CN222233855U

CN222233855U - Omnidirectional antenna and communication equipment

Info

Publication number: CN222233855U
Application number: CN202323567552.4U
Authority: CN
Inventors: 宋建平; 李致祥
Original assignee: Shenzhen Autel Intelligent Aviation Technology Co Ltd
Current assignee: Shenzhen Autel Intelligent Aviation Technology Co Ltd
Priority date: 2023-12-26
Filing date: 2023-12-26
Publication date: 2024-12-24
Anticipated expiration: 2033-12-26

Abstract

The utility model relates to the field of communication equipment, and discloses an omnidirectional antenna and communication equipment, including a shell assembly, a first frequency band antenna, a second frequency band antenna, a multiplexer and a main feeder, wherein the shell assembly includes a guide structure and a shell, and the guide structure is installed in the shell; the first frequency band antenna is installed in the shell, and the first frequency band antenna includes a first radiation unit; the second frequency band antenna is installed in the shell, and the second frequency band antenna includes a second radiation unit; the multiplexer is installed in the shell, and the multiplexer is located between the first frequency band antenna and the second frequency band antenna, and the multiplexer includes a common port and at least two antenna connection ports, and the first frequency band antenna and the second frequency band antenna are connected to the multiplexer through the antenna connection port; the main feeder is connected to the common port, and the main feeder is arranged in the guide structure. The technical problem that the ground-end control equipment of an unmanned aerial vehicle can only effectively radiate radio signals of one frequency band in the same time period is solved.

Description

Omnidirectional antenna and communication equipment

Technical Field

The present utility model relates to the field of communications devices, and in particular, to an omni-directional antenna and a communications device.

Background

At present, signals are required to be transmitted between communication devices through radio, such as unmanned aerial vehicles and ground stations, and the omni-directional antenna can effectively radiate radio signals, so that the omni-directional antenna is widely applied to unmanned aerial vehicles.

In the related art, an omni-directional antenna on an unmanned aerial vehicle generally adopts a rod-shaped structure, the omni-directional antenna comprises a radiation unit and a main feeder line, the radiation unit comprises an upper radiation arm and a lower radiation arm, the main feeder line comprises two conductors which are mutually separated, one conductor is connected with the upper radiation arm, the other conductor is connected with the lower radiation arm, and then the radiation unit can effectively radiate a radio signal sent out by the main feeder line.

Unmanned vehicles generally have two or more communication frequency bands, and accordingly, ground stations also need two or more communication frequency bands, so currently, unmanned vehicles and ground stations mostly adopt rod antennas, and most rod antennas are single-frequency antennas, i.e. the rod antennas only comprise one radiation unit, so that the unmanned vehicles can only effectively radiate radio signals of one frequency band in one time period.

Disclosure of utility model

The embodiment of the utility model aims to provide an omnidirectional antenna so as to solve the technical problem that an unmanned aerial vehicle in the prior art can only generate effective radiation to radio signals of a frequency band in a time period.

The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows:

There is provided an omni-directional antenna comprising:

a housing assembly including a guide structure and a housing, the guide structure being mounted within the housing;

The first frequency band antenna is arranged in the shell and comprises a first radiation unit, and the first frequency band antenna is used for receiving or transmitting signals;

The second frequency band antenna is arranged in the shell and comprises a second radiation unit, the second frequency band antenna is used for receiving or transmitting signals, and the second frequency band antenna and the first frequency band antenna are coaxially arranged;

The multiplexer is arranged in the shell, the multiplexer is positioned between the first frequency band antenna and the second frequency band antenna, the multiplexer comprises a public port and at least two antenna connection ports, and the first frequency band antenna and the second frequency band antenna are connected with the multiplexer through the antenna connection ports;

and one end of the main feeder is connected to the common port, and the main feeder penetrates through the guide structure.

In some embodiments, the first frequency band antenna includes a first radiating element, a third radiating element, a first power divider, a first radio frequency line, and a third radio frequency line;

The first radiating element comprises a first upper radiating arm and a first lower radiating arm, and the third radiating element comprises a third upper radiating arm and a third lower radiating arm;

The first power divider is located between the first radiation unit and the third radiation unit, and comprises a first input end and two first output ends, and the first input end is connected with one antenna connection port; one of the first output ends is connected to the first upper radiating arm and the first lower radiating arm through the first radio frequency wire, and the other first output end is connected to the third upper radiating arm and the third lower radiating arm through the third radio frequency wire;

The second frequency band antenna comprises a second radiation unit, a fourth radiation unit, a second power divider, a second radio frequency line and a fourth radio frequency line;

The second radiating element comprises a second upper radiating arm and a second lower radiating arm, and the fourth radiating element comprises a fourth upper radiating arm and a fourth lower radiating arm;

The second power divider is located between the second radiating unit and the fourth radiating unit, and comprises a second input end and two second output ends, wherein the second input end is connected to the other antenna connecting port, one second output end is connected to the second upper radiating arm and the second lower radiating arm through the second radio frequency line, and the other second output end is connected to the fourth upper radiating arm and the fourth lower radiating arm through the fourth radio frequency line.

