Radio frequency transmission module and communication device

Abstract

The present application relates to the technical field of wireless communications, and in particular, to a radio frequency transmission module and a communication device. The radio frequency transmission module comprises an outer conductor and an inner conductor. In a first direction, the inner conductor is connected to the outer conductor, and at least one of the inner conductor and the outer conductor comprises a composite metal layer. The composite metal layer comprises a base layer and a transmission surface layer, the transmission surface layer is disposed on at least one side of the base layer in the first direction, and the transmission surface layer is press-fitted to the base layer. The electrical conductivity of the transmission surface layer is σ1, and the electrical conductivity of the base layer is σ2, wherein σ1 and σ2 satisfy: σ1>σ2. In the present application, the inner conductor and / or the outer conductor uses the composite metal layer formed by press-fitting, thereby avoiding pollution caused in an electroplating process, effectively reducing environmental pollution caused by manufacturing the radio frequency transmission module, and achieving low-carbon production.

Description

Radio frequency transmission module and communication equipment

[0001] The present application claims priority to the Chinese patent application No. 202410720934.6, filed on June 4, 2024, and entitled "Radio frequency transmission module and communication equipment", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of wireless communication technology, in particular to a radio frequency transmission module and communication equipment. BACKGROUND

[0003] In a wireless communication system, a base station antenna is an interface between a transceiver and an external propagation medium. With the development of wireless communication, the requirements for the base station antenna are usually high. The base station antenna realizes signal transmission of the base station antenna through a radio frequency transmission module, and the performance of the transmission module directly affects the performance of the antenna, especially in terms of system loss and heating. The heating of the feed network transmission module is one of the heat sources of the antenna, and the heating of the antenna will cause the temperature inside the antenna to rise, thereby bringing great challenges to the structure, materials, etc. inside the antenna.

[0004] At present, the low-loss design of the radio frequency transmission module, among which the air strip line transmission is commonly used, mainly includes a cavity, a strip line, a strip line support medium, etc.

[0005] Although the air strip line cancels most of the medium, the strip line surface generally needs to have a plating layer, which causes electroplating pollution.

[0006] SUMMARY

[0007] The present application provides a radio frequency transmission module and communication equipment, aiming to realize low-loss design of the radio frequency transmission module while realizing low-carbon production.

[0008] The present application provides a radio frequency transmission module, comprising:

[0009] an outer conductor;

[0010] an inner conductor, at least one of the inner conductor and the outer conductor in the first direction comprises a composite metal layer;

[0011] The composite metal layer comprises a base layer and a transmission surface layer, the transmission surface layer is arranged on at least one side of the base layer along the first direction, and the transmission surface layer and the base layer are press-fitted;

[0012] The electrical conductivity of the transmission surface layer is σ1, and the electrical conductivity of the base layer is σ2, σ1 and σ2 satisfy: σ1> σ2.

[0013] In the present application, the conductivity of the transmission surface layer is higher than that of the base layer. By using the transmission surface layer with high conductivity, the conductivity of the transmission surface layer is ensured, and the loss in the signal transmission process is reduced. Meanwhile, by using the base layer with low conductivity, the cost is reduced.

[0014] In one possible design, the transmission surface layer includes an upper surface layer and a lower surface layer.

[0015] In the first direction, the upper surface layer is connected to the upper side of the base layer, and the lower surface layer is connected to the lower side of the base layer.

[0016] In the first direction, the projections of the upper surface layer and the lower surface layer on the base layer completely cover the base layer.

[0017] In the present application, the transmission surface layer is arranged on both sides of the base layer along the first direction and completely covers the base layer, so as to increase the area of the transmission surface layer and improve the signal transmission efficiency.

[0018] In one possible design, the transmission surface layer includes an upper surface layer and a lower surface layer.

[0019] In the first direction, the upper surface layer is connected to the upper side of the base layer, and the lower surface layer is connected to the lower side of the base layer.

[0020] In the first direction, the projections of the upper surface layer and the lower surface layer on the base layer completely cover the base layer.

[0021] In the present application, the structure in which the transmission surface layer is formed on the base layer can be various, for example, the projections of the upper surface layer and the lower surface layer on the base layer can not completely cover the base layer, or the projection of the upper surface layer on the base layer can not completely cover the base layer, while the projection of the lower surface layer on the base layer completely covers the base layer, or the projection of the upper surface on the base layer completely covers the base layer, while the projection of the lower surface layer on the base layer does not completely cover the base layer. The structure in which the transmission surface layer is arranged on the base layer can be selected according to the actual signal transmission efficiency and cost.

[0022] In one possible design, the transmission surface layer is arranged on one side of the base layer along the first direction, and the projection of the transmission surface layer on the base layer completely covers the base layer.

[0023] In the present application, the structure in which the transmission surface layer is formed on the base layer can be that the transmission surface layer is arranged on the upper side of the base layer, or the transmission surface layer is arranged on the lower side of the base layer. The structure in which the transmission surface layer is arranged on the base layer can be selected according to the actual situation.

[0024] In a possible design, the transmission surface layer is arranged at one side of the base layer along the first direction, and a projection of the transmission surface layer on the base layer does not completely cover the base layer.

[0025] In the present application, the transmission surface layer is arranged on the upper side of the base layer, and a projection of the transmission surface layer on the base layer does not completely cover the base layer, or the transmission surface layer is arranged on the lower side of the base layer, and a projection of the transmission surface layer on the base layer does not completely cover the base layer. The structure of the transmission surface layer arranged on the base layer can be selected according to actual conditions.

[0026] In a possible design, the outer conductor is provided with a receiving space, and the inner conductor is arranged in the receiving space.

[0027] The inner conductor is arranged in the receiving space by the support assembly.

[0028] In the present application, the support assembly supports the inner conductor arranged in the receiving space of the outer conductor, so that the inner conductor is not in direct contact with the outer conductor.

[0029] In a possible design, the support assembly includes a first support member and a second support member.

[0030] The inner conductor is provided with a first through hole, the first support member is provided with a clamping portion, the second support member is provided with a matching portion, and the clamping portion can be clamped with the matching portion through the first through hole.

[0031] Along the first direction, the first support member and the second support member are in abutment with the inner wall of the receiving space.

[0032] In the present application, when the first support member, the second support member and the inner conductor are connected, the clamping portion can be clamped with the matching portion through the first through hole. The first support member and the second support member have a certain elasticity, so that when the first support member, the second support member and the inner conductor are placed in the receiving space after being connected, along the first direction, the first support member and the second support member can be in abutment with the inner wall of the receiving space, thereby limiting the movement of the inner conductor in the receiving space along the first direction, and ensuring the stability of the operation of the radio frequency transmission module.

