Ceiling antenna and electronic equipment

Abstract

A ceiling antenna (10) comprises: an antenna base (1); the vertical polarization antenna (2) comprises a reflecting plate (21) and an antenna oscillator (22), and the reflecting plate (21) is located between the antenna base (1) and the antenna oscillator (22); the plurality of patch units (31) are distributed around the antenna oscillator (22) at intervals and are positioned on one side, far away from the antenna base (1), of the reflecting plate (21); the passive frequency mixing module (4) comprises a dielectric substrate (41), a passive frequency mixing circuit (42) and a power division network (43), the passive frequency mixing circuit (42) is electrically connected with the antenna oscillator (22) and the power division network (43), and the power division network (43) is electrically connected with the patch units (31). On the basis of the low-frequency signal transmitted by the DAS, a 5G signal is obtained under the action of the passive mixer circuit (42), so that 5G communication of the ceiling antenna (10) is realized, and the indoor 5G communication quality is improved. (Figure 1)

Description

Ceiling antennas and electronic equipment Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a ceiling antenna and electronic equipment. Background Art

[0002] Ceiling antennas are used for indoor wireless communications. They are typically installed on the ceiling, providing wireless signal coverage within a radius of several dozen meters. Ceiling antennas are commonly found in conference venues, hotels, office buildings, and cinemas. In the 5G era, 5G communications will primarily occur indoors. However, current distributed antenna systems (DASs) struggle to effectively transmit 5G signals, making indoor 5G communications a pressing issue.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0004] Summary of the Invention

[0005] The present disclosure provides a ceiling-mounted antenna and electronic equipment.

[0006] According to one aspect of the present disclosure, there is provided a ceiling-mounted antenna, comprising:

[0007] Antenna base;

[0008] a vertically polarized antenna fixed on the antenna base and comprising a reflector and an antenna element, wherein the reflector is located between the antenna base and the antenna element, and an installation space is enclosed by the reflector and the antenna base;

[0009] A horizontally polarized antenna, comprising a plurality of patch units, wherein the plurality of patch units are spaced apart around the antenna element and are located on a side of the reflector away from the antenna base;

[0010] A passive mixing module is located in the installation space and includes a dielectric substrate and a passive mixing circuit and a power division network integrated on the dielectric substrate. The passive mixing circuit is electrically connected to the antenna element and the power division network, respectively, and is used to output a 5G signal to the power division network. The power division network is electrically connected to multiple patch units, respectively, and the passive mixing circuit is used to receive a feed signal.

[0011] According to any one of the ceiling antennas described in the present disclosure, the reflective plate includes a first reflective component and a second reflective component, the first reflective component and the second reflective component are both annular, and the outer edge of the first reflective component is connected to the inner edge of the second reflective component;

[0012] The first reflective component is arranged opposite to the antenna vibrator, and the second reflective component includes multiple splicing plates and multiple isolation parts. The multiple splicing plates are spliced ​​in sequence along the circumference of the antenna vibrator, and each of the splicing plates forms the same angle with the antenna base. An isolation part is fixed between two adjacent splicing plates. The multiple splicing plates correspond one-to-one to the multiple patch units, and each patch unit is fixed on the corresponding splicing plate.

[0013] According to any ceiling antenna described in the present disclosure, the second reflective component further includes a plurality of filling plates, a gap facing away from the first reflective component is provided between two adjacent splicing plates, and each of the gaps has a filling plate.

[0014] According to any one of the ceiling antennas of the present disclosure, the isolation member includes a first partition plate and a second partition plate, and the second partition plate includes a first side plate and a second side plate in a V-shape;

[0015] The first partition is fixed at the joint of the two adjacent splicing panels, and the edges on the same side of the first side panel and the second side panel have flanges. The flanges of the first side panel and the second side panel are fixedly connected to one of the filling panels, and the V-shaped opening formed by the first side panel and the second side panel faces away from the first partition.

[0016] According to any one of the ceiling antennas of the present disclosure, the patch unit comprises a first metal patch and a second metal patch sequentially arranged in a direction away from the reflector;

[0017] The orthographic projections of the first metal patch and the second metal patch along the thickness direction of the antenna base at least partially overlap.

[0018] According to any ceiling antenna described in the present disclosure, the ceiling antenna further includes a first support member, the first support member is fixed on the reflector, and the first metal patch and the second metal patch are both limited on the first support member.

[0019] According to any one of the ceiling antennas of the present disclosure, the first support member comprises a fixing bolt, two fixing sleeves and a locking nut;

[0020] One end of the fixing bolt is fixedly connected to the reflector, the two fixing sleeves are both sleeved on the fixing bolt, and the locking nut is tightened on the fixing bolt;

[0021] The first metal patch is limited between the two fixing sleeves, and the second metal patch is limited between the fixing sleeve away from the reflector and the locking nut.

[0022] According to any one of the ceiling antennas of the present disclosure, the first support member comprises a first threaded column, a second threaded column and a locking screw;

[0023] The first threaded column and the second threaded column both have an external threaded end and an internal threaded end. The external threaded end of the first threaded column is fixedly connected to the reflective plate, the external threaded end of the second threaded column passes through the first metal patch and is tightened in the internal threaded end of the first threaded column, and the locking screw passes through the second metal patch and is tightened in the internal threaded end of the second threaded column.

[0024] According to any one of the ceiling antennas of the present disclosure, the first support member comprises a fixing frame, the fixing frame having a first slot and a second slot spaced apart from each other;

[0025] The fixing frame is fixed to the reflecting plate, and the first metal patch and the second metal patch are respectively limited in the first slot and the second slot.

[0026] According to any one of the ceiling-mounted antennas described in the present disclosure, the passive mixing circuit includes a frequency division circuit, a synthesis circuit and a mixing circuit;

[0027] The frequency division circuit is electrically connected to the synthesis circuit and the frequency mixing circuit respectively, the synthesis circuit is electrically connected to the antenna element, and the frequency mixing circuit is electrically connected to the power division network;

[0028] The frequency division circuit is used to receive a feed signal and divide the feed signal into an intermediate frequency signal, a local oscillator signal and multiple communication signals. The synthesis circuit is used to receive multiple communication signals and synthesize them into a vertically polarized signal, and output the vertically polarized signal to the antenna element. The mixing circuit is used to receive the intermediate frequency signal and the local oscillator signal and synthesize them into a horizontally polarized signal, and output the horizontally polarized signal to the power division network. The horizontally polarized signal is a 5G signal.

[0029] According to any one of the ceiling antennas described in the present disclosure, the mixing circuit includes two first baluns, a second balun, a mixer, and a filter;

[0030] The input ends of the two first baluns are electrically connected to the frequency division circuit and are used to receive the intermediate frequency signal and the local oscillator signal respectively. The output ends of the two first baluns and the input end of the second balun are electrically connected to the mixer. The output end of the second balun is electrically connected to the filter, and the filter is electrically connected to the power division network.

[0031] According to any one of the ceiling antennas described in the present disclosure, the ceiling antenna comprises a first coaxial cable and a plurality of second coaxial cables, wherein the plurality of second coaxial cables correspond one-to-one to the plurality of patch units;

[0032] The first coaxial cable and the second coaxial cable both include a core, a dielectric layer, a reference electrode layer and a protective layer that are nested in sequence. The core of the first coaxial cable is electrically connected to the synthesis circuit and the antenna element, respectively. The core of each second coaxial cable is electrically connected to the power division network and the corresponding patch unit, respectively. The reference electrode layer of the first coaxial cable and the reference electrode layer of each second coaxial cable are electrically connected to the reflector.

[0033] According to any ceiling-mounted antenna described in the present disclosure, the ceiling-mounted antenna further includes a second support member, one end of the second support member is fixedly connected to the reflector plate, and the second end of the second support member is fixedly connected to the antenna element.

[0034] According to any one of the ceiling-mounted antennas described in the present disclosure, the ceiling-mounted antenna further includes an antenna cover, which is buckled on the vertically polarized antenna and fixedly connected to the antenna base.

[0035] According to any one of the ceiling antennas described in the present disclosure, the ceiling antenna further comprises an external feeder, and the antenna base comprises a base body;

[0036] The base body has a first through hole. One end of the external feeder passes through the first through hole and is electrically connected to the passive mixing circuit. The other end of the external feeder is used to be electrically connected to an external cable.

[0037] According to any one of the ceiling antennas described in the present disclosure, the antenna base further comprises an elastic sleeve, wherein the elastic sleeve comprises a sleeve body and limiting bosses located at both ends of the sleeve body;

[0038] The sleeve body is located in the first through hole, and the limiting bosses at both ends of the sleeve body are respectively limited on both sides of the base body. The external feeder passes through the sleeve body and is interference fit with the sleeve body.

[0039] According to any ceiling antenna described in the present disclosure, the antenna base further includes a fixing plate;

[0040] The fixing plate is fixedly connected to the base body and has a second through hole. The external feeder passes through the second through hole and is limited in the second through hole.

[0041] According to any ceiling antenna described in the present disclosure, the antenna base also includes a plurality of locking bolts, the fixing plate has a plurality of fixing holes corresponding to the plurality of locking bolts, each of the locking bolts passes through the corresponding fixing hole and is fixedly connected to the base body.

[0042] According to any ceiling antenna described in the present disclosure, the surface of the fixing plate facing the base body has a plurality of fixing clips, the hole wall of the first through hole has a plurality of slots, the plurality of fixing clips correspond one-to-one to the plurality of slots, and each of the fixing clips can be detachably limited in the corresponding slot.

