A polarization-corresponding electroplating-free phase shifter and antenna

Abstract

This invention relates to the field of mobile communication technology, and particularly to a polarization-corresponding electroplating-free phase shifter and antenna. The phase shifter includes a phase shifter cavity and an adapter mounted on the cavity for connecting the main feed line of the phase shifter to the input feed connection point of the phase shifter's feed network within the cavity without bending. The upper encapsulation wall of the phase shifter cavity has vias for the polarization feed pins of external radiating elements to pass through and enter the cavity to connect with the corresponding output feed connection point of the phase shifter's feed network. The phase shifter cavity of this invention eliminates the need for post-electroplating processing, significantly reducing the manufacturing cost. The main feed line runs parallel to the length of the phase shifter cavity without any bending, thereby minimizing the space occupied by the phase shifter in the antenna's width direction and avoiding potential intermodulation problems and instability issues caused by bending the main feed line.

Description

Technical Field

[0001] This invention relates to the field of mobile communication technology, and in particular to a polarization-corresponding electroplating-free phase shifter and antenna. Background Technology

[0002] In the field of mobile communications, phase shifters, as a crucial component of base station antennas, have a vital impact on their performance. However, the current mainstream development approach separates the phase shifter from the coaxial cable-based feed network and develops and uses it as a separate component. While this reduces the difficulty of matching the performance of the phase-shifted feed network and provides more flexibility, it also introduces several drawbacks.

[0003] First, coaxial cables introduce transmission losses, limiting antenna gain. Furthermore, the wiring, bending, and soldering of coaxial cables are difficult to control consistently and stably, often leading to performance degradation over time. Additionally, the phase shifter components, after being soldered with coaxial cables, are susceptible to damage during material handling. Second, because feed networks composed of coaxial cables from different frequency bands are often intertwined, inter-frequency interference is a common problem. Third, current mainstream metal-framed cavity phase shifter development solutions require soldering interfaces (whether partial electroplating, partial copper spraying, or overall metal cavity electroplating) at the phase shifter ports (input and output ports) for grounding the coaxial cable's outer conductor, increasing phase shifter costs.

[0004] In addition, in existing technologies, the main feed line is generally directly welded to both the cavity and the phase-shifting feed network, which occupies a large space in the antenna width direction, and the main feed line needs to be bent, which can easily lead to problems such as poor intermodulation and poor stability. Summary of the Invention

[0005] The present invention aims to solve at least one of the problems raised in the background art. To achieve the objective of the present invention, the following technical solution is adopted:

[0006] The first aspect of this invention proposes a polarization-corresponding electroplating-free phase shifter, including a phase shifter cavity and an adapter mounted on the phase shifter cavity for connecting the main feed line of the phase shifter to the input feed connection point of the phase shifter feed network inside the phase shifter cavity without bending. The upper encapsulation wall of the phase shifter cavity is provided with a through hole for the polarization feed plate pin of the external radiation unit to pass through and enter the interior of the phase shifter cavity to connect with the output feed connection point of the corresponding phase shifter feed network.

[0007] A further improvement is that the adapter includes a fixed base and a conductive inner core mounted on the fixed base. The inner core and the fixed base are insulated from each other. A positioning groove is provided on the side wall of the phase shifter cavity at a position corresponding to the input port feed connection point. The fixed base is fixedly mounted on the side wall of the phase shifter cavity, and one end of the inner core extends out of the fixed base and enters the phase shifter cavity through the positioning groove to be welded to the input port feed connection point. The main feed line is mounted on the fixed base, and the inner conductor of the main feed line is soldered to the exposed surface of the other end of the inner core.

[0008] A further improvement is that the fixing base is a groove-shaped block structure. The surface of the fixing base is provided with concentric arc grooves extending along the length of the fixing base and having a stepped discontinuity for installing the insulating medium and outer conductor of the main feeder. A positioning hole is provided on the side wall of the fixing base. The positioning hole extends inward perpendicular to the side wall of the fixing base and passes through the concentric arc groove. The adapter also includes an insulator. One end of the insulator is non-rotatably embedded in the positioning hole, and the other end of the insulator protrudes out of the positioning hole for insertion into the positioning groove. The inner core is non-rotatably inserted into the insulator to achieve insulated installation between the inner core and the fixing base.