[0033] In a possible design, the radio frequency transmission module further includes a limiting member, the inner conductor further includes a second through hole, and the outer conductor is provided with a first limiting hole and a second limiting hole.

[0034] Part of the structure of the limiting member can be matched with the first limiting hole, the second through hole and the second limiting hole, so as to limit the movement of the inner conductor in the receiving space.

[0035] In this application, the limiting member connects the inner conductor and the outer conductor to restrict the movement of the inner conductor in the second direction within the accommodating space, thereby reducing the risk of the inner conductor disconnecting from the access cables and outgoing cables on both sides under the action of external force, and ensuring the stability of the operation of the radio frequency transmission module.

[0036] When the limiting member connects the inner conductor and the outer conductor, part of the limiting member's structure can pass through the first limiting hole, the second through hole and the second limiting hole to cooperate, so as to restrict the inner conductor from moving in the second direction within the receiving space.

[0037] In one possible design, the limiting member is further provided with a first limiting part, and the outer conductor is further provided with a clearance hole that communicates with the first limiting hole.

[0038] The first limiting part can enter the receiving space through the clearance hole and can rotate to abut against the outer peripheral portion of the first limiting hole to prevent the limiting member from disengaging from the outer conductor.

[0039] In this application, while a portion of the limiting member can enter the receiving space through the first limiting hole, the first limiting part can also enter the receiving space through the clearance hole. After the first limiting part enters the receiving space through the clearance hole, the limiting member is rotated, causing the first limiting part to abut against the outer periphery of the first limiting hole. That is, the first limiting part and the clearance hole are offset to prevent the first limiting part from exiting the receiving space through the clearance hole, thereby preventing the limiting member from detaching from the outer conductor.

[0040] In one possible design, the limiting member is further provided with a second limiting part, and the outer conductor is further provided with a third limiting hole, the third limiting hole being disposed close to the first limiting hole;

[0041] After the first limiting part completes its rotation, the second limiting part can cooperate with the third limiting hole to restrict the rotation of the limiting member.

[0042] In this application, after the first limiting part has completed its rotation, the second limiting part can rotate to the upper end of the third limiting hole and insert the second limiting part into the third limiting hole to restrict the rotation of the limiting member and further restrict the separation of the limiting member from the outer conductor and the inner conductor.

[0043] In one possible design, the inner conductor is positioned above the outer conductor along the first direction;

[0044] The radio frequency transmission module further includes a third support member, which connects the inner conductor and the outer conductor.

[0045] In this application, a third support member connects the outer conductor and the inner conductor. The third support member can restrict the movement of the inner conductor relative to the outer conductor, while also providing support for the inner conductor, so that there is no direct contact between the inner conductor and the outer conductor.

[0046] In a possible design, one end of the third support member is provided with a first clamping part and the other end is provided with a second clamping part along the first direction;

[0047] The inner conductor is provided with a first clamping hole, and the outer conductor is provided with a second clamping hole;

[0048] The first clamping part can pass through the first clamping hole and be clamped with the outer peripheral part of the first clamping part, and the second clamping part can pass through the second clamping hole and be clamped with the outer peripheral part of the second clamping hole.

[0049] In the present application, the third support member has a certain elasticity, and when the third support member connects the outer conductor and the inner conductor, the first clamping part can pass through the first clamping hole and be clamped with the outer peripheral part of the first clamping part. The second clamping part can pass through the second clamping hole and be clamped with the outer peripheral part of the second clamping hole.

[0050] In a possible design, the radio frequency transmission module further includes an access cable and an outgoing cable;

[0051] One end of the outer conductor is provided with a first support part and the other end is provided with a second support part along the second direction;

[0052] Part of the structure of the access cable can be placed in the first support part and connected with one end of the inner conductor, and part of the structure of the outgoing cable can be placed in the second support part and connected with the other end of the inner conductor.

[0053] In the present application, the first support part and the second support part are formed by bending the two ends of the outer conductor towards the inner conductor, and the first support part and the second support part support the access cable and the outgoing cable.

[0054] In a possible design, the material of the transmission surface layer is one of silver and copper;

[0055] The material of the base layer is one of aluminum, steel, and stainless steel.

[0056] In the present application, the transmission surface layer can be made of materials with high electrical conductivity such as silver and copper, and the base layer can be made of materials with low cost and good support effect such as aluminum, steel, and stainless steel.

[0057] In a possible design, the transmission surface layer and the base layer are directly pressed and fixed, and under the action of pressure, the metals of the transmission surface layer and the base layer form atomic bonding.

[0058] In the present application, the transmission surface layer and the base layer are directly connected without an adhesive layer or other non-metallic material therebetween. The transmission surface layer and the base layer are fixedly connected by pressure bonding process, including but not limited to cold rolling, hot rolling, cast rolling and other laminating forming processes. Specifically, under the action of pressure, the metal of the transmission surface layer and the metal of the base layer form atomic bonding, thereby realizing the fixation of the transmission surface layer and the base layer. The present application avoids the pollution caused by electroplating, effectively reduces the environmental pollution caused by the production of the radio frequency transmission module, and realizes low-carbon production.

[0059] In one possible design, along the second direction, the cross section of the inner conductor is a non-circular cross section.

[0060] In the present application, along the second direction, the cross section of the inner conductor is a non-circular structure. Exemplarily, the inner conductor can be a plate structure, an arc segment structure, an L-shaped structure, a wave-shaped structure, a Y-shaped structure, an S-shaped structure, etc.

[0061] The present application also provides a communication device comprising the radio frequency transmission module. BRIEF DESCRIPTION OF DRAWINGS

[0062] FIG. 1 is a schematic diagram of a communication device provided by the present application;

[0063] FIG. 2 is a schematic diagram of the structure of a radio frequency transmission module provided by the present application in one specific embodiment;

[0064] FIG. 3 is a schematic diagram of a cross section of FIG. 2;

[0065] FIG. 4 is an enlarged schematic diagram of part A in FIG. 2;

[0066] FIG. 5 is a schematic diagram of a cross section of FIG. 4;

[0067] FIG. 6 is an enlarged schematic diagram of part B in FIG. 5;

[0068] FIG. 7 is an enlarged schematic diagram of part C in FIG. 2;

[0069] FIG. 8 is a schematic diagram of a cross section of FIG. 7;

[0070] FIG. 9 is a top view schematic diagram of the outer conductor in FIG. 2;

[0071] FIG. 10 is an enlarged schematic diagram of part D in FIG. 9;

