a sixth high-pass resonant unit, and a fourth filter unit. The third filter unit includes, in sequence along the wired signal transmission direction, a third low-pass resonant unit and a seventh high-pass resonant unit. The second filter unit includes, in sequence along the wired signal transmission direction, an eighth high-pass resonant unit and a fourth low-pass resonant unit. The third filter unit is symmetrically arranged with the fourth filter unit.

[0009] The first filter and the second filter are arranged symmetrically.

[0010] In combination with the first aspect of the present application, in a first possible implementation of the first aspect of the present application, the resonant frequencies of the first filter and the second filter are both lower than the low-end frequency of the very high frequency data exchange system VDES on the satellite.

[0011] In combination with the first possible implementation of the first aspect of the present application, in the second possible implementation of the first aspect of the present application, in the first filter and the second filter, the equivalent inductance value of the low-pass resonant unit and the equivalent capacitance value of the high-pass resonant unit are determined by determining the selection range through the following formula and then determining the specific device:

[0012]

[0013] Where f is the low-end frequency of the VDES system, L is the equivalent inductance value, and C is the equivalent capacitance value.

[0014] In combination with the first aspect of the present application, in a third possible implementation of the first aspect of the present application, the first high-pass resonant unit, the second high-pass resonant unit, the third high-pass resonant unit, and the fourth high-pass resonant unit are further provided with a short-circuit protection unit on the other side away from the first low-pass resonant unit and the second low-pass resonant unit, and between the positive transmission line or the negative transmission line to be connected, to prevent a power supply short circuit when a high-pass resonant unit breaks down;

[0015] The fifth high-pass resonant unit, the sixth high-pass resonant unit, the seventh high-pass resonant unit and the eighth high-pass resonant unit are respectively provided with a short-circuit protection unit between the positive transmission line or the negative transmission line to be connected on the other side away from the third low-pass resonant unit and the fourth low-pass resonant unit, so as to avoid power supply short circuit when the high-pass resonant unit breaks down.

[0016] In combination with the first aspect of the present application, in a fourth possible implementation of the first aspect of the present application, the target interference source is a power supply on the satellite.

[0017] In combination with the first aspect of the present application, in a fifth possible implementation of the first aspect of the present application, the target interference source is a target working device on the satellite, and the target working device has characteristics equivalent to a power supply.

[0018] In combination with the first aspect of the present application, in a sixth possible implementation of the first aspect of the present application, the length of the wired signal transmission line between the first filter and the target interference source is configured to be a length of 1 / 4 wavelength of the interference signal.

[0019] In combination with the first aspect of the present application, in a seventh possible implementation of the first aspect of the present application, the output end of the second filter is installed close to the passage opening of the passage cable of the solar panel.

[0020] In combination with the first aspect of the present application, in an eighth possible implementation manner of the first aspect of the present application, the first filter and the second filter are filters with electromagnetic interference EMI filter structural characteristics.

[0021] In a second aspect, the present application provides a satellite, which is provided with a satellite through-the-bay cable VHF band interference signal filtering and suppression structure provided by the first aspect of the present application or any possible implementation method of the first aspect of the present application.

[0022] From the above content, it can be concluded that this application has the following beneficial effects:

[0023] In response to the signal interference caused by the VHF band interference signal of the satellite solar array through-the-bay cable, the present application configures a satellite through-the-bay cable VHF band interference signal filtering and suppression structure between the target interference source and the solar sail panel. The satellite through-the-bay cable VHF band interference signal filtering and suppression structure includes a symmetrically arranged first filter and a second filter, and the filter is further configured with a symmetrically arranged filtering structure. Taking the first filter as an example, it includes a first filtering unit, a first high-pass resonance unit, a second high-pass resonance unit and a second filtering unit in sequence along the wired signal transmission direction. The first filtering unit includes a first low-pass resonance unit and a third high-pass resonance unit in sequence along the wired signal transmission direction. The second filtering unit includes a fourth high-pass resonance unit and a second low-pass resonance unit in sequence along the wired signal transmission direction. The first filtering unit and the second filtering unit are symmetrically arranged. Under this structural setting, from the symmetrical setting of the filter to the symmetrical setting of the filtering structure in the filter, the filtering effect of the VHF band interference signal is effectively improved, thereby solving the problem in the prior art that the VHF band interference signal of the satellite solar array through-the-bay cable cannot be effectively filtered and suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of an application scenario of the VHF frequency band interference signal filtering and suppression structure of the satellite cable through the warehouse in this application;