[0009] A further improvement is that the insulator is provided with an opening groove, which is used to expose the inner core in the concentric arc groove to form an exposed surface, thereby facilitating solder connection with the inner conductor of the main feeder.

[0010] A further improvement is that the inner core is composed of a large-end rod and a small-end rod with different cross-sectional dimensions. The large-end rod is inserted into the insulator, and the small-end rod extends out of the insulator and enters the phase shifter cavity through the positioning groove to be welded to the input port feed connection point. The upper end of the exposed surface of the large-end rod at the opening groove is provided with a groove along the radial direction of the large-end rod. The large-end rod is soldered to the inner conductor of the main feed line at the groove.

[0011] A further improvement is that a protruding tongue structure extending along the length of the fixed seat is attached to the outside of the fixed seat sidewall, which is the same as the positioning hole. A protruding rib structure is provided on the sidewall of the phase shifter cavity for misalignment with the protruding tongue structure. The fixed seat sidewall is installed on the mounting surface formed by the combination of the sidewall of the phase shifter cavity and the protruding rib structure and is fixed by welding.

[0012] A further improvement is that there is a slanted notch at the upper left corner of the tongue structure, and the slanted notch extends through the length direction of the tongue structure, and the width of the tongue structure is greater than the width of the rib structure.

[0013] A further improvement is that a first welding operation hole is provided on the lower encapsulation wall of the phase shifter cavity at a position concentric with the projection center of the via on the horizontal plane, and a second welding operation hole is provided on the lower encapsulation wall of the phase shifter cavity at a position concentric with the projection center of the input port power supply connection point on the horizontal plane.

[0014] A further improvement is that the phase shifter cavity includes several parallel independent cavities, and each independent cavity is equipped with a phase shifting power supply network. Each independent cavity is equipped with an adapter on one side wall of its cavity.

[0015] A second aspect of the present invention provides an antenna comprising a reflector, a radiating element mounted on the upper surface of the reflector, and a phase shifter mounted on the lower surface of the reflector and insulated from the lower surface of the reflector. The phase shifter is a polarization-corresponding electroplating-free phase shifter as described in any one of the first aspects. The polarization feed pins of the radiating element pass sequentially through the clearance holes of the reflector and the through holes of the upper encapsulation wall of the phase shifter cavity to enter the interior of the phase shifter cavity and connect to the output port feed connection point of the corresponding phase shift feed network.

[0016] The beneficial effects of this invention are:

[0017] This invention creatively enables direct plug-in welding of the phase shifter and the radiating element without the need for coaxial cable connection, effectively reducing antenna loss. By eliminating the coaxial cable between the phase shifter and the radiating element, it effectively avoids poor antenna stability and performance degradation under certain time conditions caused by coaxial cable wiring and bending.

[0018] The present invention, which uses an adapter to connect the main feed line to the phase-shifting feed network, offers several significant advantages over the traditional method of directly welding the main feed line to both the phase shifter cavity and the phase-shifting feed network simultaneously. First, the phase shifter cavity can be made without electroplating, greatly reducing its manufacturing costs. Second, the main feed line runs parallel to the length of the phase shifter cavity without any bending, minimizing its footprint in the antenna's width direction and facilitating antenna layout design. Third, it avoids potential intermodulation issues and instability caused by bending the main feed line, resulting in a more efficient and stable phase shifter. Furthermore, the welding points between the adapter, the phase-shifting feed network, and the main feed line are all located on the same side of the reflector, and are on the same working surface as the output feed connection point of the phase-shifting feed network, facilitating fully automated welding operations with automated equipment. Attached Figure Description

[0019] Figure 1 This is an exploded view of two independent cavity structure phase shifters in an embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of two independent cavity structure phase shifters in an embodiment of the present invention;

[0021] Figure 3 This is a perspective view of the adapter in this invention;

[0022] Figure 4 This is an exploded view of the adapter in this invention;

[0023] Figure 5 This is an exploded view of the four independent cavity structure phase shifters in Embodiment 2 of the present invention;

[0024] Figure 6 This is an exploded view of the adapter installed on the side walls of the two independent cavities in the middle in Embodiment 2 of the present invention;

[0025] Figure 7 This is a cross-sectional view of the adapter installed on the side walls of the two independent cavities in the middle in Embodiment 2 of the present invention;

[0026] Figure 8 For application Figure 1 The image shows an exploded view of two independent cavity phase shifters.

