Antenna architecture

Abstract

The invention discloses an antenna architecture, which comprises a reflecting plate, a power dividing plate, a radiation array, a filter and a feed core, and is characterized in that the filter comprises a cavity, a cover plate and a resonator, the cover plate covers the cavity, and the resonator is arranged in the cavity; the power dividing plate is arranged on the front surface of the reflecting plate; the radiation array is arranged on the power dividing plate; the cavity is arranged on the back face of the reflecting plate, a boss welded to the reflecting plate is arranged on the cavity, and a through groove communicated with the cavity is formed in the boss; the feed core is arranged in the through groove, one end of the feed core extends to the front surface of the reflecting plate and is welded with the power dividing plate, and the other end of the feed core extends into the cavity and is welded with the resonator; through the structure, the structural strength between the filter and the reflecting plate can be improved, the feed core is located in the sealed space constructed by welding, no air gap exists, the situation of signal leakage does not exist, meanwhile, the use of materials is reduced, the material cost and the overall weight of the antenna are reduced, and the use requirement is met.

Description

Technical Field

[0001] The present invention relates to an antenna architecture. Background Art

[0002] The 5G massive MIMO antenna system architecture includes a dense radiation array, a power distribution network, a blind plug connector, and a transceiver unit. The power distribution network is usually processed by a high-frequency PCB board. The antenna element is soldered to the power distribution network with solder paste. The feed core passes through the reflector to connect the power distribution network with the filter, and its function is to pass the required radio frequency signal and suppress the interference signal. The connector on the filter is connected to the RRU power amplifier; in the existing antenna architecture, the filter is fixed to the reflector with screws, which has the disadvantage of poor structural strength, and there is an air gap around the PIN pin, posing a risk of signal leakage; secondly, the traditional cavity filter is a coaxial cavity filter, which accounts for a relatively high cost in the entire antenna architecture; therefore, there is an urgent need for an antenna architecture to solve the above problems. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention proposes an antenna architecture.

[0004] An embodiment of the present invention solves the technical problem by adopting the following technical solution: An antenna architecture includes a reflector, a power distribution board, a radiation array, a filter, and a feed core. The filter includes a cavity, a cover plate, and a resonator. The cover plate covers the cavity, and the resonator is arranged in the cavity;

[0005] The power distribution board is arranged on the front side of the reflector;

[0006] The radiation array is arranged on the power distribution board;

[0007] The cavity is arranged on the back side of the reflector. There are bosses welded to the reflector on the cavity, and through slots communicating with the cavity are arranged on the bosses;

[0008] The feed core is arranged in the through slot. One end of the feed core extends to the front side of the reflector and is welded to the power distribution board, and the other end extends into the cavity and is welded to the resonator.

[0009] As one of the preferred embodiments of the present invention, a plurality of resonant cavities are arranged in the cavity, the resonator is arranged in the resonant cavity, and there are a plurality of bosses, feed cores, and resonators, which correspond one by one to form a plurality of resonant components.

[0010] As one of the preferred embodiments of the present invention, the open end of the cavity faces away from the reflector, the resonator is connected to the inner wall of the cover plate, and a tuning component arranged on the cavity and arranged opposite to the resonator is further included.

[0011] As one of the preferred embodiments of the present invention, cross-coupling lines are provided on the inner sidewall of the cover plate on the periphery of the resonator, and the cross-coupling lines and the resonator are welded to the cover plate.

[0012] As one of the preferred embodiments of the present invention, an insulating medium that at least partially wraps the feed core is provided in the through groove.

[0013] As one of the preferred embodiments of the present invention, a mounting seat communicating with the sidewall of the cavity is provided, and further includes a connector provided on the mounting seat and connection pieces respectively connected to the connector and the resonator, and the connector is used to connect to the main device.

[0014] As one of the preferred embodiments of the present invention, a plurality of support platforms welded to the reflector are provided on the cavity.

[0015] As one of the preferred embodiments of the present invention, a plurality of positioning pins are provided on the end face of the cavity, a plurality of positioning pin holes are provided on the cover plate, and the positioning pins are inserted into the positioning pin holes.

[0016] As one of the preferred embodiments of the present invention, a plurality of threaded holes are provided on the end face of the cavity, a plurality of through holes are provided on the cover plate, and further includes a plurality of set screws passing through the through holes and threadedly connected to the threaded holes, and a solder receiving table is provided on the periphery of the threaded holes.

[0017] As one of the preferred embodiments of the present invention, a shielding sticker is provided on the outer sidewall of the cover plate.