[0026] Figure 2 This is a structural diagram of a filter in the VHF band interference signal filtering and suppression structure of the satellite cable through the warehouse in this application;

[0027] Figure 3 This is another structural diagram of the filter in the VHF band interference signal filtering and suppression structure of the satellite cable through the warehouse in this application. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0029] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules that are not clearly listed or that are inherent to these processes, methods, products or devices. The naming or numbering of steps in this application does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The process steps that have been named or numbered can be changed in the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0030] The division of modules in this application is a logical division. In actual application, there may be other division methods. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between modules can be electrical or other similar forms, which are not limited in this application. Moreover, the modules or submodules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed into multiple circuit modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this application.

[0031] First, see Figure 1 and Figure 2 , Figure 1 A schematic diagram showing an application scenario of the VHF band interference signal filtering and suppression structure of the satellite cable through the warehouse of the present application is shown. Figure 2 A structural schematic diagram of a filter in the VHF frequency band interference signal filtering and suppression structure of a satellite cable through a warehouse of the present application is shown.

[0032] from Figure 1 It can be seen that the power control unit on the satellite is illustrated as a target interference source, and the EMI filter is illustrated as a specific filter in the VHF frequency band interference signal filtering and suppression structure of the satellite cable through the warehouse of this application, that is, Figure 1 EMI filter 1 and EMI filter 2 in.

[0033] exist Figure 1Based on the content shown, it can be obtained that the satellite cable VHF band interference signal filtering and suppression structure provided by this application can be specifically included in the target interference source (such as Figure 1 The first filter (such as Figure 1 EMI filter 1 in the slot), the second filter on the slot side (such as Figure 1 EMI filter 2), the target interference source is provided with a wired signal transmission line with a cable from the first filter, the second filter to the solar panel.

[0034] It can be understood that the VHF band interference signal targeted by the filtering process of this application exists in the wired signal transmission line between the target interference source and the solar sail panel. Therefore, the satellite through-the-bay cable VHF band interference signal filtering and suppression structure provided by this application is configured on the wired signal transmission line between the two. Figure 1 As shown, it is specifically presented in the form of two filters.

[0035] Of course, in actual applications, when the VHF frequency band interference signal filtering and suppression structure of the satellite through-cabin cable of this application is applied to the wired signal transmission line between the target interference source and the solar panel, it may also involve the setting of some related structures such as reinforcement components, which will not be described in detail here.

[0036] And from Figure 2 It can be obtained from the filter structure shown in the figure. In this application, taking the first filter as an example, the filter structure of the first filter can include the first filtering unit (such as Figure 2 C1 in), the first high-pass resonant unit (such as Figure 2 C2 in), the second high-pass resonant unit (such as Figure 2 C3 in) and the second filtering unit (such as Figure 2 C2 in the figure), the first filtering unit may include a first low-pass resonance unit (such as Figure 2 The filter unit L1 in the filter unit and the third high-pass resonance unit (such as Figure 2 C1 in the figure), the second filtering unit may include a fourth high-pass resonance unit (such as Figure 2 C4 in) and the second low-pass resonant unit (such as Figure 2 L2 in the figure), the first filtering unit and the second filtering unit are symmetrically arranged.

[0037] Among them, the low-pass resonant unit refers to a structural unit with low-pass characteristics in the circuit structure, and correspondingly, the high-pass resonant unit refers to a structural unit with high-pass characteristics in the circuit structure. In addition, it can be understood that the circuit components included in the low-pass resonant unit and the circuit structure composed of it can be equivalent to an inductor, thus having the corresponding low-pass characteristics; correspondingly, the circuit components included in the high-pass resonant unit and the circuit structure composed of it can be equivalent to a capacitor, thus having the corresponding high-pass characteristics.

