TDD cable-free feed network for base station antenna

Abstract

Disclosed in the present invention is a TDD cable-free feed network for a base station antenna, which feed network comprises a housing, wherein partition plates are arranged at intervals in the housing in the direction of width to form a plurality of inner cavities, and a phase-shifting assembly is assembled inside each inner cavity; adjacent phase-shifting assemblies are grouped in pairs; the top surface of the housing located in the middle of each group of phase-shifting assemblies extends upwards to form a protruding rib, and at least one radiating element is mounted on the protruding rib; and a feed network in the phase-shifting assembly located in each inner cavity is bent upwards to form pins, and the pins are directly connected to a corresponding upper radiating element. Thus, cable-free direct connection between a phase-shifting assembly and a radiating element in a base station antenna is realized, thereby significantly reducing cable-induced damage and helping ensure antenna gain; in addition, the TDD cable-free feed network has a simple structure, is easy to assemble and has good practicality.

Description

A TDD cable-free feeding network for a base station antenna TECHNICAL FIELD

[0001] The present application relates to the technical field of base station antennas, and particularly relates to a TDD cable-free feeding network for a base station antenna. BACKGROUND

[0002] In the prior art, the phase shifter in the base station antenna is usually arranged in a large chamber, and a cable is usually used to connect the phase shifter interface and the radiation unit, which will cause loss and affect the antenna gain, and the use of a thicker cable will also increase the cost.

[0003] On the other hand, in the existing base station antenna, the driving unit of the phase shifter is usually arranged on the same side as the radiation unit, and the phase shifter is easily resonated due to the assembly space, which will significantly reduce the stability of the device operation, increase the loss, and even affect the antenna efficiency and safety.

[0004] SUMMARY

[0005] To solve the above problems, the present application provides a TDD cable-free feeding network for a base station antenna, which realizes the direct connection of the phase shift assembly and the radiation unit in the base station antenna without a cable, greatly reduces the damage caused by the cable, helps to ensure the antenna gain, and has the advantages of simple structure, easy assembly and good practicability.

[0006] The technical scheme adopted by the present application is as follows:

[0007] The TDD cable-free feeding network for a base station antenna comprises a shell, a plurality of inner cavities are arranged in the shell along the width direction and are separated by partitions, and a phase shift assembly is arranged in each inner cavity; two adjacent phase shift assemblies are grouped together, a convex rib is formed by extending the top surface of the shell upward at the middle part of the phase shift assembly in the group, and at least one radiation unit is mounted on the convex rib; the feeding network in the phase shift assembly arranged in the inner cavity is bent upward to form a pin, and the pin is directly connected with the radiation unit above.

[0008] As a further improvement of the above technical scheme:

[0009] A notch is formed in the convex rib, and the notch is communicated with the inner cavity below; the radiation unit is limitingly arranged in the notch, and the pin is connected with the radiation unit at the notch.

[0010] The phase shift assembly comprises an adapter rod arranged along the partition, and a moving medium is mounted on the side surface of the adapter rod; the inner top surface and the inner bottom surface of the inner cavity at the partition are respectively recessed to form a limiting space, the adapter rod and the moving medium are arranged in the limiting space, so that the adapter rod drives the moving medium to move along the partition.

[0011] The phase-shifting assembly further comprises a feed network supported and fixed inside the inner cavity by a support, the support being made of low-dielectric plastic material; mobile mediums are arranged on both sides of the feed network outside the support, and the mobile mediums move relative to the feed network to perform phase shifting.

[0012] A plurality of long grooves are formed through the bottom surface of the shell, the long grooves are arranged along the moving direction of the connecting rods, connecting pieces are slidingly installed on the shell at the long grooves, the bottom ends of the connecting pieces extend into the inner cavity through the long grooves and are fitted with the corresponding connecting rods; a cross rod is jointly installed on the plurality of connecting pieces, the cross rod is arranged along the width direction of the shell, and the cross rod is driven by the power transmission mechanism to move along the length direction of the long grooves.

[0013] The power transmission mechanism is installed on the bottom surface of the shell through a support, the cross rod is arranged between the shell and the support, and a pull rod is vertically installed at the middle portion of the cross rod; the power transmission mechanism comprises a rotating power source installed on the support, a screw rod is connected and installed at the output end of the rotating power source, and the screw rod is rotatably supported on the support through bearings at both ends; a screw seat is spirally fitted on the screw rod, one end of the moving rod is fixedly installed on the screw seat, and the other end of the moving rod is installed on the pull rod through a connecting frame.