[0018] The beneficial effects of the present invention: An antenna structure includes a reflector, a power splitter board, a radiation array, a filter, and a feed core. The filter includes a cavity, a cover plate, and a resonator. The cover plate covers the cavity, and the resonator is provided in the cavity; the power splitter board is provided on the front of the reflector; the radiation array is provided on the power splitter board; the cavity is provided on the back of the reflector, and a boss welded to the reflector is provided on the cavity, and a through groove communicating with the cavity is provided on the boss; the feed core is provided in the through groove, one end of the feed core extends to the front of the reflector and is welded to the power splitter board, and the other end extends into the cavity and is welded to the resonator; through the above structure, the structural strength between the filter and the reflector can be improved, and the feed core is in a sealed space formed by welding, without air gaps, and there is no signal leakage. At the same time, the use of materials is also reduced, which is beneficial to reducing the material cost and the overall weight of the antenna, and meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 It is a first structural schematic diagram of an antenna structure;

[0021] Figure 2 It is a second structural schematic diagram of an antenna architecture;

[0022] Figure 3 It is an exploded view of an antenna architecture;

[0023] Figure 4 It is a cross-sectional view of an antenna architecture;

[0024] Figure 5 It is Figure 4 a partial enlarged view of area A in

[0025] Figure 6 It is Figure 4 a partial enlarged view of area B in

[0026] Figure 7 It is an exploded view of a filter;

[0027] Figure 8 It is a first partial structural schematic diagram of a filter;

[0028] Figure 9 It is Figure 8 a partial enlarged view of area C in

[0029] Figure 10 It is Figure 8 a partial enlarged view of area D in

[0030] Figure 11 It is a second partial structural schematic diagram of a filter;

[0031] Figure 12 It is Figure 11 a partial enlarged view of area E in Specific Embodiments

[0032] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0033] In the description of the present invention, the meaning of "a plurality of" is more than two. Understand "greater than", "less than", "exceeding", etc. as not including the present number, and understand "above", "below", "within", etc. as including the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0034] In the description of the present invention, it should be understood that when it comes to orientation descriptions, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0035] In the present invention, unless otherwise clearly defined, words such as "arrangement", "installation", "connection", etc. should be understood in a broad sense. For example, it can be directly connected, or indirectly connected through an intermediate medium; it can be fixedly connected, or detachably connected, and can also be integrally formed; it can be mechanically connected; it can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0036] Referring to Figures 1 to 12 , an antenna architecture includes a reflector 100, a power splitter board 200, a radiation array 300, a filter 400, and a feed core 500. The filter 400 includes a cavity 410, a cover plate 420, and a resonator 430. The cover plate 420 covers the cavity 410, and the resonator 430 is arranged inside the cavity 410;

[0037] The power splitter board 200 is arranged on the front surface of the reflector 100;

[0038] The radiation array 300 is arranged on the power splitter board 200;

[0039] The cavity 410 is arranged on the back surface of the reflector 100. A boss 510 welded to the reflector 100 is arranged on the cavity 410, and a through groove 520 communicating with the cavity 410 is arranged on the boss 510;

[0040] The feed core 500 is arranged in the through groove 520. One end of the feed core 500 extends to the front surface of the reflector 100 and is welded to the power splitter board 200, and the other end extends into the cavity 410 and is welded to the resonator 430.

[0041] In the present invention, during assembly, first, the radiation array 300, the power splitter board 200, and the reflector 100 are assembled together. Then, the feed core 500 is assembled in the through groove 520, and the other end extends into the cavity 410 of the filter 400 and is welded to the resonator 430 to assemble the complete filter 400. Next, the filter 400 with the feed core 500 is placed on the back of the reflector 100, so that the boss 510 corresponds to the corresponding first mounting hole on the reflector 100. One end of the feed core 500 passes through the reflector 100 and extends to the front of the reflector 100 until it corresponds to the second mounting hole on the power splitter board 200. Finally, a welding device is used to weld the boss 510 to the reflector 100 and the feed core 500 to the power splitter board 200. Specifically, it is a circumferential fusion weld along the hole wall between the boss 510 and the first mounting hole and the hole wall between the feed core 500 and the second mounting hole. Among them, the purpose of welding the boss 510 to the reflector 100 is to fix the filter 400 on the reflector 100, and the purpose of welding the feed core 500 to the power splitter board 200 is to form a continuous circuit. In some embodiments, the boss 510 and the cavity 410 are integrally formed, which not only reduces the production cost but also has better sealing performance.

