Power divider

Abstract

The utility model discloses a power divider, which relates to the technical field of radio frequency of a communication system, aims to solve the problem of large size of the power divider, and comprises a cavity tube for accommodating a stepped conductor, one end of the stepped conductor is internally provided with an insulating tube and an input pin, the input pin is connected with a first radio frequency connector, and the first radio frequency connector is connected with a second radio frequency connector. The side surface of the cavity tube is connected with a plurality of second radio frequency connectors, the other end of the stepped conductor is connected with one end of a grounding pin, the other end of the grounding pin is connected with a grounding cover, and the two ends of the cavity tube are respectively connected with the first radio frequency connectors and the grounding cover. The cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of radio frequency of communication systems, and in particular relates to a power distributor. Background Art

[0002] As a signal transmission device, power dividers are widely used in the field of wireless communications. Their function is to connect the communication signal emitted by the base station to the power divider through a cable and split the signal into two or more paths, and then the indoor antenna provides communication signal coverage to different areas. Existing power dividers mainly use a circular or square cavity tube structure. The inner conductor adopts a standard quarter-wavelength impedance transformation method. The cavity is molded from aluminum and the inner conductor is processed from copper or aluminum. The biggest disadvantage of this structure is its long size. Taking a two-way power divider with an operating frequency of 694-3800MHz as an example, it is designed according to the standard quarter-wavelength impedance transformation method. Its inner conductor is 180mm long and the cavity length exceeds 200mm. The overall size is too long, the weight is increased, the material cost is high, and the packaging and transportation costs also increase simultaneously.

[0003] For example, a Chinese patent with publication number CN201689967U relates to a passive cavity power divider comprising a λ / 4 stepped impedance transformer and a housing. The stepped impedance transformer is disposed within the housing and is a copper axial conductor. A dielectric layer is provided between the stepped impedance transformer and the housing, filling the space between the housing and the stepped impedance transformer. This utility model injects polytetrafluoroethylene into the copper axial conductor and the housing to form a dielectric layer, shortening the transmission wavelength. This shortens the length of the stepped impedance transformer during the design process, thereby reducing manufacturing costs. The use of a cast-in dielectric method also reduces process complexity. However, the Chinese patent with publication number CN201689967U still uses a λ / 4 stepped impedance transformer, making it difficult to further reduce the length. Utility Model Content

[0004] In order to solve the problem of large size of the power divider, the utility model proposes a power divider with simple structure and reasonable design, which can greatly reduce the size and save costs.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions: a power distributor,

[0006] The invention comprises a cavity tube (5) for accommodating a stepped conductor (4), wherein an insulating tube (3) and an input pin (2) are provided inside one end of the stepped conductor, wherein the input pin is connected to a first radio frequency connector (1), and a plurality of second radio frequency connectors (6) are connected to the side of the cavity tube, wherein the other end of the stepped conductor is connected to one end of a grounding pin (7), and the other end of the grounding pin is connected to a grounding cover (8), and the two ends of the cavity tube are respectively connected to the first radio frequency connector and the grounding cover.

[0007] In this technical solution, the power divider uses a stepped conductor as the inner conductor, and the inner conductor is changed from the original quarter-wavelength step impedance transformation to a one-sixteenth-wavelength step impedance transformation. The inner conductor impedance is changed from high to low to high-low interval arrangement, and capacitor loading is introduced at the input end and inductor loading is connected in parallel at the output end, thereby realizing a miniaturized and wider bandwidth design, greatly saving the material cost and use cost of the product.

[0008] The utility model is further configured as follows: the step conductor is formed by coaxially alternating connection of a plurality of thick round rods and thin round rods, and the length of the thick round rods and the length of the thin round rods are both one sixteenth of a wavelength.

[0009] In this technical solution, the inner conductor is changed from the original quarter-wavelength step impedance transformation to a one-sixteenth-wavelength step impedance transformation, which can further reduce the length of the inner conductor.

[0010] The present invention is further configured as follows: a first threaded hole is respectively provided at both ends of the cavity tube, one end of the first RF connector and one end of the grounding cover are respectively provided with a first thread, and the first thread is connected in the first threaded hole.

[0011] In this technical solution, the first radio frequency connector and the grounding cover are both connected to the cavity tube through threads.

