Broadband low-profile high-efficiency high-isolation antenna

Abstract

The embodiment of the invention provides a broadband low-profile high-efficiency high-isolation antenna. The broadband low-profile high-efficiency high-isolation antenna comprises a base, a radiation sheet and a feed structure, the feed structure is arranged on the base; the radiation sheet is arranged on the side, away from the base, of the feed structure, the radiation sheet comprises at least three radiation areas, the at least three radiation areas are arranged at intervals, and at least one radiation area is electrically connected with the feed structure. Due to the fact that the at least three radiation areas are arranged, the bandwidth can be expanded on the basis that the size of the antenna is not increased through mutual coupling of the at least three radiation areas, spectrum resources are effectively utilized, and improvement of communication performance and communication efficiency is facilitated. Besides, through mutual coupling of the at least three radiation areas, the resonant frequency and the antenna profile can be reduced, so that miniaturization of the antenna is further realized, the cost of the antenna is reduced, and the universality of the antenna is improved.

Description

Technical Field

[0001] The present application belongs to the field of antenna technology, and specifically relates to a broadband, low-profile, high-efficiency, and high-isolation antenna. Background Art

[0002] An antenna is a device that can convert electromagnetic waves, which can realize the reception or transmission of electromagnetic wave signals. By expanding the bandwidth of the antenna, the antenna's utilization of spectrum resources can be improved, thereby improving communication performance and communication efficiency.

[0003] In the related art, the bandwidth of the antenna is usually expanded by increasing the size of the antenna. However, as the size of the antenna increases, not only the cost of the antenna increases, but also the versatility of the antenna is poor. Summary of the invention

[0004] The present application aims to provide a broadband, low-profile, high-efficiency, high-isolation antenna to solve the problem that existing antennas are large in size, resulting in increased costs and poor versatility.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses a broadband, low-profile, high-efficiency, high-isolation antenna, comprising: a base, a radiating sheet, and a feeding structure;

[0007] The feeding structure is arranged on the base;

[0008] The radiation sheet is arranged on a side of the feeding structure away from the base, and the radiation sheet includes at least three radiation areas, at least three of the radiation areas are arranged at intervals, and at least one of the radiation areas is electrically connected to the feeding structure.

[0009] Optionally, the radiation sheet further comprises a first body, wherein the first body has a first surface and a second surface which are arranged away from each other along a thickness direction thereof, and the second surface is close to the feeding structure;

[0010] The radiation zone includes a first radiation zone, a second radiation zone, a third radiation zone and a fourth radiation zone. The first radiation zone, the second radiation zone and the third radiation zone are sequentially arranged on the first surface along the direction from the center to the edge of the first body, and the first radiation zone is electrically connected to the feeding structure. The fourth radiation zone is arranged on the second surface and is electrically connected to the second radiation zone.

[0011] Optionally, the first radiation zone includes: a plurality of first radiation units, the plurality of first radiation units are arranged at intervals along the circumferential direction of the first body, and each of the first radiation units is electrically connected to the feeding structure.

[0012] Optionally, the second radiation zone includes: a plurality of second radiation units, the plurality of second radiation units are arranged at intervals along the circumference of the first body, and at least one second radiation unit corresponds to one first radiation unit.

[0013] Optionally, the third radiation zone includes: a plurality of third radiation units, the plurality of third radiation units are arranged at intervals along the circumference of the first body, and at least one of the third radiation units corresponds to one of the second radiation units.

[0014] Optionally, the fourth radiation zone includes: a plurality of fourth radiation units, the plurality of fourth radiation units are arranged at intervals along the circumference of the first body, and at least one of the fourth radiation units is electrically connected to one of the second radiation units.

[0015] Optionally, the first radiation unit includes at least one first metal patch, and the first metal patch is rectangular;

[0016] And / or, the second radiation unit includes at least one second metal patch, and the second metal patch is trapezoidal;

[0017] And / or, the third radiation unit includes at least one third metal patch, and the third metal patch is in a strip shape;

[0018] And / or, the fourth radiation unit includes at least one fourth metal patch, and the fourth metal patch is in a strip shape.

[0019] Optionally, in one of the third radiation units, a plurality of the third metal patches are provided, the third metal patches extend along the circumference of the first body, and the plurality of the third metal patches are spaced apart from each other in a direction from the center to the edge of the first body.

[0020] Optionally, in one of the fourth radiation units, at least one fourth metal patch is provided, the fourth metal patch extends along the circumference of the first body and at least one of the fourth metal patches is electrically connected to the second metal patch.

[0021] Optionally, the second metal patch includes a first edge facing away from the first metal patch;

[0022] The first body is provided with a plurality of first metallized vias, one end of the first metallized via is electrically connected to the first edge, and the other end of the first metallized via is electrically connected to the fourth metal patch.

[0023] Optionally, the broadband, low-profile, high-efficiency, high-isolation antenna further includes: a coupling plate, wherein the coupling plate is disposed between the radiation plate and the feeding structure and is electrically connected to the radiation plate and the feeding structure respectively.

[0024] Optionally, the coupling sheet includes: a second body, a first coupling region and a second coupling region,

[0025] The second body has a third surface and a fourth surface which are arranged away from each other along the thickness direction thereof, and the fourth surface is close to the feeding structure;

[0026] The first coupling region is disposed on the third surface and is electrically connected to the radiation sheet;

[0027] The second coupling region is disposed on the fourth surface and is electrically connected to the first coupling region and the feeding structure respectively.

[0028] Optionally, the first coupling region includes: at least one fifth metal patch, the fifth metal patch being coupled to the radiation patch;

[0029] The second coupling region includes a plurality of sixth metal patches, which are spaced apart along the circumference of the second body and are all electrically connected to the fifth metal patch.

[0030] Optionally, the second body is provided with a plurality of second metallized vias, one end of the second metallized via is electrically connected to the fifth metal patch, and the other end of the second metallized via is electrically connected to the sixth metal patch.

