Anti-interference filter for satellite antenna and satellite antenna

Abstract

The invention discloses an anti-interference filter for a satellite antenna and the satellite antenna, and belongs to the field of filters. An anti-interference filter for a satellite antenna comprises a filter body, a connecting plug is arranged on one side face of the filter body, a metal conduit and an adjusting assembly are arranged on the other side face of the filter body, and a capacitor structure is formed between the metal conduit and an antenna connector and used for optimizing transmission of radio frequency signals. The limiting rods are symmetrically arranged on the side wall of the adjusting assembly, and when the adjusting assembly is used for adjusting, the formed capacitor structure can be adjusted through the adjusting assembly, the limiting rods and the protective sleeve according to the capacitance value and the impedance characteristics under different frequencies, so that good filtering performance or signal transmission efficiency is provided; and in the adjusting process, the adjusted position can be locked and limited, the situation that the device is loosened and deviates from the original position due to the influence of the external environment is prevented, and the adjusting precision of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and in particular to an anti-interference filter for a satellite antenna and a satellite antenna. Background Art

[0002] Anti-interference filter is a key electronic component, whose main function is to suppress electromagnetic interference (EMI) and ensure the stable operation of electronic equipment and systems. In the fields of radio frequency, communication, power, etc., the application of anti-interference filter is particularly critical. It can selectively allow signals of specific frequencies to pass through, while blocking or attenuating interference signals of other frequencies, thereby improving signal quality and system reliability; The patent publication number is CN201721608949.5, and the application date is 2017-11-28. It discloses an anti-interference filter, including a resonant cavity, an antenna connector is installed on the outer wall of the resonant cavity, and the antenna connector includes a connecting tube and a metal conduit. The metal conduit is inserted in the connecting tube, and a tubular PTFE dielectric layer is arranged between the inner wall of the connecting tube and the outer wall of the metal conduit. The beneficial effect of the utility model is that it can fine-tune the position of the connecting tube so that the capacitor structure has a better working effect. After the adjustment is completed, the adjustment structure can be removed.

[0003] However, the above patent has the following problems: the threaded connection method is used for adjustment, which may become loose due to vibration and other reasons, affecting the adjustment effect and the stability of the structure, thereby causing the adjustment accuracy to deteriorate and errors to exist, affecting the filtering effect. For this reason, we propose an anti-interference filter for satellite antennas to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the capacitor structure is adjusted by threaded connection in the prior art, which may become loose due to vibration and other reasons, affecting the adjustment effect and the stability of the structure, thereby causing the adjustment accuracy to deteriorate, errors to exist, and affecting the filtering effect. An anti-interference filter for satellite antennas and a satellite antenna are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An anti-interference filter for a satellite antenna comprises a filter body, a plug connector is provided on one side of the filter body, a metal conduit is provided on the other side of the filter body, an adjustment component is provided between the metal conduit and the antenna connector to form a capacitor structure for optimizing the transmission of radio frequency signals; a limit rod is symmetrically provided on the side wall of the adjustment component, and when the adjustment component is adjusted, the limit rod is self-locked and limited; a protective cover is slidably connected in the adjustment component, and when the adjustment component is adjusted, the protective cover is driven to telescope.

[0006] Preferably, the adjustment assembly includes a connecting pipe sleeved on one end of the metal conduit, an adjustment pipe is provided at one end of the connecting pipe, a mounting joint is installed on the top of the adjustment pipe, an external thread is provided on the surface of the connecting pipe, and an internal thread is provided on the inner wall of the adjustment pipe.

[0007] Preferably, a triangular bar is installed on one side of the two limit rods, the triangular bar is clamped on the gear ring, the gear ring is installed in the groove, the groove is opened on the inner wall of the adjusting tube, and a connecting piece is provided on one side of the triangular bar.

[0008] Preferably, the connecting member includes a sliding rod fixed on the surface of the triangular bar, a first piston is fixed at one end of the sliding rod, the first piston is slidably connected in a connecting cylinder, the connecting cylinder is arranged on one side of the connecting tube, an extrusion spring is fixed on one side of the first piston, and the end of the extrusion spring is fixedly connected to the inner wall of the connecting cylinder.