In some embodiments, the first upper radiating arm includes an upper cylindrical structure and an upper annular cover, the first lower radiating arm includes a lower cylindrical structure and a lower annular cover, the upper cylindrical structure and the lower cylindrical structure are coaxially arranged and have the same structure, the upper annular cover is connected to one end of the upper cylindrical structure, which is away from the lower cylindrical structure, and the lower annular cover is connected to one end of the lower cylindrical structure, which is away from the upper cylindrical structure;

The first radio frequency wire comprises a first inner layer conductor, a first insulating medium, a first outer layer conductor and a first insulating sheath which are sleeved in sequence from inside to outside, the first inner layer conductor and the first outer layer conductor are separated by the first insulating medium, the first inner layer conductor is connected to one end of the lower cylindrical structure, which faces the upper cylindrical structure, and the first outer layer conductor is connected to one end of the upper cylindrical structure, which faces the lower cylindrical structure;

In some embodiments, the housing assembly further comprises an end cap and a base member, the guide structure is disposed coaxially with the housing, one end of the guide structure and one end of the housing are both connected to the end cap, and the other end of the guide structure and the other end of the housing are both connected to the base member;

The first radio frequency wire, the second radio frequency wire, the third radio frequency wire and the fourth radio frequency wire are all arranged in the guide structure in a penetrating mode, the first power divider, the second power divider and the multiplexer are all arranged on the outer surface of the guide structure, the inner side of the upper annular sealing cover is connected to the outer surface of the guide structure, the outer side of the upper annular sealing cover is connected to one end, deviating from the lower cylindrical structure, of the upper cylindrical structure, the inner side of the lower annular sealing cover is connected to the outer surface of the guide structure, and the outer side of the lower annular sealing cover is connected to one end, deviating from the upper cylindrical structure, of the lower cylindrical structure.

In some embodiments, the base part comprises a base body and a connector, wherein the base body is provided with a first installation cavity, a second installation cavity and a communication cavity, the first installation cavity is communicated with the second installation cavity through the communication cavity, one end of the shell is connected with the base body and is arranged in the first installation cavity, the guide structure is arranged in the communication cavity, and the connector is arranged in the second installation cavity.

In some embodiments, the main feeder comprises a feeder inner conductor, a feeder insulating medium, a feeder outer conductor and a feeder insulating sheath which are sleeved in sequence from inside to outside, wherein the feeder insulating medium separates the feeder inner conductor and the feeder outer conductor;

The connector comprises an inner-layer connecting terminal, an insulating ring and an outer-layer connecting terminal, wherein the insulating ring is sleeved on the inner-layer connecting terminal, the outer-layer connecting terminal is sleeved on the insulating ring, the cavity wall of the second mounting cavity is sleeved on the outer-layer connecting terminal, and the insulating ring separates the outer-layer connecting terminal from the inner-layer connecting terminal;

The feeder inner layer conductor is connected to the inner layer connection terminal, and the feeder outer layer conductor is connected to the outer layer connection terminal.

In some embodiments, the base component further comprises a fixing support, the fixing support is sleeved on the base body, a limiting groove is formed in the outer surface of the base body, a limiting block is arranged on the fixing support, and the limiting block is abutted to the groove wall of the limiting groove, so that the base body is fixed relative to the fixing support.

In some embodiments, the number of the limiting grooves is a plurality, and all the limiting grooves are uniformly distributed around the central axis of the base body.

In some embodiments, the end cap comprises a body, a first annular wall and a second annular wall coaxially disposed and each connected to an end of the body facing the base member, an outer surface of the first annular wall and an inner surface of the second annular wall having a gap therebetween;

The first annular wall is sleeved on the guide structure, one end of the guide structure is abutted against the main body, the second annular wall is sleeved on the shell, and one end of the shell is abutted against the main body.

The utility model also provides a communication device in another embodiment, comprising any one of the omni-directional antennas described above.

Compared with the prior art, the multiplexer can respectively transmit currents with different frequencies to the first frequency band antenna and the second frequency band antenna, so that the first frequency band antenna can generate effective radiation to radio signals of one frequency band, the second frequency band antenna can generate effective radiation to radio signals of the other frequency band, and finally the omni-directional antenna in the embodiment can generate effective radiation to radio signals of two frequency bands at the same time.

In addition, the main feeder line is separated from other components by the guide structure, the main feeder line does not occupy too much space outside the guide structure in the shell, the interference of the main feeder line to other components is reduced, and meanwhile, the internal structure of the omnidirectional antenna is more compact and firm.

Since the communication device includes the omni-directional antenna, the omni-directional antenna in this embodiment can generate effective radiation to the radio signals of the two frequency bands at the same time, and further the communication device can transmit and receive the radio signals of the two frequency bands at the same time.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures are not to be considered limiting, unless expressly stated otherwise.