[0038] It can be understood that in practical applications, the filter structure of the first filter, i.e. Figure 2 In the circuit topology structure obtained by the symmetrical combination of the filter unit and the high-pass resonant unit, the first filter unit and the second filter unit have a mutual backup setting. In addition, the first high-pass resonant unit to the fourth high-pass resonant unit also have a mutual backup setting. This not only strengthens and improves the filtering effect of VHF band interference signals, but also has a front-to-back balance effect during the filtering process, ensuring a smooth filtering effect. In addition, due to the mutual backup structure, if the components in individual locations malfunction or are damaged during actual application, it can also play a disaster recovery role, greatly ensuring that the filtering effect of the filter is not affected or not significantly affected.

[0039] Corresponding to the first filter, on the second filter side, the filter structure of the second filter includes a third filter unit, a fifth high-pass resonance unit, a sixth high-pass resonance unit and a fourth filter unit in sequence along the wired signal transmission direction, the third filter unit includes a third low-pass resonance unit and a seventh high-pass resonance unit in sequence along the wired signal transmission direction, the second filter unit includes an eighth high-pass resonance unit and a fourth low-pass resonance unit in sequence along the wired signal transmission direction, and the third filter unit and the fourth filter unit are symmetrically arranged.

[0040] The structural features of the second filter itself can be described with reference to the first filter, and will not be described in detail here.

[0041] At the same time, in addition to the symmetrical filter structure setting in the filter, from the overall perspective of the satellite cable VHF band interference signal filtering and suppression structure, the first filter and the second filter are also symmetrically set. Similar to the structural characteristics brought by the symmetrical filter structure setting in the filter, under the symmetrical setting of the two filters, it is also possible to further strengthen and improve the filtering effect of the VHF band interference signal in the VHF band interference signal filtering process, on the one hand, promote the front and back balance effect, ensure a smooth filtering effect, and on the other hand play a disaster recovery effect, thereby better solving the problem in the existing technology that the satellite solar array cable VHF band interference signal cannot be effectively filtered and suppressed.

[0042] Furthermore, for the satellite cable VHF band interference signal filtering and suppression structure provided in this application, the following practical implementation methods may also exist in specific applications.

[0043] As a practical implementation method, in order to further ensure the filtering effect of VHF band interference signals, in actual applications, it can be specifically set that: the resonant frequencies of the first filter and the second filter are both lower than the low-end frequency (the lowest value of the frequency range) of the VDES system on the satellite, thereby ensuring that the filtering range can cover the frequency range of the VDES system and achieve a full-range filtering effect of VHF band interference signals.

[0044] In addition, it can be found from the above content that the VHF band interference signal filtering and suppression structure of the satellite penetration cable of the present application, that is, the first filter and the second filter must achieve filtering of the VHF band interference signal, which is inseparable from the parameter setting of the circuit components in practical applications, so that accurate and effective data guidance can be provided when designing and assembling the VHF band interference signal filtering and suppression structure of the satellite penetration cable of the present application.

[0045] As for the selection of specific components in the first filter and the second filter, as another practical implementation method, it can be implemented according to the following content.

[0046] In the first filter and the second filter, the equivalent inductance value of the low-pass resonant unit and the equivalent capacitance value of the high-pass resonant unit are determined by determining the selection range and then determining the specific device using the following formula:

[0047]

[0048] Where f is the low-end frequency of the VDES system, L is the equivalent inductance value, and C is the equivalent capacitance value.

[0049] It can be understood that the equivalent inductance value of the low-pass resonant unit and the equivalent capacitance value of the high-pass resonant unit referred to here are viewed from the overall perspective of the VHF band interference signal filtering and suppression structure of the satellite penetration cable provided in this application, that is, the equivalent parameters of the VHF band interference signal filtering and suppression structure of the satellite penetration cable are parameters obtained by equivalent processing of multiple low-pass resonant units and multiple high-pass resonant units in the VHF band interference signal filtering and suppression structure of the satellite penetration cable.