[0043] According to any one of the ceiling antennas described in the present disclosure, the surface of the fixing plate facing the base body has a plurality of elastic buckles, each of the elastic buckles includes a connecting rod and an elastic buckle, and the connecting rod is connected to the fixing plate and the elastic buckle respectively;

[0044] The hole wall of the first through hole has a step surface facing away from the fixing plate, and the base body has a plurality of limiting holes passing through the step surface. The plurality of elastic clips correspond one-to-one to the plurality of limiting holes, and each elastic clip passes through the corresponding limiting hole and is limited on the step surface.

[0045] According to any of the ceiling antennas described in the present disclosure, the fixing plate includes a first half plate and a second half plate, the first half plate and the second half plate are buckled and fixedly connected, and the second through hole is formed after being buckled.

[0046] According to any ceiling antenna described in the present disclosure, the fixing plate also includes a fixing screw, the first half plate has a third through hole facing the second half plate, the second half plate has a threaded hole facing the first half plate, and the fixing screw passes through the third through hole and is tightened in the threaded hole.

[0047] According to any ceiling antenna described in the present disclosure, the side surface of the first half plate facing the second half plate has a plurality of locking buckles, and the side surface of the second half plate facing the first half plate has a plurality of locking grooves, the plurality of locking buckles correspond one-to-one to the plurality of locking grooves, and each of the locking buckles is limited in the corresponding locking groove.

[0048] According to any one of the ceiling antennas described in the present disclosure, the first half plate has a first fixing hole, the second half plate has a second fixing hole, and the base body has a first locking hole and a second locking hole corresponding to the first fixing hole and the second fixing hole respectively;

[0049] The distance between the first fixing hole and the second fixing hole is greater than the distance between the first locking hole and the second locking hole.

[0050] According to one aspect of the present disclosure, an electronic device is provided, comprising the ceiling antenna described in the above aspect.

[0051] The embodiments of the present disclosure include at least the following technical effects:

[0052] In the embodiment of the present disclosure, a ceiling antenna including a passive mixing module is provided, and a low-frequency signal transmitted based on the DAS can be mixed under the action of a passive mixing circuit to obtain a 5G signal, thereby realizing 5G communication of the ceiling antenna, and then when the ceiling antenna is installed indoors, 5G communication indoors can be realized, thereby improving communication quality; in addition, the power division network of the horizontally polarized antenna is provided in the installation space surrounded by the reflector and the antenna base, and is integrated with the passive mixing circuit on the same dielectric substrate, which can improve the space utilization rate in the installation space on the one hand, and save the feeding components between the passive mixing circuit and the power division network on the other hand, thereby simplifying the routing design of the ceiling antenna, and then simplifying the structural design of the ceiling antenna.

[0053] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0055] FIG1 is a schematic diagram of an explosion effect of a ceiling-mounted antenna provided in an embodiment of the present disclosure.

[0056] FIG2 is an exploded line diagram of a ceiling-mounted antenna provided in an embodiment of the present disclosure.

[0057] FIG3 is a schematic diagram of an axial perspective structure of a ceiling-mounted antenna provided in an embodiment of the present disclosure.

[0058] FIG4 is a schematic diagram of an axial perspective structure of a reflector provided in an embodiment of the present disclosure.

[0059] FIG5 is a circuit diagram of a passive mixing circuit provided in an embodiment of the present disclosure.

[0060] FIG6 is a circuit diagram of a frequency mixing circuit provided in an embodiment of the present disclosure.

[0061] FIG7 is a schematic diagram of a top view of a ceiling-mounted antenna provided in an embodiment of the present disclosure.

[0062] FIG8 is a schematic structural diagram of a first coaxial cable provided in an embodiment of the present disclosure.

[0063] FIG9 is a schematic structural diagram of a vertically polarized antenna provided in an embodiment of the present disclosure.

[0064] FIG10 is a schematic diagram of an axial perspective structure of another ceiling-mounted antenna provided in an embodiment of the present disclosure.

[0065] FIG11 is a schematic structural diagram of a patch unit fixing method provided in an embodiment of the present disclosure.

[0066] FIG12 is a schematic structural diagram of another patch unit fixing method provided in an embodiment of the present disclosure.

[0067] FIG13 is a structural diagram of another patch unit fixing method provided in an embodiment of the present disclosure.

[0068] FIG14 is a schematic diagram of the bottom-up structure of an antenna base provided in an embodiment of the present disclosure.

[0069] FIG15 is a structural diagram of a fixing method of an external feeder provided in an embodiment of the present disclosure.

[0070] FIG16 is a schematic structural diagram of an elastic sleeve provided in an embodiment of the present disclosure.

[0071] FIG17 is a schematic structural diagram of another method for fixing an external feeder provided in an embodiment of the present disclosure.

[0072] FIG18 is a schematic structural diagram of a fixing plate provided in an embodiment of the present disclosure.

[0073] FIG19 is a schematic structural diagram of another fixing plate provided in an embodiment of the present disclosure.

[0074] FIG20 is a schematic diagram of a partial front view structure of another base body provided in an embodiment of the present disclosure.

[0075] FIG21 is a structural diagram of another method for fixing an external feeder provided in an embodiment of the present disclosure.

[0076] FIG22 is a structural schematic diagram of a fixing method of a fixing plate provided in an embodiment of the present disclosure.

[0077] FIG23 is a schematic structural diagram of another fixing plate provided in an embodiment of the present disclosure.

[0078] FIG24 is a schematic structural diagram of another method for fixing an external feeder provided in an embodiment of the present disclosure.

[0079] FIG25 is a schematic structural diagram of another fixing plate provided in an embodiment of the present disclosure.

[0080] FIG26 is a schematic structural diagram of another method for fixing an external feeder provided in an embodiment of the present disclosure.

[0081] FIG27 is a schematic structural diagram of another fixing plate provided in an embodiment of the present disclosure.

[0082] FIG28 is a schematic diagram of a partial bottom view of a base body provided in an embodiment of the present disclosure.

[0083] FIG29 is a voltage standing wave ratio curve of a vertically polarized antenna provided in an embodiment of the present disclosure.

[0084] FIG30 is a directional diagram of a vertically polarized antenna provided in an embodiment of the present disclosure.

[0085] FIG31 is a voltage standing wave ratio curve of a horizontally polarized antenna provided in an embodiment of the present disclosure.

[0086] FIG32 is a directional diagram of a horizontally polarized antenna provided in an embodiment of the present disclosure.

[0087] FIG33 is an H-plane radiation pattern of a horizontally polarized antenna provided in an embodiment of the present disclosure when the pitch angle is 60 degrees.

[0088] FIG34 is a voltage standing wave ratio curve of another vertically polarized antenna provided in an embodiment of the present disclosure.

[0089] FIG35 is a directional diagram of another vertically polarized antenna provided in an embodiment of the present disclosure.

[0090] FIG36 is a voltage standing wave ratio curve of another horizontally polarized antenna provided in an embodiment of the present disclosure.

[0091] FIG37 is a directional diagram of another horizontally polarized antenna provided in an embodiment of the present disclosure.

[0092] FIG38 is an H-plane radiation pattern of another horizontally polarized antenna provided in an embodiment of the present disclosure when the elevation angle is 60 degrees.

[0093] Figures: 10, ceiling antenna; 1, antenna base; 2, vertically polarized antenna; 3, horizontally polarized antenna; 4, passive mixer module; 5, antenna cover; 6, external feeder; 7, first support member; 8, second support member; 11, base body; 12, elastic sleeve; 13, fixing plate; 14, locking bolt; 111, first through hole; 112, slot; 113, stepped surface; 114, limiting hole; 115, first locking hole; 116, second locking hole; 117, boss; 121, sleeve body; 122, limiting boss; 131, second through hole; 132, fixing hole; 133, fixing buckle; 134, elastic buckle; 135, first half plate; 136, second half plate; 137, fixing screw; 1351, third through hole; 1352, locking buckle; 1353, first fixing hole; 1361, threaded hole; 1362, locking slot; 1363, second fixing hole; 21, reflector; 22, antenna element; 23, first coaxial cable; 211, second reflector assembly; 212, first reflector assembly; 2111, splicing plate; 2112, filling plate; 2113, spacer; 2114, first partition; 2115, second partition; 2116, first side plate; 2117, second side plate; 2118, flange; 231, core; 232, dielectric layer; 233, reference electrode layer; 234, protective layer; 31, patch unit; 32, first metal patch; 33, second metal patch; 34, second coaxial cable; 41. Dielectric substrate; 42. Passive mixing circuit; 43. Power division network; 421. Frequency division circuit; 422. Synthesis circuit; 423. Mixing circuit; 4231. First balun; 4232. Second balun; 4233. Mixer; 4234. Filter; 71. Fixing bolt; 72. Fixing sleeve; 73. Locking nut; 74. First threaded column; 75. Second threaded column; 76. Locking screw; 77. Fixing bracket; 78. First slot; 79. Second slot. DETAILED DESCRIPTION

[0094] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0095] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0096] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0097] Figure 1 illustrates an exploded view of a ceiling antenna 10 provided in an embodiment of the present disclosure. Figure 2 illustrates an exploded line view of a ceiling antenna 10 provided in an embodiment of the present disclosure. Figure 3 illustrates an axial perspective view of a ceiling antenna 10 provided in an embodiment of the present disclosure. Figure 4 illustrates an axial perspective view of a reflector provided in an embodiment of the present disclosure. As shown in Figures 1, 2, 3, and 4, the ceiling antenna 10 includes an antenna base 1, a vertically polarized antenna 2, a horizontally polarized antenna 3, and a passive mixing module 4. The vertically polarized antenna 2 is fixed on the antenna base 1 and includes a reflector 21 and an antenna element 22. The reflector 21 is located between the antenna base 1 and the antenna element 22, and the reflector 21 and the antenna base 1 form an installation space; the horizontally polarized antenna 3 includes a plurality of patch units 31, which are spaced apart around the antenna element 22 and located on the side of the reflector 21 away from the antenna base 1; the passive mixing module 4 is located in the installation space surrounded by the reflector 21 and the antenna base 1, and includes a dielectric substrate 41 and a passive mixing circuit 42 and a power division network 43 integrated on the dielectric substrate 41. The passive mixing circuit 42 is electrically connected to the antenna element 22 and the power division network 43, respectively, and is used to output 5G signals to the power division network 43. The power division network 43 is electrically connected to the plurality of patch units 31, respectively, and the passive mixing circuit 42 is used to receive the feed signal.