[0072] FIG. 11 is a schematic diagram of a cross section of a composite metal layer in one specific embodiment;

[0073] FIG. 12 is a schematic diagram of a cross section of a composite metal layer in another specific embodiment;

[0074] FIG. 13 is a schematic diagram of a cross section of the inner conductor and the outer conductor along the second direction when the composite metal layer structure in FIG. 12 is used;

[0075] Fig. 14 is a schematic view of the inner conductor supported by the first and second support members in the accommodating space when the composite metal layer structure of Fig. 12 is used;

[0076] Fig. 15 is a schematic view of the limiting member connecting the inner conductor and the outer conductor when the composite metal layer structure of Fig. 12 is used;

[0077] Fig. 16 is a schematic view of a cross section of a composite metal layer in another embodiment;

[0078] Fig. 17 is a schematic view of a cross section of the inner conductor and the outer conductor in a second direction when the composite metal layer structure of Fig. 16 is used;

[0079] Fig. 18 is a schematic view of the inner conductor supported by the first and second support members in the accommodating space when the composite metal layer structure of Fig. 16 is used;

[0080] Fig. 19 is a schematic view of the limiting member connecting the inner conductor and the outer conductor when the composite metal layer structure of Fig. 16 is used;

[0081] Fig. 20 is a schematic view of a cross section of a composite metal layer in another embodiment;

[0082] Fig. 21 is a schematic view of a cross section of a composite metal layer in another embodiment;

[0083] Fig. 22 is a schematic view of a cross section of the inner conductor and the outer conductor in a second direction when the composite metal layer structure of Fig. 21 is used;

[0084] Fig. 23 is a schematic view of the inner conductor supported by the first and second support members in the accommodating space when the composite metal layer structure of Fig. 21 is used;

[0085] Fig. 24 is a schematic view of the limiting member connecting the inner conductor and the outer conductor when the composite metal layer structure of Fig. 21 is used;

[0086] Fig. 25 is a schematic view of a cross section of a composite metal layer in another embodiment;

[0087] Fig. 26 is a schematic view of a cross section of a composite metal layer in another embodiment;

[0088] Fig. 27 is a schematic view of a structure of a radio frequency transmission module according to the present application in another embodiment;

[0089] Fig. 28 is a schematic view of a cross section of Fig. 27;

[0090] Fig. 29 is a schematic view of an enlarged view of portion E of Fig. 27;

[0091] Fig. 30 is a schematic view of a cross section of Fig. 29;

[0092] Fig. 31 is a cross-sectional view of the radio frequency transmission module according to an embodiment of the present application;

[0093] Fig. 32 is a cross-sectional view of the radio frequency transmission module according to an embodiment of the present application;

[0094] Fig. 33 is a cross-sectional view of the radio frequency transmission module according to an embodiment of the present application.

[0095] Reference signs: 100 - communication device; 1 - radio frequency transmission module, 11 - outer conductor, 111 - containing space, 112 - first support part, 113 - second support part, 114 - first limiting hole, 115 - second limiting hole, 116 - avoiding hole, 117 - third limiting hole, 118 - second clamping hole, 12 - inner conductor, 121 - composite metal layer, 121a - base layer, 121b - transmission surface layer, 121b1 - upper surface layer, 121b2 - lower surface layer, 122 - first through hole, 123 - second through hole, 124 - first clamping hole, 13 - support assembly, 131 - first support piece, 131a - clamping part, 131a1 - first clamping protrusion, 132 - second support piece, 132a - matching part, 132b - avoiding slot, 14 - limiting piece, 141 - first limiting part, 142 - second limiting part, 15 - access cable, 16 - outgoing cable; 17 - third support piece, 171 - first clamping part, 171a - second clamping protrusion, 172 - second clamping part, 172a - third clamping protrusion; X - third direction, Y - second direction, Z - first direction. DETAILED DESCRIPTION

[0096] Fig. 1 is a structural schematic diagram of a communication device 100 according to an embodiment of the present application. The communication device 100 can be, but is not limited to, a base station, a router, a vehicle-mounted device, etc. In this embodiment, the communication device 100 is taken as an example of a base station, which includes a radio frequency transmission module. The base station realizes signal transmission of the base station through the radio frequency transmission module. Exemplarily, the radio frequency transmission module provided in this embodiment can be applied to the field of base station antennas, such as a power divider, a combiner, a phase shifter, etc.

[0097] At present, the low-loss design of the radio frequency transmission module is commonly to adopt air strip line transmission, mainly including a cavity, a strip line, a strip line support medium, etc. Although the air strip line cancels most of the medium, the strip line surface generally needs to have a plating layer (commonly electroplated silver, and can also be copper, gold, tin, nickel, etc.), which exists electroplating pollution and does not conform to the development concept of low carbon and environmental protection.

[0098] Therefore, this embodiment provides a radio frequency transmission module to solve the above technical problems. The possible structure of the radio frequency transmission module is described in detail below in combination with the drawings.

[0099] It should be noted that, as shown in FIG. 2, it is a schematic diagram of the radio frequency transmission module 1 in an embodiment, as shown in FIG. 3, it is a cross-sectional schematic diagram of the radio frequency transmission module 1 shown in FIG. 2, taking the embodiment shown in FIG. 2 and FIG. 3 as an example, the first direction Z refers to the normal direction of the composite surface of the transmission surface layer 121b and the base layer 121a, which is the thickness direction of the radio frequency transmission module 1 from the figure. In addition, when the composite metal layer 121 has a curved structure, the composite surface of the transmission surface layer 121b and the base layer 121a may be a curved surface, at this time, in the "transmission surface layer 121b and base layer 121a are connected along the first direction Z", the first direction Z not only includes the thickness direction of the radio frequency transmission module 1, but also can include the width direction of the radio frequency transmission module 1, and also can include the normal direction of the curved surface formed by the curved feature of the composite metal layer 121, which will be described in detail below in combination with the embodiment. In addition, it needs to be set according to the actual situation, which is not limited in this embodiment.

[0100] The second direction Y refers to the signal transmission direction of the radio frequency transmission module 1, which is the length direction of the radio frequency transmission module 1 from the figure. In addition, when the radio frequency transmission module 1 is S-shaped, Y-shaped, irregular-shaped, the second direction Y is not necessarily the length direction of the radio frequency transmission module, which needs to be set according to the actual situation, which is not limited in this embodiment.

[0101] The third direction X refers to the direction approximately perpendicular to the second direction Y and the first direction Z, which is the width direction of the radio frequency transmission module 1 from the figure, which needs to be set according to the actual situation, which is not limited in this embodiment.