[0050] For example, the present application can replace the low-pass resonant unit with a magnetic coil inductor L, and replace the high-pass resonant unit with an MLCC capacitor. Through the indirect condition that the stopband frequency is less than the low-end frequency of the VDES system, the range of equivalent inductance and equivalent capacitance values ​​of the resonant frequency less than the stopband frequency is calculated. Then, based on the obtained range of equivalent inductance and equivalent capacitance values, the target circuit device that can be finally selected is determined within the range of optional circuit devices (including inductors, capacitors, etc.), and the specific circuit structure of the specific devices in the first filter and the second filter is formed.

[0051] As an example, after the relevant circuit parameters are known: 1. passband frequency fp: 100MHz, 2. stopband frequency fs: 150MHz, 3. stopband attenuation α: 50dB, 4. interference signal frequency: 160MHz, 5. short-circuit fuse current 20A, the circuit components that meet the requirements are determined through the indirect condition that the stopband frequency 150MHz is less than the low-end frequency of the VDES system. The corresponding parameters are 0.2uH equivalent inductance value, 12pF equivalent capacitance value and the obtained resonant frequency of 102MHz.

[0052] In another practical implementation, reference Figure 3 Another structural schematic diagram of the filter in the VHF band interference signal filtering and suppression structure of the satellite cable through the warehouse of the present application is shown. Taking the first filter as an example, its first high-pass resonant unit, the second high-pass resonant unit, the third high-pass resonant unit and the fourth high-pass resonant unit are on the other side away from the first low-pass resonant unit and the second low-pass resonant unit, and are respectively provided with short-circuit protection units between the positive transmission line or the negative transmission line to be connected to avoid power supply short circuit when the high-pass resonant unit breaks down.

[0053] in, Figure 3 The short-circuit protection unit in the figure is shown as F. In actual application, it can be a short-circuit protection structure obtained by different short-circuit protection designs such as fuses.

[0054] The short-circuit protection unit installed here has overcurrent protection capability. When the rated current is exceeded, the protection unit can be fused and disconnected. In actual application, when there is a large current and voltage shock on the solar array cable, it may cause the high-pass resonant unit (such as Figure 3 If C1 to C4 in the circuit breaker are broken down, the short-circuit protection unit F can avoid power supply short circuit.

[0055] As an example, a fuse with a fusing current of 20A may be selected as the short-circuit protection unit here.

[0056] In addition, after the short-circuit protection unit is configured, it can be understood that when calculating the equivalent capacitance value and equivalent inductance value of the overall VHF frequency band interference signal filtering and suppression structure of the satellite cable through the warehouse in this application, the parameter influence brought by the short-circuit protection unit can also be considered.

[0057] Taking the fuse as an example of a short-circuit protection unit, in actual operation, this application extracts the corresponding fuse circuit model and forms the final filter circuit structure with other circuit structures. After simulation adjustment of the inductance and capacitance values ​​of the two filter units and the high-pass unit in the circuit, the attenuation outside the frequency of 150MHz (the frequency range of the low-end frequency of the VDES system higher than the 150MHZ stopband frequency fs) can be made greater than 50dB. In actual experiments, the simulation results are also consistent. It can be seen that while providing short-circuit protection function, VHF band interference signals can also be effectively filtered.

[0058] In addition, for Figure 2 as well as Figure 3 From the diagram, we can see that there are two lines arranged in the horizontal direction, which represents the circuit structure in the wired signal transmission line. In actual application, it is arranged in the form of one positive and one negative transmission line.

[0059] Correspondingly, in the second filter, the fifth high-pass resonant unit, the sixth high-pass resonant unit, the seventh high-pass resonant unit and the eighth high-pass resonant unit are also provided with short-circuit protection units on the other side away from the third low-pass resonant unit and the fourth low-pass resonant unit, and between the positive transmission line or the negative transmission line to be connected, so as to avoid power supply short circuit when the high-pass resonant unit breaks down.

[0060] Furthermore, as another practical implementation method, if Figure 1 The content of the description states that the target interference source targeted by this application can be directly selected as the power supply on the satellite, or the power control unit. It can be understood that in actual operation, the power supply is generally the most obvious satellite structural component that brings VHF band interference signals.