Fig. 1 is a perspective view of an omni-directional antenna in one embodiment of the present utility model;

Fig. 2 is a perspective view of the omni-directional antenna of fig. 1 with the housing, end cap, and base member omitted;

fig. 3 is a cross-sectional view of the omni-directional antenna of fig. 1;

fig. 4 is a partial cross-sectional view of the omni-directional antenna of fig. 1;

Fig. 5 is a perspective view of the base member of the omni-directional antenna of fig. 1 with the anchor bracket omitted;

Fig. 6 is a cross-sectional view of the omni-directional antenna of fig. 1 with the base body and the connector removed from each other;

Fig. 7 is a partial cross-sectional view of the omni-directional antenna of fig. 1 at another location;

fig. 8 is a perspective view of a fixed mount for the omni-directional antenna of fig. 1;

Fig. 9 is a perspective view of an end cap of the omni-directional antenna of fig. 1.

Reference numerals:

100. An omni-directional antenna; 10, a shell assembly; 12, a guiding structure; the antenna assembly comprises a housing, 16, an end cover, 162, a main body, 164, a first annular wall, 166, a second annular wall, 18, a base component, 182, a base body, 18202, a first mounting groove, 18204, a second mounting groove, 18206, a communication cavity, 18208, a limit groove, 1822, an annular protrusion, 184, a connector, 1842, an inner connecting terminal, 1844, an insulating ring, 1846, an outer connecting terminal, 186, a fixed bracket, 1862, a stopper, 1864, an abutting end face, 20, a first band antenna, 21, a first radiating element, 212, a first upper radiating arm, 2122, an upper cylindrical structure, 2124, an upper annular cover, 214, a first lower radiating arm, 2142, a lower cylindrical structure, 2144, a lower annular cover, 22, a third radiating element, 222, a third upper radiating arm, 224, a third lower radiating arm, 23, a first power divider, 232, a first input end, 234, a first output end, 24, a first radio frequency band antenna, 242, a first inner conductor, 248, a second inner conductor, a first inner conductor, a second conductor, 32, a third conductor, 35, a fourth outer radiating arm, a first antenna, a second conductor, a third conductor, a fourth antenna, a third antenna, a fourth antenna, a first outer layer, a conductor, a third antenna, a fourth antenna, a 8, a third antenna, a fourth antenna, a third, a fourth antenna, a fourth, a third, a fourth, an upper radiating arm, a lower, a, an, an upper, third, radiating,.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "connected" to another element, it can be directly on the other element or intervening elements may be present. The terms "upper," "lower," "left," "right," "upper," "lower," "top," and "bottom," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

An omni-directional antenna 100 according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, an omni-directional antenna 100 according to an embodiment of the present utility model includes a housing assembly 10, a first band antenna 20, a second band antenna 30, a multiplexer 40 and a main feeder 50, wherein the housing assembly 10 includes a guiding structure 12 and a housing 14, the guiding structure 12 is installed in the housing 14, the first band antenna 20 includes a first radiating element 21 for receiving or transmitting signals, the first band antenna 20 is installed in the housing 14, the second band antenna 30 includes a second radiating element 31 for receiving or transmitting signals, the second band antenna 30 is coaxially disposed with the first band antenna 20, the multiplexer 40 is installed in the housing 14, the multiplexer 40 is located between the first band antenna 20 and the second band antenna 30, the multiplexer 40 includes a common port 44 and at least two antenna connection ports 42, the first band antenna 20 and the second band antenna 30 are connected to the multiplexer 40 through the antenna connection ports 42, and one end of the main feeder 50 is connected to the common port 44 and the main feeder 50 is installed in the housing 14.

Through the above structure, the communication device transmits the electric signal to the multiplexer 40 via the main feeder 50, the multiplexer 40 can transmit the electric currents with different frequencies to the first frequency band antenna 20 and the second frequency band antenna 30, so that the first frequency band antenna 20 can generate effective radiation for the radio signal of one frequency band, and the second frequency band antenna 30 can generate effective radiation for the radio signal of another frequency band, and finally the omni-directional antenna 100 in the embodiment can generate effective radiation for the radio signals of two frequency bands at the same time.

In addition, the guide structure 12 separates the main feeder 50 from other components, so that the main feeder 50 does not occupy too much space outside the guide structure 12 in the housing 14, interference of the main feeder 50 to other components is reduced, and meanwhile, the internal structure of the omnidirectional antenna 100 is more compact and firm.

Specifically, in the present embodiment, the multiplexer 40 is a duplexer, the omni-directional antenna 100 is in a cylindrical structure, the first band antenna 20 includes a first radiating element 21 and a third radiating element 22, a power divider is disposed between the first radiating element 21 and the third radiating element 22, the power divider maintains the power and the current frequency in the first radiating element 21 and the third radiating element 22 to be consistent, and the second band antenna 30 has the same structure as the first band antenna 20.

In other embodiments, the multiplexer 40 may be a triplexer, the corresponding omni-directional antenna 100 further includes a third band antenna, the omni-directional antenna 100 may be in other shapes, such as a cuboid, the first band antenna 20 may include only the first radiating element 21, and the second band antenna 30 may include only the second radiating element 31.