[0014] The bottom surface of the shell is downwardly extended along the width direction to form a T-shaped rib, the long grooves are formed in the T-shaped rib, and the connecting pieces are slidingly fitted on the T-shaped rib.

[0015] The connecting piece comprises a support plate, the bottom surface of the support plate is downwardly extended to form a support arm, the support arms are arranged on both sides of the T-shaped rib, the support arms are oppositely extended to form protrusions, and the horizontal portion of the T-shaped rib is slidingly fitted between the protrusions and the bottom surface of the support plate; the support arm extends into the inner cavity through the long groove, the end portions of the support arms are oppositely extended to form buckles, and the buckles are fixedly connected with the connecting rods.

[0016] The edge of the support plate is upwardly extended to form a channel with a cross-shaped structure, the upper portions of the side walls at the ends of the channel are oppositely extended to form buckles; the middle portion of the top surface of the support plate is upwardly extended to form a protruding column, the protruding column comprises a first protruding column and a second protruding column which are arranged along two directions of the channel and are spaced apart from each other, the height of the first protruding column is higher than that of the second protruding column, and the height of the buckle in the same direction as the first protruding column is higher than that of the buckle in the same direction as the second protruding column.

[0017] The shell is an integrally formed extrusion piece, and the number of the inner cavities in the shell is even; the top surface of the shell between the adjacent two groups of phase-shifting assemblies is upwardly extended to form an extension plate, the extension plate and the protruding ribs are arranged at intervals, and the extension plate and the protruding ribs correspond to the corresponding partition plates, respectively.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] The application realizes the direct connection of the phase-shifting assembly and the radiation unit without cable in the base station antenna, greatly reduces the damage caused by the cable, helps to ensure the antenna gain, and has the advantages of simple structure, easy assembly, good practicability, and is especially suitable for antenna arrays with different column spacings.

[0020] The application also has the following advantages:

[0021] By arranging the convex ribs on the top surface of the shell and arranging notches on the convex ribs and in communication with the inner cavities, the radiation unit can be quickly and conveniently installed on the shell, and the direct connection of the radiation unit and the feed network in the inner cavities without cable is effectively ensured.

[0022] The radiation unit is arranged on the top surface of the shell, and the power transmission mechanism of the phase-shifting assembly is arranged on the bottom surface of the shell, so that the driving unit of the phase shifter and the radiation unit are arranged on the two surfaces of the shell respectively, the resonance of the phase-shifting assembly is effectively reduced or even avoided, the stability of the equipment operation is ensured, and the antenna efficiency and safety are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a structural schematic diagram of the application.

[0024] Fig. 2 is a partial enlarged view of A in Fig. 1.

[0025] Fig. 3 is an installation schematic diagram of the radiation unit on the shell in the application.

[0026] Fig. 4 is a schematic diagram of the arrangement of the phase-shifting assembly in the shell in the application.

[0027] Fig. 5 is a structural schematic diagram of the phase-shifting assembly in the application.

[0028] Fig. 6 is a partial enlarged view of B in Fig. 5.

[0029] Fig. 7 is a schematic diagram of the arrangement of the power transmission mechanism on the shell in the application.

[0030] Fig. 8 is a structural schematic diagram of the power transmission mechanism in the application.

[0031] Fig. 9 is a schematic diagram of the arrangement of the pull rod and the cross rod on the shell in the application.

[0032] Fig. 10 is an installation schematic diagram of the connecting piece on the shell in the application.

[0033] Fig. 11 is a structural schematic diagram of the connecting piece in the application.

[0034] Fig. 12 is a structural schematic diagram of the connecting piece in another view in the application.

[0035] Wherein: 1, the shell; 2, radiation unit; 3, power transmission mechanism; 4, pull rod; 5, crossbar; 6, connecting piece; 7, phase shift component;

[0036] 10, inner cavity; 11, extension plate; 12, partition; 13, limiting space; 14, T-shaped rib; 15, convex rib; 16, notch; 17, long slot;

[0037] 31, support; 32, rotating power; 33, spiral seat; 34, moving rod; 35, screw; 36, adapter frame; 37, support;

[0038] 61, support plate; 62, channel; 63, buckle; 64, convex column one; 65, convex column two; 66, arm; 67, convex buckle; 68, convex block;

[0039] 71, adapter rod; 72, moving medium; 73, feed network; 74, support; 75, pin. DETAILED DESCRIPTION

[0040] The specific embodiments of the present application will be described below with reference to the accompanying drawings.