[0027] Figure 9 For application Figure 1 The antenna side view of the two independent cavity phase shifters shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Phase shifter cavity; 2. Phase shifter feed network; 2a. Low-frequency phase shifter feed network; 2b. High-frequency phase shifter feed network; 3. Adapter; 4. Radiation unit; 5. Main feed line; 6. Reflector; 10. Independent cavity; 11. Slot; 12. Through hole; 13. Positioning slot; 14. First welding operation hole; 15. Second welding operation hole; 16. Rib structure; 20. Output port feed connection point; 21. Input port feed connection point; 30. Fixing 31. Insulator; 32. Inner core; 40. Polarized feed plate; 41. Pin; 50. Inner conductor; 51. Insulating medium; 52. Outer conductor; 100. Encapsulation wall; 300. Positioning hole; 301. Concentric arc groove; 302. Lug structure; 3021. Angled notch; 310. Cylindrical structure; 311. Square boss structure; 312. Square groove; 320. Large end rod; 321. Small end rod; 322. "V" groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0031] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. Furthermore, when a component is considered to be "transmittally connected" to another component, the two components only need to be able to transmit power; the specific implementation can be achieved using existing technologies, which will not be elaborated here. When a component is perpendicular or approximately perpendicular to another component, it means that the two components are ideally perpendicular, but due to manufacturing and assembly effects, there may be a certain degree of perpendicularity error. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0033] In this invention, the terms "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0034] Example 1:

[0035] Embodiment 1 of the present invention proposes a polarization-corresponding electroplating-free phase shifter, including a phase shifter cavity 1 and an adapter 3 installed on the phase shifter cavity 1 for connecting the main feed line 5 of the phase shifter to the input feed connection point 21 of the phase shifter feed network 2 inside the phase shifter cavity 1 without bending. The upper encapsulation wall 100 of the phase shifter cavity 1 is provided with a through hole 12 for the polarization feed plate 40 pin 41 of the external radiation unit 4 to enter the interior of the phase shifter cavity 1 and be plugged into the corresponding output feed connection point 20 of the phase shifter feed network 2.

[0036] Combination Figure 1 and Figure 2In this embodiment, the phase shifter cavity 1 is integrally formed from aluminum alloy using a pultrusion process, and the surface of the phase shifter cavity 1 does not require plating. The phase shifter cavity 1 is a structure of two parallel independent cavities 10 arranged in a "spectacle" shape and symmetrically distributed along a vertical central plane. The two independent cavities 10 are connected by a connecting plate, and each independent cavity 10 is equipped with a phase shifting feed network 2. Correspondingly, each of the two independent cavities 10 has an adapter 3 installed on one side wall of its cavity, and the adapter 3 is installed on the outer side wall of the independent cavity 10.

[0037] The independent cavity 10 is defined by two upper and lower encapsulation walls 100 parallel to the surface of the phase-shifting feed network 2 and two left and right side walls parallel to the vertical plane of the phase-shifting feed network 2. The left and right side walls inside the independent cavity 10 are provided with slots 11 for fixing the phase-shifting feed network 2, and the slots 11 are used to determine the height of the phase-shifting feed network 2 in the independent cavity.

[0038] It should be understood that the phase-shifting feed network 2 can be an RF circuit board or a metal strip. Specifically, when the phase-shifting feed network 2 is a metal strip, it needs to be pre-installed with an insulating support and snapped into the corresponding slots 11 on the left and right sidewalls of the independent cavity 10. The output port feed connection point 20 of the phase-shifting feed network 2 and the polarization feed plate 40 pin 41 of the radiation unit 4 are projected onto the horizontal plane and implemented using an integrated simulation design.