[0102] Please continue to refer to FIG. 2, the radio frequency transmission module 1 includes an outer conductor 11, an inner conductor 12, a support assembly 13, a limiting piece 14, an access cable 15 and an outgoing cable 16. The outer conductor 11 is provided with a containing space 111, the inner conductor 12 is arranged in the containing space 111, and there is no direct contact between the outer conductor 11 and the inner conductor 12. Along the first direction Z, the inner conductor 12 and the outer conductor 11 are fixedly connected through the support assembly 13 and the limiting piece 14 (the specific description of how the support assembly 13 and the limiting piece 14 fix the inner conductor 12 and the outer conductor 11 is described below).

[0103] Please continue to refer to FIG. 2, along the second direction Y, the two ends of the outer conductor 11 are respectively provided with a first support part 112 and a second support part 113, and the partial structure of the access cable 15 is lapped on the first support part 112 and extends into the accommodation space 111 to be connected with one end of the inner conductor 12, and the partial structure of the outgoing cable 16 is lapped on the second support part 113 and extends into the accommodation space 111 to be connected with the other end of the inner conductor 12. Among them, the first support part 112 and the second support part 113 are bent in the direction of the inner conductor 12 at both ends of the outer conductor 11, and the first support part 112 and the second support part 113 play a supporting role for the access cable 15 and the outgoing cable 16.

[0104] Please continue to refer to FIG. 3, the inner conductor 12 is arranged in the accommodation space 111 of the outer conductor 11. At least one of the outer conductor 11 and the inner conductor 12 is a non-circular cross section along the third direction X. In some embodiments, the inner conductor 12 can be composed of a composite metal layer 121, and the outer conductor 11 can be composed of a single-layer metal layer. The composite metal layer 121 includes a base layer 121a and a transmission surface layer 121b, the transmission surface layer 121b is used for signal transmission, and the base layer 121a is used for supporting the transmission surface layer 121b, and the transmission surface layer 121b is arranged on at least one side of the base layer 121a along the first direction Z. Among them, the electrical conductivity of the transmission surface layer 121b is σ1, and the electrical conductivity of the base layer 121a is σ2, and σ1 and σ2 satisfy: σ1>σ2. That is, the electrical conductivity of the transmission surface layer 121b is higher than that of the base layer 121a, by adopting the transmission surface layer 121b with high electrical conductivity, the electrical conductivity of the transmission surface layer 121b is ensured, and the loss in the signal transmission process is reduced, and at the same time, the base layer 121a with low electrical conductivity is adopted, and the cost is reduced.

[0105] Alternatively, in some embodiments, the outer conductor 11 can be composed of a composite metal layer 121, and the inner conductor 12 can be composed of a single-layer metal layer.

[0106] Further alternatively, in some embodiments, the inner conductor 12 and the outer conductor 11 can be composed of a composite metal layer 121.

[0107] In some embodiments, the transmission surface layer 121b and the base layer 121a are fixedly connected by pressure bonding process, rolling and covering forming process, etc. Specifically, under the action of pressure, atomic bonding is formed between the metal of the transmission surface layer 121b and the metal of the base layer 121a, so as to realize the fixation of the transmission surface layer 121b and the base layer 121a. Compared with the above embodiment in which the metal layer is formed on the surface of the strip line by electroplating (electroplating silver), the present embodiment avoids the pollution caused by electroplating, effectively reduces the environmental pollution caused by the production of the radio frequency transmission module 1, and realizes low-carbon production.

[0108] In some embodiments, the transmission surface layer 121b can be made of a metal material with high conductivity, such as silver, copper, etc. The base layer 121a can be made of a metal material with low cost and good support effect, such as aluminum, steel, stainless steel, etc.

[0109] As shown in FIG. 4, which is an enlarged view of part A in FIG. 2, the outer conductor 11, the inner conductor 12, and the support assembly 13 are included. The support assembly 13 supports the inner conductor 12 in the accommodation space 111 of the outer conductor 11, so that the inner conductor 12 is not in direct contact with the outer conductor 11.

[0110] Specifically, as shown in FIG. 5, which is a cross-sectional view of FIG. 4 along the width direction X of the radio frequency transmission module 1, the outer conductor 11, the inner conductor 12, and the support assembly 13 are included. The support assembly 13 includes a first support piece 131 and a second support piece 132. The first support piece 131 is provided with a clamping portion 131a, the second support piece 132 is provided with a matching portion 132a, and the inner conductor 12 is provided with a first through hole 122. When the first support piece 131, the second support piece 132, and the inner conductor 12 are connected, the clamping portion 131a can pass through the first through hole 122 and be clamped with the matching portion 132a, so as to realize the mutual buckling of the first support piece 131 and the second support piece 132, and fix the inner conductor 12 at the middle position of the outer conductor 11.

[0111] Among them, the first support piece 131 and the second support piece 132 have a certain elasticity, so that when the first support piece 131, the second support piece 132, and the inner conductor 12 are connected and placed in the accommodation space 111, the first support piece 131 and the second support piece 132 can abut against the inner wall of the accommodation space 111 along the first direction Z, thereby limiting the movement of the inner conductor 12 along the first direction Z in the accommodation space 111, and ensuring the stability of the radio frequency transmission module 1.

[0112] More specifically, as shown in FIG. 6, which is an enlarged view of part B in FIG. 5, the clamping portion 131a is provided with a first clamping protrusion 131a1, and the matching portion 132a can be a hole structure. The diameter of the first clamping protrusion 131a1 is slightly larger than the diameter of the matching portion 132a, and the second support piece 132 is further provided with an avoidance groove 132b connected with the matching portion 132a. When part of the structure of the clamping portion 131a passes through the first through hole 122 and the matching portion 132a and extends into the avoidance groove 132b, the first clamping protrusion 131a1 can abut against the outer peripheral part of the matching portion 132a, so as to limit the disengagement of the clamping portion 131a and the matching portion 132a, ensure the connection stability of the first support piece 131, the second support piece 132, and the inner conductor 12, and further realize the support of the inner conductor 12 in the accommodation space 111.

[0113] As shown in FIG. 7, it is an enlarged view of part C in FIG. 2, including the outer conductor 11, the inner conductor 12 and the limiting member 14. The limiting member 14 connects the inner conductor 12 and the outer conductor 11, and is used to limit the movement of the inner conductor 12 in the second direction Y in the accommodating space 111, so as to reduce the risk of the inner conductor 12 being disconnected from the access cable 15 and the outgoing cable 16 on both sides under the action of external force, and ensure the stable performance and good index consistency of the entire radio frequency transmission module 1.