[0009] Preferably, an air inlet pipe is fixed to the top outer wall of the connecting tube, a one-way valve is provided on the air inlet pipe, an exhaust pipe is fixed to the bottom outer wall of the connecting tube, an air supply pipe is fixed to one end of the connecting tube, one end of the air supply pipe passes through the inner wall of the connecting tube and is connected to a movable part.

[0010] Preferably, the movable part includes a cavity opened on the inner wall of the connecting pipe, the cavity is connected to the air supply pipe, a tension spring is fixed inside the cavity, a second piston is fixed to the end of the tension spring, the bottom of the second piston is fixedly connected to the protective sleeve, and the protective sleeve is slidably connected to the connecting pipe.

[0011] Preferably, a connecting sleeve is fixed to the outer wall of the connecting pipe, the connecting tube is fixedly connected to the connecting sleeve, the gas delivery pipe runs through the connecting sleeve, and an isolation ring is arranged inside the connecting pipe.

[0012] Preferably, a lubricating layer is provided at the connection between the metal conduit and the regulating component, and the lubricating layer is a PTFE medium layer.

[0013] Preferably, a fixing ring is fixedly mounted on the outer wall of the regulating tube by means of bolts, and one end of the fixing ring is fixedly connected to the filter body by means of a fixing rod.

[0014] Preferably, the limiting rod and the triangular bar are inserted into the groove, and the gear rings are distributed in the groove at equal intervals.

[0015] A satellite antenna comprises an anti-interference filter used for the satellite antenna.

[0016] Compared with the prior art, the present invention provides an anti-interference filter for a satellite antenna, which has the following beneficial effects: 1. This anti-interference filter for a satellite antenna can adjust the length of the composed capacitor structure by setting an adjustment component between the metal conduit and the antenna connector, thereby optimizing the parameters of the capacitor structure so that it can better meet the design requirements, such as providing good filtering performance or signal transmission efficiency within a specific frequency range.

[0017] 2. This kind of anti-interference filter for satellite antenna can be used for limit locking operation through symmetrically arranged limit rods in cooperation with the gear ring during adjustment operation, so as to avoid loosening of the adjustment component during adjustment and avoid being affected by the external environment, thereby improving the application range of the filter in the actual use environment and improving the filtering effect.

[0018] 3. This anti-interference filter for satellite antenna, when adjusting the distance between the connecting tube and the adjusting tube, the protective sleeve can be expanded and contracted in the connecting tube during the adjustment process, so as to protect the exposed connection part between the connecting tube and the metal conduit to avoid interference from the magnetic field.

[0019] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention can adjust the formed capacitor structure according to the size of the capacitance value and its impedance characteristics at different frequencies through the adjustment components, limit rods and protective covers, so as to provide good filtering performance or signal transmission efficiency, and the adjusted position can be locked and limited during the adjustment process to prevent loosening and deviation of the original position caused by the influence of the external environment, thereby improving the accuracy of device adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an anti-interference filter for a satellite antenna proposed by the present invention; Figure 2 A schematic diagram of the side structure of an anti-interference filter for a satellite antenna proposed by the present invention; Figure 3 A schematic diagram of the top view of the anti-interference filter for a satellite antenna proposed by the present invention; Figure 4 The present invention proposes Figure 3 Schematic diagram of the AA section structure; Figure 5 The present invention proposes Figure 4 A schematic diagram of the enlarged structure of the middle A area; Figure 6 This is a schematic diagram of a partial cross-section of a three-dimensional structure of a regulating tube in an anti-interference filter for a satellite antenna proposed by the present invention; Figure 7 This is a schematic diagram of the structure of the regulating pipe and the connecting pipe in a partially exploded state proposed by the present invention; Figure 8 This is a schematic diagram of a partial cross-sectional structure of a connecting pipe in an anti-interference filter for a satellite antenna proposed by the present invention; Fig. 9 The present invention proposes Figure 8 Schematic diagram of the enlarged structure of area B in the middle.