[0039] Specifically, such as Figures 1-4 As shown, in this embodiment, the adapter 3 includes a fixed base 30 and a conductive inner core 32 mounted on the fixed base 30. The inner core 32 and the fixed base 30 are insulated from each other. A positioning groove 13 is provided on the side wall of the phase shifter cavity 1 at the location corresponding to the input port feed connection point 21. The fixed base 30 is fixedly mounted on the side wall of the phase shifter cavity 1, and one end of the inner core 32 extends out of the fixed base 30 and enters the phase shifter cavity 1 through the positioning groove 13 to be welded to the input port feed connection point 21. The main feed line 5 is mounted on the fixed base 30, and the inner conductor 50 of the main feed line 5 is soldered to the exposed surface of the other end of the inner core 32.

[0040] Specifically, in this embodiment, the fixing base 30 is a groove-shaped block structure. The surface of the fixing base 30 is provided with concentric arc grooves 301 extending along the length direction of the fixing base 30 and having a stepped discontinuity for installing the insulating medium 51 and outer conductor 52 of the main feeder 5. A positioning hole 300 is provided on the side wall of the fixing base 30. The positioning hole 300 extends inward perpendicular to the side wall of the fixing base 30 and passes through the concentric arc groove 301 but does not penetrate the width direction of the fixing base 30, thereby effectively limiting the displacement of the insulator 31 along the axial direction of the positioning hole 300. The adapter 3 also includes an insulator 31. One end of the insulator 31 is non-rotatably embedded in the positioning hole 300, and the other end of the insulator 31 protrudes out of the positioning hole 300 for insertion into the positioning groove 13. The inner core 32 is non-rotatably inserted into the insulator 31 to achieve insulated installation between the inner core 32 and the fixing base 30.

[0041] The concentric arc groove 301 with stepped discontinuity is symmetrical about the central plane of the length direction of the fixed seat 30.

[0042] Furthermore, the cross-sectional shape of the positioning hole 300 is an irregular hole structure with the same cross-sectional shape as the insulator 31. It can be composed of circular and square protruding notches, or it can be composed of two other sets of mutually non-rotatable shapes. This can effectively limit the displacement of the insulator 31 along the radial direction of the positioning hole 300.

[0043] In this embodiment, the main structure of the insulator 31 consists of a hollow cylindrical structure 310 with one open end and a square boss structure 311 extending along the axial direction of the cylindrical structure 310 and integrated with it. The cylindrical structure 310 is a hollow structure, and its cross-sectional shape is an irregular hole structure with the same cross-sectional shape as the large end rod 320 of the inner core 32 and which cannot rotate relative to each other, thereby restricting the relative displacement between the inner core 32 and the insulator 31.

[0044] An opening slot is provided on the cylindrical structure 310 of the insulator 31. The opening slot is a square slot 312. The opening slot is used to expose the inner core 32 in the concentric arc slot 301 to form an exposed surface, thereby facilitating solder connection with the inner conductor 50 of the main feeder 5.

[0045] As a preferred embodiment, the upper end of the positioning groove 13 extends through the upper encapsulation wall 100 of the phase shifter cavity 1, and the width of the positioning groove 13 is slightly larger than the diameter of the insulator 31 of the adapter 3, so that the positioning groove 13 can restrict the displacement of the adapter 3 along the length direction of the phase shifter cavity 1.

[0046] In this embodiment, the inner core 32 is formed by connecting a large-end rod 320 and a small-end rod 321 with different cross-sectional dimensions. The large-end rod 320 is inserted into the insulator 31, and the small-end rod 321 extends out of the insulator 31 and enters the phase shifter cavity 1 through the positioning groove 13 to be welded to the input port feed connection point 21. The upper end of the exposed surface of the large-end rod 320 at the opening groove is provided with a groove along the radial direction of the large-end rod 320. The large-end rod 320 is soldered to the inner conductor 50 of the main feed line 5 at the groove. Preferably, the groove is a "V" shaped groove 322.

[0047] Preferably, the cross-section of the small end rod 321 is cylindrical, and the cross-section of the large end rod 320 is composed of a circle and vertical notches that are parallel and symmetrical about the central plane of the large end rod 320. Alternatively, it can be composed of other shapes that cannot rotate relative to each other.