[0114] Specifically, as shown in FIG. 8, it is a cross-sectional view of FIG. 7 along the width direction X of the radio frequency transmission module 1, including the outer conductor 11, the inner conductor 12 and the limiting member 14. The inner conductor 12 is further provided with a second through hole 123, and the outer conductor 11 is provided with a first limiting hole 114 and a second limiting hole 115. Along the first direction Z, the first limiting hole 114 and the second limiting hole 115 are located on both sides of the second through hole 123. Please refer to FIGS. 7 and 8 in combination, when the limiting member 14 connects the inner conductor 12 and the outer conductor 11, part of the structure of the limiting member 14 can pass through the first limiting hole 114, the second through hole 123 and the second limiting hole 115 to cooperate, so as to limit the movement of the inner conductor 12 in the second direction Y in the accommodating space 111.

[0115] Please continue to refer to FIGS. 7 and 8, the limiting member 14 is further provided with a first limiting part 141 and a second limiting part 142. The first limiting part 141 is used to limit the limiting member 14 from being separated from the outer conductor 11, and the second limiting part 142 is used to limit the rotation of the limiting member 14.

[0116] As shown in FIG. 9, it is a top view of the outer conductor 11, which is provided with a first limiting hole 114 and a third limiting hole 117. The third limiting hole 117 is arranged close to the first limiting hole 114. As shown in FIG. 10, it is an enlarged view of part D in FIG. 9, the outer conductor 11 is further provided with an avoiding hole 116 which is in communication with the first limiting hole 114.

[0117] Please refer to FIGS. 7 to 10 in combination, when part of the structure of the limiting member 14 enters the accommodating space 111 through the first limiting hole 114, the first limiting part 141 can enter the accommodating space 111 through the avoiding hole 116. After the first limiting part 141 enters the accommodating space 111 through the avoiding hole 116, the limiting member 14 is rotated, and the first limiting part 141 is rotated to abut against the outer circumferential part of the first limiting hole 114. That is, the first limiting part 141 is arranged staggered with the avoiding hole 116, so as to limit the first limiting part 141 from being separated from the accommodating space 111 through the avoiding hole 116, and further limit the limiting member 14 from being separated from the outer conductor 11. After the first limiting part 141 is rotated, at this time, the second limiting part 142 is rotated to the upper end of the third limiting hole 117, and the second limiting part 142 is inserted into the third limiting hole 117, so as to limit the limiting member 14 from being further rotated, and further limit the limiting member 14 from being separated from the outer conductor 11 and the inner conductor 12.

[0118] The following specifically describes the structure that the transmission surface layer 121b and the base layer 121a can form in the radio frequency transmission module 1 shown in FIG. 2.

[0119] As shown in FIG. 11, a cross-sectional view of the composite metal layer 121 in an embodiment is shown, which includes the transmission surface layer 121b and the base layer 121a. The transmission surface layer 121b includes the upper surface layer 121b1 and the lower surface layer 121b2. Along the first direction Z, the upper surface layer 121b1 is connected to the upper side of the base layer 121a, and the lower surface layer 121b2 is connected to the lower side of the base layer 121a. Along the first direction Z, the projection of the upper surface layer 121b1 and the lower surface layer 121b2 on the base layer 121a completely covers the base layer 121a.

[0120] As shown in FIG. 11, a cross-sectional view of the composite metal layer 121 in an embodiment is shown, which includes the transmission surface layer 121b and the base layer 121a. The transmission surface layer 121b includes the upper surface layer 121b1 and the lower surface layer 121b2. Along the first direction Z, the upper surface layer 121b1 is connected to the upper side of the base layer 121a, and the lower surface layer 121b2 is connected to the lower side of the base layer 121a. Along the first direction Z, the projection of the upper surface layer 121b1 and the lower surface layer 121b2 on the base layer 121a completely covers the base layer 121a.

[0121] As shown in FIG. 12, a cross-sectional view of the composite metal layer 121 in an embodiment is shown, which includes the transmission surface layer 121b and the base layer 121a. The transmission surface layer 121b includes the upper surface layer 121b1 and the lower surface layer 121b2. Along the first direction Z, the upper surface layer 121b1 is connected to the upper side of the base layer 121a, and the lower surface layer 121b2 is connected to the lower side of the base layer 121a. Along the first direction Z, the projection of the upper surface layer 121b1 and the lower surface layer 121b2 on the base layer 121a does not completely cover the base layer 121a.

[0122] As shown in FIG. 11, a cross-sectional view of the composite metal layer 121 in an embodiment is shown, which includes the transmission surface layer 121b and the base layer 121a. The transmission surface layer 121b includes the upper surface layer 121b1 and the lower surface layer 121b2. Along the first direction Z, the upper surface layer 121b1 is connected to the upper side of the base layer 121a, and the lower surface layer 121b2 is connected to the lower side of the base layer 121a. Along the first direction Z, the projection of the upper surface layer 121b1 and the lower surface layer 121b2 on the base layer 121a completely covers the base layer 121a.

[0123] Wherein, as shown in Figure 13, is a cross-sectional view of the inner conductor 12 and the outer conductor 11 along the width direction X of the radio frequency transmission module 1 when the composite metal layer 121 structure in Figure 11 is adopted. As shown in Figure 14, is a schematic view of the first support 131 and the second support 132 supporting the inner conductor 12 arranged in the accommodation space 111 when the composite metal layer 121 structure in Figure 11 is adopted. As shown in Figure 15, is a schematic view of the limiting member 14 connecting the inner conductor 12 and the outer conductor 11 when the composite metal layer 121 structure in Figure 11 is adopted.

[0124] Alternatively, when the projection of the upper surface layer 121b1 and the lower surface layer 121b2 on the base layer 121a does not completely cover the base layer 121a, the upper surface layer 121b1 and the lower surface layer 121b2 can be divided into multiple parts with intervals between each part, forming a structure in which the projection of the upper surface layer 121b1 and the lower surface layer 121b2 on the base layer 121a does not completely cover the base layer 121a, as shown in Figure 15.

[0125] Wherein, as shown in Figure 17, is a cross-sectional view of the inner conductor 12 and the outer conductor 11 along the width direction X of the radio frequency transmission module 1 when the composite metal layer 121 structure in Figure 16 is adopted. As shown in Figure 18, is a schematic view of the first support 131 and the second support 132 supporting the inner conductor 12 arranged in the accommodation space 111 when the composite metal layer 121 structure in Figure 16 is adopted. As shown in Figure 19, is a schematic view of the limiting member 14 connecting the inner conductor 12 and the outer conductor 11 when the composite metal layer 121 structure in Figure 16 is adopted.