[0021] In the figure: 1. filter body; 11. plug connector; 2. metal conduit; 3. adjustment component; 30. connecting pipe; 31. adjustment pipe; 32. installation joint; 301. external thread; 302. internal thread; 4. limit rod; 41. triangle bar; 42. slide rod; 43. first piston; 430. connecting cylinder; 44. extrusion spring; 45. groove; 46. gear ring; 51. intake pipe; 52. one-way valve; 53. exhaust pipe; 54. air supply pipe; 55. tension spring; 56. second piston; 57. protective sleeve; 58. cavity; 6. connecting sleeve; 7. isolation ring; 8. fixing ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, the term "multiple" refers to two or more. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0024] In the description of this specification, the description of the terms "one embodiment", "some implementations", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0025] Reference Figure 1-Figure 9 An anti-interference filter for a satellite antenna includes a filter body 1, a plug connector 11 is provided on one side of the filter body 1, and a metal conduit 2 adjustment component 3 is provided on the other side of the filter body 1, which is arranged between the metal conduit 2 and the antenna connector to form a capacitor structure for optimizing the transmission of radio frequency signals; a limit rod 4 is symmetrically arranged on the side wall of the adjustment component 3, and when the adjustment component 3 is adjusted, the limit rod 4 is self-locked and limited; a protective cover 57 is slidably connected in the adjustment component 3, and when the adjustment component 3 is adjusted, the protective cover 57 is driven to telescope.

[0026] The filter used in the antenna in the prior art can effectively suppress interference signals that are different from the polarization mode of the required signal, improve the signal-to-noise ratio and reception quality of the signal, and in actual use, a metal conduit 2 installed on one side of the filter body 1 is connected to the connection end of the antenna to filter the high-frequency output signal of the antenna and enter the resonant cavity in the filter body 1. When the signal passes through the cavity, only the signal with the same resonant frequency as the cavity can pass through, and then the transmitted signal is processed and analyzed. In this solution, an adjustment component 3 is set and installed between the antenna connector and the metal conduit 2 to form a capacitor structure. According to the size of the capacitance value and its impedance characteristics at different frequencies, the length of the adjustment component 3 can be adjusted to optimize the parameters of the capacitor structure so that it can better meet the design requirements, such as in a specific frequency range. It provides good filtering performance or signal transmission efficiency, and during adjustment, the threaded structure used in the prior art lacks a locking and limiting function after adjustment. When the antenna is installed on a moving platform, it is easy to be affected by vibrations on the internal structure, which in turn easily causes the adjusted structural position to change and loosen, thereby affecting the accuracy of the adjustment. Therefore, a symmetrical limiting rod 4 is provided in the scheme, which can move synchronously during the adjustment process of the adjustment component 3. After the adjustment is completed, the adjusted position is automatically limited to prevent rotational displacement and loosening. On the other hand, during the adjustment process, the protective cover 57 is installed to move in the connecting pipe 30 to cover and protect the exposed part of the connection between the adjustment component 3 and the metal conduit 2 to avoid electromagnetic interference from the external environment, thereby further improving the use effect of the filter.

[0027] It should be noted that the anti-interference filter is mainly used for installation on a satellite antenna.