[0098] In the embodiment of the present disclosure, a ceiling antenna 10 including a passive mixing module 4 is provided, and a low-frequency signal transmitted based on the DAS can be mixed under the action of a passive mixing circuit 42 to obtain a 5G signal, thereby realizing 5G communication of the ceiling antenna 10, and then when the ceiling antenna 10 is installed indoors, 5G communication indoors is realized, thereby improving communication quality; in addition, the power division network 43 of the horizontally polarized antenna 3 is provided in the installation space surrounded by the reflector 21 and the antenna base 1, and is integrated with the passive mixing circuit 42 on the same dielectric substrate 41, which can improve the space utilization rate in the installation space on the one hand, and save the feeding components between the passive mixing circuit 42 and the power division network 43 on the other hand, thereby simplifying the routing design of the ceiling antenna 10, and then simplifying the structural design of the ceiling antenna 10.

[0099] In some embodiments, as shown in FIG. 1 , FIG. 2 or FIG. 3 , the ceiling antenna 10 further includes an antenna cover 5 , which is buckled onto the vertically polarized antenna 2 and fixedly connected to the antenna base 1 .

[0100] Among them, the antenna cover 5 is fixedly connected to the antenna base 1 to enclose a receiving space, so as to facilitate the installation of the vertically polarized antenna 2, the horizontally polarized antenna 3, and the passive mixing module 4 in the receiving space, thereby protecting the ceiling antenna 10 through the antenna cover 5 and extending the service life of the ceiling antenna 10.

[0101] In some embodiments, the dielectric substrate 41 included in the passive mixing module 4 can be a PCB board made of polytetrafluoroethylene, glass, fiber laminate, etc. The dielectric substrate 41 can be fixedly connected to the antenna base 1 or to the reflector 21, and can be fixedly connected using a plastic structural member or a nylon structural member.

[0102] The passive mixing circuit 42 included in the passive mixing module 4 is electrically connected to an external cable to receive a feed signal fed by the external cable and further process the feed signal into a vertically polarized signal that excites the antenna element 22 to radiate a vertically polarized beam, and a horizontally polarized signal that excites the horizontally polarized antenna 3 to radiate a horizontally polarized beam. The power splitter network 43 included in the passive mixing module 4 is a one-input, multiple-output power splitter circuit that receives the horizontally polarized signal output by the passive mixing circuit 42 and distributes the horizontally polarized signal to each antenna element included in the horizontally polarized antenna 3, thereby achieving radiation of the horizontally polarized beam through the multiple patch elements 31.

[0103] The vertically polarized signal includes a communication signal of multiple frequency bands, and the horizontally polarized signal is a 5G signal. For example, the vertically polarized signal includes a 2G signal, a 3G signal, a 4G signal, and a 5G signal.

[0104] In some embodiments, as shown in Figure 5, the passive mixing circuit 42 includes a frequency division circuit 421, a synthesis circuit 422 and a mixing circuit 423. The frequency division circuit 421 is electrically connected to the synthesis circuit 422 and the mixing circuit 423 respectively. The synthesis circuit 422 is electrically connected to the antenna element 22, and the mixing circuit 423 is electrically connected to the power division network 43. The frequency division circuit 421 is used to receive the feed signal and divide the feed signal into an intermediate frequency signal, a local oscillator signal and multiple communication signals. The synthesis circuit 422 is used to receive multiple communication signals and synthesize them into a vertically polarized signal, and output the vertically polarized signal to the antenna element 22. The mixing circuit 423 is used to receive the intermediate frequency signal and the local oscillator signal and synthesize them into a horizontally polarized signal, and output the horizontally polarized signal to the power division network 43. The horizontally polarized signal is a 5G signal.

[0105] The feed signal received by the frequency division circuit 421 includes signals in multiple frequency bands. The feed signal is divided according to the frequencies of the signals to obtain an intermediate frequency signal, a local oscillator signal, and multiple communication signals. The frequency of the intermediate frequency signal is different from that of the local oscillator signal, and each of the frequencies is different from the frequencies of the multiple communication signals, so that they can be distinguished by the frequency division circuit 421.

[0106] For example, the feed signal includes a low-frequency signal (including a 900MHz 2G signal), an intermediate frequency signal, a local oscillator signal, and a high-frequency signal (including an 1800MHz 2G signal, a 2GHz 3G signal, a 2.3GHz 4G signal, and a 2.6GHz 5G signal). The frequency of the intermediate frequency signal is different from the frequency of the local oscillator signal, and both are greater than 900MHz and less than 1800MHz. In this case, as shown in FIG5 , the frequency divider circuit 421 can be a quadplexer module having one input terminal and four output terminals. The four output terminals of the frequency divider circuit 421 output the low-frequency signal, the intermediate frequency signal, the local oscillator signal, and the high-frequency signal, respectively. The two output terminals of the frequency divider circuit 421 for outputting the low-frequency signal and the high-frequency signal are both electrically connected to the synthesis circuit 422, and the two output terminals of the frequency divider circuit 421 for outputting the intermediate frequency signal and the local oscillator signal are both electrically connected to the mixing circuit 423.

[0107] The synthesizing circuit 422 receives multiple communication signals transmitted by the frequency divider circuit 421 and synthesizes the multiple communication signals into one communication signal, namely, a vertically polarized signal, which is then transmitted to the antenna element 22 to stimulate the antenna element 22 to radiate a vertically polarized beam. Continuing with the above example, the synthesizing circuit 422 is a duplexer. In this case, as shown in FIG5 , the two input terminals of the synthesizing circuit 422 are electrically connected to the two output terminals of the frequency divider circuit 421 to respectively receive the low-frequency signal and the high-frequency signal output by the frequency divider circuit 421. The synthesized low-frequency signal and the high-frequency signal are then synthesized into one communication signal (a vertically polarized signal) comprising both the low-frequency signal and the high-frequency signal, and the synthesized communication signal is then transmitted to the antenna element 22.

[0108] The mixing circuit 423 receives the intermediate frequency signal and the local oscillator signal transmitted by the frequency dividing circuit 421, and mixes the intermediate frequency signal and the local oscillator signal to obtain a horizontally polarized 5G signal.

[0109] Optionally, as shown in Figure 6, the mixing circuit 423 includes two first baluns 4231, a second balun 4232, a mixer 4233 and a filter 4234; the input ends of the two first baluns 4231 are electrically connected to the frequency division circuit 421, and are used to receive the intermediate frequency signal and the local oscillator signal respectively, the output ends of the two first baluns 4231 and the input end of the second balun 4232 are electrically connected to the mixer 4233, the output end of the second balun 4232 is electrically connected to the filter 4234, and the filter 4234 is electrically connected to the power division network 43.

[0110] In this way, the two first baluns 4231 can be used to perform differential processing on the local oscillator signal and the intermediate frequency signal respectively to ensure that the impedance of the intermediate frequency signal and the local oscillator signal are the same after differential processing, thereby improving the mixing effect of the intermediate frequency signal and the local oscillator signal. After mixing through the mixer 4233, the two signals output by the mixer 4233 are single-ended converted through the second balun 4232 to improve the gain and anti-interference capability of the horizontally polarized signal.

[0111] In the embodiment of the present disclosure, the power division network 43 integrated on the dielectric substrate 41 can be a single-stage power division network or a multi-stage power division network, and the power division network 43 realizes equal-amplitude and in-phase excitation of multiple patch units 31 to achieve horizontal omnidirectional radiation of the horizontally polarized antenna 3.

[0112] Taking a first-level power splitter network as an example, the power splitter network 43 includes a first power splitter, wherein the multiple output terminals of the first power splitter correspond one-to-one with the multiple patch elements 31 of the horizontally polarized antenna 3, and each output terminal of the first power splitter is electrically connected to a corresponding patch element 31. For example, as shown in FIG7 , the horizontally polarized antenna 3 includes five patch elements 31, and the first power splitter (power splitter network 43) is a one-to-five power splitter, wherein the five output terminals of the first power splitter are electrically connected to the five corresponding patch elements 31, respectively.

[0113] Taking a two-stage power splitter network as an example, the power splitter network 43 includes a first power splitter and multiple second power splitters. The multiple output ends of the first power splitter correspond one-to-one with the multiple second power splitters, and each output end of the first power splitter is connected to the input end of a corresponding second power splitter. The output ends included in the multiple second power splitters correspond one-to-one with the multiple patch units 31 included in the horizontally polarized antenna 3, and each input end of the second power splitter is electrically connected to a corresponding patch unit 31. By way of example, the horizontally polarized antenna 3 includes six patch units 31, and the power splitter network 43 includes a first power splitter and three second power splitters. The first power splitter is a one-to-three power splitter, and the second power splitter is a one-to-two power splitter. The three output ends of the first power splitter are respectively electrically connected to the input ends of the three second power splitters, and the six output ends of the three second power splitters are respectively electrically connected to the six corresponding patch units 31.