[0031] Optionally, the broadband, low-profile, high-efficiency, and high-isolation antenna further includes: a dielectric plate, wherein the dielectric plate is disposed between the coupling plate and the base.

[0032] Optionally, the feeding structure comprises: a radio frequency connector, a feeding network and a feeding probe;

[0033] The feed network comprises an output end and an input end, wherein the input end is electrically connected to the RF connector;

[0034] The feeding probe comprises an input connection portion and an output connection portion, the input connection portion is electrically connected to the output end, and the output connection portion is electrically connected to the coupling plate.

[0035] Optionally, the feeding probe further includes a protrusion, which is arranged in a circumferential direction of the output connecting portion, and the protrusion is electrically connected to the coupling sheet.

[0036] Optionally, a plurality of the protrusions are provided, and the plurality of the protrusions are arranged at intervals along the circumference of the output connecting portion.

[0037] Optionally, the base comprises: a substrate and a boss, wherein the boss is arranged on a side of the substrate away from the radiation sheet;

[0038] The substrate has a fifth surface facing away from the radiation sheet, and the boss has a sixth surface facing away from the radiation sheet;

[0039] The feeding network includes a first feeding network and a second feeding network, one of the first feeding network and the second feeding network is disposed on the fifth surface, and the other of the first feeding network and the second feeding network is disposed on the sixth surface.

[0040] Optionally, the feeding probe comprises: a first feeding probe and a second feeding probe, the first feeding probe is electrically connected to the first feeding network, the second feeding probe is electrically connected to the second feeding network, wherein the first feeding probe and the second feeding probe have different lengths.

[0041] Optionally, the broadband, low-profile, high-efficiency, high-isolation antenna further includes an isolation structure, which is fixedly connected to the base and disposed around at least a portion of the feeding probe.

[0042] Optionally, the isolation structure comprises: a first sleeve and a second sleeve, the second sleeve is sleeved on the first sleeve and has a gap with the first sleeve, and the feeding probe is inserted into the first sleeve.

[0043] In the embodiment of the present application, the radiation sheet is provided with at least three radiation zones, and at least one of the radiation zones is electrically connected to the feed structure. In this way, by electrically connecting at least one of the radiation zones to the feed structure, the reception and transmission of signals can be realized. More importantly, since at least three radiation zones are provided, the bandwidth can be expanded without increasing the size of the antenna through the mutual coupling of at least three radiation zones, thereby effectively utilizing spectrum resources, which is beneficial to improving communication performance and communication efficiency. In addition, through the mutual coupling of at least three radiation zones, the resonant frequency can also be reduced, and the antenna profile can be reduced, thereby further realizing the miniaturization of the antenna, which is beneficial to reducing the cost of the antenna and improving the versatility of the antenna.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0046] Figure 1 This is one of the structural schematic diagrams of a broadband, low-profile, high-efficiency, high-isolation antenna provided in an embodiment of the present application;

[0047] Figure 2 This is the second structural schematic diagram of a broadband, low-profile, high-efficiency, high-isolation antenna provided in an embodiment of the present application;

[0048] Figure 3 This is the third structural schematic diagram of a broadband, low-profile, high-efficiency, high-isolation antenna provided in an embodiment of the present application;

[0049] Figure 4 This is the fourth structural schematic diagram of a broadband, low-profile, high-efficiency, high-isolation antenna provided in an embodiment of the present application;

[0050] Figure 5 It is one of the structural schematic diagrams of the base provided in the embodiment of the present application;

[0051] Figure 6 yes Figure 5 A partial enlarged view of

[0052] Figure 7 This is the second structural schematic diagram of the base provided in the embodiment of the present application;

[0053] Figure 8 This is one of the structural schematic diagrams of the radiation sheet provided in the embodiment of the present application;

[0054] Fig. 9 This is the second structural schematic diagram of the radiation sheet provided in the embodiment of the present application;

[0055] Fig.10 It is one of the structural schematic diagrams of the coupling piece provided in the embodiment of the present application;

[0056] Fig.11 This is the second structural schematic diagram of the coupling piece provided in the embodiment of the present application;

[0057] Fig.12 is a schematic diagram of the structure of a dielectric plate provided in an embodiment of the present application;

[0058] Fig.13 This is one of the structural schematic diagrams of the feeding probe provided in the embodiment of the present application;

[0059] Fig.14 This is the second structural schematic diagram of the feeding probe provided in the embodiment of the present application;

[0060] Fig.15 is a schematic diagram of the structure of a feeding network provided in an embodiment of the present application;

[0061] Fig.16 Schematic diagram of the impedance of the feeding network provided in the embodiment of the present application.

[0062] Figure numerals: 1. base, 11. substrate, 111. fifth surface, 12. boss, 121. sixth surface, 13. isolation structure, 131. first sleeve, 132. second sleeve, 14. laminated structure, 2. radiation sheet, 21. first body, 211. first surface, 212. second surface, 213. first metalized via, 22. first metal patch, 23. second metal patch, 24. third metal patch, 25. fourth metal patch, 3. coupling sheet, 31. second body, 311. third surface, 312. fourth surface, 313. second metallized via, 32. fifth metal patch, 33. sixth metal patch, 4. dielectric board, 41. mounting hole, 5. feeding structure, 51. feeding network, 511. first feeding network, 512. second feeding network, 52. feeding probe, 521. first feeding probe, 522. second feeding probe, 523. input connection part, 524. output connection part, 525. protrusion, 6. dielectric screw, X. first direction. DETAILED DESCRIPTION

[0063] Embodiments of the present invention will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0064] The term "first" or "second" in the specification and claims of the present application may include one or more of the features explicitly or implicitly. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0065] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] The embodiment of the present application provides a broadband, low-profile, high-efficiency, high-isolation antenna. The broadband, low-profile, high-efficiency, high-isolation antenna of the present application is described in detail below with reference to the accompanying drawings.