In some embodiments, the first band antenna 20 includes a first radiating element 21, a third radiating element 22, a first power divider 23, a first radio frequency line 24 and a third radio frequency line 25, the first radiating element 21 includes a first upper radiating arm 212 and a first lower radiating arm 214 _,, the third radiating element 22 includes a third upper radiating arm 222 and a third lower radiating arm 224, the first power divider 23 is located between the first radiating element 21 and the third radiating element 22, the first power divider 23 includes a first input 232 and two first outputs 234, the first input 232 is connected to one antenna connection port 42, one first output 234 is connected to the first upper radiating arm 212 and the first lower radiating arm 214 via the first radio frequency line 24, and the other first output 234 is connected to the third upper radiating arm 222 and the third lower radiating arm 224 via the third radio frequency line 25.

The second band antenna 30 comprises a second radiating element 31, a fourth radiating element 32, a second power divider 33, a second radio frequency line 34 and a fourth radio frequency line 35, wherein the second radiating element 31 comprises a second upper radiating arm 312 and a second lower radiating arm 314, the fourth radiating element 32 comprises a fourth upper radiating arm 322 and a fourth lower radiating arm 324, the second power divider 33 is arranged between the second radiating element 31 and the fourth radiating element 32, the second power divider 33 comprises a second input end 332 and two second output ends 334, the second input end 332 is connected with the other antenna connecting port 42, one second output end 334 is connected with the second upper radiating arm 312 and the second lower radiating arm 314 through the second radio frequency line 34, and the other second output end 334 is connected with the fourth upper radiating arm 322 and the fourth lower radiating arm 324 through the fourth radio frequency line 35.

Through the above structure, the first power divider 23 divides the electric signal in the main feeder 50 into two electric signals with equal frequency and power, wherein one electric signal is transmitted to the first radiating unit 21 through the first radio frequency line 24, and the other electric signal is transmitted to the third radiating unit 22 through the third radio frequency line 25, so that the first radiating unit 21 and the third radiating unit 22 superimpose the radio signals, and the first frequency band antenna 20 can generate a higher gain. Similarly, the second band antenna 30 can also produce higher gain.

Specifically, in the present embodiment, the outer shape of the first upper radiating arm 212 and the outer shape of the first lower radiating arm 214 are both in a cylindrical structure, the first upper radiating arm 212 and the first lower radiating arm 214 are identical in structure, the first upper radiating arm 212 and the first lower radiating arm 214 are coaxially arranged and oppositely arranged, the first radiating unit 21 and the third radiating unit 22 are identical in structure and size, the second radiating unit 31 and the fourth radiating unit 32 are identical in structure and size, the first radiating unit 21 and the second radiating unit 31 are identical in structure, but the first radiating unit 21, the third radiating unit 22, the second radiating unit 31 and the fourth radiating unit 32 are coaxially arranged.

In other embodiments, the first upper radiating arm 212 may have other shapes, such as a polygonal column or a truncated cone in cross-section.

Referring to fig. 4, in some embodiments, the first upper radiating arm 212 includes an upper cylindrical structure 2122 and an upper annular cover 2124, the first lower radiating arm 214 includes a lower cylindrical structure 2142 and a lower annular cover 2144, the upper cylindrical structure 2122 and the lower cylindrical structure 2142 are coaxially disposed and have the same structure, the upper annular cover 2124 is connected to an end of the upper cylindrical structure 2122 facing away from the lower cylindrical structure 2142, and the lower annular cover 2144 is connected to an end of the lower cylindrical structure 2142 facing away from the upper cylindrical structure 2122.

The first rf line 24 includes a first inner conductor 242, a first insulating medium 244, a first outer conductor 246 and a first insulating sheath 248 sequentially sleeved from inside to outside, the first insulating medium 244 separates the first inner conductor 242 from the first outer conductor 246, the first inner conductor 242 is connected to an end of the lower cylindrical structure 2142 facing the upper cylindrical structure 2122, and the first outer conductor 246 is connected to an end of the upper cylindrical structure 2122 facing the lower cylindrical structure 2142.

With the above structure, the first insulating medium 244 separates the first inner conductor 242 and the first outer conductor 246, and thus the first inner conductor 242 and the first outer conductor 246 are not electrically connected to each other, so that the first upper radiating arm 212 and the first lower radiating arm 214 can be independent from each other, and thus the first radiating unit 21 can generate effective radiation to radio signals.

Specifically, in the present embodiment, the upper cylindrical structure 2122 and the lower cylindrical structure 2142 are both cylindrical and have the same structure, the upper annular cover 2124 and the lower annular cover 2144 are both circular sheet structures and have the same structure, the first inner conductor 242 is connected to the lower cylindrical structure 2142 by welding, and the first outer conductor 246 is also connected to the upper cylindrical structure 2122 by welding. In other embodiments, the upper cylinder 2122 and the lower cylinder 2142 may have other shapes, such as a cylinder with a polygonal cross section, and the corresponding upper ring-shaped cover 2124 and lower ring-shaped cover 2144 may have a polygonal sheet-like structure.