[0012] The present invention is further configured as follows: a plurality of first threaded holes are provided on the side surface of the cavity tube; one end of the second radio frequency connector is provided with a first thread, and the first thread is connected to the first threaded hole.

[0013] In this technical solution, the second radio frequency connector is connected to the cavity tube via threads.

[0014] The present invention is further configured as follows: a connector is provided at one end of the stepped conductor, the connector and the insulating tube are both cylindrical structures, the outer wall of the insulating tube is connected to the inner wall of the stepped conductor, and the input pin is connected to the connector of the stepped conductor through the insulating tube to form a microwave structure capacitor.

[0015] In this technical solution, there is no direct metal contact between the step conductor and the input pin, but they are separated by an insulating tube, thereby forming a microwave structure capacitor between the input pin and the step conductor.

[0016] The present invention is further configured as follows: a second threaded hole is provided on one threaded side of the grounding cover, the diameter of the second threaded hole is smaller than the diameter of the first threaded hole, one end of the grounding pin is provided with a second thread, and the second thread is connected to the second threaded hole.

[0017] In this technical solution, the grounding pin and the grounding cover are connected via a second thread.

[0018] The present invention is further configured as follows: the grounding pin includes a columnar needle portion, one end of the needle portion is connected to a first connecting portion, and the other end is sequentially connected to a second connecting portion and a threaded portion, the threaded portion is provided with a second thread, the diameters of the first connecting portion and the second connecting portion are larger than the diameter of the needle portion, and the first connecting portion is plugged into one end of the step conductor.

[0019] In this technical solution, a first connecting portion is provided at one end of the needle portion, and the first connecting portion of the grounding needle is plugged into the stepped conductor.

[0020] The present invention is further configured such that: the diameter of the grounding pin is smaller than the diameter of the stepped conductor.

[0021] In this technical solution, the diameter of the grounding pin is smaller than that of the step conductor, which is equivalent to a high-frequency microwave inductor, connected in parallel between the signal distribution point and the ground, playing the role of expanding the high-frequency bandwidth.

[0022] The present invention is further configured as follows: the cavity tube is a hollow columnar structure, and the cavity tube is made of aluminum alloy.

[0023] In this technical solution, the cavity tube can adopt a circular or square structure, a cylindrical through hole is provided in the cavity tube, and the cavity tube is made of aluminum alloy.

[0024] The present invention is further configured such that: the insulating tube is made of Teflon material, and the input pin and the stepped conductor are made of metal material.

[0025] In this technical solution, the insulating tube is made of insulating Teflon material, and the input pins and the stepped conductors are both made of metal.

[0026] The beneficial effects of the present invention are as follows: the inner conductor adopts a stepped conductor as the inner conductor, and the inner conductor changes from the original quarter-wavelength stepped impedance transformation to one-sixteenth-wavelength stepped impedance transformation, the frequency band is wider, the size is smaller, and the material cost and use cost of the product are lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of a power distributor of the utility model.

[0028] Reference numerals: first RF connector 1 ; input pin 2 ; insulating tube 3 ; stepped conductor 4 ; cavity tube 5 ; second RF connector 6 ; ground pin 7 ; ground cover 8 . DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific implementation method described here is only an optimal embodiment of the present invention, which is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] This embodiment provides a power divider, which is composed of a first RF connector 1, an input pin 2, an insulating tube 3, a stepped conductor 4, a cavity tube 5, a second RF connector 6, a ground pin 7 and a ground cover 8. Figure 1 .

[0032] In this embodiment, the lumen 5 is a square hollow cylindrical structure made of aluminum alloy. Specifically, the lumen is formed into a regular quadrangular prism with a cylindrical through hole provided therein. The regular quadrangular prism coincides with the central axis of the cylinder. The diameter of the through hole is 14 mm, and the side length of the regular quadrangular prism is 25 mm.

[0033] A first threaded hole is respectively provided at both ends of the cavity tube, and is connected to the first RF connector 1 and the grounding cover 8 respectively.

[0034] A plurality of first threaded holes are provided on the side surface of the cavity tube, and a plurality of second RF connectors 6 are connected thereto.

[0035] One end of the first RF connector 1 , the second RF connector 6 and the grounding cover 8 are all provided with a first thread.