[0068] Reference Figures 1 to 4 , showing a schematic diagram of the structure of a broadband, low-profile, high-efficiency, high-isolation antenna provided in an embodiment of the present application, with reference to Figures 5 to 7 , showing a schematic diagram of the structure of the base provided in the embodiment of the present application, referring to Figures 8 to 9 , showing a schematic diagram of the structure of the radiation sheet provided in the embodiment of the present application, referring to Figure 10 to Figure 11 , showing a schematic diagram of the structure of the coupling sheet provided in an embodiment of the present application, referring to Fig.12 , showing a schematic diagram of the structure of the dielectric plate provided in the embodiment of the present application, referring to Figure 13 to Figure 14 , showing a schematic diagram of the structure of the feeding probe provided in the embodiment of the present application, referring to Fig.15 , showing a schematic diagram of the structure of the feeding network provided in the embodiment of the present application, referring to Fig.16 , shows an impedance schematic diagram of the feeding network provided in an embodiment of the present application.

[0069] like Figures 1 to 4 As shown, the present application provides a broadband, low-profile, high-efficiency, high-isolation antenna, comprising: a base 1, a radiating plate 2 and a feeding structure 5; the feeding structure 5 is arranged on the base 1, the radiating plate 2 is arranged on the side of the feeding structure 5 away from the base 1, the radiating plate 2 includes at least three radiating areas, at least three radiating areas are arranged at intervals and at least one of the radiating areas is electrically connected to the feeding structure 5.

[0070] In the embodiment of the present application, the radiation sheet 2 is provided with at least three radiation zones, and at least one of the radiation zones is electrically connected to the feed structure 5. In this way, by electrically connecting at least one of the radiation zones to the feed structure 5, the reception and transmission of signals can be realized. More importantly, since at least three radiation zones are provided, the bandwidth can be expanded without increasing the size of the antenna through the mutual coupling of at least three radiation zones, thereby effectively utilizing spectrum resources, which is beneficial to improving communication performance and communication efficiency. In addition, through the mutual coupling of at least three radiation zones, the resonant frequency can also be reduced, and the antenna profile can be reduced, thereby further realizing the miniaturization of the antenna, which is beneficial to reducing the cost of the antenna and improving the versatility of the antenna.

[0071] It should be noted that the "electrical connection" in the embodiment of the present application can be an electromagnetic coupling connection or an electrical connection, which is not limited here, and those skilled in the art can adjust it according to actual needs. In addition, the "signal" in the embodiment of the present application is an electromagnetic wave signal. In addition, the base 1 in the embodiment of the present application is made of metal, including but not limited to copper, stainless steel, aluminum alloy, etc. In one embodiment, the base 1 can be made of aluminum alloy 2A12 material.

[0072] In some optional embodiments of the present application, such as Figures 8 to 9 As shown, the radiation sheet 2 also includes a first body 21, the first body 21 has a first surface 211 and a second surface 212 which are arranged opposite to each other along the thickness direction thereof, and the second surface 212 is close to the feeding structure 5; the radiation zone includes a first radiation zone, a second radiation zone, a third radiation zone and a fourth radiation zone, the first radiation zone, the second radiation zone and the third radiation zone are arranged in sequence on the first surface 211 from the center to the edge of the first body 21, and the first radiation zone is electrically connected to the feeding structure 5, and the fourth radiation zone is arranged on the second surface 212 and is electrically connected to the second radiation zone.

[0073] In the embodiment of the present application, since four radiation zones are provided, under the interaction of the four radiation zones, on the one hand, more resonant modes can be generated, thereby covering a wider frequency range, which is conducive to further expanding the bandwidth; on the other hand, the resonant frequency can be reduced, thereby reducing the overall cross-section of the antenna while maintaining the antenna performance, which is conducive to the miniaturization of the antenna. In addition, since the first radiation zone, the second radiation zone and the third radiation zone are provided on the first surface 211, and the fourth radiation zone is provided on the second surface 212, on the one hand, by sequentially arranging the first radiation zone, the second radiation zone and the third radiation zone along the direction from the center to the edge of the first body 21, this layout is conducive to improving the symmetry of the antenna beam rotation. On the other hand, by respectively arranging multiple radiation zones on the first surface 211 and the second surface 212, the space of the first body 21 can be effectively utilized, which is conducive to further reducing the size of the radiation sheet 2 and further miniaturizing the antenna. It should be noted that the embodiment of the present application does not limit the material of the first body 21, and those skilled in the art can choose according to actual needs. In one embodiment, the first plate body can be made of Ruilong 410B plate.

[0074] Further, the first radiation zone includes: a plurality of first radiation units, the plurality of first radiation units are arranged at intervals along the circumference of the first body 21, and each first radiation unit is electrically connected to the feed structure 5. The second radiation zone includes: a plurality of second radiation units, the plurality of second radiation units are arranged at intervals along the circumference of the first body 21, and at least one second radiation unit corresponds to one first radiation unit. The third radiation zone includes: a plurality of third radiation units, the plurality of third radiation units are arranged at intervals along the circumference of the first body 21, and at least one third radiation unit corresponds to one second radiation unit. The fourth radiation zone includes: a plurality of fourth radiation units, the plurality of fourth radiation units are arranged at intervals along the circumference of the first body 21, and at least one fourth radiation unit is electrically connected to one second radiation unit.

[0075] In an embodiment of the present application, by dividing the radiation zone (including the first radiation zone, the second radiation zone, the third radiation zone and the fourth radiation zone) into multiple radiation units (including the first radiation unit, the second radiation unit, the third radiation unit and the fourth radiation unit), on the one hand, the interaction of the multiple radiation units can not only generate more resonance modes, which is conducive to further expanding the bandwidth so that the antenna can maintain good performance in different frequency bands; but also can further reduce the resonance frequency and the antenna cross-section, which is conducive to the miniaturization of the antenna.

[0076] It should be noted that the embodiments of the present application do not limit the number and arrangement of radiation units in each radiation zone. Technical personnel in this field can make adjustments based on actual needs, such as the required bandwidth, directivity, gain and other parameters to meet different application scenarios and performance requirements.

