Communication antenna and communication device

Abstract

The invention provides a communication antenna and communication equipment, the communication antenna comprises a seat body and a plurality of radiation units, the radiation units are arranged on the seat body, the main lobe directions of the radiation units deviate from the seat body, and an included angle is formed between the main lobe directions of any two radiation units. And the beam width of the radiation unit is smaller than or equal to the included angle. The communication antenna provided by the invention has the advantages of large beam coverage area and high isolation among multiple antennas.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and more particularly, relates to a communication antenna and a communication device. Background Art

[0002] With the acceleration of digital transformation and the continuous development of wireless technologies, the demand for wireless communication in ultra-high density scenarios is increasing day by day. For example, in large stadiums, convention centers, airport waiting halls, large offices and other places, the personnel are dense and mobile, which puts forward higher requirements for the coverage, capacity, rate and stability of the wireless network. However, the communication antennas in related technologies have problems of a relatively small beam coverage area and a relatively low isolation degree between antennas. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a communication antenna and a communication device, so as to solve the technical problems of the relatively small beam coverage area and the relatively low isolation degree between antennas existing in the communication antennas in the prior art.

[0004] In a first aspect, the embodiments of this application provide a communication antenna.

[0005] The communication antenna provided by the embodiments of this application includes a base; a plurality of radiation units, the radiation units are arranged on the base and the main lobe directions of the radiation units deviate from the base, there is an included angle between the main lobe directions of any two of the radiation units, and the beam width of the radiation unit is less than or equal to the included angle.

[0006] The beneficial effects of the communication antenna provided by the embodiments of this application are as follows: Compared with the prior art, the main lobe directions of any two radiation units of the communication antenna provided by the embodiments of this application are different, which improves the beam coverage area of the communication antenna provided by this application. There is an included angle between adjacent two radiation units of the communication antenna provided by the embodiments of this application, and the beam width of the radiation unit is less than or equal to the included angle, so as to reduce the coupling effect between the multiple beams generated by the multiple radiation units, thereby improving the isolation degree between the multiple radiation units of the communication antenna provided by the embodiments of this application.

[0007] In some embodiments, optionally, the radiation unit includes a feeding network, a first radiator and a plurality of second radiators, the first radiator and the second radiators are both connected to the feeding network, and the first radiator is arranged between any two of the second radiators;

[0008] Wherein, the amplitude of the electrical signal input by the feeding network to the first radiator is greater than the amplitude of the electrical signal input by the feeding network to the second radiator.

[0009] In some embodiments, optionally, the plurality of radiation units are arranged in an arc array, and the main lobe direction of the radiation unit extends along the radial direction of the arc array;

[0010] Wherein, the angle between the polarization direction of one of the two adjacent radiation units and the tangent direction of the arc array is different from the angle between the polarization direction of the other of the two adjacent radiation units and the tangent direction of the arc array.

[0011] In some embodiments, optionally, the polarization direction of one of the two adjacent radiation units is the tangent direction of the arc array, and the polarization direction of the other of the two adjacent radiation units is orthogonal to the tangent direction of the arc array.

[0012] In some embodiments, optionally, the angle between the polarization direction of one of the two adjacent radiation units and the tangent direction of the arc array is 45°, and the angle between the polarization direction of the other of the two adjacent radiation units and the tangent direction of the arc array is 315°.

[0013] In some embodiments, optionally, the operating frequency bands of the plurality of radiation units are all within the operating frequency band of the communication antenna, and there is an interval frequency band between the operating frequency bands of two adjacent radiation units.

[0014] In some embodiments, optionally, there is the interval frequency band between the operating frequency bands of any two radiation units.

[0015] In some embodiments, optionally, the plurality of radiation units include a first unit, a third unit and at least one second unit, the second unit is arranged between the first unit and the third unit, the first unit operates in a first frequency band, the second unit operates in a second frequency band, and the third unit operates in a third frequency band;

[0016] Wherein, both the first frequency band and the third frequency band are greater than the second frequency band, or both the first frequency band and the third frequency band are less than the second frequency band.

[0017] In some embodiments, optionally, there are a plurality of second units, the operating frequency of one of the plurality of second units is greater than the first frequency band and the third frequency band, and the operating frequency band of the other of the plurality of second units is less than the first frequency band and the third frequency band.

[0018] In a second aspect, an embodiment of the present application further provides a communication device.

[0019] The communication device provided by the embodiment of the present application includes the communication antenna described in any of the above embodiments.