[0028] In a preferred embodiment, referring to Figure 5 , Figure 6 , Figure 7 and Fig. 9 , an anti-interference filter for a satellite antenna, comprising a filter body 1, a plug connector 11 is arranged on one side of the filter body 1, and a metal conduit 2 adjustment component 3 is arranged on the other side of the filter body 1, and a capacitor structure is formed between the metal conduit 2 and the antenna connector to optimize the transmission of radio frequency signals; a limit rod 4 is symmetrically arranged on the side wall of the adjustment component 3, and when the adjustment component 3 is adjusted, the limit rod 4 is self-locking and limited; a protective sleeve 57 is slidably connected in the adjustment component 3, and when the adjustment component 3 is adjusted, the protective sleeve 57 is driven to telescopically move. The adjustment component 3 comprises a connecting pipe 30 sleeved on one end of the metal conduit 2, an adjustment pipe 31 is arranged at one end of the connecting pipe 30, and a mounting joint 32 is installed on the top of the adjustment pipe 31, and an external thread 301 is arranged on the surface of the connecting pipe 30, and an internal thread 301 is arranged on the inner wall of the adjustment pipe 31 The groove 302, one side of the two limit rods 4 are both installed with a triangular bar 41, the triangular bar 41 is clamped on the gear ring 46, the gear ring 46 is installed in the groove 45, the groove 45 is opened on the inner wall of the adjusting tube 31, one side of the triangular bar 41 is provided with a connecting piece, the connecting piece includes a sliding rod 42 fixed on the surface of the triangular bar 41, one end of the sliding rod 42 is fixed with a first piston 43, the first piston 43 is slidably connected in a connecting cylinder 430, the connecting cylinder 430 is arranged on one side of the connecting tube 30, one side of the first piston 43 is fixed with an extrusion spring 44, the end of the extrusion spring 44 is fixedly connected to the inner wall of the connecting cylinder 430, a lubricating layer is provided at the connection between the metal conduit 2 and the adjusting component 3, the lubricating layer is a PTFE medium layer, the limit rod 4 and the triangular bar 41 are inserted in the groove 45, and the gear rings 46 are evenly spaced and distributed in the groove 45; Among them, a PTFE dielectric layer is provided between the metal conduit 2 and the adjustment component 3, which has excellent self-lubrication and dielectric properties, so that the metal conduit 2 and the connecting pipe 30 are connected and installed together, and at the same time, the sliding displacement between the connecting pipe 30 in the adjustment component 3 and the metal conduit 2 is not affected; When adjustment operation is required, the staff manually holds the two limit rods 4, close to the outer wall of the connecting tube 30, and then rotates the connecting tube 30, wherein the external thread 301 on the connecting tube 30 is adapted to the internal thread 302 on the inner wall of the adjusting tube 31, so that the connecting tube 30 extends into the interior of the adjusting tube 31 to adjust the overall length of the adjusting component 3 and change the entire capacitor structure. When it is adjusted to the appropriate position, the hand holding the limit rod 4 is released, and under the elastic rebound force of the extrusion spring 44, the triangular bar 41 installed on one side of the limit rod 4 is stuck on the gear ring 46 in the groove 45, thereby limiting and locking the adjusted position, so that it will not cause loosening or rotation displacement in the future, thereby improving the filtering effect of the device after adjustment. Compared with the prior art, the accuracy of the device adjustment is improved to avoid being affected by vibration in the external environment or other resulting offset and loosening.

[0029] In a preferred embodiment, referring to Figure 8 and Fig. 9, an anti-interference filter for a satellite antenna, comprising a filter body 1, a plug connector 11 is arranged on one side of the filter body 1, and a metal conduit 2 adjustment component 3 is arranged on the other side of the filter body 1, and a capacitor structure is formed between the metal conduit 2 and the antenna connector to optimize the transmission of radio frequency signals; a limit rod 4 is symmetrically arranged on the side wall of the adjustment component 3, and when the adjustment component 3 is adjusted, it is self-locked and limited by the limit rod 4; a protective sleeve 57 is slidably connected in the adjustment component 3, and when the adjustment component 3 is adjusted, the protective sleeve 57 is driven to telescopically move; a triangular bar 41 is installed on one side of the two limit rods 4, and the triangular bar 41 is clamped on the gear ring 46, and the gear ring 46 is installed in the groove 45, and the groove 45 is opened on the inner wall of the adjustment tube 31, and a connecting piece is arranged on one side of the triangular bar 41, and the connecting piece includes a sliding rod 42 fixed on the surface of the triangular bar 41, and a first piston 43 is fixed on one end of the sliding rod 42, and the first piston 43 is slidably connected in the connecting cylinder 430, and the connecting cylinder The connecting tube 430 is provided at one side of the connecting tube 30. A compression spring 44 is fixed to one side of the first piston 43. The end of the compression spring 44 is fixedly connected to the inner wall of the connecting tube 430. An air inlet pipe 51 is fixed to the top outer wall of the connecting tube 430. A one-way valve 52 is provided on the air inlet pipe 51. An exhaust pipe 53 is fixed to the bottom outer wall of the connecting tube 430. An air delivery pipe 54 is fixed to one end of the connecting tube 430. One end of the air delivery pipe 54 passes through the inner wall of the connecting tube 30 and is connected to a movable part. The movable part includes an opening A cavity 58 is provided on the inner wall of the connecting tube 30, and the cavity 58 is connected with the air supply pipe 54. A tension spring 55 is fixed inside the cavity 58, and a second piston 56 is fixed at the end of the tension spring 55. The bottom of the second piston 56 is fixedly connected to a protective sleeve 57, and the protective sleeve 57 is slidingly connected to the connecting tube 30. A connecting sleeve 6 is fixed to the outer wall of the connecting tube 30, and the connecting cylinder 430 is fixedly connected to the connecting sleeve 6. The air supply pipe 54 runs through the connecting sleeve 6, and an isolation ring 7 is provided inside the connecting tube 30.