[0036] In this embodiment, two first threaded holes are provided on the side of the cavity, respectively provided on the first side of the cavity and the second side opposite to the first side. Each of the two first threaded holes is connected to a second RF connector.

[0037] In this embodiment, the first RF connector 1 and the second RF connector 6 are made of brass electroplated with a ternary alloy, and the grounding cover 8 is made of metal.

[0038] The first RF connector 1 and the grounding cover 8 are screwed to the end surface of the cavity 5 through threads, and the second RF connector 6 is screwed to the side surface of the cavity 5 through threads.

[0039] The first RF connector 1 , the second RF connector 6 and the ground cover 8 are connected to the cavity tube 5 to form a cavity inside the cavity tube, and the stepped conductor is arranged in the cavity.

[0040] A connector is provided at one end of the stepped conductor. The connector and the insulating tube are both cylindrical structures. The outer wall of the insulating tube is connected to the inner wall of the stepped conductor. The input pin is connected to the connector of the stepped conductor through the insulating tube to form a microwave structural capacitor.

[0041] In this embodiment, the insulating tube 3 is made of Teflon (PTFE), the input pin 2 is made of metal, and the stepped conductor 4 is made of metal.

[0042] An insulating tube 3 is placed over the input pin 2 and then inserted into the stepped conductor 4. The input pin 2 and the stepped conductor 4 are isolated by the insulating tube 3, with no direct metallic connection between them. This creates a microwave structure capacitor between the input pin 2 and the stepped conductor 4, which serves to broaden the operating frequency bandwidth at the low-frequency end.

[0043] The stepped conductor 4 is composed of several thick and thin round rods connected end to end. Several thick round rods and thin round rods are coaxially arranged alternately. The length of each round rod is one sixteenth of a wavelength. It is a multi-step complex impedance transformation and matching network that can achieve better reflection fluctuations with a shorter size.

[0044] The number of sections of the ladder conductor can be calculated and selected based on the design requirements of the impedance ratio, the maximum loss in the ladder impedance passband, and the relative bandwidth.

[0045] The grounding needle includes a columnar needle portion, one end of the needle portion is provided with a first connecting portion, and the other end is sequentially connected with a second connecting portion and a threaded portion, wherein the threaded portion is provided with a second thread.

[0046] A second threaded hole is provided at one end of the grounding cover 8 , and the diameter of the second threaded hole is smaller than that of the first threaded hole.

[0047] One end of the grounding pin 7 is screwed into the second threaded hole of the grounding cover 8 through a second thread, and the other end of the grounding pin 7 is plugged into the tail end of the stepped conductor 4 .

[0048] The diameters of the first connecting portion and the second connecting portion are larger than the diameter of the needle portion, and the first connecting portion is plugged into one end of the stepped conductor.

[0049] The diameter of the grounding pin is smaller than the diameter of the step conductor.

[0050] In this embodiment, the grounding pin 7 is made of copper.

[0051] The tail end of the stepped conductor 4 is a signal distribution point, which can be divided into two, three or four signals. The grounding pin 7 has a thinner diameter and plays a key role here. It is equivalent to a high-frequency microwave inductor, which is connected in parallel between the signal distribution point and the ground to expand the high-frequency bandwidth.

[0052] One end of the input pin is provided with a connection hole, and the side surface of one end of the stepped conductor is provided with a plurality of connection holes corresponding to the positions of the second radio frequency connector.

[0053] The first RF connector 1 and the second RF connector 6 are provided with a connector at one end with threads. The first RF connector is connected to the connection hole of the input pin through the connector, and the second RF connector is connected to the connection hole of the step conductor through the connector.

[0054] A power divider of the present embodiment adopts a stepped conductor as an inner conductor, and the inner conductor is changed from the original quarter-wavelength stepped impedance transformation to a one-sixteenth-wavelength stepped impedance transformation. The original inner conductor impedance is arranged in sequence from high to low, while the inner conductor impedance of a power divider of the present embodiment adopts a high-low interval arrangement, and introduces capacitor loading at the input end and parallel inductor loading at the output end, thereby realizing a miniaturized and wider bandwidth design. Compared with the current product, the length can be reduced to within 100 mm, and the operating frequency can be expanded to 617-4200 MHz, which greatly saves the material cost and use cost of the product.

[0055] It is understandable that the above principles and implementation methods are also applicable to the design of three-way power dividers and four-way power dividers.