[0077] In some optional embodiments of the present application, the first radiation unit includes at least one first metal patch 22, which is rectangular; and / or the second radiation unit includes at least one second metal patch 23, which is trapezoidal; and / or the third radiation unit includes at least one third metal patch 24, which is strip-shaped; and / or the fourth radiation unit includes at least one fourth metal patch 25, which is strip-shaped.

[0078] In an embodiment of the present application, when the first metal patch 22 is rectangular, the second metal patch 23 is trapezoidal, and the third metal patch 24 and the fourth metal patch 25 are strip-shaped, the rectangular, trapezoidal and strip-shaped shapes are simple and easy to process, which helps to reduce the difficulty of antenna processing.

[0079] It should be noted that, in one embodiment, the radiation sheet 2 is a printed circuit board, and the metal patches (including the first metal patch 22, the second metal patch 23, the third metal patch 24 and the fourth metal patch 25) are formed on the surface of the printed circuit board by an etching process. In addition, the shape of the first metal patch 22 is not limited to a rectangle, the shape of the second metal patch 23 is not limited to a trapezoid, and the shapes of the third metal patch 24 and the fourth metal patch 25 are not limited to a bar. Those skilled in the art can make adjustments according to actual needs, such as the arrangement of the metal patches, the shape of the radiation sheet 2, etc.

[0080] In some optional embodiments of the present application, in one third radiation unit, a plurality of third metal patches 24 are provided, the third metal patches 24 extend along the circumference of the first body 21, and the plurality of third metal patches 24 are arranged at intervals along the direction from the center to the edge of the first body 21. In this way, by providing a plurality of third metal patches 24, the coupling effect can be enhanced, the resonant frequency can be further reduced, and the overall cross-section of the antenna can be reduced, which is conducive to further miniaturization of the antenna.

[0081] It should be noted that the embodiment of the present application does not limit the number of third metal patches 24, and those skilled in the art may adjust it according to actual needs to meet different application scenarios and performance requirements.

[0082] In some optional embodiments of the present application, in a fourth radiation unit, at least one fourth metal patch 25 is provided, the fourth metal patch 25 extends along the circumference of the first body 21, and at least one of the fourth metal patches 25 is electrically connected to the second metal patch 23. In this way, by providing at least one fourth metal patch 25 and electrically connecting at least one fourth metal patch 25 to the second metal patch 23, the electrical size can be increased, the resonant frequency can be further reduced, and the overall cross-section of the antenna can be reduced, which is conducive to further miniaturization of the antenna.

[0083] It should be noted that the embodiment of the present application does not limit the number of third metal patches 24, and those skilled in the art may adjust it according to actual needs to meet different application scenarios and performance requirements.

[0084] In one embodiment, the first body 21 is rectangular, the first radiation zone includes four first radiation units, the four first radiation units are distributed around the center of the first body 21 in a field shape, each first radiation unit is a rectangular first metal patch 22, and the first metal patch 22 has two first edges that are away from the center of the first body 21 and perpendicular to each other. The second radiation zone includes eight second radiation units, one side of a first radiation unit away from the center of the first body 21 is provided with two symmetrically distributed second radiation units, each second radiation unit is a trapezoidal second metal patch 23, one second metal patch 23 corresponds to one first edge, wherein the second metal patch 23 has a second edge away from the first metal patch 22. The third radiation zone includes eight third radiation units, one third radiation unit corresponds to one second radiation unit, each third radiation unit includes five strip-shaped third metal patches 24, and the five third metal patches 24 all extend along the circumference of the first body 21 and are arranged at intervals along the direction from the center to the edge of the first body 21. There are eight fourth radiation units, one fourth radiation unit corresponds to and is electrically connected to a second radiation unit, each fourth radiation unit is a fourth metal patch 25 in a strip shape, and one fourth metal patch 25 is electrically connected to a corresponding second edge. In this way, by reasonably arranging the number and shape of metal patches in each radiation area, the antenna can be made more compact, which is conducive to the miniaturization of the antenna.

[0085] In some optional embodiments of the present application, the second metal patch 23 includes a first edge away from the first metal patch 22; the first body 21 is provided with a plurality of first metallized vias 213, one end of the first metallized vias 213 is electrically connected to the first edge, and the other end of the first metallized vias 213 is electrically connected to the fourth metal patch 25. In this way, by providing the first metallized vias 213, a good conductive path is established between the second metal patch 23 and the fourth metal patch 25, and a reliable electrical connection between the second metal patch 23 and the fourth metal patch 25 is achieved.

[0086] In some optional embodiments of the present application, such as Figure 10 to Figure 11As shown, the broadband low-profile high-efficiency high-isolation antenna further includes: a coupling plate 3, which is disposed between the radiation plate 2 and the feeding structure 5 and is electrically connected to the radiation plate 2 and the feeding structure 5, respectively. In this way, by arranging the coupling plate 3 between the radiation plate 2 and the feeding structure 5, not only can the radiation plate 2 and the feeding structure 5 be electrically connected, but also the energy of the feeding structure 5 can be effectively transmitted to the radiation plate 2, which is beneficial to improving the antenna efficiency.

[0087] Furthermore, the coupling plate 3 includes: a second body 31, a first coupling region and a second coupling region, the second body 31 has a third surface 311 and a fourth surface 312 arranged away from each other along its thickness direction, and the fourth surface 312 is close to the feeding structure 5; the first coupling region is arranged on the third surface 311 and is electrically connected to the radiation plate 2; the second coupling region is arranged on the fourth surface 312 and is electrically connected to the first coupling region and the feeding structure 5 respectively.

[0088] In the embodiment of the present application, since the first coupling region and the second coupling region electrically connected to each other are provided, the energy of the feeding structure 5 can be effectively transmitted to the radiating plate 2 through the electrical connection between the first coupling region and the radiating plate 2, and the electrical connection between the second coupling region and the feeding structure 5, which is beneficial to improve the antenna efficiency. In addition, since the first coupling region is provided on the third surface 311 and the second coupling region is provided on the fourth surface 312, the coupling plate 3 provides coupling paths with different heights, so that the resonant frequency can be optimized, and an equivalent equipotential surface is provided for the antenna, which is beneficial to further improve the antenna efficiency. It should be noted that the embodiment of the present application does not limit the material of the second body 31, and those skilled in the art can make a selection according to actual needs.