[0048] In this embodiment, a tongue structure 302 extending along the length of the fixing seat 30 is attached to the outside of the side wall of the fixing seat 30, which is the same as the positioning hole 300. A rib structure 16 for misalignment with the tongue structure 302 is provided on the side wall of the phase shifter cavity 1. The side wall of the fixing seat 30 is installed on the mounting surface formed by the combination of the side wall of the phase shifter cavity 1 and the rib structure 16 and is fixed by welding.

[0049] like Figure 2 As shown, each of the two independent cavities 10 has a raised rib structure 16 on its outer sidewall. In addition to being used for misaligned installation with the tongue structure 302, the raised rib structure 16 can also make the wall thickness of the independent cavity 10 more uniform, which can effectively reduce the difficulty of processing and forming the phase shifter cavity 1 and better ensure the processing and forming quality of the phase shifter cavity 1.

[0050] As a preferred embodiment, the upper left corner of the tongue structure 302 has a slanted notch 3021, and the slanted notch 3021 extends through the length direction of the tongue structure 302. The width of the tongue structure 302 is greater than the width of the rib structure 16.

[0051] Generally, such as Figure 2As shown, the height H1 of the tongue structure 302 is 2-3 mm, and the width W1 of the tongue structure 302 is 0.5-1 mm larger than the width W2 of the rib structure 16 of the phase shifter cavity 1. These parameters ensure good fusion penetration between the contact surfaces of the fixing seat 30 and the phase shifter cavity 1 when welded together using a specific laser welding power. This results in a good bond between the two, preventing potential passive intermodulation issues caused by poor metal contact. Furthermore, the oblique notch 3021 facilitates fusion penetration between the fixing seat 30 and the phase shifter cavity 1 while also improving the appearance quality of the welded joint surface.

[0052] In this embodiment, a first welding operation hole 14 is provided on the lower encapsulation wall 100 of the phase shifter cavity 1 at a position concentric with the horizontal projection center of the via 12, and a second welding operation hole 15 is provided on the lower encapsulation wall 100 of the phase shifter cavity 1 at a position concentric with the horizontal projection center of the input port power supply connection point 21. The horizontal projection center of the output port power supply connection point 20 of the phase shifting power supply network 2 is concentric with the via 12.

[0053] Preferably, the diameters of the first welding operation hole 14 and the second welding operation hole 15 are 8-10 mm. This facilitates fully automated welding by automated equipment while minimizing radiation signal leakage.

[0054] like Figure 1 As shown, when installing the adapter 3, the adapter 3 is mounted on the mounting surface formed by the side wall of the phase shifter cavity 1 and the rib structure 16. The small end rod 321 of the inner core 32 extends into the independent cavity 10 and is welded to the input port feed connection point 21 of the corresponding phase shift feed network 2. The large end rod 320 of the inner core 32 is soldered to the inner conductor 50 of the main feed line 5 at its "V" groove 322. The insulating medium 51 and the outer conductor 52 of the main feed line 5 are installed in the concentric arc groove 301 on the fixing base 30 and soldered to the concentric arc groove 301 of the fixing base 30. The "V" groove 322 provides a certain solder accommodating space, so that the inner conductor 50 and the inner core 32 can be completely wrapped by solder, resulting in a good welding effect.

[0055] The present invention, which uses the adapter 3 to connect the main feed line 5 to the phase shifter network 2, offers several significant advantages over the traditional method of directly welding the main feed line 5 to both the phase shifter cavity 1 and the phase shifter network 2 simultaneously. First, the phase shifter cavity 1 can be exempted from electroplating post-processing, greatly reducing its manufacturing cost. Second, the main feed line 5 runs parallel to the length of the phase shifter cavity 1 without any bending, minimizing its footprint in the antenna width direction and facilitating antenna layout design. Third, it avoids potential intermodulation problems and instability caused by bending the main feed line 5, resulting in better and more stable phase shifter performance. Furthermore, the welding points between the adapter 3, the phase shifter network 2, and the main feed line 5 are all located on the same surface of the reflector 6 and on the same working surface as the output feed connection point 20 of the phase shifter network 2, facilitating fully automated welding operations with automated equipment.