The second radio frequency line 34 includes a second inner conductor, a second insulating medium, a second outer conductor and a second insulating sheath that are sequentially sleeved from inside to outside, and the second insulating medium separates the second inner conductor and the second outer conductor. The second inner conductor is connected to the second lower radiating arm 314 by soldering, and the second outer conductor is also connected to the second upper radiating arm 312 by soldering.

The third radio frequency wire 25 includes a third inner conductor, a third insulating medium, a third outer conductor and a third insulating sheath, which are sequentially sleeved from inside to outside, and the third insulating medium separates the third inner conductor and the third outer conductor. The third inner conductor is connected to the third lower radiating arm 224 by welding and the third outer conductor is also connected to the third upper radiating arm 222 by welding.

The fourth radio frequency line 35 includes a fourth inner conductor, a fourth insulating medium, a fourth outer conductor, and a fourth insulating sheath that are sequentially sleeved from inside to outside, and the fourth insulating medium separates the fourth inner conductor from the fourth outer conductor. The fourth inner conductor is connected to the fourth lower radiating arm 324 by soldering and the fourth outer conductor is also connected to the fourth upper radiating arm 322 by soldering.

In some embodiments, the housing assembly 10 further includes an end cap 16 and a base member 18, the guide structure 12 is disposed coaxially with the housing 14, one end of the guide structure 12 and one end of the housing 14 are both connected to the end cap 16, and the other end of the guide structure 12 and the other end of the housing 14 are both connected to the base member 18.

The first rf line 24, the second rf line 34, the third rf line 25 and the fourth rf line 35 are all disposed in the guide structure 12 in a penetrating manner, the first power divider 23, the second power divider 33 and the multiplexer 40 are all mounted on the outer surface of the guide structure 12, the inner side of the upper annular cover 2124 is connected to the outer surface of the guide structure 12, the outer side of the upper annular cover 2124 is connected to one end of the upper cylindrical structure 2122, which is away from the lower cylindrical structure 2142, the inner side of the lower annular cover 2144 is connected to the outer surface of the guide structure 12, and the outer side of the lower annular cover 2144 is connected to one end of the lower cylindrical structure 2142, which is away from the upper cylindrical structure 2122.

Through the above structure, the inner space of the guiding structure 12 is used for the main feeder 50, the first radio frequency wire 24, the second radio frequency wire 34, the third radio frequency wire 25 and the fourth radio frequency wire 35 to penetrate, the outer surface of the guiding structure 12 is used for the power divider, the multiplexer 40, the upper annular cover 2124 and the lower annular cover 2144 to be connected, the housing 14 is used for surrounding the first band antenna 20, the second band antenna 30 and the multiplexer 40 to avoid exposing components in the omnidirectional antenna 100, the end cover 16 and the base component 18 seal two ends of the housing 14, and the end cover 16 and the base component 18 both support the guiding structure 12 and the housing 14, so that the outer surface of the guiding structure 12 and the inner surface of the housing 14 are separated from each other. Eventually, the omni-directional antenna 100 in the present embodiment is compact and firm.

Specifically, in this embodiment, the guide structure 12 is made of steel, the guide structure 12 and the housing 14 are both cylindrical structures coaxially disposed, the diameter of the guide structure 12 is smaller than that of the housing 14, and the length of the guide structure 12 is adapted to the length of the housing 14. The upper annular sealing cover 2124 and the lower annular sealing cover 2144 are connected with the guide structure 12 in a welding mode, a plurality of round through holes and a plurality of round mounting holes are formed in the side wall of the guide structure 12, the end parts of the first radio frequency wire 24, the second radio frequency wire 34, the third radio frequency wire 25 and the fourth radio frequency wire 35 penetrate out of the guide structure 12 through the through holes, the multiplexer 40 and the power divider are of plate-shaped structures, and the multiplexer 40 and the power divider are mounted on the guide structure 12 through the mounting holes and screws. The guide structure 12 is fixedly connected with the end cover 16, the shell 14 is fixedly connected with the end cover 16, the guide structure 12 is fixedly connected with the base part 18, and the shell 14 is fixedly connected with the base part 18 in a glue spraying manner.

In other embodiments, the guide structure 12 may be made of other materials, such as copper, the guide structure 12 and the housing 14 may be formed of other structures, such as a cylindrical structure with a polygonal cross section, the multiplexer 40 and the power divider may be connected to the guide structure 12 by other means, such as a mounting frame welded to the guide structure 12, and the multiplexer 40 and the power divider may be connected to the mounting frame.

Referring to fig. 5 and 6, in some embodiments, the base member 18 includes a base body 182 and a connector 184, the base body 182 is provided with a first mounting cavity 18202, a second mounting cavity 18204 and a communication cavity 18206, the first mounting cavity 18202 is communicated with the second mounting cavity 18204 through the communication cavity 18206, one end of the housing 14 is connected to the base body 182 and placed in the first mounting cavity 18202, the guide structure 12 is installed in the communication cavity 18206, and the connector 184 is installed in the second mounting cavity 18204.