[0089] In some optional embodiments of the present application, the first coupling region includes: at least one fifth metal patch 32, the fifth metal patch 32 is coupled to the radiation sheet 2; the second coupling region includes a plurality of sixth metal patches 33, the plurality of sixth metal patches 33 are arranged at intervals along the circumference of the second body 31 and are all electrically connected to the fifth metal patch 32. In this way, by providing the fifth metal patch 32 and the sixth metal patch 33 electrically connected to each other, a reliable electrical connection between the first coupling region and the second coupling region can be achieved, which is conducive to improving the stability and reliability of energy transfer.

[0090] It should be noted that the specific number and shape of the fifth metal patch 32 and the sixth metal patch 33 are not limited in the embodiment of the present application, and those skilled in the art can make adjustments according to actual needs. In one embodiment, one fifth metal patch 32 is provided and is in a ring shape, and four sixth metal patches 33 are provided, and the four sixth metal patches 33 are distributed in a cross shape, and the sixth metal patch 33 has a third edge away from the center of the second body 31, and the third edge is electrically connected to the fifth metal patch 32. Among them, the width of the fifth metal patch 32 at each location in its extension direction can be the same or different, and the width of the sixth metal patch 33 at each location in its extension direction can be the same or different, and those skilled in the art can make adjustments according to actual needs. In addition, in one embodiment, the coupling sheet 3 is a printed circuit board, and the metal patches (including the fifth metal patch 32 and the sixth metal patch 33) are formed on the surface of the printed circuit board by an etching process. Among them, the second plate body can be made of Ruilong 410B sheet material.

[0091] In some optional embodiments of the present application, the second body 31 is provided with a plurality of second metallized vias 313, one end of the second metallized via 313 is electrically connected to the fifth metal patch 32, and the other end of the second metallized via 313 is electrically connected to the sixth metal patch 33. In this way, by providing the second metallized via 313, a good conductive path is established between the fifth metal patch 32 and the sixth metal patch 33, thereby achieving reliable electrical connection between the fifth metal patch 32 and the sixth metal patch 33.

[0092] In some optional embodiments of the present application, such as Fig.12 As shown, the broadband low profile high efficiency high isolation antenna further includes: a dielectric plate 4, and the dielectric plate 4 is arranged between the coupling plate 3 and the base 1. In this way, by arranging the dielectric plate 4 between the coupling plate 3 and the base 1, the resonant frequency of the antenna can be changed and the antenna profile can be reduced.

[0093] It should be noted that the relative dielectric constant of the dielectric plate 4 should be greater than the relative dielectric constant of air. The specific material of the dielectric plate 4 is not limited in the present embodiment. In one embodiment, the dielectric plate 4 can be made of Ruilong 410B. Figure 1 to Figure 2 As shown, threaded holes are respectively arranged at corresponding positions of the radiation sheet 2, the coupling sheet 3, the dielectric plate 4 and the base 1, and the broadband low-profile high-efficiency high-isolation antenna further comprises a dielectric screw 6, which is matched and connected with the threaded holes of each component, so as to reliably fix the radiation sheet 2, the coupling sheet 3 and the dielectric plate 4 on the base 1. Among them, the dielectric screw 6 can be made of polyimide YS20 material.

[0094] In some optional embodiments of the present application, such as Fig.13As shown, the feeding structure 5 includes: an RF connector, a feeding network 51 and a feeding probe 52; the feeding network 51 includes an output end and an input end, and the input end is electrically connected to the RF connector; the feeding probe 52 includes an input connection part 523 and an output connection part 524, the input connection part 523 is electrically connected to the output end, and the output connection part 524 is electrically connected to the coupling plate 3. Specifically, the output connection part 524 and the sixth metal patch 33 of the coupling plate 3 are electrically connected by welding. In this way, through the electrical connection between the RF connector and the input end of the feeding network 51, the electrical connection between the output end of the feeding network 51 and the input connection part 523 of the feeding probe 52, and the electrical connection between the output connection part 524 of the feeding probe 52 and the coupling plate 3, the energy of the feeding structure 5 can be effectively transmitted to the coupling plate 3, and finally transmitted to the radiation plate 2.

[0095] It should be noted that the present embodiment does not limit the material of the feeding probe 52, and those skilled in the art can adjust it according to actual needs. In one embodiment, the feeding probe 52 is made of H62 brass with gold plating.

[0096] Furthermore, if Figures 5 to 7 As shown, the base 1 includes: a substrate 11 and a boss 12, the boss 12 is arranged on the side of the substrate 11 away from the radiation plate 2; the substrate 11 has a fifth surface 111 away from the radiation plate 2, and the boss 12 has a sixth surface 121 away from the radiation plate 2; the feeding network 51 includes a first feeding network 511 and a second feeding network 512, one of the first feeding network 511 and the second feeding network 512 is arranged on the fifth surface 111, and the other is arranged on the sixth surface 121.

[0097] In the embodiment of the present application, since one of the first feeding network 511 and the second feeding network 512 is arranged on the fifth surface 111, and the other is arranged on the sixth surface 121, that is, the first feeding network 511 and the second feeding network 512 are arranged at different heights, the isolation of the output ends of the two feeding structures 5 can be effectively increased. It should be noted that in one of the embodiments, the first feeding network 511 and the second feeding network 512 have the same structure, but the installation method is rotated 90°.

[0098] Further, the feeding probe 52 includes: a first feeding probe 521 and a second feeding probe 522 , the first feeding probe 521 is electrically connected to the first feeding network 511 , and the second feeding probe 522 is electrically connected to the second feeding network 512 , wherein the first feeding probe 521 and the second feeding probe 522 have different lengths.