[0114] In the embodiment of the present disclosure, the ceiling antenna 10 includes a feeding component, and the passive mixing circuit 42 and the antenna element 22, as well as the power division network 43 and each patch unit 31 are electrically connected through the feeding component to achieve the transmission of vertically polarized signals and horizontally polarized signals.

[0115] In some embodiments, the feeding component is a coaxial cable. In this case, as shown in Figure 1 or Figure 2, the ceiling antenna 10 includes a first coaxial cable 23 and multiple second coaxial cables 34. The multiple second coaxial cables 34 correspond one-to-one to the multiple patch units 31, so as to realize the transmission of vertically polarized signals through the first coaxial cable 23 and the transmission of horizontally polarized signals through the second coaxial cables 34.

[0116] Among them, the structures of the first coaxial cable 23 and the second coaxial cable 34, taking the first coaxial cable 23 as an example, as shown in Figure 8, the first coaxial cable 23 includes a core 231, a dielectric layer 232, a reference electrode layer 233 and a protective layer 234 nested in sequence.

[0117] The core 231 of the first coaxial cable 23 is electrically connected to the passive mixing circuit 42 and the antenna element 22, respectively. The core 231 of each second coaxial cable 34 is electrically connected to the power splitter network 43 and the corresponding patch unit 31, respectively. The reference electrode layer 233 of the first coaxial cable 23 and the reference electrode layer 233 of each second coaxial cable 34 are electrically connected to the reflector 21. In conjunction with the passive mixing circuit 42 described above, the core of the first coaxial cable is electrically connected to the synthesizing circuit 422 and the antenna element 22, respectively.

[0118] Specifically, the first coaxial cable 23 includes a first connection end and a second connection end, and a first transmission segment connected between the first connection end and the second connection end. The core of the first connection end is electrically connected to the antenna element 22, and the connection position is the feed point of the antenna element 22. The core of the second connection end is electrically connected to the passive mixing circuit 42 (synthesizing circuit 422) to achieve vertical polarization signal transmission through the core of the first transmission segment. The reference electrode layer of the first connection end is electrically connected to the reflector 21, and the reference electrode layer of the second connection end is used to load a ground signal to achieve ground signal transmission through the reference electrode layer of the first transmission segment, so that the reflector 21 serves as the reference ground for the antenna element 22.

[0119] The second coaxial cable 34 includes a third connection end and a fourth connection end, and a second transmission segment connected between the third and fourth connection ends. The core of the third connection end is electrically connected to the patch unit 31, and the connection position is the feed point of the patch unit 31. The core of the fourth connection end is electrically connected to the power splitter network 43 to achieve transmission of horizontally polarized signals through the core of the second transmission segment. The reference electrode layer of the third connection end is electrically connected to the reflector 21, and the reference electrode layer of the fourth connection end is used to load a ground signal to achieve transmission of the ground signal through the reference electrode layer of the second transmission segment, so that the reflector 21 serves as the reference ground for the patch unit 31.

[0120] Among them, for the connection ends of the first and second coaxial cables, the core, dielectric layer, reference electrode layer and protective layer are exposed in sequence from the connection end to the direction of the transmission section, so that the exposed dielectric layer on the first and third connection ends can pass through the through hole on the reflector 21 to achieve insulation between the core of the first and third connection ends and the reflector 21, and at the same time facilitate the electrical connection of the core of the first and third connection ends to the antenna element 22 and the patch unit 31 respectively, and facilitate the electrical connection of the reference electrode layer of the first and third connection ends to the reflector 21.

[0121] The reference electrode layers at the first and third connection ends can be electrically connected to the reflector 21 by welding, or by screwing, etc. Of course, the reference electrode layers at the first and third connection ends can also be electrically connected to the reflector 21 by other means without affecting the antenna performance of the ceiling antenna 10, and the embodiments of the present disclosure are not limited thereto.

[0122] In some embodiments, since the passive mixing module 4 is located in the installation space surrounded by the reflector and the antenna base 1, and the reflector 21 is a conductive structure, an interlayer insulation layer can be set between the passive mixing module 4 and the reflector 21 to achieve isolation between the passive mixing circuit 42, the power division network 43 and the reflector 21, thereby avoiding coupling between the passive mixing circuit 42, the power division network 43 and the reflector 21, which affects the antenna performance of the ceiling antenna 10.

[0123] Of course, in addition to providing an interlayer insulating layer between the passive mixing module 4 and the reflector 21, the dielectric substrate 41 of the passive mixing module 4 may also be directed toward the reflector 21 so as to reuse the dielectric substrate 41 as an interlayer insulating layer between the passive mixing circuit 42, the power division network 43, and the reflector 21, thereby achieving isolation between the passive mixing circuit 42, the power division network 43, and the reflector 21.

[0124] In some embodiments, the vertically polarized antenna 2 may be a biconical antenna, that is, the vertically polarized antenna 2 includes a lower cone and an upper cone, so as to achieve vertical wide-band coverage of the ceiling antenna 10 through the biconical antenna.

[0125] Among them, the lower cone is an inverted cone disk structure, and the upper cone is the main cone structure, that is, the upper cone includes an inverted cone structure close to the lower cone, and a cylindrical structure connected to the side of the cone structure away from the lower cone.

[0126] As shown in Figure 1 or Figure 2, the above-mentioned reflector 21 is the lower cone, and the above-mentioned antenna vibrator 22 is the upper cone. When the vertical polarization signal and the horizontal polarization signal are respectively fed into the antenna vibrator 22 and the patch unit 31 along the feeding component, a high-gain, wide-beam omnidirectional antenna can be realized under the reflection effect of the reflector 21.

[0127] For the vertically polarized antenna 2 including the reflector 21 and the antenna element 22, the reflector 21 can be directly fixedly connected to the antenna base 1, and the antenna element 22 can be fixedly connected to the reflector 21, or the reflector 21 can be fixedly connected to the antenna base 1, and the antenna element 22 can be fixedly connected to the antenna cover 5 described above.

[0128] Taking the fixation of the reflector 21 and the antenna base 1 as an example, the outer edge of the reflector 21 may have a radially outward-turned edge, and then be fixedly connected to the antenna base 1 at the position of the outward-turned edge by fixing bolts; of course, a fixing frame 77 may also be provided on the antenna base 1, and the reflector 21 may be directly supported on the fixing frame 77 and fixedly connected to the fixing frame 77.

[0129] Taking the fixing of the antenna element 22 to the reflector 21 as an example, an insulating member can be used for fixing to ensure insulation between the antenna element 22 and the reflector 21. For example, as shown in FIG9 , the ceiling antenna 10 further includes a second support member 8 , one end of which is fixedly connected to the reflector 21 , and a second end of the second support member 8 is fixedly connected to the antenna element 22 .

[0130] The second support member 8 can be an insulating structure such as a nylon structure or a plastic structure. The ends of the second support member 8 can be fixedly connected to the antenna element 22 and the reflector 21 by bolts or snap-fit ​​fasteners. The ceiling antenna 10 can include multiple second support members 8, which are spaced apart along the circumference of the antenna element 22. These multiple second support members 8 can support the antenna element 22 and ensure its stable fixation.

[0131] In some embodiments, as shown in Figure 4 or Figure 10, the reflective plate 21 includes a first reflective component 212 and a second reflective component 211. The first reflective component 212 and the second reflective component 211 are both annular, and the outer edge of the first reflective component 212 is connected to the inner edge of the second reflective component 211. The first reflective component 212 is arranged opposite to the antenna element 22.

[0132] The first reflective component 212 can be a planar ring structure to effectively reflect the vertically polarized beam radiated by the antenna element; the second reflective component 211 can be a conical ring structure to achieve omnidirectional coverage of the vertically polarized antenna 2 and the horizontally polarized antenna 3. An isolation plate can be provided at the joint between the first reflective component 212 and the second reflective component 211 to isolate the feed component connected to the antenna element 22 from the patch unit 31, preventing coupling between the feed component and the patch unit 31, thereby ensuring the antenna effects of both the vertically polarized antenna 2 and the horizontally polarized antenna 3.

[0133] Optionally, as shown in Figure 7 or Figure 10, the second reflective assembly 211 includes a plurality of splicing plates 2111 and a plurality of isolating members 2113. The plurality of splicing plates 2111 are spliced ​​in sequence along the circumference of the antenna element 22. Each splicing plate 2111 forms the same angle with the antenna base 1. An isolating member 2113 is fixed between two adjacent splicing plates 2111.

[0134] The horizontally polarized antenna 3 includes multiple patch units 31 that correspond one-to-one to multiple splicing plates 2111, and each patch unit 31 is fixed to a corresponding splicing plate 2111. This ensures that the angles formed between each splicing plate 2111 and the antenna base 1 are uniform, which helps ensure that the radiation directions of the multiple patch units 31 are consistent, thereby improving the antenna performance of the horizontally polarized antenna 3. Furthermore, an isolation member 2113 fixed between two adjacent splicing plates 2111 can be used to isolate two adjacent patch units 31, thereby preventing coupling between the two adjacent patch units 31 and affecting the antenna performance of the horizontally polarized antenna 3. The orthographic projection of each patch unit 31 along the thickness direction of the antenna base 1 is located within the orthographic projection of the corresponding splicing plate 2111 along the thickness direction of the antenna base 1, thereby ensuring that each splicing plate 2111 effectively reflects the horizontally polarized beam radiated by the corresponding patch unit 31.