[0042] Referring to Figures 7 - 8 , in some embodiments, a plurality of resonant cavities 440 are provided in the cavity 410, the resonator 430 is disposed in the resonant cavity 440, and a plurality of bosses 510, feed cores 500, and resonators 430 are provided and correspond one by one to form a plurality of resonant components. The resonator 430 is integrally formed by sheet metal stamping and is allowed to vary according to performance requirements.

[0043] Referring to Figure 4 and Figure 7 , in some embodiments, the open end of the cavity 410 faces away from the reflector 100, the resonator 430 is connected to the inner wall of the cover plate 420, and a tuning component 600 is further provided on the cavity 410 and disposed opposite to the resonator 430. The tuning component 600 can adopt a tuning screw. After assembly, the tuning component 600 is located between the reflector 100 and the cavity 410. Among them, the height of the boss 510 needs to be higher than that of the tuning component 600 to avoid the tuning component 600; it can also hide and protect the tuning component 600 to prevent the tuning component 600 from being displaced due to external factors during use.

[0044] Referring to Figure 4 and Figure 7, in some embodiments, cross-coupling lines 450 are provided on the inner sidewall of the cover plate 420 around the resonator 430, and the cross-coupling lines 450 and the resonator 430 are welded to the cover plate 420; the cross-coupling lines 450 are formed by bending, and their cross-sections can be circular, square, etc. The feature is that the assembly surfaces at both ends are on the same plane, and the assembly (welding position) is on the cover plate 420; further, the middle part of the cross-coupling lines 450 is bent into a non-closed ring shape, and is annularly divergent with the center of the tuning screw (it can be arranged in non-concentric circles), which can improve the debugging sensitivity and will not intersect.

[0045] Refer to Figures 4 - 7 , in some embodiments, an insulating medium 530 that at least partially covers the feed core 500 is provided in the through groove 520; the insulating medium 530 serves as an insulating layer between the feed core 500 and the filter 400.

[0046] Refer to Figures 1 - 4 、 Figure 7 and Figure 8 , in some embodiments, a mounting seat 700 communicating with the sidewall of the cavity 410 is provided, and further includes a connector 710 provided on the mounting seat 700 and a connecting piece 720 respectively connected to the connector 710 and the resonator 430. The connector 710 is used to connect to the main device; by disposing the connector 710 on the side, the profile height of the filter 400 can be reduced, and the profile height of the entire antenna can be reduced, which is beneficial to miniaturization; further, the mounting seat 700 can be integrally formed with the cavity 410, and a corresponding mounting opening is reserved. The limiting seat 730 and the limiting piece 740 can be installed through the mounting opening. The limiting seat 730 is used to limit the connecting piece 720, and the limiting piece 740 is used to limit the resonator 430; furthermore, a second cover plate 750 for closing the mounting opening is also provided, and the second cover plate 750 is connected to the cavity 410 and / or the mounting seat 700 by screws 760.

[0047] Refer to Figure 4 、 Figures 6 - 7 , in some embodiments, a plurality of support platforms 460 welded to the reflector 100 are provided on the cavity 410. The height of the support platforms 460 also needs to be higher than that of the tuning assembly 600. The support platforms 460 can increase the number of connection points between the filter 400 and the reflector 100, thereby improving the firmness of the connection between the filter 400 and the reflector 100.

[0048] Refer to Figures 7 - 10, in some embodiments, a plurality of positioning pins 810 are provided on the end face of the cavity 410, and a plurality of positioning pin holes 820 are provided on the cover plate 420. The positioning pins 810 are inserted into the positioning pin holes 820. Since different electrical requirements need to be met, the materials of the cover plate 420 and the cavity 410 are usually not the same kind. After the cover plate 420 and the cavity 410 are soldered with solder paste, materials with different expansion coefficients are likely to tear the solder paste during temperature changes. By setting the positioning pins 820 for structural constraint, the solder paste can be prevented from being torn during temperature changes.

[0049] Referring to Figures 7 - 10 , in some embodiments, a plurality of threaded holes 830 are provided on the end face of the cavity 410, and a plurality of through holes 840 are provided on the cover plate 420. Further, a plurality of set screws 850 are provided which are inserted into the through holes 840 and are threadedly connected to the threaded holes 830. A solder receiving table 860 is provided on the periphery of the threaded hole 830. The purpose is to form a space between the cover plate 420 and the cavity 410 so that the solder paste will not overflow due to the pressure of the set screws 850, ensuring that there is a sufficient amount of solder paste between the cover plate 420 and the cavity 410, which can improve the tearing stress and the solder paste is not easily cracked. Referring to Figure 9 , the solder receiving table 860 can be provided on the periphery of the threaded hole 830. In some embodiments, a notch is provided on the solder receiving table 860 such that the solder receiving table 860 is not closed, and the notch preferably faces the inner side of the cavity 410. Referring to Figure 10 , the solder receiving table 860 can also be provided on the periphery of the positioning pin 820. Further, the positioning pin 820, the threaded hole 830 and the solder receiving table 860 are integrally die-cast with the cavity 410. There is a clearance fit between the positioning pin 820 and the positioning pin hole 820, and the clearance size is preferably 0.03 - 0.1 mm. The height of the solder receiving table 860 is preferably 0.03 - 0.08 mm.