[0099] In the embodiment of the present application, by setting the first feeding probe 521 and the second feeding probe 522, it is possible to feed two signals with mutually orthogonal polarization directions, so that the antenna has a dual-polarization characteristic. In addition, since the first feeding network 511 and the second feeding network 512 are arranged at different heights, that is, the spacing between the first feeding network 511 and the coupling plate 3, and the spacing between the second feeding network 512 and the coupling plate 3 are different, by using the first feeding probe 521 and the second feeding probe 522 of different lengths, the antenna structure can be better adapted, which is conducive to the reliable electrical connection between the first feeding network 511 and the coupling plate 3, and the second feeding network 512 and the coupling plate 3.

[0100] In one embodiment, four sixth metal patches 33 are provided; the first feeding network 511 includes a first input terminal and two first output terminals, and the second feeding network 512 includes a second input terminal and two second output terminals; two first feeding probes 521 and two second feeding probes 522 are provided respectively, and the input connection part 523 and the output connection part 524 of a first feeding probe 521 are electrically connected to a first output terminal and a sixth metal patch 33 respectively, and the input connection part 523 and the output connection part 524 of a second feeding probe 522 are electrically connected to a second output terminal and a sixth metal patch 33 respectively, and the center line of the two first feeding probes 521 and the center line of the two second feeding probes 522 are perpendicular to each other.

[0101] In some optional embodiments of the present application, such as Figure 13 to Figure 14 As shown, the feeding probe 52 further includes a protrusion 525, which is arranged in the circumference of the output connection portion 524, and the protrusion 525 is electrically connected to the coupling piece 3. Specifically, the protrusion 525 and the sixth metal patch 33 are electrically connected by welding. In this way, since the protrusion 525 is arranged in the circumference of the output connection portion 524, and the protrusion 525 is electrically connected to the coupling piece 3, not only can the feeding probe 52 and the coupling piece 3 be reliably electrically connected together, but also the bandwidth can be expanded.

[0102] It should be noted that the protrusion 525 of the embodiment of the present application can be provided with only one or more (i.e., greater than or equal to two), which is not limited here, and those skilled in the art can make adjustments according to actual needs. Among them, when there are multiple protrusions 525, the multiple protrusions 525 are arranged at intervals along the circumference of the output connection portion 524. In this way, by welding the multiple protrusions 525 to the coupling plate 3, the electrical connection reliability between the feeding probe 52 and the coupling plate 3 can be further improved, and the bandwidth can be further expanded. In one embodiment, as Fig.14 As shown, there are two protrusions 525 , and the two protrusions 525 are spaced apart and symmetrically distributed along the circumference of the output connection portion 524 .

[0103] In some optional embodiments of the present application, such as Figures 5 and 6 As shown, the broadband low-profile high-efficiency high-isolation antenna further includes an isolation structure 13, which is fixedly connected to the base 1 and surrounds at least a portion of the feeding probe 52. Specifically, the isolation structure 13 includes: a first sleeve 131 and a second sleeve 132, the second sleeve 132 is sleeved on the first sleeve 131 and has a gap with the first sleeve 131, and the feeding probe 52 is inserted into the first sleeve 131.

[0104] In the embodiment of the present application, an isolation structure 13 is provided, the isolation structure 13 includes a first sleeve 131 and a second sleeve 132 with a gap, and the feeding probe 52 is passed through the first sleeve 131, so that a dual-conductor structure can be formed, thereby improving the polarization isolation of the antenna.

[0105] It should be noted that the number of isolation structures 13 should be consistent with the number of feeding probes 52 and the positions should correspond. In addition, in order to improve the overall structural strength of the base 1, the substrate 11, the boss 12 and the isolation structure 13 can be an integrally formed structure. In addition, in order to facilitate the electrical connection between the feeding probe 52 and the coupling plate 3, the dielectric plate 4 is provided with a mounting hole 41 at a corresponding position of the isolation structure 13, and the isolation structure 13 is penetrated through the mounting hole 41, so that the feeding probe 52 installed in the isolation structure 13 is electrically connected to the coupling plate 3.

[0106] In some optional embodiments of the present application, such as Figure 5 and Figure 7 As shown, the broadband low-profile high-efficiency high-isolation antenna further includes a plurality of laminated structures 14, which are arranged on the base 1 and spaced apart along the circumference of the radiation sheet 2, wherein each laminated structure 14 includes a plurality of metal plates spaced apart along the thickness direction of the base 1. By providing a plurality of metal plates, more equivalent equipotential surfaces can be provided, which is beneficial to improving the overall efficiency of the antenna.

[0107] In summary, the resonant frequency of the antenna is mainly constrained by the radiation plate 2, the coupling plate 3, the filling medium, the feeding probe 52 and the isolation structure 13, the cross-sectional height is mainly constrained by the filling medium, the antenna efficiency is mainly constrained by the radiation plate 2 and the laminated structure 14, and the isolation is mainly constrained by the feeding structure 5 and the base 1. In addition, after the antenna efficiency is optimized to reach the maximum value, the resonant frequency of the antenna will shift. Therefore, it is only necessary to first adjust the parameters that have a greater impact on the resonant frequency of the antenna, so that the antenna resonates, and then adjust the parameters that have a greater impact on the efficiency. At this time, the frequency offset that occurs can be optimized again by fine-tuning the parameters that affect the resonant frequency, and the antenna isolation has almost no effect on the antenna resonant frequency and efficiency. Therefore, the antenna isolation is optimized last.

[0108] Based on the above theory, a method for manufacturing a broadband, low-profile, high-efficiency, and high-isolation antenna according to an embodiment of the present application is provided below:

[0109] Step S1: Optimize the initial size of the radiation plate 2 and the initial size of the coupling plate 3, the height and dielectric constant of the filling medium, the size of the feeding probe 52, and the size and height of the isolation structure 13 on the base 1 to obtain a first optimized structure, so that the first optimized structure operates in the target resonant frequency band.