[0135] The first reflective assembly 212 has a polygonal ring structure to ensure effective splicing between the first reflective assembly 212 and the second reflective assembly 211. For example, the second reflective assembly 211 includes five splicing plates 2111, and the corresponding first reflective assembly 212 has a pentagonal ring structure. Furthermore, the splicing plates 2111 included in the second reflective assembly 211 can be isosceles trapezoidal to ensure that the multiple splicing plates 2111 can be sequentially spliced ​​along the circumference of the antenna element 22 to form a conical ring structure.

[0136] Of course, the splicing plates 2111 included in the second reflective assembly 211 may also have other shapes. In this case, as shown in FIG7 or FIG9 , a gap facing away from the first reflective assembly 212 is provided between two adjacent splicing plates 2111. The second reflective assembly 211 also includes a plurality of filling plates 2112, with each gap having a filling plate 2112. In this way, the gaps are filled by the filling plates 2112, thereby simplifying the structure of the second reflective assembly 211 and facilitating its processing and manufacturing.

[0137] For example, the second reflective assembly 211 includes a splicing plate 2111 that is a wedge-shaped structure spliced ​​by rectangles and isosceles trapezoids, and a filling plate 2112 that is a triangular structure.

[0138] In combination with the above-mentioned isolating member 2113, the isolating member 2113 may include a first partition 2114, which is fixed at the joint of two adjacent splicing plates 2111; or as shown in FIG7 , the isolating member 2113 may include a first partition 2114 and a second partition 2115, and the second partition 2115 may include a first side plate 2116 and a second side plate 2117 in a V shape; the first partition 2114 is fixed at the joint of two adjacent splicing plates 2111. The edges of the first side panel 2116 and the second side panel 2117 on the same side both have flanges 2118 (i.e., the edges of the first side panel 2116 and the second side panel 2117 facing the second reflective assembly 211 both have flanges 2118). The flanges 2118 of the first side panel 2116 and the flanges 2118 of the second side panel 2117 are both fixedly connected to a filler plate 2112, and the V-shaped opening formed by the first side panel 2116 and the second side panel 2117 faces away from the first partition 2114. In this way, the arrangement of the first partition 2114 and the second partition 2115 ensures effective isolation between two adjacent patch units 31. Moreover, since the flanges 2118 of the first side panel 2116 and the second side panel 2117 both face away from the splicing plate 2111, the second partition 2115 is prevented from affecting the reflection of the horizontally polarized beam, thereby ensuring the antenna performance of the horizontally polarized antenna 3.

[0139] It should be noted that the spacer 2113 may be arranged in other ways besides the two above-mentioned ways, and the embodiments of the present disclosure do not limit this. In addition, in combination with the above-mentioned situation where the outer edge of the reflector 21 has a radially extending outer edge 2118, the edge of the splicing plate 2111 away from the first reflector assembly 212 may have a first radially extending outer edge, and the edge of the filling plate 2112 away from the first reflector assembly 212 may have a second radially extending outer edge, thereby achieving a fixed connection with the antenna base 1 through the first and second extending outer edges.

[0140] In the embodiment of the present disclosure, the horizontally polarized antenna 3 adopts a patch unit 31, so that the horizontally polarized antenna 3 has the characteristics of high gain and wide beam. The horizontally polarized antenna 3 may include multiple patch units 31, such as three, four, five, six, etc., and the multiple patch units 31 are arranged at circumferential intervals along the antenna vibrator 22, thereby realizing horizontal polarization in a circular array form based on the ring antenna principle, and realizing horizontal omnidirectional coverage at the same time.

[0141] For example, in combination with the above-mentioned case where the second reflective component 211 includes five splicing plates 2111 , the horizontally polarized antenna 3 includes five patch units 31 that are spaced and evenly distributed along the circumference of the antenna element 22 .

[0142] Among them, the patch unit 31 included in the horizontally polarized antenna 3 can be a patch unit 31 composed of a single-layer metal patch, or a patch unit 31 composed of a double-layer metal patch, etc. The following is a detailed explanation taking the patch unit 31 including a double-layer metal patch as an example.

[0143] In some embodiments, as shown in Figure 7 or Figure 10, the patch unit 31 includes a first metal patch 32 and a second metal patch 33 arranged in sequence along a direction away from the reflector 21, that is, the first metal patch 32 is located between the reflector 21 and the second metal patch 33, and the orthographic projections of the first metal patch 32 and the second metal patch 33 along the thickness direction of the antenna base 1 at least partially overlap.

[0144] Among them, the first metal patch 32 and the second metal patch 33 can both be made of metal or alloy materials, such as copper, aluminum alloy, etc. There is a certain distance between the first metal patch 32 and the reflector 21, and between the first metal patch 32 and the second metal patch 33 to ensure the insulation setting between the first metal patch 32 and the reflector 21, and between the first metal patch 32 and the second metal patch 33, thereby ensuring the reflection effect of the reflector 21 on the horizontally polarized beam, and at the same time realizing the coupling effect between the first metal patch 32 and the second metal patch 33, thereby improving the antenna performance of each patch unit 31.

[0145] The operating frequency of the horizontally polarized antenna 3 can be adjusted as needed by adjusting the spacing between the first metal patch 32 and the second metal patch 33 included in the patch unit 31, the shape and size of the first metal patch 32 and the second metal patch 33, and the position of the feeding point on the first metal patch 32 to achieve a high-gain, wide-beam horizontally polarized antenna 3.

[0146] The shapes of the first metal patch 32 and the second metal patch 33 can be the same or different. In the embodiment of the present disclosure, the shapes of the first metal patch 32 and the second metal patch 33 can be selected from circular, elliptical, polygonal or irregular shapes. When the shapes of the first metal patch 32 and the second metal patch 33 are polygonal, their shapes can be selected from rectangular, hexagonal, trapezoidal, etc. For example, as shown in Figure 7 or Figure 10, the first metal patch 32 and the second metal patch 33 included in the patch unit 31 have the same shape and are both rectangular.

[0147] The first metal patch 32 and the second metal patch 33 may have the same size, or may have different sizes. For example, if both the first metal patch 32 and the second metal patch 33 are rectangular, as shown in FIG10 , the long side of the first metal patch 32 is larger than the long side of the second metal patch 33 , and the wide side of the first metal patch 32 is smaller than the wide side of the second metal patch 33 .

[0148] It should be noted that, in combination with the above, the core of the third connection end of the second coaxial cable is electrically connected to the first metal patch 32, and the connection position is the feeding point of the first metal patch 32; in addition, in combination with the above-mentioned splicing plate 2111, the first metal patch 32 and the second metal patch 33 included in each patch unit 31 can be arranged in parallel with the corresponding splicing plate 2111, so as to improve the omnidirectionality of the horizontally polarized antenna 3 under the reflection of the horizontal polarization beam of the corresponding patch unit 31 by each splicing plate 2111.

[0149] In the embodiment of the present disclosure, for the first metal patch 32 and the second metal patch 33 included in each patch unit 31, the first metal patch 32 and the second metal patch 33 can be both fixed on the reflector 21, or the first metal patch 32 and the second metal patch 33 can be both fixed on the above-mentioned antenna cover 5, or the first metal patch 32 can be fixed on the reflector 21, and the second metal patch 33 can be fixed on the above-mentioned antenna cover 5.

[0150] The following explanation is given by taking an example in which both the first metal patch 32 and the second metal patch 33 are fixed on the reflector 21 .

[0151] In some embodiments, as shown in FIG11 , the ceiling antenna 10 further includes a first support member 7, which is fixed to the reflector 21, and the first metal patch 32 and the second metal patch 33 are both positioned on the first support member 7. This allows the plurality of patch units 31 to be installed and secured before the antenna cover 5 is installed, thereby preventing interference between the patch units 31 and the reflector 21 when the antenna cover 5 is secured to the antenna base 1 after the patch units 31 are secured to the antenna cover 5.

[0152] Among them, the first support member 7 can be an insulating structure such as a nylon structural member, a plastic structural member, etc. The ceiling antenna 10 can include multiple first support members 7, and the multiple first support members 7 are all fixed on the reflector 21, and the first metal patch 32 and the second metal patch 33 included in a patch unit 31 are all limited on multiple first support members 7 to ensure the stability of the fixation of the patch unit 31.

[0153] Optionally, as shown in Figure 11, the first support member 7 includes a fixing bolt 71, two fixing sleeves 72 and a locking nut 73; one end of the fixing bolt 71 is fixedly connected to the reflector 21, the two fixing sleeves 72 are both sleeved on the fixing bolt 71, and the locking nut 73 is tightened on the fixing bolt 71; the first metal patch 32 is limited between the two fixing sleeves 72, and the second metal patch 33 is limited between a fixing sleeve 72 away from the reflector 21 and the locking nut 73.

[0154] The fixing bolt 71 and the fixing sleeve 72 can be made of nylon or plastic to provide insulation between the reflector 21, the first metal patch 32, and the second metal patch 33. The locking nut 73 can be made of nylon, plastic, or metal, as long as it does not affect the insulation between the reflector 21, the first metal patch 32, and the second metal patch 33. The fixing sleeve 72 can also have an internal thread to tighten onto the fixing bolt 71, thereby preventing the fixing sleeve 72 from shaking.