[0126] As shown in Figure 20, is a cross-sectional view of the composite metal layer 121 in an embodiment, the composite metal layer 121 includes a transmission surface layer 121b and a base layer 121a. The transmission surface layer 121b includes an upper surface layer 121b1 and a lower surface layer 121b2, along the first direction Z, the upper surface layer 121b1 is connected to the upper side of the base layer 121a, and the lower surface layer 121b2 is connected to the lower side of the base layer 121a. Along the first direction Z, one of the upper surface layer 121b1 and the lower surface layer 121b2 does not completely cover the base layer 121a in the projection of the base layer 121a.

[0127] For example, the upper surface layer 121b1 can not completely cover the base layer 121a in the projection of the base layer 121a, and the lower surface layer 121b2 can completely cover the base layer 121a in the projection of the base layer 121a (as shown in Figure 20). Alternatively, the upper surface layer 121b1 can completely cover the base layer 121a in the projection of the base layer 121a, and the lower surface layer 121b2 can not completely cover the base layer 121a in the projection of the base layer 121a (not shown in the figure).

[0128] It should be noted that the structure in which one of the upper surface layer 121b1 and the lower surface layer 121b2 does not completely cover the base layer 121a in the projection plane of the base layer 121a can adopt a structure similar to that in FIG. 12, that in FIG. 16, or other structures, which are not specifically limited in the present embodiment.

[0129] When one of the upper surface layer 121b1 and the lower surface layer 121b2 does not completely cover the base layer 121a in the projection plane of the base layer 121a, the cross-sectional view of the inner conductor 12 and the outer conductor 11 along the width direction X of the radio frequency transmission module 1 can refer to FIG. 3, FIG. 13, and FIG. 17 above, the schematic view of the first support 131 and the second support 132 supporting the inner conductor 12 arranged in the accommodation space 111 can refer to FIG. 5, FIG. 14, and FIG. 18 above, and the schematic view of the limiting member 14 connecting the inner conductor 12 and the outer conductor 11 can refer to FIG. 8, FIG. 15, and FIG. 19 above.

[0130] As shown in FIG. 21, a cross-sectional schematic view of a composite metal layer 121 in an embodiment includes a transmission surface layer 121b and a base layer 121a. The transmission surface layer 121b is arranged on one side of the base layer 121a along the first direction Z, and the transmission surface layer 121b completely covers the base layer 121a in the projection plane of the base layer 121a.

[0131] When the transmission surface layer 121b is arranged on one side of the base layer 121a along the first direction Z, and the transmission surface layer 121b completely covers the base layer 121a in the projection plane of the base layer 121a, a cross-sectional schematic view of the inner conductor 12 and the outer conductor 11 along the width direction X of the radio frequency transmission module 1 is shown in FIG. 22. When the transmission surface layer 121b is arranged on one side of the base layer 121a along the first direction Z, and the transmission surface layer 121b completely covers the base layer 121a in the projection plane of the base layer 121a, a schematic view of the first support 131 and the second support 132 supporting the inner conductor 12 arranged in the accommodation space 111 is shown in FIG. 23. When the transmission surface layer 121b is arranged on one side of the base layer 121a along the first direction Z, and the transmission surface layer 121b completely covers the base layer 121a in the projection plane of the base layer 121a, a schematic view of the limiting member 14 connecting the inner conductor 12 and the outer conductor 11 is shown in FIG. 24.

[0132] For example, the transmission surface layer 121b can be arranged on the upper side of the base layer 121a, as shown in FIG. 25. Alternatively, the transmission surface layer 121b can be arranged on the lower side of the base layer 121a, as shown in FIG. 21.

[0133] As shown in FIG. 26, a cross-sectional view of the composite metal layer 121 in an embodiment is shown. The composite metal layer 121 includes a transmission surface layer 121b and a base layer 121a. The transmission surface layer 121b is disposed on one side of the base layer 121a along the first direction Z, and the projection of the transmission surface layer 121b on the base layer 121a does not completely cover the base layer 121a.

[0134] For example, the transmission surface layer 121b can be disposed on the upper side of the base layer 121a, and the projection of the transmission surface layer 121b on the base layer 121a does not completely cover the base layer 121a (as shown in FIG. 26). Alternatively, the transmission surface layer 121b can be disposed on the lower side of the base layer 121a, and the projection of the transmission surface layer 121b on the base layer 121a does not completely cover the base layer 121a (not shown in the figure).

[0135] In the case where the transmission surface layer 121b is disposed on one side of the base layer 121a along the first direction Z, and the projection of the transmission surface layer 121b on the base layer 121a does not completely cover the base layer 121a, the cross-sectional view of the inner conductor 12 and the outer conductor 11 along the width direction X of the radio frequency transmission module 1 can refer to FIG. 22, the schematic view of the first support 131 and the second support 132 supporting the inner conductor 12 disposed in the accommodation space 111 can refer to FIG. 23, and the schematic view of the limiting member 14 connecting the inner conductor 12 and the outer conductor 11 can refer to FIG. 24.

[0136] In the above, the structure of the transmission surface layer 121b formed on the base layer 121a can be variously configured, and can be specifically configured according to actual conditions. For example, for an application scenario with high requirements for signal transmission efficiency, the composite metal layer 121 structure shown in FIG. 11 can be selected, and for an application scenario with low requirements for signal transmission efficiency, the composite metal layer 121 structures shown in FIGS. 12, 13, 20, 21, 25, and 26 can be selected. In the embodiments where the transmission surface layer 121b is disposed on one side of the base layer 121a, and the projection of the transmission surface layer 121b on the base layer 121a does not completely cover the base layer 121a, the use cost of the transmission surface layer 121b can be effectively reduced.

[0137] As shown in FIG. 27, a schematic view of the radio frequency transmission module 1 in an embodiment is shown. The radio frequency transmission module 1 includes an outer conductor 11, an inner conductor 12, a third support 17, an access cable 15, and an outgoing cable 16. The inner conductor 12 is fixedly connected to the outer conductor 11 through the third support 17.

[0138] In the second direction Y, the outer conductor 11 is provided with a first support portion 112 and a second support portion 113 at two ends thereof, respectively, and a part of the access cable 15 is lapped on the first support portion 112 and extends into the accommodation space 111 to be connected to one end of the inner conductor 12, and a part of the outgoing cable 16 is lapped on the second support portion 113 and extends into the accommodation space 111 to be connected to the other end of the inner conductor 12. The first support portion 112 and the second support portion 113 are bent in the direction of the inner conductor 12 at the two ends of the outer conductor 11, and the first support portion 112 and the second support portion 113 support the access cable 15 and the outgoing cable 16.