[0030] During the adjustment process, the limit rod 4 is manually held to drive the connecting tube 30 to rotate and adjust. The limit rod 4 needs to be pressed frequently, so that the first piston 43 slides back and forth inside the connecting tube 430, so that the external air is sucked into the interior of the connecting tube 430 through the air inlet pipe 51, and then transported to the interior of the cavity 58 through the air delivery pipe 54. The air in the cavity 58 squeezes the second piston 56, so that the protective sleeve 57 at the bottom of the second piston 56 moves downward, so that the protective sleeve 57 extends from the inner wall of the connecting tube 30, and can cover and protect the exposed part of the connection between the metal conduit 2 and the adjustment component 3 during adjustment, so as to achieve a good electromagnetic shielding protection effect, prevent external electromagnetic interference, and affect the transmission of electrical signals in the capacitor structure. At the same time, the protective sleeve 57 can play a certain dustproof role, so as to keep the metal conduit 2 and the connecting tube 30 sliding smoothly; It should be noted that a valve is provided on the exhaust pipe 53. When the length of the capacitor structure is shortened during adjustment, the exhaust is exhausted by manually opening the valve on the exhaust pipe 53. Then, the elastic rebound of the tension spring 55 and the compression spring 44 causes the protective cover 57 to move upward without affecting the stability of the structure.

[0031] In a preferred embodiment, referring to Figure 8 and Fig. 9 , an anti-interference filter for a satellite antenna, comprising a filter body 1, a plug connector 11 is arranged on one side of the filter body 1, a metal conduit 2 adjustment component 3 is arranged on the other side of the filter body 1, and a capacitor structure is formed between the metal conduit 2 and the antenna connector to optimize the transmission of radio frequency signals; a limit rod 4 is symmetrically arranged on the side wall of the adjustment component 3, and when the adjustment component 3 is adjusted, the limit rod 4 is self-locking and limited; a protective sleeve 57 is slidably connected in the adjustment component 3, and when the adjustment component 3 is adjusted, the protective sleeve 57 is driven to telescopically move, a connecting sleeve 6 is fixed to the outer wall of the connecting pipe 30, a connecting tube 430 is fixedly connected to the connecting sleeve 6, an air delivery pipe 54 runs through the connecting sleeve 6, an isolation ring 7 is arranged inside the connecting pipe 30, and a fixing ring 8 is fixedly installed on the outer wall of the adjusting pipe 31 by bolts, and one end of the fixing ring 8 is fixedly connected to the filter body 1 through a fixing rod; The connecting sleeve 6 and the isolation ring 7 are made of plastic and have excellent insulation properties, so that the transmitted model is transmitted from the connecting pipe 30 to the metal conduit 2, and the adjusting tube 31 can be installed and fixed by the fixing ring 8 to prevent the adjusting tube 31 from loosening, thereby improving the stability of the adjusting component.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-interference filter for a satellite antenna, comprising a filter body (1), a plug connector (11) being arranged on one side of the filter body (1), and a metal conduit (2) being arranged on the other side of the filter body (1), characterized in that: An adjustment component (3) is arranged between the metal conduit (2) and the antenna connector to form a capacitor structure for optimizing the transmission of radio frequency signals; A limit rod (4) is symmetrically arranged on a side wall of the adjustment component (3); when the adjustment component (3) is adjusted, the limit rod (4) is self-locked and limited; The protective sleeve (57) is slidably connected in the adjustment component (3), and when the adjustment component (3) is adjusted, the protective sleeve (57) is driven to perform telescopic movement.