[0155] Optionally, as shown in Figure 12, the first support member 7 includes a first threaded column 74, a second threaded column 75 and a locking screw 76; the first threaded column 74 and the second threaded column 75 both have an external threaded end and an internal threaded end, the external threaded end of the first threaded column 74 is fixedly connected to the reflective plate 21, the external threaded end of the second threaded column 75 passes through the first metal patch 32 and is tightened into the internal threaded end of the first threaded column 74, and the locking screw 76 passes through the second metal patch 33 and is tightened into the internal threaded end of the second threaded column 75.

[0156] Among them, the first threaded column 74 and the second threaded column 75 can be nylon structural parts or plastic structural parts to achieve insulation between the reflector 21, the first metal patch 32, and the second metal patch 33; the locking screw 76 can be a nylon structural part, a plastic structural part or a metal structural part, as long as it does not affect the insulation performance between the reflector 21, the first metal patch 32, and the second metal patch 33.

[0157] Optionally, as shown in Figure 13, the first support member 7 includes a fixing frame 77, which has a first slot 78 and a second slot 79 arranged at intervals; the fixing frame 77 is fixed on the reflective plate 21, and the first metal patch 32 and the second metal patch 33 are respectively limited in the first slot 78 and the second slot 79.

[0158] The fixing frame 77 can be secured to the reflector 21 by snap fastening or bolting. The fixing frame 77 can be a nylon or plastic structural member to provide insulation between the reflector 21, the first metal patch 32, and the second metal patch 33. Compared to the two aforementioned limiting methods, limiting the first and second metal patches 32, 33 by the fixing frame 77 can effectively improve the assembly efficiency of the patch unit 31, thereby improving the assembly efficiency of the ceiling antenna 10.

[0159] In the embodiment of the present disclosure, the ceiling antenna 10 is used to electrically connect to an external cable. This can be done by first performing a simple disassembly to expose the passive mixer circuit 42 when installing the ceiling antenna 10, thereby achieving electrical connection between the external cable and the passive mixer circuit 42. Alternatively, as shown in Figures 14 and 15, the antenna base 1 includes a base body 11, the base body 11 having a first through hole 111, and the ceiling antenna 10 also includes an external feeder 6, one end of the external feeder 6 passes through the first through hole 111 and is electrically connected to the passive mixer circuit 42, and the other end of the external feeder 6 is used to electrically connect to the external cable. In this way, the electrical connection between the passive mixer circuit 42 and the external cable can be achieved through the provision of the external feeder 6, thereby avoiding the need to disassemble the ceiling antenna 10 when installing the ceiling antenna 10, thereby improving the installation efficiency of the ceiling antenna 10.

[0160] 14 , the first through hole 111 of the base body 11 may be formed by a hollow boss 117 at the bottom of the base body 11, with the end surface of the boss 117 extending through the first through hole 111. Optionally, the outer wall of the boss 117 may have external threads to facilitate installation of the ceiling antenna 10.

[0161] Optionally, one end of the external feeder 6 has a first connector, and one end of the external cable has a second connector. The first connector matches the second connector, so that the first connector and the second connector can be plugged together to achieve an electrical connection between the external feeder 6 and the external cable, thereby reducing the difficulty of electrical connection and improving electrical connection efficiency. For example, the first connector and the second connector are respectively an N-type male connector and an N-type female connector, or respectively an SMA male connector and an SMA female connector.

[0162] In some embodiments, as shown in Figures 15 and 16, the antenna base 1 also includes an elastic sleeve 12, which includes a sleeve body 121 and limiting bosses 122 located at both ends of the sleeve body 121; the sleeve body 121 is located in the first through hole 111, and the limiting bosses 122 at both ends of the sleeve body 121 are respectively limited on both sides of the base body 11 (i.e., both sides of the end face of the boss 117), the external feed line 6 passes through the sleeve body 121, and is interference fit with the sleeve body 121 (i.e., the outer diameter of the external feed line 6 is slightly larger than the outer diameter of the sleeve body 121).

[0163] Among them, the sleeve body 121 and the limiting boss 122 both include rubber material to ensure that the sleeve body 121 and the limiting boss 122 have a certain elasticity, so that based on the elastic deformation of the limiting boss 122, the limiting bosses 122 at both ends of the sleeve body 121 are respectively limited on both sides of the antenna base 1, thereby realizing the fixation of the elastic sleeve 12 on the antenna base 1; since the external feed line 6 passes through the sleeve body 121 and has an interference fit with the sleeve body 121, the external feed line 6 is fixed in the sleeve body 121, thereby avoiding the shaking of the external feed line 6 and ensuring the stability of the electrical connection between the external feed line 6 and the passive mixing circuit 42.

[0164] Among them, after the limiting bosses 122 at both ends of the sleeve body 121 are respectively limited on both sides of the antenna base 1, the sleeve body 121 can also be interference fit with the hole wall of the first through hole 111, that is, the outer diameter of the sleeve body 121 is slightly larger than the aperture of the first through hole 111, so as to achieve the stability of the elastic sleeve 12 being limited in the first through hole 111, and avoid the situation where the elastic sleeve 12 drives the external feed line 6 to rotate due to rotation, etc., causing the external feed line 6 and the passive mixing circuit 42 to become loose.

[0165] It should be noted that the base body 11 can have multiple first through holes 111. Accordingly, the antenna base 1 includes multiple elastic sleeves 12 corresponding one-to-one to the multiple first through holes 111, so that multiple external cables can be inserted into the ceiling antenna 10, thereby improving the scalability of the function of the ceiling antenna 10.

[0166] In other embodiments, as shown in Figures 17 and 18, the antenna base 1 also includes a fixing plate 13; the fixing plate 13 is fixedly connected to the base body 11 (that is, fixedly connected to the boss 117), and has a second through hole 131, and the external feed line 6 passes through the second through hole 131 and is confined in the second through hole 131.

[0167] The fixing plate 13 is detachably connected to the antenna base 1. The opening size of the second through hole 131 is smaller than the opening size of the first through hole 111. The opening sizes of the second through holes 131 vary between different fixing plates 13. This allows different fixing plates 13 to be selected to achieve electrical connection between external feeder lines 6 of different sizes and the passive mixing circuit 42. For example, as shown in Figures 17 and 18, the first through hole 111 is an oblong hole, and the second through hole 131 is a circular hole.

[0168] Among them, the second through hole 131 on the fixing plate 13 can be one or more, and the number of second through holes 131 on different fixing plates 13 can be different, so that different fixing plates 13 can be selected to achieve different numbers of external cables extending into the ceiling antenna 10, thereby improving the scalability of the function of the ceiling antenna 10.

[0169] The fixing plate 13 included in the antenna base 1 can be fixedly connected to the base body 11 by screwing or snapping.

[0170] Taking the threaded connection between the fixing plate 13 and the base body 11 as an example, as shown in Figure 17, the antenna base 1 also includes multiple locking bolts 14. The fixing plate 13 has multiple fixing holes 132 corresponding to the multiple locking bolts 14. Each locking bolt 14 passes through a corresponding fixing hole 132 and is fixedly connected to the base body 11 (i.e., fixedly connected to the boss 117). For example, the fixing plate 13 has two fixing holes 132, and the two fixing holes 132 are located on either side of the second through hole 131 in the diametrical direction.

[0171] Taking the connection between the fixing plate 13 and the base body 11 as an example, as shown in Figures 19, 20, and 21, the surface of the fixing plate 13 facing the base body 11 has multiple fixing clips 133, and the hole wall of the first through hole 111 has multiple slots 112. The multiple fixing clips 133 correspond one-to-one with the multiple slots 112, and each fixing clip 133 is detachably retained within the corresponding slot 112. For example, the fixing plate 13 has two fixing clips 133, and the two fixing clips 133 are located on both sides of the second through hole 131 in the diameter direction.

[0172] The slot 112 on the wall of the first through hole 111 may be a through slot, that is, the slot 112 passes through the wall of the first through hole 111 (that is, through the side wall of the boss 117 ), so as to facilitate the removal of the fixing plate 13 .

[0173] Alternatively, as shown in FIG22 , the surface of the fixing plate 13 facing the base body 11 has a plurality of elastic clips 134 , each elastic clip 134 comprising a connecting rod and an elastic clip, the connecting rod being connected to the fixing plate 13 and the elastic clip, respectively; the hole wall of the first through hole 111 has a stepped surface 113 facing away from the fixing plate 13 , the base body 11 has a plurality of limiting holes 114 penetrating the stepped surface 113 , the plurality of elastic clips 134 corresponding one-to-one with the plurality of limiting holes 114 , and each elastic clip passes through a corresponding limiting hole 114 and is retained on the stepped surface 113 . For example, the fixing plate 13 has two elastic clips 134 , and the two elastic clips 134 are located on either side of the second through hole 131 in the diametrical direction.

[0174] In some embodiments, after the external feed line 6 passes through the second through hole 131 on the fixing plate 13 , it can be confined in the second through hole 131 to prevent the external feed line 6 from shaking and causing the connection between the external feed line 6 and the passive mixing circuit 42 to become loose.

[0175] The fixing plate 13 may be an integrated structure or a split structure, that is, as shown in FIG23 , the fixing plate 13 includes a first half plate 135 and a second half plate 136 .

[0176] For the fixed plate 13 with an integrated structure, it can be as shown in Figure 17. An elastic sleeve 12 is provided in the second through hole 131 on the fixed plate 13. The structure of the elastic sleeve 12 can refer to the above description to achieve the limiting fixation of the elastic sleeve 12 in the second through hole 131, and the limiting fixation of the elastic sleeve 12 on the external feeder 6.