With the above structure, the first mounting cavity 18202 provides a mounting space for one end of the housing 14, the communication cavity 18206 provides a mounting space for one end of the guiding structure 12, the second mounting cavity 18204 provides a mounting space for the connector 184, and the base body 182 separates the connector 184 from the housing 14, and the base body 182 also separates the outer surface of the guiding structure 12 and the inner surface of the housing 14, so that the omni-directional antenna 100 in this embodiment is more stable in structure.

Specifically, in the present embodiment, the first installation cavity 18202, the communication cavity 18206 and the second installation cavity 18204 are all coaxially arranged cylinders, the diameter of the first installation cavity 18202 is larger than that of the second installation cavity 18204 and that of the communication cavity 18206, the diameter of the second installation cavity 18204 is larger than that of the communication cavity 18206, the first installation cavity 18202 penetrates through one end of the base body 182, the second installation cavity 18204 penetrates through the other end of the base body 182, an annular protrusion 1822 is arranged on a side cavity wall of the first installation cavity 18202, the annular protrusion 1822 is connected to a bottom cavity wall of the first installation cavity 18202, and one end of the annular protrusion 1822, which faces away from the bottom cavity wall of the first installation cavity 18202, is abutted against the end of the housing 14, so that the end of the housing 14 is separated from the bottom cavity wall of the first installation cavity 18202.

In other embodiments, the first mounting cavity 18202, the communication cavity 18206, and the second mounting cavity 18204 may have other shapes, such as a rectangular parallelepiped, and the end of the housing 14 may also directly abut the bottom cavity wall of the first mounting cavity 18202.

Referring to fig. 7, in some embodiments, the main feeder 50 includes a feeder inner conductor 52, a feeder insulating medium 54, a feeder outer conductor 56, and a feeder insulating jacket 58 that are sleeved in sequence from inside to outside, the feeder insulating medium 54 separating the feeder inner conductor 52 and the feeder outer conductor 56.

The connector 184 includes an inner connection terminal 1842, an insulating ring 1844, and an outer connection terminal 1846, the insulating ring 1844 is sleeved on the inner connection terminal 1842, the outer connection terminal 1846 is sleeved on the insulating ring 1844, the outer connection terminal 1846 is sleeved on the cavity wall of the second mounting cavity 18204, and the insulating ring 1844 separates the outer connection terminal 1846 from the inner connection terminal 1842.

The feeder inner layer conductor 52 is connected to the inner layer connection terminal 1842, and the feeder outer layer conductor 56 is connected to the outer layer connection terminal 1846.

With the above structure, the feeder insulating medium 54 separates the feeder inner layer conductor 52 and the feeder outer layer conductor 56 such that the feeder inner layer conductor 52 and the feeder outer layer conductor 56 are not electrically connected to each other, and the insulating ring 1844 separates the inner layer connection terminal 1842 and the outer layer connection terminal 1846 such that the inner layer connection terminal 1842 and the outer layer connection terminal 1846 are not electrically connected to each other, and further the feeder inner layer conductor 52 and the inner layer connection terminal 1842 can be electrically connected more stably, and the feeder outer layer conductor 56 and the outer layer connection terminal 1846 can be electrically connected more stably.

Specifically, in the present embodiment, the inner-layer connection terminal 1842 has a hollow cylindrical structure, the insulating ring 1842 is located at one end of the inner-layer connection terminal 1842 facing the guiding structure 12, the inner surface of the outer-layer connection terminal 1846 abuts against the outer surface of the insulating ring 1844, and the outer surface of the outer-layer connection terminal 1846 abuts against the cavity wall of the second mounting cavity 18204. The outer layer connection terminal 1846 and the feeder outer layer conductor 56, and the inner layer connection terminal 1842 and the feeder inner layer conductor 52 are all connected by welding.

In other embodiments, the inner layer connection terminal 1842 may have other structures, such as a cylinder, and the insulating ring 1844 may be disposed at other positions of the inner layer connection terminal 1842, such as the middle.

Referring to fig. 8, in some embodiments, the base member 18 further includes a fixing bracket 186, the fixing bracket 186 is sleeved on the base body 182, a limiting groove 18208 (see fig. 7) is formed on an outer surface of the base body 182, a limiting block 1862 is formed on the fixing bracket 186, and the limiting block 1862 abuts against a groove wall of the limiting groove 18208, so that the base body 182 is fixed relative to the fixing bracket 186.

Through the above structure, the fixing bracket 186 can be connected with the communication device, and the limiting block 1862 is abutted against the groove wall of the limiting groove 18208, so that the base body 182 cannot rotate relative to the fixing bracket 186, and stability of the omnidirectional antenna 100 in this embodiment is improved.