[0061] In another practical implementation method, the target interference source can also be the target working equipment screened out on the satellite. The target working equipment can be understood as having characteristics equivalent to a power supply. Therefore, it is possible and easy to bring VHF band interference signals like a power supply. Under this setting, the VHF band interference signals brought by the working equipment on the satellite other than the power supply that has the potential to bring VHF band interference signals can be effectively filtered.

[0062] Furthermore, in addition to the setting content of the above circuit components, the specific structural content of the VHF band interference signal filtering and suppression structure of the satellite cable through the warehouse in this application may also involve the selection of the installation location to ensure and enhance the filtering effect of the VHF band interference signal.

[0063] For example, on the target interference source side, the length of the wired signal transmission line between the first filter and the target interference source can be specifically configured to be the length of 1 / 4 wavelength of the interference signal (VHF band interference signal). Figure 1 Taking the content shown as an example, the input end of the EMI filter 1 and the power control unit are placed at a distance of 1 / 4 wavelength of the interference signal. It can be understood that according to the transmission line theory in radio frequency, the position of 1 / 4 wavelength of the interference signal can effectively filter out the interference signal.

[0064] As an example, in actual operation, the length of the wired signal transmission line between the first filter and the target interference source is 0.468 m, that is, 1 / 4 wavelength of the interference signal is 0.468 m.

[0065] For another example, on the solar panel side, the output end of the second filter can be specifically configured to be installed close to the passage opening of the solar panel's cable. The position can further attenuate the residual and coupled VHF band interference signals on the cable inside the warehouse, and ultimately the interference signals transmitted to the cable outside the warehouse are suppressed to an acceptable low level range.

[0066] In addition, as another practical implementation method, if Figure 1 The content shows that the first filter and the second filter are filters with electromagnetic interference EMI filter structural characteristics, that is, EMI filters. Of course, in actual applications, the specific type of filter on the satellite may also be adjusted according to actual needs and can conform to the filter structure in the above-mentioned filters.

[0067] Overall, in response to the signal interference caused by the VHF band interference signal of the satellite solar array through-the-bay cable, the present application configures a satellite through-the-bay cable VHF band interference signal filtering and suppression structure between the target interference source and the solar sail panel. The satellite through-the-bay cable VHF band interference signal filtering and suppression structure includes a symmetrically arranged first filter and a second filter, and the filter is further configured with a symmetrically arranged filtering structure. Taking the first filter as an example, it includes a first filtering unit, a first high-pass resonance unit, a second high-pass resonance unit and a second filtering unit in sequence along the wired signal transmission direction. The first filtering unit includes a first low-pass resonance unit and a third high-pass resonance unit in sequence along the wired signal transmission direction. The second filtering unit includes a fourth high-pass resonance unit and a second low-pass resonance unit in sequence along the wired signal transmission direction. The first filtering unit and the second filtering unit are symmetrically arranged. Under this structural setting, from the symmetrical setting of the filter to the symmetrical setting of the filtering structure in the filter, the filtering effect of the VHF band interference signal is effectively improved, thereby solving the problem in the prior art that the VHF band interference signal of the satellite solar array through-the-bay cable cannot be effectively filtered and suppressed.

[0068] In addition, those skilled in the art will appreciate that the VHF band interference signal filtering and suppression structure for satellite-penetrating cables provided in the above-mentioned embodiments is specifically for use on satellites, that is, the VHF band interference signal filtering and suppression structure for satellite-penetrating cables is an on-board structure.

[0069] To this end, the present application provides a satellite, which is equipped with a VHF band interference signal filtering and suppression structure of a satellite through-the-bay cable as provided in the present application, so as to utilize the good VHF band interference signal filtering effect brought by it to achieve a better working environment, thereby better completing the relevant work of the satellite.

[0070] The above is a detailed introduction to the satellite-penetrating cable VHF band interference signal filtering and suppression structure and the satellite provided by this application. Specific examples are used in this article to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand this application and its core ideas. At the same time, for technical personnel in this field, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on this application.