[0177] With respect to the fixed plate 13 comprising the first half plate 135 and the second half plate 136, the first half plate 135 and the second half plate 136 can be fastened and fixedly connected, and the fastening can enclose the second through-hole 131. In this manner, when the first half plate 135 and the second half plate 136 are fastened and fixedly connected, the external feeder line 6 can be squeezed to retain the external feeder line 6 within the second through-hole 131. Furthermore, the fastening of the first half plate 135 and the second half plate 136 retains the external feeder line 6 within the second through-hole 131, thereby improving the assembly efficiency of the external feeder line 6 and the fixed plate 13 while preventing interference with the connector provided at the end of the external feeder line 6.

[0178] Among them, the first half plate 135 and the second half plate 136 can be directly fixedly connected, or they can be fastened together by snaps and then fixedly connected based on the fixed plate 13 and the base body 11 to achieve the fixed connection between the first half plate 135 and the second half plate 136.

[0179] Taking the fixed connection between the first half plate 135 and the second half plate 136 as an example, as shown in Figures 23 and 24, the fixing plate 13 also includes a fixing screw 137. The first half plate 135 has a third through hole 1351 facing the second half plate 136, and the second half plate 136 has a threaded hole 1361 facing the first half plate 135. The fixing screw 137 passes through the third through hole 1351 and is tightened within the threaded hole 1361. Thus, when the first half plate 135 and the second half plate 136 are fastened together, the tightening of the fixing screw 137 within the threaded hole 1361 can squeeze the first half plate 135 and the second half plate 136 against the external feeder 6, thereby limiting the position of the external feeder 6 within the second through hole 131.

[0180] The fixing plate 13 may include multiple fixing screws 137, the first half plate 135 has multiple third through holes 1351, and the second half plate 136 has multiple threaded holes 1361. The multiple fixing screws 137, the multiple third through holes 1351, and the multiple threaded holes 1361 correspond to each other, so that the multiple fixing screws 137 ensure a stable connection between the first half plate 135 and the second half plate 136. For example, as shown in Figures 23 and 24, the fixing plate 13 may include two fixing screws 137, the first half plate 135 has two third through holes 1351, and the second half plate 136 has two threaded holes 1361.

[0181] Taking the fastening of the first half plate 135 and the second half plate 136 as an example, as shown in Figures 25 and 26 , the side surface of the first half plate 135 facing the second half plate 136 has a plurality of locking buckles 1352, and the side surface of the second half plate 136 facing the first half plate 135 has a plurality of locking grooves 1362. The plurality of locking buckles 1352 corresponds one-to-one with the plurality of locking grooves 1362, and each locking buckle 1352 is retained within a corresponding locking groove 1362. Thus, when the first half plate 135 and the second half plate 136 are fastened together, the locking buckles 1352 cooperate with the locking grooves 1362 to squeeze the external feeder line 6 against the first half plate 135 and the second half plate 136, thereby retaining the external feeder line 6 within the second through hole 131.

[0182] Furthermore, the first half plate 135 and the second half plate 136 can be fixedly connected to the base body 11 to further achieve a fixed connection between the first half plate 135 and the second half plate 136, thereby effectively ensuring the stability of the external feeder 6 limited between the first half plate 135 and the second half plate 136.

[0183] It should be noted that, for the first half plate 135 and the second half plate 136 included in the fixing plate 13, combined with the fixed connection between the fixing plate 13 and the base body 11 described above, taking the fixing plate 13 having multiple fixing holes 132 as an example, the first half plate 135 and the second half plate 136 both have fixing holes 132, thereby realizing the fixed connection between the first half plate 135 and the second half plate 136 and the base body 11; taking the fixing plate 13 having multiple fixing holes 132 as an example, the first half plate 135 and the second half plate 136 both have fixing buckles 133, thereby realizing the fixed connection between the first half plate 135 and the second half plate 136 and the base body 11.

[0184] Continuing with the example that both the first half plate 135 and the second half plate 136 have fixing holes 132, as shown in Figure 26, the first half plate 135 has a first fixing hole 1353, the second half plate 136 has a second fixing hole 1363, and the base body 11 has a first locking hole 115 and a second locking hole 116 corresponding to the first fixing hole 1353 and the second fixing hole 1363 respectively; as shown in Figures 27 and 28, the distance d1 between the first fixing hole 1353 and the second fixing hole 1363 is greater than the distance d2 between the first locking hole 115 and the second locking hole 116. In this way, when the first half plate 135 and the second half plate 136 are respectively locked through the first fixing hole 1353 and the second fixing hole 1363, a force toward the external feeder 6 can be applied to the first half plate 135 and the second half plate 136, thereby further ensuring the stability of the external feeder 6 being limited between the first half plate 135 and the second half plate 136, that is, ensuring the stability of the external feeder 6 being limited within the second through hole 131.

[0185] In the embodiment of the present disclosure, in combination with the ceiling antenna 10 described above, taking the first ceiling antenna 10 as an example, the second reflection component 211 of the reflection plate 21 is provided to include five splicing plates 2111 and five filling plates 2112, and the horizontally polarized antenna 3 is provided to include five patch units 31, and each patch unit 31 includes a first metal patch 32 and a second metal patch 33. The first metal patch 32 and the second metal patch 33 are both rectangular, and the angle between the first metal patch 32, the second metal patch 33, the splicing plate 2111 and the antenna base 1 is 60 degrees. At this time, the ceiling antenna 10 is simulated to obtain the voltage standing wave ratio curve of the vertically polarized antenna 2 as shown in Figure 29, the radiation pattern of the vertically polarized antenna 2 as shown in Figure 30, the voltage standing wave ratio curve of the horizontally polarized antenna 3 as shown in Figure 31, the radiation pattern of the horizontally polarized antenna 3 as shown in Figure 32, and the H-plane pattern of the horizontally polarized antenna 3 at an elevation angle of 60 degrees as shown in Figure 33.

[0186] In combination with Figures 29 and 30, it can be seen that the voltage standing wave ratio of the vertically polarized antenna 2 of the first ceiling antenna 10 is less than 1.5, and the gain in the range of 2515 to 2675 MHz is 4.2 dB; in combination with Figures 31 and 32, it can be seen that the voltage standing wave ratio of the horizontally polarized antenna 3 of the first ceiling antenna 10 is less than 1.3, and the gain in the range of 2515 to 2675 MHz is 5.8 dB. At the high pitch angle (60 degrees) of the patch unit 31, the gain of the horizontally polarized antenna 3 of the first ceiling antenna 10 is 0.4 dB; in combination with Figure 33, it can be seen that the roundness of the radiation pattern of the horizontally polarized antenna 3 of the first ceiling antenna 10 on the H plane is ±1.5 dB.

[0187] Taking the second ceiling antenna 10 as an example, combined with the above-mentioned ceiling antenna 10, the second reflection component 211 of the reflection plate 21 is provided to include five splicing plates 2111, and the horizontal polarization antenna 3 is provided to include five patch units 31, and each patch unit 31 includes a first metal patch 32 and a second metal patch 33. The first metal patch 32 and the second metal patch 33 are both rectangular, and the angle between the first metal patch 32, the second metal patch 33, the splicing plate 2111 and the antenna base 1 is 60 degrees. At this time, the ceiling antenna 10 is simulated to obtain the voltage standing wave ratio curve of the vertically polarized antenna 2 as shown in Figure 34, the radiation pattern of the vertically polarized antenna 2 as shown in Figure 35, the voltage standing wave ratio curve of the horizontally polarized antenna 3 as shown in Figure 36, the radiation pattern of the horizontally polarized antenna 3 as shown in Figure 37, and the H-plane pattern of the horizontally polarized antenna 3 at an elevation angle of 60 degrees as shown in Figure 38.

[0188] In combination with Figures 34 and 35, it can be seen that the voltage standing wave ratio of the vertically polarized antenna 2 of the second ceiling antenna 10 is less than 1.6, and the gain in the range of 2515 to 2675 MHz is 3.1 dB; in combination with Figures 36 and 37, it can be seen that the voltage standing wave ratio of the horizontally polarized antenna 3 of the first ceiling antenna 10 is less than 1.3, and the gain in the range of 2515 to 2675 MHz is 6.7 dB. At the high pitch angle (60 degrees) of the patch unit 31, the gain of the horizontally polarized antenna 3 of the second ceiling antenna 10 is -1.0 dB; in combination with Figure 38, it can be seen that the roundness of the radiation pattern of the horizontally polarized antenna 3 of the first ceiling antenna 10 on the H plane is ±1.5 dB.

[0189] Compared with the above-mentioned first ceiling antenna 10 and second ceiling antenna 10, the second reflecting component 211 of the first ceiling antenna 10 is composed of five splicing panels 2111 of a certain size and five filling panels 2112 located between adjacent splicing panels 2111. The second reflecting component 211 of the second ceiling antenna 10 is composed of five splicing panels 2111. The first reflecting component 212 of the second ceiling antenna 10 not only reduces the impact of the outer edge of the reflecting plate 21 on the patch unit 31, but also increases the relative size of the patch unit 31, thereby improving the gain of the horizontally polarized antenna 3 at high pitch angles. In addition, the beamwidth of the vertically polarized antenna 2 of the first ceiling antenna 10 and the second ceiling antenna 10 is basically the same, but the gain is reduced by nearly 1dB; the beamwidth of the horizontally polarized antenna 3 of the first ceiling antenna 10 and the second ceiling antenna 10 is basically the same, but the gain is increased by nearly 1dB; in addition, at a high pitch angle (60 degrees) of the patch unit 31, compared with the gain of the horizontally polarized antenna 3 of the first ceiling antenna 10, the gain of the horizontally polarized antenna 3 of the second ceiling antenna 10 is increased by nearly 1.5dB.