Specifically, in this embodiment, one section of the fixing bracket 186 is a cylinder, the other section is a waist-shaped block, the fixing bracket 186 is of a hollow structure, and the fixing bracket 186 can be sleeved on the base body 182, the limiting block 1862 protrudes toward the hollow portion of the fixing bracket 186, the limiting block 1862 includes a rectangular abutting end face 1864, the abutting end face 1864 abuts against the groove wall of the limiting groove 18208, the number of the limiting blocks 1862 is one, the number of the limiting grooves 18208 is four, and the limiting block 1862 is matched with one limiting groove 18208.

In other embodiments, the fixing support 186 may have other shapes, such as a cuboid, the abutting end surface 1864 may have other shapes, such as a circle, the number of the limiting blocks 1862 may be multiple, and the limiting blocks 1862 and the limiting grooves 18208 are in one-to-one correspondence, or the number of the limiting grooves 18208 and the number of the limiting blocks 1862 are both one.

In some embodiments, the number of limit slots 18208 is multiple, with all of the limit slots 18208 being evenly distributed about the central axis of the base body 182.

Through the structure, when the limiting block 1862 is matched with any one of the limiting grooves 18208, the limiting block 1862 can limit the base body 182, and then the fixing support 186 and the base body 182 are easier to assemble.

Referring to fig. 9, in some embodiments, the end cap 16 includes a main body 162, a first annular wall 164 and a second annular wall 166, the first annular wall 164 and the second annular wall 166 being coaxially disposed and each connected to an end of the main body 162 facing the base member 18, with a gap between an outer surface of the first annular wall 164 and an inner surface of the second annular wall 166.

The first annular wall 164 is sleeved on the guide structure 12, one end of the guide structure 12 is abutted against the main body 162, and the second annular wall 166 is sleeved on the housing 14, one end of the housing 14 is abutted against the main body 162.

Through the structure, the first annular wall 164 and the second annular wall 166 are both connected to the main body 162, so that the first annular wall 164 is fixed relative to the second annular wall 166, the first annular wall 164 is sleeved on the guiding structure 12, so that one end of the guiding structure 12 is fixed relative to the end cover 16, and meanwhile, the second annular wall 166 is sleeved on the housing 14, so that the same end of the housing 14 is fixed relative to the end cover 16, and further, the housing 14 and the guiding structure 12 are separated from each other and are not easy to shake, so that the stability of the omnidirectional antenna 100 in the embodiment is further improved.

Specifically, the first annular wall 164 and the second annular wall 166 are both coaxially disposed and have the same cylindrical structure, the main body 162 is a circular sheet structure, and the outer diameter of the main body 162 is adapted to the outer diameter of the second annular wall 166.

Another embodiment of the present utility model also provides a communication device including any of the omni-directional antennas 100 described above. In this embodiment, the wireless device may be an unmanned aerial vehicle or a ground station, and in other embodiments, the wireless device may also be a communication device or other device capable of receiving or transmitting signals.

Since the omni-directional antenna 100 in this embodiment can generate effective radiation to radio signals of two frequency bands at the same time, the communication device can also transmit and receive radio signals of two frequency bands at the same time.

It should finally be noted that the above embodiments are only intended to illustrate the technical solution of the present utility model and not to limit it, that the technical features of the above embodiments or of the different embodiments may be combined in any order, and that many other variations in the different aspects of the present utility model as described above exist, which are not provided in details for the sake of brevity, and that, although the present utility model is described in the detailed description with reference to the foregoing embodiments, it should be understood by those skilled in the art that modifications may be carried out to the technical solution described in the foregoing embodiments or to the equivalent substitution of some of the technical features thereof, where these modifications or substitutions do not depart from the essence of the corresponding technical solution from the scope of the technical solution of the embodiments of the present utility model.

Claims

1. An omnidirectional antenna, comprising:

A housing assembly, the housing assembly comprising a guide structure and a housing, the guide structure being installed in the housing;

A first frequency band antenna, the first frequency band antenna is installed in the housing, the first frequency band antenna comprises a first radiation unit, and the first frequency band antenna is used to receive or transmit signals;

A second frequency band antenna, the second frequency band antenna is installed in the housing, the second frequency band antenna includes a second radiation unit, the second frequency band antenna is used to receive or transmit signals, and the second frequency band antenna is coaxially arranged with the first frequency band antenna;

a multiplexer, the multiplexer being installed in the housing, the multiplexer being located between the first frequency band antenna and the second frequency band antenna, the multiplexer comprising a common port and at least two antenna connection ports, the first frequency band antenna and the second frequency band antenna being connected to the multiplexer via the antenna connection ports;

A main feeder line, one end of which is connected to the common port, and the main feeder line is passed through the guide structure.