Claims

1. A satellite cable VHF band interference signal filtering and suppression structure, characterized in that: The satellite cable VHF band interference signal filtering and suppression structure includes a first filter provided on the target interference source side and a second filter provided on the cable outlet side. The target interference source is provided with a wired signal transmission line of a cable from the first filter, the second filter to the solar panel. The filter structure of the first filter includes, in sequence along the wired signal transmission direction, a first filter unit, a first high-pass resonant unit, a second high-pass resonant unit, and a second filter unit. The first filter unit includes, in sequence along the wired signal transmission direction, a first low-pass resonant unit and a third high-pass resonant unit. The second filter unit includes, in sequence along the wired signal transmission direction, a fourth high-pass resonant unit and a second low-pass resonant unit. The first filter unit and the second filter unit are symmetrically arranged. The first high-pass resonant unit, the second high-pass resonant unit, the third high-pass resonant unit, and the fourth high-pass resonant unit form a parallel structure. When there are two wired signal transmission lines, one line is connected in series with the first low-pass resonant unit and then connected to one end of the parallel structure. At the same time, the second low-pass resonant unit is continued to be connected in series with the other line. The two lines include a positive transmission line and a negative transmission line. The filter structure of the second filter includes, in sequence along the wired signal transmission direction, a third filter unit, a fifth high-pass resonance unit, a sixth high-pass resonance unit, and a fourth filter unit; the third filter unit includes, in sequence along the wired signal transmission direction, a third low-pass resonance unit and a seventh high-pass resonance unit; the second filter unit includes, in sequence along the wired signal transmission direction, an eighth high-pass resonance unit and a fourth low-pass resonance unit; the third filter unit is symmetrically arranged with the fourth filter unit; The first filter and the second filter are symmetrically arranged; The resonant frequencies of the first filter and the second filter are both lower than the low-end frequency of a very high frequency data exchange system (VDES) on a satellite; In the first filter and the second filter, the equivalent inductance value of the low-pass resonant unit and the equivalent capacitance value of the high-pass resonant unit are determined by determining the selection range and then determining the specific components using the following formula: Wherein, f is the low-end frequency of the VDES system, L is the equivalent inductance value, and C is the equivalent capacitance value.

2. The satellite cable VHF band interference signal filtering and suppression structure according to claim 1 is characterized in that: The first high-pass resonant unit, the second high-pass resonant unit, the third high-pass resonant unit, and the fourth high-pass resonant unit are further provided with a short-circuit protection unit on the other side away from the first low-pass resonant unit and the second low-pass resonant unit and between the other line to be connected, so as to avoid power supply short circuit when the high-pass resonant unit breaks down; The fifth high-pass resonant unit, the sixth high-pass resonant unit, the seventh high-pass resonant unit and the eighth high-pass resonant unit are respectively provided with the short-circuit protection unit on the other side away from the third low-pass resonant unit and the fourth low-pass resonant unit and between the other line to be connected to avoid power supply short circuit when the high-pass resonant unit breaks down.

3. The satellite cable VHF band interference signal filtering and suppression structure according to claim 1 is characterized in that: The target interference source is a power supply on the satellite.

4. The satellite cable VHF band interference signal filtering and suppression structure according to claim 1, characterized in that: The target interference source is a target working device on the satellite, and the target working device has a characteristic equivalent to a power supply.

5. The satellite cable VHF band interference signal filtering and suppression structure according to claim 1, characterized in that: The length of the wired signal transmission line between the first filter and the target interference source is configured to be 1 / 4 the wavelength of the interference signal.

6. The satellite cable VHF band interference signal filtering and suppression structure according to claim 1, characterized in that: The output end of the second filter is installed close to the passage opening of the solar panel cable.

7. The satellite cable VHF band interference signal filtering and suppression structure according to claim 1, characterized in that: The first filter and the second filter are filters with electromagnetic interference EMI filter structure characteristics.

8. A satellite, characterized in that: The satellite is provided with a VHF frequency band interference signal filtering and suppression structure for a satellite through-cabin cable as described in any one of claims 1 to 7.

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