2. The anti-interference filter for a satellite antenna according to claim 1, characterized in that: The regulating assembly (3) comprises a connecting pipe (30) sleeved on one end of the metal conduit (2), an regulating pipe (31) being provided at one end of the connecting pipe (30), a mounting joint (32) being installed at the top of the regulating pipe (31), an external thread (301) being provided on the surface of the connecting pipe (30), and an internal thread (302) being provided on the inner wall of the regulating pipe (31).

3. The anti-interference filter for satellite antenna according to claim 2, characterized in that: A triangular bar (41) is installed on one side of the two limit rods (4), the triangular bar (41) is clamped on the gear ring (46), the gear ring (46) is installed in a groove (45), the groove (45) is opened on the inner wall of the adjustment tube (31), and a connecting piece is provided on one side of the triangular bar (41).

4. The anti-interference filter for a satellite antenna according to claim 3, characterized in that: The connecting member comprises a sliding rod (42) fixed on the surface of the triangular bar (41), a first piston (43) being fixed at one end of the sliding rod (42), the first piston (43) being slidably connected in a connecting cylinder (430), the connecting cylinder (430) being arranged on one side of the connecting tube (30), a pressing spring (44) being fixed on one side of the first piston (43), the end of the pressing spring (44) being fixedly connected to the inner wall of the connecting cylinder (430).

5. The anti-interference filter for satellite antenna according to claim 4, characterized in that: An air intake pipe (51) is fixed to the top outer wall of the connecting tube (430), and a one-way valve (52) is provided on the air intake pipe (51). An exhaust pipe (53) is fixed to the bottom outer wall of the connecting tube (430). An air delivery pipe (54) is fixed to one end of the connecting tube (430), and one end of the air delivery pipe (54) passes through the inner wall of the connecting tube (30) and is connected to a movable part.

6. The anti-interference filter for satellite antenna according to claim 5, characterized in that: The movable part comprises a cavity (58) formed on the inner wall of the connecting pipe (30), the cavity (58) being connected to the gas supply pipe (54), a tension spring (55) being fixed inside the cavity (58), a second piston (56) being fixed to the end of the tension spring (55), the bottom of the second piston (56) being fixedly connected to a protective sleeve (57), and the protective sleeve (57) being slidably connected to the connecting pipe (30).

7. The anti-interference filter for a satellite antenna according to claim 6, characterized in that: A connecting sleeve (6) is fixed to the outer wall of the connecting pipe (30), the connecting tube (430) is fixedly connected to the connecting sleeve (6), the gas delivery pipe (54) runs through the connecting sleeve (6), and an isolation ring (7) is provided inside the connecting pipe (30).

8. The anti-interference filter for a satellite antenna according to claim 2, characterized in that: A fixing ring (8) is fixedly mounted on the outer wall of the regulating tube (31) by means of bolts, and one end of the fixing ring (8) is fixedly connected to the filter body (1) by means of a fixing rod.

9. The anti-interference filter for a satellite antenna according to claim 3, characterized in that: The limiting rod (4) and the triangular bar (41) are inserted into the groove (45), and the gear rings (46) are distributed in the groove (45) at equal intervals.

10. A satellite antenna, characterized in that: Includes anti-interference filters for satellite antennas.

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