[0110] Generally, for the design of antenna, simulation software is first used as the basis, and the relationship between the size and structure of each component is input for simulation test. After the design requirements are met, the corresponding components are made with the obtained size and then installed and fixed, and the antenna required by the design can be obtained. Based on this theory, it is first necessary to make the antenna work in the target resonant frequency band, for example: the target resonant frequency band is 690MHz~960MHz, and after the first optimized structure is obtained, the first optimized structure is made to work in 690MHz~960MHz. The better simulation test software can choose HFSS (High Frequency Structure Simu lator, a three-dimensional electromagnetic simulation software launched by Ansoft), and HFSS can be used to optimize the initial size of the radiation plate 2 and the initial size of the coupling plate 3, the height of the filling medium, the size of the feeding probe 52, and the size and height of the isolation structure 13 on the base 1 to obtain the first optimized structure.

[0111] Step S2: Based on the first optimized structure, the size of the third radiation unit of the radiation plate 2 and the size of the laminated structure 14 of the base 1 are optimized, and the second optimized structure is obtained after the efficiency reaches the optimal value, and the working frequency band of the second optimized structure is slightly biased towards the target resonant frequency band.

[0112] Due to the characteristics of the antenna itself, when the efficiency reaches the optimal value, the resonant frequency of the antenna shifts, that is, the working frequency band of the second optimized structure is slightly biased towards the target resonant frequency band, so a third optimization is required.

[0113] Step S3: Based on the second optimized structure, the size of the radiation plate 2 and the size of the coupling plate 3 are optimized again to obtain a third optimized structure, so that the efficiency of the third optimized structure reaches an optimal value and the third optimized structure operates in the target resonant frequency band.

[0114] Since the working frequency band of the second optimized structure is slightly biased towards the target resonant frequency band, the HFSS simulation test is performed again to fine-tune the size of the radiation plate 2 and the size of the coupling plate 3, so that the antenna resonates within 690MHz to 960MHz after this optimization. In this way, the size of the radiation plate 2, the size of the coupling plate 3, the height of the filling medium, the size of the feeding probe 52, and the size of the laminated structure 14 and the isolation structure 13 on the base 1 can be finally determined. In this way, except for the parameters of the boss 12 of the base 1, the parameters of the remaining components have been determined.

[0115] Step S4: Based on the center frequency of the target resonant frequency band, the size of the boss 12 of the base 1 is optimized so that the antenna isolation reaches an optimal value to obtain a fourth optimized structure.

[0116] Step S5: Based on the center frequency of the target resonant frequency band, the thickness and dielectric constant of the dielectric plate 4, the impedance matching requirements and the feeding point position, determine the line width and line length of each microstrip line in the feeding network 51, and then determine the size of the feeding network 51 of the third optimized structure.

[0117] The method for determining the impedance, line width and line length of the feed network 51 includes:

[0118] First, determine the center frequency of the feeding network 51 (determined based on the target frequency band); then determine the thickness and dielectric constant of the dielectric plate 4 (determined by conventional means); finally match the input port and output port impedance to 50Ω.

[0119] With an initial value of 50Ω impedance, line width and line length, after optimization through HFSS simulation test, the line width and line length of each microstrip line can be obtained according to the center frequency, the thickness of the dielectric plate 4, the dielectric constant of the dielectric plate 4, the input impedance, the output impedance and the feeding point position (i.e., the position where the feeding probe 52 is connected to the feeding network 51).

[0120] Assume that the center frequency of the feed structure 5 is set at 825MHz, and the sweep frequency range is: 690MHz~960MHz, combined with Figure 15 to Figure 16 It can be seen that the input signal of the input end of the feed network 51 is divided into four paths through the Wilkins power divider. The resistor R is an absorption resistor, which can increase the isolation of the output end and reduce the cross polarization of the antenna. The two signals output by the Wilkins power divider produce a 180° phase difference through a 180° phase shifter. It is designed on Rogers board RO4350B with a thickness of 0.762mm and a dielectric constant of 3.66.

[0121] The impedance values, line widths and line lengths of the feed network 51 are:

[0122] λg=216.6mm

[0123] Z1 = 70.71Ω, microstrip line width 0.85mm;

[0124] Z2 = 63Ω, microstrip line width 1mm;

[0125] Z3 = 81Ω, microstrip line width 0.6mm;

[0126] Z4=50Ω, microstrip line width 1.6mm.

[0127] The above values ​​are set as initial values, and after optimization through HFSS simulation test, the actual line width and line length of each section of microstrip line are obtained according to the index requirements and the feeding point position. It should be noted that the above process of determining the actual line width and line length of each section of microstrip line can be implemented by referring to conventional technology, so it will not be elaborated in detail.

[0128] Step S6: Based on the fourth optimized structure and the feed network 51 of the determined size, the broadband low-profile high-efficiency high-isolation antenna of the embodiment of the present application can be manufactured and assembled. After testing, the working frequency band of the broadband low-profile high-efficiency high-isolation antenna of the embodiment of the present application can cover 690MHz to 960MHz, and the total efficiency of the antenna is greater than 85%, and the isolation is less than -20dB, which has extremely high practicality.

[0129] In summary, the broadband, low-profile, high-efficiency, and high-isolation antenna provided by the embodiments of the present application has at least the following advantages:

[0130] In the embodiment of the present application, the radiation sheet is provided with at least three radiation zones, and at least one of the radiation zones is electrically connected to the feed structure. In this way, by electrically connecting at least one of the radiation zones to the feed structure, the reception and transmission of signals can be realized. More importantly, since at least three radiation zones are provided, the bandwidth can be expanded without increasing the size of the antenna through the mutual coupling of at least three radiation zones, thereby effectively utilizing spectrum resources, which is beneficial to improving the communication performance and communication efficiency of the communication device. In addition, through the mutual coupling of at least three radiation zones, the resonant frequency can also be reduced, and the antenna profile can be reduced, thereby further realizing the miniaturization of the antenna, which is beneficial to reducing the cost of the antenna and improving the versatility of the antenna.

[0131] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0132] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A broadband, low-profile, high-efficiency, high-isolation antenna, characterized in that: include: Base, radiator and feeding structure; The feeding structure is arranged on the base; The radiation sheet is arranged on a side of the feeding structure away from the base, and the radiation sheet includes at least three radiation areas, at least three of the radiation areas are arranged at intervals, and at least one of the radiation areas is electrically connected to the feeding structure.

2. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 1, characterized in that: The radiation sheet further comprises a first body, wherein the first body comprises a first surface and a second surface which are arranged away from each other along a thickness direction thereof, and the second surface is close to the feeding structure; The radiation zone includes a first radiation zone, a second radiation zone, a third radiation zone and a fourth radiation zone. The first radiation zone, the second radiation zone and the third radiation zone are sequentially arranged on the first surface along the direction from the center to the edge of the first body, and the first radiation zone is electrically connected to the feeding structure. The fourth radiation zone is arranged on the second surface and is electrically connected to the second radiation zone.

3. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 2, characterized in that: The first radiation zone includes: a plurality of first radiation units, the plurality of first radiation units are arranged at intervals along the circumferential direction of the first body, and each of the first radiation units is electrically connected to the feeding structure.

4. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 3, characterized in that: The second radiation zone includes: a plurality of second radiation units, the plurality of second radiation units are arranged at intervals along the circumferential direction of the first body, and at least one second radiation unit corresponds to one first radiation unit.

5. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 4, characterized in that: The third radiation zone includes: a plurality of third radiation units, the plurality of third radiation units are arranged at intervals along the circumferential direction of the first body, and at least one of the third radiation units corresponds to one of the second radiation units.

6. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 5, characterized in that: The fourth radiation zone includes: a plurality of fourth radiation units, the plurality of fourth radiation units are arranged at intervals along the circumferential direction of the first body, and at least one of the fourth radiation units is electrically connected to one of the second radiation units.

7. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 6, characterized in that: The first radiation unit includes at least one first metal patch, and the first metal patch is rectangular; And / or, the second radiation unit includes at least one second metal patch, and the second metal patch is trapezoidal; And / or, the third radiation unit includes at least one third metal patch, and the third metal patch is in a strip shape; And / or, the fourth radiation unit includes at least one fourth metal patch, and the fourth metal patch is in a strip shape.

8. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 7, characterized in that: In one of the third radiation units, a plurality of the third metal patches are provided, the third metal patches extend along the circumference of the first body, and the plurality of the third metal patches are arranged at intervals along the direction from the center to the edge of the first body.

9. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 7, characterized in that: In one of the fourth radiation units, at least one fourth metal patch is provided, the fourth metal patch extends along the circumference of the first body, and at least one of the fourth metal patches is electrically connected to the second metal patch.

10. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 7, characterized in that: The second metal patch includes a first edge facing away from the first metal patch; The first body is provided with a plurality of first metallized vias, one end of the first metallized via is electrically connected to the first edge, and the other end of the first metallized via is electrically connected to the fourth metal patch.

11. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 1, characterized in that: The broadband, low-profile, high-efficiency, high-isolation antenna further includes: a coupling plate, which is disposed between the radiation plate and the feeding structure and is electrically connected to the radiation plate and the feeding structure respectively.

12. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 11, characterized in that: The coupling sheet comprises: a second body, a first coupling region and a second coupling region, The second body has a third surface and a fourth surface which are arranged away from each other along the thickness direction thereof, and the fourth surface is close to the feeding structure; The first coupling region is disposed on the third surface and is electrically connected to the radiation sheet; The second coupling region is disposed on the fourth surface and is electrically connected to the first coupling region and the feeding structure respectively.

13. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 12, characterized in that: The first coupling region includes: at least one fifth metal patch, the fifth metal patch coupled to the radiation patch; The second coupling region includes a plurality of sixth metal patches, which are spaced apart along the circumference of the second body and are all electrically connected to the fifth metal patch.

14. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 13, characterized in that: The second body is provided with a plurality of second metallized vias, one end of the second metallized via is electrically connected to the fifth metal patch, and the other end of the second metallized via is electrically connected to the sixth metal patch.

15. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 11, characterized in that: The broadband, low-profile, high-efficiency, and high-isolation antenna further includes a dielectric plate, which is disposed between the coupling plate and the base.

16. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 11, characterized in that: The feeding structure includes: a radio frequency connector, a feeding network and a feeding probe; The feed network comprises an output end and an input end, wherein the input end is electrically connected to the RF connector; The feeding probe comprises an input connection portion and an output connection portion, the input connection portion is electrically connected to the output end, and the output connection portion is electrically connected to the coupling plate.

17. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 16, characterized in that: The feeding probe further includes a protrusion, which is arranged in a circumferential direction of the output connection portion and is electrically connected to the coupling piece.

18. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 17, characterized in that: A plurality of the protrusions are provided, and the plurality of the protrusions are arranged at intervals along the circumferential direction of the output connection portion.

19. The broadband, low-profile, high-efficiency, high-isolation antenna according to any one of claims 16 to 18, characterized in that: The base comprises: a substrate and a boss, wherein the boss is arranged on a side of the substrate away from the radiation sheet; The substrate has a fifth surface facing away from the radiation sheet, and the boss has a sixth surface facing away from the radiation sheet; The feeding network includes a first feeding network and a second feeding network, one of the first feeding network and the second feeding network is disposed on the fifth surface, and the other of the first feeding network and the second feeding network is disposed on the sixth surface.

20. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 19, characterized in that: The feeding probe comprises: a first feeding probe and a second feeding probe, the first feeding probe is electrically connected to the first feeding network, the second feeding probe is electrically connected to the second feeding network, wherein the first feeding probe and the second feeding probe have different lengths.

21. The broadband, low-profile, high-efficiency, high-isolation antenna according to any one of claims 16 to 18, characterized in that: The broadband, low-profile, high-efficiency, high-isolation antenna further includes an isolation structure, which is fixedly connected to the base and disposed around at least a portion of the feeding probe.

22. The broadband, low-profile, high-efficiency, high-isolation antenna according to claim 21, characterized in that: The isolation structure comprises: a first sleeve and a second sleeve, wherein the second sleeve is sleeved on the first sleeve and has a gap with the first sleeve, and the feeding probe is passed through the first sleeve.

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