[0041] As shown in FIG. 1 and FIG. 2, a TDD cableless feed network for a base station antenna of the embodiment comprises a shell 1, a plurality of inner cavities 10 are formed by partitioning the shell 1 along the width direction, and a phase shift component 7 is arranged in each inner cavity 10; two adjacent phase shift components 7 form a group, a convex rib 15 is formed on the top surface of the shell 1 at the middle of the group, and at least one radiation unit 2 is installed on the convex rib 15; the feed network 73 in the phase shift component 7 located in the inner cavity 10 is bent upwards to form a pin 75, and the pin 75 is directly connected to the radiation unit 2 above.

[0042] In the embodiment, the phase shift component 7 is arranged in each inner cavity 10 in the shell 1, the radiation unit 2 is arranged on the top surface of the shell 1, the feed network 73 in the phase shift component 7 is bent to form the pin 75 directly connected to the radiation unit 2, and the radiation unit 2 is directly fed by the feed line bending method, thereby realizing the cableless direct connection of the phase shift component 7 and the radiation unit 2 in the base station antenna.

[0043] In the embodiment, a plurality of groups of phase shift components 7 can be arranged in the shell 1 according to actual needs, a plurality of convex ribs 15 can be arranged on the top surface of the shell 1, and a plurality of radiation units 2 can also be installed on a single convex rib 15 to form a radiation unit array.

[0044] TDD is the abbreviation of Time Division Duplex, usually refers to time division duplex two-way communication, which is a wireless communication technology allowing devices to transmit and receive at the same time.

[0045] As shown in Fig. 3, the protruding rib 15 is provided with a notch 16, which is communicated with the inner cavity 10; the radiation unit 2 is limitedly arranged at the notch 16, and the pin 75 is connected with the radiation unit 2 at the notch 16.

[0046] In the embodiment, the protruding rib 15 is arranged on the top surface of the shell 1, and the notch 16, which is communicated with the inner cavity 10, is arranged on the protruding rib 15. The notch 16 not only realizes the quick and convenient installation of the radiation unit 2 on the shell 1, but also effectively guarantees the direct connection of the radiation unit 2 with the feed network 73 in the inner cavity 10 without cables.

[0047] In actual operation, the rivet connection can be additionally arranged between the radiation unit 2 and the shell 1, so as to effectively guarantee the stable installation of the radiation unit 2 at the protruding rib 15 of the shell 1.

[0048] As shown in Figs. 4, 5 and 6, the phase-shifting assembly 7 comprises the connecting rod 71 arranged close to the partition plate 12, and the moving medium 72 is arranged on the side surface of the connecting rod 71; the inner top surface and the inner bottom surface of the inner cavity 10 at the partition plate 12 are respectively recessed to form the limiting space 13, the connecting rod 71 and the moving medium 72 are arranged at the limiting space 13, so as to drive the moving medium 72 to move along the partition plate 12 by the connecting rod 71.

[0049] In the embodiment, the limiting space 13 is arranged in the inner cavity 10, so as to quickly and conveniently realize the reliable installation of the connecting rod 71 and the moving medium 72 relative to the inner cavity 10, and effectively guarantee the phase-shifting movement of the connecting rod 71 and the moving medium 72 relative to the inner cavity 10 in the length direction.

[0050] In the embodiment, according to actual requirements, a plurality of moving media 72 can be arranged at intervals on the side surface of the connecting rod 71.

[0051] In the embodiment, the moving medium 72 can be arranged in a U-shaped structure with an opening facing the feed network 73, the bottom surface of the U-shaped structure of the moving medium 72 is fixed to the side surface of the connecting rod 71, and the U-shaped structure is extended laterally to be jointly limited in the limiting space 13 together with the connecting rod 71.

[0052] The phase-shifting assembly 7 further comprises the feed network 73, which is supported and fixed inside the inner cavity 10 by the support 74, and the support 74 is made of low-dielectric plastic material; the moving media 72 are arranged on both sides of the feed network 73 outside the support 74, the moving media 72 are coupled by partially covering the feed network 73 through the opening, and the moving media 72 are moved relative to the feed network 73 to perform phase-shifting.