[0139] As shown in FIG. 28, which is a cross-sectional view of the radio frequency transmission module 1 shown in FIG. 27, in the first direction Z, the inner conductor 12 is arranged above the outer conductor 11. At least one of the outer conductor 11 and the inner conductor 12 has a non-circular cross section in the third direction X. In some embodiments, the inner conductor 12 can be composed of a composite metal layer 121, and the outer conductor 11 can be composed of a single-layer metal layer. The composite metal layer 121 includes a base layer 121a and a transmission surface layer 121b, the transmission surface layer 121b is used for signal transmission, and the base layer 121a is used to support the transmission surface layer 121b, and the transmission surface layer 121b is arranged on at least one side of the base layer 121a in the first direction Z. The electrical conductivity of the transmission surface layer 121b is σ1, and the electrical conductivity of the base layer 121a is σ2, and σ1 and σ2 satisfy: σ1>σ2. That is, the electrical conductivity of the transmission surface layer 121b is higher than that of the base layer, and by using a high-conductivity transmission surface layer 121b, the electrical conductivity of the transmission surface layer 121b is ensured, and the loss in the signal transmission process is reduced, and at the same time, a low-conductivity base layer 121a is used to reduce the cost.

[0140] Alternatively, in some embodiments, the outer conductor 11 can be composed of a composite metal layer 121, and the inner conductor 12 can be composed of a single-layer metal layer.

[0141] Alternatively, in some embodiments, the inner conductor 12 and the outer conductor 11 can be composed of a composite metal layer 121.

[0142] In some embodiments, the transmission surface layer 121b and the base layer 121a are fixedly connected by pressure bonding process, rolling and covering forming process, etc. Specifically, under the action of pressure, atomic bonding is formed between the metals of the transmission surface layer 121b and the base layer 121a, thereby realizing the fixation of the transmission surface layer 121b and the base layer 121a. Compared with the above-mentioned embodiment of forming a metal layer on the surface of the base material by electroplating (electroplating silver), this embodiment avoids the pollution caused by electroplating in the electroplating process, effectively reduces the environmental pollution caused by the production of the radio frequency transmission module 1, and realizes low-carbon production.

[0143] In some embodiments, the transmission surface layer 121b can be made of silver, copper or other materials with high conductivity. The base layer 121a can be made of aluminum, steel, stainless steel or other materials with low cost and good support effect.

[0144] Fig. 29 is an enlarged view of part E in Fig. 27, including the outer conductor 11, the inner conductor 12 and the third support 17 connecting the outer conductor 11 and the inner conductor 12. The third support 17 can limit the movement of the inner conductor 12 relative to the outer conductor 11 and also support the inner conductor 12, so that there is no direct contact between the inner conductor 12 and the outer conductor 11.

[0145] Fig. 30 is a cross-sectional view of Fig. 29 along the width direction X of the radio frequency transmission module 1, including the outer conductor 11, the inner conductor 12 and the third support 17. In the first direction Z, one end of the third support 17 is provided with a first clamping portion 171, and the other end is provided with a second clamping portion 172. The inner conductor 12 is provided with a first clamping hole 124, and the outer conductor 11 is provided with a second clamping hole 118.

[0146] Referring back to Fig. 30, the third support 17 has a certain elasticity. When the third support 17 connects the outer conductor 11 and the inner conductor 12, the first clamping portion 171 can pass through the first clamping hole 124 and be clamped with the outer peripheral part of the first clamping portion 171. The second clamping portion 172 can pass through the second clamping hole 118 and be clamped with the outer peripheral part of the second clamping hole 118. In this embodiment, the relative position of the outer conductor 11 and the inner conductor 12 is constrained by the third support 17, so that the performance of the entire radio frequency transmission module 1 is stable, and the index consistency is good.

[0147] Specifically, referring back to Fig. 30, the first clamping portion 171 includes a second clamping protrusion 171a, and the second clamping portion 172 includes a third clamping protrusion 172a. The diameter of the second clamping protrusion 171a is slightly larger than the diameter of the first clamping hole 124. After part of the structure of the first clamping portion 171 passes through the first clamping hole 124, the second clamping protrusion 171a can abut the outer peripheral part of the first clamping hole 124 to limit the first clamping portion 171 from coming out of the first clamping hole 124, thereby ensuring the connection stability of the third support 17 and the inner conductor 12. The diameter of the third clamping protrusion 172a is slightly larger than the diameter of the second clamping hole 118. After part of the structure of the second clamping portion 172 passes through the second clamping hole 118, the third clamping protrusion 172a can abut the outer peripheral part of the second clamping hole 118 to limit the second clamping portion 172 from coming out of the second clamping hole 118, thereby ensuring the connection stability of the third support 17 and the outer conductor 11.

[0148] It should be noted that the structure formed by the transmission surface layer 121b and the base layer 121a in the radio frequency transmission module 1 shown in FIG. 27 can be the structure shown in FIGS. 11, 12, 16, 20, 21, 25, and 26, and the specific configuration can be set according to actual conditions, which will not be described herein again.

[0149] In some embodiments, the composite metal layer can also have a curved structure, for example, the composite metal layer can be L-shaped, U-shaped, wavy, etc., which is not specifically limited in the present embodiment.

[0150] Exemplarily, FIG. 31 shows a cross-sectional view of the radio frequency transmission module when the inner conductor 12 is U-shaped, and the specific content can be referred to the description of the embodiment shown in FIG. 28, except that the inner conductor 12 is U-shaped.

[0151] FIG. 32 shows the connection mode of the inner conductor 12 and the outer conductor 11 when the inner conductor 12 is U-shaped, and the specific content can be referred to the description of the embodiment shown in FIG. 30, except that the inner conductor 12 is U-shaped.

[0152] It should be noted that in the present embodiment, the transmission surface layer 121b is arranged on at least one side of the base layer 121a along the first direction Z, and the transmission surface layer 121b completely covers the base layer 121a along the first direction Z, or the transmission surface layer 121b on at least one side does not completely cover the base layer 121a along the first direction Z, which can be referred to the structures shown in FIGS. 11, 12, 16, 20, 21, 25, and 26. The specific configuration can be set according to actual conditions, which will not be described herein again.

[0153] The first direction Z refers to the direction of the connection between the transmission surface layer 121b and the base layer 121a, which includes not only the thickness direction of the radio frequency transmission module 1, but also the length direction of the radio frequency transmission module 1.