2. The omnidirectional antenna according to claim 1, characterized in that the first frequency band antenna comprises a first radiating unit, a third radiating unit, a first power divider, a first radio frequency line and a third radio frequency line;

The first radiation unit includes a first upper radiation arm and a first lower radiation arm, and the third radiation unit includes a third upper radiation arm and a third lower radiation arm;

The first power divider is located between the first radiation unit and the third radiation unit, and the first power divider includes a first input end and two first output ends, the first input end is connected to one of the antenna connection ports; one of the first output ends is connected to the first upper radiation arm and the first lower radiation arm via the first radio frequency line, and the other first output end is connected to the third upper radiation arm and the third lower radiation arm via the third radio frequency line;

The second frequency band antenna includes a second radiation unit, a fourth radiation unit, a second power divider, a second radio frequency line and a fourth radio frequency line;

The second radiation unit includes a second upper radiation arm and a second lower radiation arm, and the fourth radiation unit includes a fourth upper radiation arm and a fourth lower radiation arm;

The second power divider is located between the second radiation unit and the fourth radiation unit, and the second power divider includes a second input end and two second output ends, the second input end is connected to another antenna connection port; one second output end is connected to the second upper radiation arm and the second lower radiation arm via the second radio frequency line, and the other second output end is connected to the fourth upper radiation arm and the fourth lower radiation arm via the fourth radio frequency line.

3. The omnidirectional antenna according to claim 2, characterized in that the first upper radiating arm comprises an upper cylindrical structure and an upper annular cover, the first lower radiating arm comprises a lower cylindrical structure and a lower annular cover, the upper cylindrical structure and the lower cylindrical structure are coaxially arranged and have the same structure, the upper annular cover is connected to one end of the upper cylindrical structure away from the lower cylindrical structure, and the lower annular cover is connected to one end of the lower cylindrical structure away from the upper cylindrical structure;

The first radio frequency line includes a first inner conductor, a first insulating medium, a first outer conductor and a first insulating sheath which are sequentially sleeved from the inside to the outside, the first insulating medium separates the first inner conductor from the first outer conductor, the first inner conductor is connected to one end of the lower cylindrical structure facing the upper cylindrical structure, and the first outer conductor is connected to one end of the upper cylindrical structure facing the lower cylindrical structure.

4. The omnidirectional antenna according to claim 3, characterized in that the shell assembly further comprises an end cap and a base component, the guide structure is coaxially arranged with the shell, one end of the guide structure and one end of the shell are both connected to the end cap, and the other end of the guide structure and the other end of the shell are both connected to the base component;

The first RF line, the second RF line, the third RF line and the fourth RF line are all inserted into the guide structure, and the first power divider, the second power divider and the multiplexer are all installed on the outer surface of the guide structure; the inner side of the upper annular cover is connected to the outer surface of the guide structure, and the outer side of the upper annular cover is connected to one end of the upper cylindrical structure away from the lower cylindrical structure; the inner side of the lower annular cover is connected to the outer surface of the guide structure, and the outer side of the lower annular cover is connected to one end of the lower cylindrical structure away from the upper cylindrical structure.

5. The omnidirectional antenna according to claim 4 is characterized in that the base component includes a base body and a joint, the base body is provided with a first installation cavity, a second installation cavity and a connecting cavity, the first installation cavity is connected with the second installation cavity through the connecting cavity; one end of the shell is connected to the base body and placed in the first installation cavity, the guide structure is installed in the connecting cavity, and the joint is installed in the second installation cavity.

6. The omnidirectional antenna according to claim 5, characterized in that the main feeder comprises a feeder inner conductor, a feeder insulating medium, a feeder outer conductor and a feeder insulating sheath which are sequentially sleeved from the inside to the outside, and the feeder insulating medium separates the feeder inner conductor from the feeder outer conductor;

The connector comprises an inner connection terminal, an insulating ring and an outer connection terminal, the insulating ring is sleeved on the inner connection terminal, the outer connection terminal is sleeved on the insulating ring, the cavity wall of the second mounting cavity is sleeved on the outer connection terminal, and the insulating ring separates the outer connection terminal from the inner connection terminal;

The inner conductor of the feeder is connected to the inner connection terminal, and the outer conductor of the feeder is connected to the outer connection terminal.

7. The omnidirectional antenna according to claim 5 is characterized in that the base component also includes a fixing bracket, which is sleeved on the base body, and a limiting groove is opened on the outer surface of the base body. A limiting block is provided on the fixing bracket, and the limiting block abuts against the groove wall of the limiting groove, so that the base body is fixed relative to the fixing bracket.

8 . The omnidirectional antenna according to claim 7 , wherein there are multiple limiting grooves, and all of the limiting grooves are evenly distributed around the central axis of the base body.

9. The omnidirectional antenna according to claim 4, characterized in that the end cover comprises a main body, a first annular wall and a second annular wall, the first annular wall and the second annular wall are coaxially arranged and both connected to one end of the main body facing the base component, and there is a gap between the outer surface of the first annular wall and the inner surface of the second annular wall;

The first annular wall is sleeved on the guide structure, and one end of the guide structure is in contact with the main body; the second annular wall is sleeved on the outer shell, and one end of the outer shell is in contact with the main body.

10. A communication device, characterized by comprising the omnidirectional antenna according to any one of claims 1 to 9.