[0053] In this embodiment, the support 74 is made of low dielectric plastic material, which can effectively reduce the loss due to its dielectric constant close to air. For example, the support 74 can be made of supercritical microcellular foam material with extremely low dielectric loss, which can effectively support the feed network 73.

[0054] As shown in FIG. 9, a plurality of long grooves 17 are provided on the bottom surface of the shell 1, and the long grooves 17 are arranged along the moving direction of the connecting rods 71. The connecting pieces 6 are slidingly installed on the shell 1 at the long grooves 17, and the bottom ends of the connecting pieces 6 extend into the inner cavity 10 through the long grooves 17 and are matched with the corresponding connecting rods 71. A plurality of connecting pieces 6 are jointly installed with a cross bar 5, which is arranged along the width direction of the shell 1. The cross bar 5 is driven by the power transmission mechanism 3 to move along the length direction of the long grooves 17.

[0055] In this embodiment, the connecting pieces 6 at the long grooves 17 of the shell 1 are provided, which can realize the transmission of the moving power outside the shell 1 to the inner cavity 10 to drive the connecting rods 71 to move.

[0056] In this embodiment, the cross bar 5 is provided, which can be driven by the power transmission mechanism 3 to drive the connecting rods 71 in each phase-shifting assembly 7 to move synchronously.

[0057] As shown in FIG. 7, the power transmission mechanism 3 is installed on the bottom surface of the shell 1 through the support 31. The cross bar 5 is arranged between the shell 1 and the support 31, and the pull rod 4 is vertically installed on the middle part of the cross bar 5.

[0058] In this embodiment, the radiation unit 2 is arranged on the top surface of the shell 1, and the power transmission mechanism 3 of the phase-shifting assembly 7 is arranged on the bottom surface of the shell 1. Therefore, the driving unit and the radiation unit 2 of the phase shifter are arranged on the two surfaces of the shell 1, which can effectively reduce or avoid the resonance of the phase-shifting assembly 7, ensure the stability of the equipment operation, and ensure the antenna efficiency and safety.

[0059] As shown in FIG. 8, the power transmission mechanism 3 includes a rotating power 32 installed on the support 31. The rotating power 32 is connected to the screw rod 35, and the screw rod 35 is rotatably supported on the support 31 through the support 37. The screw seat 33 is spirally arranged on the screw rod 35, and the screw seat 33 is fixedly installed on one end of the moving rod 34. The other end of the moving rod 34 is connected to the pull rod 4 through the connecting frame 36.

[0060] In use, the rotating power 32 works, the screw rod 35 rotates, and the screw seat 33 spirally arranged on the screw rod 35 moves along the length direction of the screw rod 35. The screw seat 33 drives the pull rod 4 to move through the moving rod 34, and the pull rod 4 drives the cross bar 5 to move, so that the cross bar 5 drives each phase-shifting assembly 7 to move.

[0061] In the embodiment, the synchronization phase shift operation of each phase shift assembly 7 can be realized by connecting the pull rod 4 with the cross rod 5 and bridging different arrays via the cross rod 5, which is especially suitable for the antenna array with different column spacings.

[0062] In the embodiment, the cross rod 5 is arranged between the bracket 31 and the shell 1, one end of the pull rod 4 is connected with the cross rod 5, and the other end of the pull rod 4 extends out of the bracket 31 and is connected with the moving rod 34 via the connecting bracket 36, so that the overall structure is compact, ingenious and reasonable.

[0063] The T-shaped rib 14 is formed on the bottom surface of the shell 1 and extends downward along the width direction, and the long groove 17 is formed on the T-shaped rib 14, and the connecting piece 6 is slidingly arranged on the T-shaped rib 14, as shown in FIG. 10.

[0064] In the embodiment, the T-shaped rib 14 provides a guide for the movement of the connecting piece 6, which effectively ensures the reliable and stable movement of the connecting piece 6 and the connecting rod 71 in the phase shift assembly 7.

[0065] As shown in FIGS. 11 and 12, the connecting piece 6 includes a support plate 61, the bottom surface of the support plate 61 extends downward to form a support arm 66, the support arm 66 is arranged on both sides of the T-shaped rib 14, the support arm 66 extends towards each other to form a protruding block 68, the horizontal part of the T-shaped rib 14 is slidingly arranged between the protruding block 68 and the bottom surface of the support plate 61, which realizes the sliding arrangement of the connecting piece 6 relative to the T-shaped rib 14; the support arm 66 extends into the inner cavity 10 through the long groove 17, and the end of the support arm 66 extends towards each other to form a protruding buckle 67, which is buckled and fixed with the connecting rod 71.