[0154] FIG. 33 shows a cross-sectional view of the radio frequency transmission module 1 when the inner conductor 12 is L-shaped, and the specific content can be referred to the description of the embodiment shown in FIG. 3, except that the inner conductor 12 is L-shaped. When the inner conductor 12 is L-shaped, the connection mode of the inner conductor 12 and the outer conductor 11 can be referred to the embodiment shown in FIG. 5, which will not be described herein again. It should be noted that the transmission surface layer 121b is arranged on at least one side of the base layer 121a along the first direction Z, and the transmission surface layer 121b completely covers the base layer 121a along the first direction Z, or the transmission surface layer 121b on at least one side does not completely cover the base layer 121a along the first direction Z, which can be referred to the structures shown in FIGS. 11, 12, 16, 20, 21, 25, and 26. The specific configuration can be set according to actual conditions, which will not be described herein again.

[0155] Wherein, the first direction Z refers to the direction in which the transmission surface layer 121b is connected with the base layer 121a, and not only includes the thickness direction of the radio frequency transmission module 1, but also includes the length direction of the radio frequency transmission module 1.

[0156] The same or similar parts among various embodiments in the specification can be referred to each other. Especially, for the device embodiments and the terminal embodiments, since they are basically similar to the method embodiments, the description is relatively simple.

[0157] The above only describes specific implementation ways of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited to this. Any change or replacement within the technical scope disclosed by the embodiments of the present application should be covered in the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A radio frequency transmission module, characterized by, The radio frequency transmission module comprises: an outer conductor; an inner conductor, at least one of the outer conductor and the inner conductor comprising a composite metal layer; the composite metal layer comprises a base layer and a transmission surface layer, the transmission surface layer being arranged on at least one side of the base layer along a first direction, and the transmission surface layer being press-fitted with the base layer; the conductivity of the transmission surface layer is σ1, and the conductivity of the base layer is σ2, σ1 and σ2 satisfy: σ1>σ2.

2. The radio frequency transmission module of claim 1, wherein, The transmission surface layer comprises an upper surface layer and a lower surface layer; along the first direction, the upper surface layer is connected to the upper side of the base layer, and the lower surface layer is connected to the lower side of the base layer; along the first direction, the projection of the upper surface layer and the lower surface layer on the base layer completely covers the base layer.

3. The radio frequency transmission module of claim 1, wherein, The transmission surface layer comprises an upper surface layer and a lower surface layer; along the first direction, the upper surface layer is connected to the upper side of the base layer, and the lower surface layer is connected to the lower side of the base layer; along the first direction, at least one of the upper surface layer and the lower surface layer does not completely cover the base layer in the projection of the base layer.

4. The radio frequency transmission module of claim 1, wherein, The transmission surface layer is arranged on one side of the base layer along the first direction, and the projection of the transmission surface layer on the base layer completely covers the base layer.

5. The radio frequency transmission module of claim 1, wherein, The transmission surface layer is arranged on one side of the base layer along the first direction, and the projection of the transmission surface layer on the base layer does not completely cover the base layer.

6. The radio frequency transmission module of any one of claims 1 to 5, wherein, The outer conductor is provided with a containing space; The radio frequency transmission module further comprises a support assembly, and the inner conductor is arranged in the containing space through the support assembly.

7. The radio frequency transmission module of claim 6, wherein, The support assembly comprises a first support and a second support; The inner conductor is provided with a first through hole, the first support is provided with a clamping portion, the second support is provided with a matching portion, and the clamping portion can be clamped with the matching portion through the first through hole; along the first direction, the first support and the second support are in abutment with the inner wall of the containing space.

8. The radio frequency transmission module of claim 6, wherein, The radio frequency transmission module further comprises a limiting piece, and the inner conductor is further provided with a second through hole, and the outer conductor is provided with a first limiting hole and a second limiting hole; Part of the structure of the limiting piece can pass through the first limiting hole, the second through hole and the second limiting hole to match, so as to limit the movement of the inner conductor in the containing space along the second direction.

9. The radio frequency transmission module of claim 8, wherein, The limiting piece is further provided with a first limiting portion, and the outer conductor is further provided with a avoiding hole communicating with the first limiting hole; The first limiting portion can enter the containing space through the avoiding hole, and can be rotated to abut against the outer circumferential portion of the first limiting hole to limit the limiting piece from being separated from the outer conductor.

10. The radio frequency transmission module of claim 9, wherein, The limiting piece is further provided with a second limiting portion, and the outer conductor is further provided with a third limiting hole, and the third limiting hole is arranged close to the first limiting hole; After the first limiting portion is completed, the second limiting portion can be matched with the third limiting hole to limit the continuous rotation of the limiting piece.

11. The radio frequency transmission module of any one of claims 1 to 5, wherein, along the first direction, the inner conductor is arranged above the outer conductor; The radio frequency transmission module further comprises a third support member connecting the inner conductor and the outer conductor.

12. The radio frequency transmission module of claim 11, wherein, In the first direction, one end of the third support member is provided with a first clamping portion, and the other end is provided with a second clamping portion. The inner conductor is provided with a first clamping hole, and the outer conductor is provided with a second clamping hole. The first clamping portion can pass through the first clamping hole and be clamped with the outer peripheral portion of the first clamping portion, and the second clamping portion can pass through the second clamping hole and be clamped with the outer peripheral portion of the second clamping hole.

13. The radio frequency transmission module of any one of claims 1 to 12, wherein, The radio frequency transmission module further comprises an access cable and an outgoing cable. In the second direction, one end of the outer conductor is provided with a first support portion, and the other end is provided with a second support portion. Part of the structure of the access cable can be placed in the first support portion and connected with one end of the inner conductor, and part of the structure of the outgoing cable can be placed in the second support portion and connected with the other end of the inner conductor.

14. The radio frequency transmission module of any one of claims 1 to 12, wherein, The material of the transmission surface layer is one of silver and copper. The material of the base layer is one of aluminum, steel and stainless steel.

15. The radio frequency transmission module of claim 14, wherein, The transmission surface layer and the base layer are directly pressed and fixed, and under the action of pressure, the metal of the transmission surface layer and the metal of the base layer form atomic bonding.

16. The radio frequency transmission module of any one of claims 1 to 12, wherein, In the second direction, the cross section of the inner conductor is a non-circular cross section.

17. A communication device, comprising: The radio frequency transmission module comprises any one of claims 1 to 16. The radio frequency transmission module comprises any one of claims 1 to 16.

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