[0190] The present disclosure also provides an electronic device including the ceiling antenna 10. In the present disclosure, combined with the above, the 5G signal coverage of the electronic device can be effectively guaranteed, and the indoor 5G communication quality can be effectively guaranteed.

[0191] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A ceiling antenna, wherein: include: Antenna base; a vertically polarized antenna fixed on the antenna base and comprising a reflector and an antenna element, wherein the reflector is located between the antenna base and the antenna element, and an installation space is enclosed by the reflector and the antenna base; A horizontally polarized antenna, comprising a plurality of patch units, wherein the plurality of patch units are spaced apart around the antenna element and are located on a side of the reflector away from the antenna base; A passive mixing module is located in the installation space and includes a dielectric substrate and a passive mixing circuit and a power division network integrated on the dielectric substrate. The passive mixing circuit is electrically connected to the antenna element and the power division network, respectively, and is used to output a 5G signal to the power division network. The power division network is electrically connected to multiple patch units, respectively, and the passive mixing circuit is used to receive a feed signal.

2. The ceiling antenna according to claim 1, wherein: The reflective plate includes a first reflective component and a second reflective component, the first reflective component and the second reflective component are both ring-shaped, and the outer edge of the first reflective component is connected to the inner edge of the second reflective component; The first reflective component is arranged opposite to the antenna vibrator, and the second reflective component includes multiple splicing plates and multiple isolation parts. The multiple splicing plates are spliced ​​in sequence along the circumference of the antenna vibrator, and each of the splicing plates forms the same angle with the antenna base. An isolation part is fixed between two adjacent splicing plates. The multiple splicing plates correspond one-to-one to the multiple patch units, and each patch unit is fixed on the corresponding splicing plate.

3. The ceiling antenna according to claim 2, wherein: The second reflective assembly further includes a plurality of filling plates. A gap facing away from the first reflective assembly is provided between two adjacent splicing plates, and each gap has a filling plate.

4. The ceiling antenna according to claim 3, wherein: The partition comprises a first partition plate and a second partition plate, wherein the second partition plate comprises a first side plate and a second side plate in a V shape; The first partition is fixed at the joint of the two adjacent splicing panels, and the edges on the same side of the first side panel and the second side panel have flanges. The flanges of the first side panel and the second side panel are fixedly connected to one of the filling panels, and the V-shaped opening formed by the first side panel and the second side panel faces away from the first partition.

5. The ceiling antenna according to claim 1, wherein: The patch unit includes a first metal patch and a second metal patch sequentially arranged in a direction away from the reflector; The orthographic projections of the first metal patch and the second metal patch along the thickness direction of the antenna base at least partially overlap.

6. The ceiling antenna according to claim 5, wherein: The ceiling antenna further includes a first support member, which is fixed to the reflector, and the first metal patch and the second metal patch are both limited on the first support member.

7. The ceiling antenna according to claim 6, wherein: The first support member includes a fixing bolt, two fixing sleeves and a locking nut; One end of the fixing bolt is fixedly connected to the reflector, the two fixing sleeves are both sleeved on the fixing bolt, and the locking nut is tightened on the fixing bolt; The first metal patch is limited between the two fixing sleeves, and the second metal patch is limited between the fixing sleeve away from the reflector and the locking nut.

8. The ceiling antenna according to claim 6, wherein: The first support member includes a first threaded column, a second threaded column and a locking screw; The first threaded column and the second threaded column both have an external threaded end and an internal threaded end. The external threaded end of the first threaded column is fixedly connected to the reflective plate, the external threaded end of the second threaded column passes through the first metal patch and is tightened in the internal threaded end of the first threaded column, and the locking screw passes through the second metal patch and is tightened in the internal threaded end of the second threaded column.

9. The ceiling antenna according to claim 6, wherein: The first support member includes a fixing frame having a first slot and a second slot spaced apart from each other; The fixing frame is fixed to the reflecting plate, and the first metal patch and the second metal patch are respectively limited in the first slot and the second slot.

10. The ceiling antenna according to claim 1, wherein: The passive frequency mixing circuit includes a frequency dividing circuit, a synthesis circuit and a frequency mixing circuit; The frequency division circuit is electrically connected to the synthesis circuit and the frequency mixing circuit respectively, the synthesis circuit is electrically connected to the antenna element, and the frequency mixing circuit is electrically connected to the power division network; The frequency dividing circuit is used to receive the feed signal and divide the feed signal into an intermediate frequency signal, a local oscillator signal and multiple communication signals. The synthesis circuit is used to receive multiple communication signals and synthesize them into a vertically polarized signal, and output the vertically polarized signal to the antenna element. The mixing circuit is used to receive the intermediate frequency signal and the local oscillator signal and synthesize them into a horizontally polarized signal, and output the horizontally polarized signal to the antenna element. The signal is output to the power division network, and the horizontally polarized signal is a 5G signal.

11. The ceiling antenna according to claim 10, wherein: The mixing circuit includes two first baluns, a second balun, a mixer and a filter; The input ends of the two first baluns are electrically connected to the frequency division circuit and are used to receive the intermediate frequency signal and the local oscillator signal respectively. The output ends of the two first baluns and the input end of the second balun are electrically connected to the mixer. The output end of the second balun is electrically connected to the filter, and the filter is electrically connected to the power division network.

12. The ceiling antenna according to claim 10, wherein: The ceiling antenna includes a first coaxial cable and a plurality of second coaxial cables, wherein the plurality of second coaxial cables correspond one-to-one to the plurality of patch units; The first coaxial cable and the second coaxial cable both include a core, a dielectric layer, a reference electrode layer and a protective layer that are nested in sequence. The core of the first coaxial cable is electrically connected to the synthesis circuit and the antenna element, respectively. The core of each second coaxial cable is electrically connected to the power division network and the corresponding patch unit, respectively. The reference electrode layer of the first coaxial cable and the reference electrode layer of each second coaxial cable are electrically connected to the reflector.

13. The ceiling antenna according to any one of claims 1 to 12, wherein: The ceiling antenna further includes a second support member, one end of the second support member is fixedly connected to the reflector, and a second end of the second support member is fixedly connected to the antenna element.

14. The ceiling antenna according to any one of claims 1 to 12, wherein: The ceiling antenna further includes an antenna cover, which is buckled on the vertically polarized antenna and fixedly connected to the antenna base.

15. The ceiling antenna according to any one of claims 1 to 12, wherein: The ceiling antenna further includes an external feeder, and the antenna base includes a base body; The base body has a first through hole. One end of the external feeder passes through the first through hole and is electrically connected to the passive mixing circuit. The other end of the external feeder is used to be electrically connected to an external cable.

16. The ceiling antenna according to claim 15, wherein: The antenna base further comprises an elastic sleeve, wherein the elastic sleeve comprises a sleeve body and limiting bosses located at both ends of the sleeve body; The sleeve body is located in the first through hole, and the limiting bosses at both ends of the sleeve body are respectively limited on both sides of the base body. The external feeder passes through the sleeve body and is interference fit with the sleeve body.

17. The ceiling antenna according to claim 15, wherein: The antenna base also includes a fixing plate; The fixing plate is fixedly connected to the base body and has a second through hole through which the external feeder passes. Passes through the second through hole and is limited in the second through hole.

18. The ceiling antenna according to claim 17, wherein: The antenna base further includes a plurality of locking bolts. The fixing plate has a plurality of fixing holes corresponding to the plurality of locking bolts. Each of the locking bolts passes through the corresponding fixing hole and is fixedly connected to the base body.

19. The ceiling antenna according to claim 17, wherein: The surface of the fixing plate facing the base body has a plurality of fixing clips, and the hole wall of the first through hole has a plurality of slots. The plurality of fixing clips correspond to the plurality of slots one by one, and each fixing clip is detachably limited in the corresponding slot.

20. The ceiling antenna according to claim 17, wherein: The surface of the fixing plate facing the base body has a plurality of elastic buckles, each of the elastic buckles includes a connecting rod and an elastic buckle, and the connecting rod is connected to the fixing plate and the elastic buckle respectively; The hole wall of the first through hole has a step surface facing away from the fixing plate, and the base body has a plurality of limiting holes passing through the step surface. The plurality of elastic clips correspond one-to-one to the plurality of limiting holes, and each elastic clip passes through the corresponding limiting hole and is limited on the step surface.

21. The ceiling antenna according to any one of claims 17 to 20, wherein: The fixing plate includes a first half plate and a second half plate. The first half plate and the second half plate are buckled and fixedly connected to each other, and the first half plate and the second half plate are buckled to form the second through hole.

22. The ceiling antenna according to claim 21, wherein: The fixing plate further includes a fixing screw. The first half plate has a third through hole facing the second half plate. The second half plate has a threaded hole facing the first half plate. The fixing screw passes through the third through hole and is tightened in the threaded hole.

23. The ceiling antenna according to claim 21, wherein: The side surface of the first half plate facing the second half plate has a plurality of locking buckles, and the side surface of the second half plate facing the first half plate has a plurality of locking grooves. The plurality of locking buckles correspond one-to-one to the plurality of locking grooves, and each locking buckle is limited in the corresponding locking groove.

24. The ceiling antenna according to claim 23, wherein: The first half plate has a first fixing hole, the second half plate has a second fixing hole, and the base body has a first locking hole and a second locking hole corresponding to the first fixing hole and the second fixing hole respectively; The distance between the first fixing hole and the second fixing hole is greater than the distance between the first locking hole and the second locking hole.

25. An electronic device, wherein: The invention comprises the ceiling antenna described in any one of claims 1-24.

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