[0066] In the embodiment, a hole matched with the protruding buckle 67 can be formed on the connecting rod 71 to realize the quick installation of the connecting piece 6 and the connecting rod 71.

[0067] In the embodiment, the installation and limiting between the connecting piece 6 and the T-shaped rib 14 are realized by the support arm 66 combined with the protruding block 68, and the fixed installation of the connecting piece 6 and the connecting rod 71 in the inner cavity 10 is realized by the support arm 66 combined with the end protruding buckle 67, so that the connecting rod 71 can be stably moved by the connecting piece 6.

[0068] The edge of the support plate 61 extends upwards to form a channel 62 with a cross-shaped structure, and the upper part of the side wall at the end of the channel 62 extends towards each other to form a buckle 63; the top surface of the support plate 61 extends upwards to form a protruding column, which includes a protruding column one 64 and a protruding column two 65 arranged on both sides of the channel 62, the height of the protruding column one 64 is higher than that of the protruding column two 65, and the height of the buckle 63 in the same direction as the protruding column one 64 is higher than that of the buckle 63 in the same direction as the protruding column two 65.

[0069] In the embodiment, the connecting piece 6 accommodates the cross bar 5 or the pull rod 4 via the channel 62, and the cross bar 5 or the pull rod 4 is provided with a hole for accommodating the protruding column to limit the horizontal direction, and the buckle 63 limits the height direction.

[0070] In actual assembly, the cross bar 5 is buckled on the lower protruding column two 65 of each connecting piece 6, and the pull rod 4 is buckled on the higher protruding column one 64 of the corresponding connecting piece 6, so as to realize quick and reliable fixing between the cross bar 5 and the pull rod 4 via the connecting piece 6, and effectively avoid relative deflection between the cross bar 5 and the pull rod 4.

[0071] The shell 1 is an integrally formed extrusion piece, the number of the internal cavities 10 in the shell 1 is even, the top surface of the shell 1 between the adjacent two groups of phase shift assemblies 7 extends upward to form an extension plate 11, the extension plate 11 is arranged in a spaced manner with the protruding ribs 15, and the extension plate 11 and the protruding ribs 15 correspond to the corresponding partition plates 12, respectively.

[0072] In the embodiment, the extension plate 11 divides to form a space for mounting the radiation unit 2.

[0073] The application is based on the cavity phase shifter, a cavity is added on the shell 1 to form the main feeder ground, effectively simplifies the overall structure, and facilitates overall layout and installation.

[0074] The feed network 73 in the application can be formed by stamping or etching sheet metal.

[0075] The application realizes direct connection of the phase shift assembly and the radiation unit in the base station antenna without cable, greatly reduces damage caused by the cable, helps to ensure the antenna gain, and has the advantages of simple structure, easy assembly, good practicability, and is especially suitable for antenna arrays with different column spacings.

[0076] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0077] The above description is an explanation of the application, not a limitation of the application, the scope of the application is defined in the claims, and any form of modification within the protection scope of the application can be made.

Claims

1. A TDD cableless feed network for a base station antenna, characterized by: The shell (1) is internally provided with partitions (12) arranged at intervals along the width direction to form multiple inner cavities (10), and each inner cavity (10) is provided with a phase-shifting assembly (7); two adjacent phase-shifting assemblies (7) form a group, the top surface of the shell (1) at the middle of the group of phase-shifting assemblies (7) extends upward to form a protruding rib (15), and at least one radiating unit (2) is installed on the protruding rib (15); the feed network (73) in the phase-shifting assembly (7) in the inner cavity (10) is bent upward to form a pin (75), and the pin (75) is directly connected with the upper radiating unit (2).

2. A TDD cableless feed network for a base station antenna as claimed in claim 1, characterized in that: The protruding rib (15) is provided with a notch (16) which is communicated with the lower inner cavity (10); the radiating unit (2) is limitingly installed at the notch (16), and the pin (75) is connected with the radiating unit (2) at the notch (16).