[0050] Referring to Figures 2 - 3 and Figure 7 , in some embodiments, a shielding sticker 900 is provided on the outer side wall of the cover plate 420, and a plurality of openings 910 are provided on the cover plate 420. The positions of the openings 910 are close to the laser welding position. The purpose is to increase air convection during welding, which is beneficial to lowering the surface temperature of the cover plate 420, and at the same time improving (releasing) the welding internal stress, thereby improving the welding deformation.

[0051] The advantages of the present invention are as follows: Through the above structure, the structural strength between the filter and the reflector can be improved, and the feeding core is in the sealed space constructed by welding, without air gaps, and there is no signal leakage situation. At the same time, the use of materials is reduced, which is beneficial to reducing the material cost and the overall weight of the antenna, meeting the use requirements.

[0052] Certainly, the present invention is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations and substitutions are all included within the scope defined by the claims of this application.

Claims

1. An antenna architecture, characterized in that: It includes a reflector (100), a power splitter board (200), a radiation array (300), a filter (400), and a feed core (500). The filter (400) includes a cavity (410), a cover plate (420), and a resonator (430). The cover plate (420) covers the cavity (410), and the resonator (430) is disposed within the cavity (410). The power splitter board (200) is disposed on the front surface of the reflector (100). The radiation array (300) is disposed on the power splitter board (200). The cavity (410) is disposed on the back surface of the reflector (100). A boss (510) welded to the reflector (100) is provided on the cavity (410), and a through groove (520) communicating with the cavity (410) is provided on the boss (510). The feed core (500) is disposed within the through groove (520). One end of the feed core (500) extends to the front surface of the reflector (100) and is welded to the power splitter board (200), and the other end extends into the cavity (410) and is welded to the resonator (430).

2. An antenna architecture according to claim 1, wherein: A plurality of resonant cavities (440) are provided within the cavity (410), and the resonator (430) is disposed within the resonant cavity (440). The boss (510), the feed core (500), and the resonator (430) are all provided in plurality and correspond one by one to form a plurality of resonant components.

3. An antenna architecture according to claim 1, characterized in that: The open end of the cavity (410) faces away from the reflector (100). The resonator (430) is connected to the inner wall of the cover plate (420), and a tuning component (600) disposed on the cavity (410) and arranged opposite to the resonator (430) is further included.

4. An antenna architecture according to claim 3, wherein: Cross-coupling lines (450) are provided on the inner side wall of the cover plate (420) around the resonator (430), and the cross-coupling lines (450) and the resonator (430) are welded to the cover plate (420).

5. An antenna architecture according to claim 1, characterized in that: An insulating medium (530) at least partially covering the feed core (500) is provided within the through groove (520).

6. An antenna architecture according to claim 1, characterized in that: A mounting seat (700) communicating with the cavity (410) is provided on the side wall of the cavity (410). A connector (710) provided on the mounting seat (700) and a connecting piece (720) respectively connected to the connector (710) and the resonator (430) are further included. The connector (710) is used for connection to a main device.

7. An antenna architecture according to claim 1, characterized in that: A number of support platforms (460) welded to the reflector (100) are provided on the cavity (410).

8. An antenna architecture according to claim 1, characterized in that: A number of positioning pins (810) are provided on the end face of the cavity (410), and a number of positioning pin holes (820) are provided on the cover plate (420). The positioning pins (810) are inserted into the positioning pin holes (820).

9. An antenna architecture according to claim 1, wherein: A plurality of threaded holes (830) are provided on the end surface of the cavity (410), a plurality of through holes (840) are provided on the cover plate (420), and further comprising a plurality of set screws (850) passing through the through holes (840) and threadedly connected to the threaded holes (830), and a solder receiving table (860) is provided on the periphery of the threaded holes (830).

10. An antenna architecture according to claim 1, characterized in that: A shielding sticker (900) is provided on the outer side wall of the cover plate (420).

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