[0056] This embodiment correspondingly proposes an antenna, including a reflector 6, a radiating element 4 mounted on the upper plane of the reflector 6, and a phase shifter mounted on the lower plane of the reflector 6 and insulated from the lower plane of the reflector 6. The phase shifter adopts a polarization-corresponding electroplating-free phase shifter as described above. The polarization feed plate 40 pins 41 of the radiating element 4 pass through the clearance hole of the reflector 6 and the through hole 12 of the upper encapsulation wall 100 of the phase shifter cavity 1 in sequence to enter the interior of the phase shifter cavity 1 and connect with the output port feed connection point 20 of the corresponding phase shift feed network 2.

[0057] Specifically, such as Figure 8 and Figure 9 As shown, the radiating unit 4 is mounted on the upper surface of the reflector 6. The pins 41 of the polarization feed plate 40 of the radiating unit 4 pass sequentially through the reflector 6, the upper encapsulation wall of the phase shifter cavity 1, and the phase shifter feed network 2, extending beyond the lower surface of the phase shifter feed network 2 by a certain distance. This facilitates the welding operation between the pins 41 and the phase shifter feed network 2 using automated equipment. The direct plug-in welding method between the pins 41 of the polarization feed plate 40 of the radiating unit 4 and the phase shifter feed network 2 eliminates the need for a traditional coaxial cable feed network, thereby greatly reducing transmission loss. Furthermore, it avoids potential antenna performance degradation caused by inconsistent wiring and bending of the coaxial cable, and prevents damage to the phase shifter assembly during material handling after welding the coaxial cable.

[0058] The lower encapsulation wall 100 of the phase shifter cavity 1 and the horizontal center projection of the pin 41 of the polarization feed plate 40 of the radiation unit 4 are provided with first welding operation holes 14, so that each electrical connection point on the phase shifting feed network 2 is located on the back of the reflector plate 6 and exposed in the same working direction, and the position is fixed, which facilitates fully automatic welding by automated equipment.

[0059] Example 2:

[0060] Embodiment 2 of the present invention proposes a polarization-corresponding electroplating-free phase shifter, which is a further improvement based on Embodiment 1.

[0061] like Figure 5 As shown, the phase shifter cavity 1 is a structure of four independent cavities 10 symmetrically distributed in a "spectacle" shape and perpendicular to the central plane. The two independent cavities 10 in the middle are also connected by a connecting plate, and a phase shifting feed network 2 is installed in each independent cavity 10.

[0062] In this embodiment, the two independent cavities 10 in the middle are equipped with high-frequency phase-shifting feed networks 2b, which correspond one-to-one with the left and right polarizations of the high-frequency radiation unit array (not shown); while the two independent cavities 10 on the outer sides are equipped with low-frequency phase-shifting feed networks 2a, which correspond one-to-one with the left and right polarizations of the low-frequency radiation unit array (not shown). Specifically, the high-frequency radiation units and low-frequency radiation units can be installed on the reflector 6 in a nested configuration.

[0063] This invention, by making the phase-shifting feed networks 2 of different frequency bands independent cavities, can greatly eliminate inter-frequency interference. The adapters 3 installed on the side walls of the two independent cavities 10 on the outside have the same structure as the adapter 3 in the first embodiment above, but the adapters 3 installed on the side walls of the two independent cavities 10 in the middle have a slightly different structure from the adapter 3 in the first embodiment above.

[0064] Specifically, such as Figure 5 , Figure 6 and Figure 7 As shown, the adapter 3 installed on the side wall of the two independent cavities 10 in the middle consists of a fixed base 30, two non-rotatable insulators 31 embedded in the positioning holes 300 on the fixed base 30, and two inner cores 32 that are non-rotatably covered by the insulators 31.

[0065] The fixed base 30 is symmetrical about its center plane in both the length and width directions and can simultaneously form an adapter 3 with two insulators 31 and two inner cores 32. This allows the adapter 3 to simultaneously enable signal transmission between the phase-shifting feed network 2 within the two independent cavities 10 and the two main feed lines 5.