3. A TDD cable-free feed network for a base station antenna as claimed in claim 1, characterized in that: The phase-shifting assembly (7) comprises an adapter rod (71) arranged against the partition (12), and the side surface of the adapter rod (71) is provided with a moving medium (72); the inner top surface and the inner bottom surface of the inner cavity (10) at the partition (12) are respectively recessed to form a limiting space (13), the adapter rod (71) and the moving medium (72) are installed at the limiting space (13), so that the adapter rod (71) drives the moving medium (72) to move along the partition (12).

4. A TDD cableless feed network for a base station antenna as claimed in claim 3, characterised in that: The phase-shifting assembly (7) further comprises a feed network (73) which is supported and fixed inside the inner cavity (10) by a support (74), and the support (74) is made of low-dielectric plastic material; the moving medium (72) is arranged on the both sides of the feed network (73) outside the support (74), and the moving medium (72) moves relative to the feed network (73) to perform phase shifting.

5. A TDD cableless feed network for a base station antenna as claimed in claim 3, characterised in that: A plurality of long grooves (17) are formed through the bottom surface of the shell (1), the long grooves (17) are arranged along the moving direction of the adapter rod (71), a connecting piece (6) is slidingly installed on the shell (1) at the long grooves (17), the bottom end of the connecting piece (6) extends into the inner cavity (10) through the long groove (17) and is installed in the corresponding adapter rod (71); a plurality of connecting pieces (6) are jointly provided with a cross rod (5), the cross rod (5) is arranged along the width direction of the shell (1), and the cross rod (5) is driven by a power transmission mechanism (3) to move along the length direction of the long groove (17).

6. A TDD cableless feed network for a base station antenna as claimed in claim 5, characterised in that: The power transmission mechanism (3) is installed on the bottom surface of the shell (1) through a support (31), the cross rod (5) is arranged between the shell (1) and the support (31), and a pull rod (4) is perpendicularly installed at the middle of the cross rod (5); the power transmission mechanism (3) comprises a rotating power (32) installed on the support (31), a screw rod (35) is connected to the output end of the rotating power (32), and the both ends of the screw rod (35) are rotatably supported on the support (31) by a support (37); a spiral seat (33) is spirally installed on the screw rod (35), one end of the spiral seat (33) is fixedly installed with a moving rod (34), and the other end of the moving rod (34) is installed with the pull rod (4) through an adapter frame (36).

7. A TDD cableless feed network for a base station antenna as claimed in claim 5, characterised in that: The bottom surface of the shell (1) extends downward along the width direction to form a T-shaped rib (14), and a long groove (17) is arranged on the T-shaped rib (14), and the connecting piece (6) is slidingly arranged on the T-shaped rib (14).

8. A TDD cableless feed network for a base station antenna as claimed in claim 7, characterised in that: The connecting piece (6) comprises a support plate (61), the bottom surface of the support plate (61) extends downward to form a support arm (66), the support arm (66) is arranged on both sides of the T-shaped rib (14), the support arm (66) extends oppositely to form a protrusion (68), and the horizontal part of the T-shaped rib (14) is slidingly arranged between the protrusion (68) and the bottom surface of the support plate (61); the support arm (66) extends into the inner cavity (10) through the long groove (17), the end of the support arm (66) extends oppositely to form a protruding buckle (67), and the protruding buckle (67) is fixedly connected with the connecting rod (71).

9. A TDD cableless feed network for a base station antenna as claimed in claim 8, characterised in that: The edge of the support plate (61) extends upward to form a channel (62) with a cross-shaped structure, and the upper part of the side wall at the end of the channel (62) extends oppositely to form a buckle (63); the top surface of the support plate (61) extends upward to form a protruding column, the protruding column comprises a first protruding column (64) and a second protruding column (65) arranged along two directions of the channel (62) at intervals, the height of the first protruding column (64) is higher than that of the second protruding column (65), and the height of the buckle (63) in the same direction as the first protruding column (64) is higher than that of the buckle (63) in the same direction as the second protruding column (65).

10. A TDD cableless feed network for a base station antenna as claimed in claim 1, characterized in that: The shell (1) is an extrusion part formed integrally, the number of the inner cavities (10) in the shell (1) is even, the top surface of the shell (1) between the adjacent two groups of phase shift assemblies (7) extends upward to form an extension plate (11), the extension plate (11) and the protruding rib (15) are arranged at intervals, and the extension plate (11) and the protruding rib (15) correspond to the corresponding partition plate (12), respectively.

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