[0056] Example 2

[0057] This embodiment provides a power divider, which is composed of a first radio frequency connector, an input pin, an insulating tube, a stepped conductor, a cavity tube, a second radio frequency connector, a ground pin and a ground cover.

[0058] In this embodiment, the lumen is a square hollow cylindrical structure made of aluminum alloy. Specifically, the lumen is formed into a regular quadrangular prism with a cylindrical through hole provided therein. The regular quadrangular prism coincides with the central axis of the cylinder. The diameter of the through hole is 14 mm, and the side length of the regular quadrangular prism is 25 mm.

[0059] A first threaded hole is respectively provided at both ends of the cavity tube, and is respectively connected to a first radio frequency connector and a grounding cover.

[0060] A plurality of first threaded holes are provided on the side surface of the cavity tube, and are connected with a plurality of second radio frequency connectors.

[0061] One end of the first RF connector, the second RF connector and the grounding cover is provided with a first thread.

[0062] In this embodiment, four first threaded holes are provided on the side surface of the lumen, respectively disposed on the four side surfaces of the lumen, and each of the four first threaded holes is connected to a second RF connector.

[0063] In this embodiment, the first RF connector and the second RF connector are made of brass electroplated with a ternary alloy, and the grounding cover is made of metal.

[0064] The first radio frequency connector and the grounding cover are screwed to the end surface of the cavity tube through threads, and the second radio frequency connector is screwed to the side surface of the cavity tube through threads.

[0065] The first radio frequency connector, the second radio frequency connector and the ground cover are connected to the cavity tube to form a cavity inside the cavity tube, and the stepped conductor is arranged in the cavity.

[0066] A connector is provided at one end of the stepped conductor. The connector and the insulating tube are both cylindrical structures. The outer wall of the insulating tube is connected to the inner wall of the stepped conductor. The input pin is connected to the connector of the stepped conductor through the insulating tube to form a microwave structural capacitor.

[0067] In this embodiment, the insulating tube is made of Teflon (PTFE), the input pin is made of metal, and the stepped conductor is made of metal.

[0068] An insulating tube is placed over the input pin and then inserted into the stepped conductor. The insulating tube isolates the input pin and the stepped conductor, creating no direct metallic connection between them. This creates a microwave structure capacitor between the input pin and the stepped conductor, broadening the operating frequency bandwidth at the low-frequency end.

[0069] The stepped conductor is composed of several thick and thin round rods connected end to end. Several thick round rods and thin round rods are coaxially arranged alternately. The length of each round rod is one sixteenth of a wavelength. It is a multi-step complex impedance transformation and matching network that can achieve better reflection fluctuations with a shorter size.

[0070] The number of sections of the ladder conductor can be calculated and selected based on the design requirements of the impedance ratio, the maximum loss in the ladder impedance passband, and the relative bandwidth.

[0071] The grounding needle includes a columnar needle portion, one end of the needle portion is provided with a first connecting portion, and the other end is sequentially connected with a second connecting portion and a threaded portion, wherein the threaded portion is provided with a second thread.

[0072] A second threaded hole is provided at one end of the grounding cover, and a diameter of the second threaded hole is smaller than a diameter of the first threaded hole.

[0073] One end of the grounding pin is screwed into the second threaded hole of the grounding cover through a second thread, and the other end of the grounding pin is plugged into the tail end of the stepped conductor.

[0074] The diameters of the first connecting portion and the second connecting portion are larger than the diameter of the needle portion, and the first connecting portion is plugged into one end of the stepped conductor.

[0075] The diameter of the grounding pin is smaller than the diameter of the step conductor.

[0076] In this embodiment, the ground pin is made of copper.

[0077] The tail end of the stepped conductor is the signal distribution point, which can be divided into two, three or four signals. The grounding pin has a thin diameter and plays a key role here. It is equivalent to a high-frequency microwave inductor, which is connected in parallel between the signal distribution point and the ground to expand the high-frequency bandwidth.

[0078] One end of the input pin is provided with a connection hole, and the side surface of one end of the stepped conductor is provided with a plurality of connection holes corresponding to the positions of the second radio frequency connector.

[0079] The first RF connector 1 and the second RF connector 6 are provided with a connector at one end with threads. The first RF connector is connected to the connection hole of the input pin through the connector, and the second RF connector is connected to the connection hole of the step conductor through the connector.