[0066] This is equivalent to improving the two adapters 3 in Embodiment 1 into one adapter 3, which is installed as a whole between the two independent cavities 10 in the middle. This can effectively save installation space and facilitate the miniaturization and integration of the antenna.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The embodiments described above are merely illustrative of specific implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A polarization-corresponding electroplating-free phase shifter, characterized in that, The device includes a phase shifter cavity and an adapter mounted on the phase shifter cavity for connecting the main feed line of the phase shifter to the input feed connection point of the phase shifter feed network inside the phase shifter cavity without bending. The upper encapsulation wall of the phase shifter cavity is provided with a through hole for the polarization feed plate pin of the external radiation unit to pass through and enter the interior of the phase shifter cavity to connect with the output feed connection point of the corresponding phase shifter feed network. The adapter includes a fixed base and a conductive inner core mounted on the fixed base. The inner core and the fixed base are insulated from each other. A positioning groove is provided on the side wall of the phase shifter cavity at a position corresponding to the input port feed connection point. The fixed base is fixedly mounted on the side wall of the phase shifter cavity, and one end of the inner core extends out of the fixed base and enters the phase shifter cavity through the positioning groove to be welded to the input port feed connection point. The main feed line is mounted on the fixed base, and the inner conductor of the main feed line is soldered to the exposed surface of the other end of the inner core. The mounting base is a slotted block structure. The surface of the mounting base has concentric arc grooves extending along its length and exhibiting stepped discontinuities for mounting the insulating medium and outer conductor of the main feeder. A positioning hole is provided on the side wall of the mounting base, extending inward perpendicularly to the side wall and passing through the concentric arc grooves. The adapter also includes an insulator. One end of the insulator is non-rotatably embedded in the positioning hole, while the other end protrudes from the positioning hole for insertion into the positioning groove. The inner core is non-rotatably inserted into the insulator, thus achieving insulated installation between the inner core and the mounting base.

2. The polarization-corresponding electroplating-free phase shifter according to claim 1, characterized in that, The insulator is provided with an opening groove, which is used to expose the inner core in the concentric arc groove to form an exposed surface, thereby facilitating solder connection with the inner conductor of the main feeder.

3. A polarization-corresponding electroplating-free phase shifter according to claim 2, characterized in that, The inner core is composed of a large-end rod and a small-end rod with different cross-sectional dimensions. The large-end rod is inserted into the insulator, and the small-end rod extends out of the insulator and enters the phase shifter cavity through the positioning groove to be welded to the input port feed connection point. The upper end of the exposed surface of the large-end rod at the opening groove is provided with a groove along the radial direction of the large-end rod. The large-end rod is soldered to the inner conductor of the main feed line at the groove.

4. A polarization-corresponding electroplating-free phase shifter according to claim 1, characterized in that, A tongue structure extending along the length of the fixed seat is attached to the outside of the fixed seat sidewall, which is the same as the positioning hole. A rib structure is provided on the sidewall of the phase shifter cavity for misalignment with the tongue structure. The fixed seat sidewall is installed on the mounting surface formed by the combination of the sidewall of the phase shifter cavity and the rib structure and is fixed by welding.

5. A polarization-corresponding electroplating-free phase shifter according to claim 4, characterized in that, The upper left corner of the tongue structure has a slanted notch, and the slanted notch extends through the length of the tongue structure. The width of the tongue structure is greater than the width of the rib structure.

6. A polarization-corresponding electroplating-free phase shifter according to claim 1, characterized in that, A first welding operation hole is provided on the lower encapsulation wall of the phase shifter cavity at a position concentric with the projection center of the horizontal plane of the via, and a second welding operation hole is provided on the lower encapsulation wall of the phase shifter cavity at a position concentric with the projection center of the horizontal plane of the input port power supply connection point.

7. A polarization-corresponding electroplating-free phase shifter according to any one of claims 1-6, characterized in that, The phase shifter cavity includes several parallel independent cavities, and each independent cavity is equipped with a phase shifting power supply network. Each independent cavity has an adapter installed on one side wall of its cavity.

8. An antenna comprising a reflector, a radiating element mounted on the upper surface of the reflector, and a phase shifter mounted on the lower surface of the reflector and insulated from the lower surface of the reflector, characterized in that, The phase shifter is a polarization-corresponding electroplating-free phase shifter as described in any one of claims 1-7. The polarization feed plate pins of the radiation unit pass through the avoidance holes of the reflector plate and the through holes of the upper encapsulation wall of the phase shifter cavity in sequence to enter the interior of the phase shifter cavity and connect with the output port feed connection point of the corresponding phase shifting feed network.

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