[0080] A power divider of the present embodiment adopts a stepped conductor as an inner conductor, and the inner conductor is changed from the original quarter-wavelength stepped impedance transformation to a one-sixteenth-wavelength stepped impedance transformation. The original inner conductor impedance is arranged in sequence from high to low, while the inner conductor impedance of a power divider of the present embodiment adopts a high-low interval arrangement, and introduces capacitor loading at the input end and parallel inductor loading at the output end, thereby realizing a miniaturized and wider bandwidth design. Compared with the current product, the length can be reduced to within 100 mm, and the operating frequency can be expanded to 617-4200 MHz, which greatly saves the material cost and use cost of the product.

[0081] It is understandable that the above principles and implementation methods are also applicable to the design of three-way power dividers and four-way power dividers.

[0082] Example 3

[0083] This embodiment provides a power divider, which is composed of a first radio frequency connector, an input pin, an insulating tube, a stepped conductor, a cavity tube, a second radio frequency connector, a ground pin and a ground cover.

[0084] In this embodiment, the lumen is a circular hollow cylindrical structure made of aluminum alloy. Specifically, the lumen is formed as a first cylinder, and a second cylindrical through hole is provided in the first cylinder. The central axis of the first cylinder coincides with that of the second cylinder. The diameter of the through hole is 14 mm, and the diameter of the lumen is 25 mm.

[0085] A first threaded hole is respectively provided at both ends of the cavity tube, and is respectively connected to a first radio frequency connector and a grounding cover.

[0086] A plurality of first threaded holes are provided on the side surface of the cavity tube, and are connected with a plurality of second radio frequency connectors.

[0087] One end of the first RF connector, the second RF connector and the grounding cover is provided with a first thread.

[0088] In this embodiment, four first threaded holes are provided on the side of the cavity tube. The first threaded holes are distributed at equal intervals, and each of the four first threaded holes is connected to a second RF connector.

[0089] In this embodiment, the first RF connector and the second RF connector are made of brass electroplated with a ternary alloy, and the grounding cover is made of metal.

[0090] The first radio frequency connector and the grounding cover are screwed to the end surface of the cavity tube through threads, and the second radio frequency connector is screwed to the side surface of the cavity tube through threads.

[0091] The first radio frequency connector, the second radio frequency connector and the ground cover are connected to the cavity tube to form a cavity inside the cavity tube, and the stepped conductor is arranged in the cavity.

[0092] A connector is provided at one end of the stepped conductor. The connector and the insulating tube are both cylindrical structures. The outer wall of the insulating tube is connected to the inner wall of the stepped conductor. The input pin is connected to the connector of the stepped conductor through the insulating tube to form a microwave structural capacitor.

[0093] In this embodiment, the insulating tube is made of Teflon (PTFE), the input pin is made of metal, and the stepped conductor is made of metal.

[0094] An insulating tube is placed over the input pin and then inserted into the stepped conductor. The insulating tube isolates the input pin and the stepped conductor, creating no direct metallic connection between them. This creates a microwave structure capacitor between the input pin and the stepped conductor, broadening the operating frequency bandwidth at the low-frequency end.

[0095] The stepped conductor is composed of several thick and thin round rods connected end to end. Several thick round rods and thin round rods are coaxially arranged alternately. The length of each round rod is one sixteenth of a wavelength. It is a multi-step complex impedance transformation and matching network that can achieve better reflection fluctuations with a shorter size.

[0096] The number of sections of the ladder conductor can be calculated and selected based on the design requirements of the impedance ratio, the maximum loss in the ladder impedance passband, and the relative bandwidth.

[0097] The grounding needle includes a columnar needle portion, one end of the needle portion is provided with a first connecting portion, and the other end is sequentially connected with a second connecting portion and a threaded portion, wherein the threaded portion is provided with a second thread.

[0098] A second threaded hole is provided at one end of the grounding cover, and a diameter of the second threaded hole is smaller than a diameter of the first threaded hole.

[0099] One end of the grounding pin is screwed into the second threaded hole of the grounding cover through a second thread, and the other end of the grounding pin is plugged into the tail end of the stepped conductor.

[0100] The diameters of the first connecting portion and the second connecting portion are larger than the diameter of the needle portion, and the first connecting portion is plugged into one end of the stepped conductor.

[0101] The diameter of the grounding pin is smaller than the diameter of the step conductor.

[0102] In this embodiment, the ground pin is made of copper.

[0103] The tail end of the stepped conductor is the signal distribution point, which can be divided into two, three or four signals. The grounding pin has a thin diameter and plays a key role here. It is equivalent to a high-frequency microwave inductor, which is connected in parallel between the signal distribution point and the ground to expand the high-frequency bandwidth.

[0104] One end of the input pin is provided with a connection hole, and the side surface of one end of the stepped conductor is provided with a plurality of connection holes corresponding to the positions of the second radio frequency connector.

[0105] The first RF connector 1 and the second RF connector 6 are provided with a connector at one end with threads. The first RF connector is connected to the connection hole of the input pin through the connector, and the second RF connector is connected to the connection hole of the step conductor through the connector.

[0106] A power divider of the present embodiment adopts a stepped conductor as an inner conductor, and the inner conductor is changed from the original quarter-wavelength stepped impedance transformation to a one-sixteenth-wavelength stepped impedance transformation. The original inner conductor impedance is arranged in sequence from high to low, while the inner conductor impedance of a power divider of the present embodiment adopts a high-low interval arrangement, and introduces capacitor loading at the input end and parallel inductor loading at the output end, thereby realizing a miniaturized and wider bandwidth design. Compared with the current product, the length can be reduced to within 100 mm, and the operating frequency can be expanded to 617-4200 MHz, which greatly saves the material cost and use cost of the product.

[0107] It is understandable that the above principles and implementation methods are also applicable to the design of three-way power dividers and four-way power dividers.

Claims

1. A power distributor, characterized in that: The invention comprises a cavity tube (5) for accommodating a stepped conductor (4), wherein an insulating tube (3) and an input pin (2) are provided inside one end of the stepped conductor, wherein the input pin is connected to a first radio frequency connector (1), and a plurality of second radio frequency connectors (6) are connected to the side of the cavity tube, wherein the other end of the stepped conductor is connected to one end of a grounding pin (7), and the other end of the grounding pin is connected to a grounding cover (8), and the two ends of the cavity tube are respectively connected to the first radio frequency connector and the grounding cover.

2. A power divider according to claim 1, characterized in that: The step conductor is formed by coaxially and alternately connecting a plurality of thick round rods and thin round rods, and the lengths of the thick round rods and the thin round rods are both one sixteenth of a wavelength.

3. A power divider according to claim 1, characterized in that: A first threaded hole is respectively provided at both ends of the cavity tube, and a first thread is respectively provided at one end of the first RF connector and one end of the grounding cover, and the first thread is connected in the first threaded hole.

4. A power divider according to claim 1, characterized in that: A plurality of first threaded holes are provided on the side surface of the cavity tube, and a first thread is provided on one end of the second radio frequency connector, and the first thread is connected in the first threaded hole.

5. A power divider according to claim 1, characterized in that: A connector is provided at one end of the stepped conductor. The connector and the insulating tube are both cylindrical structures. The outer wall of the insulating tube is connected to the inner wall of the stepped conductor. The input pin is connected to the connector of the stepped conductor through the insulating tube to form a microwave structural capacitor.

6. A power divider according to claim 3, characterized in that: A second threaded hole is provided on one threaded side of the grounding cover, the diameter of the second threaded hole is smaller than the diameter of the first threaded hole, and a second thread is provided on one end of the grounding pin, and the second thread is connected to the second threaded hole.

7. A power divider according to claim 1, characterized in that: The grounding pin includes a columnar needle portion, one end of the needle portion is connected to a first connecting portion, and the other end is sequentially connected to a second connecting portion and a threaded portion, the threaded portion is provided with a second thread, the diameters of the first connecting portion and the second connecting portion are larger than the diameter of the needle portion, and the first connecting portion is plugged into one end of the step conductor.

8. A power divider according to claim 1, characterized in that: The diameter of the grounding pin is smaller than the diameter of the step conductor.

9. A power divider according to claim 1, characterized in that: The lumen is a hollow columnar structure and is made of aluminum alloy.

10. A power divider according to any one of claims 1 to 9, characterized in that: The insulating tube is made of Teflon, and the input pin and the stepped conductor are made of metal.

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