[0020] It is understandable that the beneficial effects of the second aspect described above can be referred to the relevant descriptions in the first aspect, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of the communication antenna provided by the embodiment of the present application Figure 1 ;

[0023] Figure 2 Structural schematic diagram of the communication antenna provided by the embodiment of the present application Figure 2 ;

[0024] Figure 3 Structural schematic diagram of the radiation unit of the communication antenna provided by the embodiment of the present application;

[0025] Figure 4 Structural schematic diagram of the radiation unit of the communication antenna provided by another embodiment of the present application;

[0026] Figure 5 Structural schematic diagram of the communication antenna provided by another embodiment of the present application.

[0027] Among them, the reference numerals in the drawings:

[0028] 100, communication antenna;

[0029] 10, base body;

[0030] 20, radiation unit; 201, arc array; 202, circumferential array; 21, dielectric substrate; 22, first radiator; 23, second radiator; 24, feeding network; 241, feeding port; 001, first unit; 002, second unit; 003, third unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clear, the following further details the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0035] Please refer to Figure 1 and Figure 2 simultaneously, and now the communication antenna 100 provided by the embodiment of the present application will be described.

[0036] The communication antenna 100 includes a base body 10 and a plurality of radiation units 20.

[0037] As Figure 1 and Figure 2 shown, the base body 10 is used to fixedly install a plurality of radiation units 20, so as to fixedly install the plurality of radiation units 20 at the installation position of the communication antenna 100 through the base body 10.

[0038] The radiation unit 20 is disposed on the base body 10 and the main lobe direction of the radiation unit 20 deviates from the base body 10. There is an included angle between the main lobe directions of any two radiation units 20, and the beam width of the radiation unit 20 is less than or equal to the included angle.

[0039] The main lobe direction of the radiation unit 20 is the direction of the maximum radiation beam on the radiation pattern of the radiation unit 20. The main lobe direction of the radiation unit 20 represents the main propagation direction of the electromagnetic wave generated by the radiation unit 20. There is an included angle between the main lobe directions of the plurality of radiation units 20, so that the plurality of beams generated by the plurality of radiation units 20 are respectively radiated in different directions, thereby improving the beam coverage range of the antenna array provided by the embodiment of the present application.

[0040] The beam width of the radiation element 20 refers to the width of the main lobe in its radiation pattern, which measures the angular range of the beam generated by the radiation element 20 spreading in the main lobe direction.

[0041] Therefore, the beam width of the radiation element 20 is less than the angle between the main lobe directions of any two radiation elements 20, that is, the beam width of the radiation element 20 with the largest beam width among multiple radiation elements 20 is less than the main lobe direction angle between the two radiation elements 20 with the smallest main lobe direction angle. As Figure 2 shown, the beams generated by two adjacent radiation elements 20 are arranged at intervals, that is, the beams generated by multiple radiation elements 20 do not overlap with each other, reducing the interference between two adjacent radiation elements 20, thereby improving the isolation degree between multiple radiation elements 20.

[0042] The main lobe directions of any two radiation elements 20 of the communication antenna 100 provided in the embodiments of the present application are different, improving the beam coverage area of the communication antenna 100 provided in the present application. There is an angle between two adjacent radiation elements 20 of the communication antenna 100 provided in the embodiments of the present application, and the beam width of the radiation element 20 is less than or equal to the angle, so as to reduce the interference between the multiple beams generated by multiple radiation elements 20, thereby improving the isolation degree between multiple radiation elements 20 of the communication antenna 100 provided in the embodiments of the present application.

[0043] In some embodiments provided by the present application, the radiation element 20 includes a first radiator 22, a plurality of second radiators 23 and a feeding network 24. Both the first radiator 22 and the second radiator 23 are connected to the feeding network 24, and the first radiator 22 is disposed between any two second radiators 23;

[0044] Among them, the amplitude of the electrical signal input to the first radiator 22 by the feeding network 24 is greater than the amplitude of the electrical signal input to the second radiator 23 by the feeding network 24.

[0045] As Figure 3 and Figure 4 shown, there are a plurality of second radiators 23, and some of the plurality of second radiators 23 are arranged at intervals in one-to-one correspondence with another part of the plurality of second radiators 23 along the Figure 3 and Figure 4 shown in the y direction. There are a plurality of first radiators 22, and the plurality of first radiators 22 are disposed between the second radiators 23 arranged at intervals along the Figure 3 and Figure 4 shown in the y direction.

[0046] Both the first radiator 22 and the second radiator 23 are connected to the feeding network 24, and the feeding network 24 is connected to the signal source, so as to conduct the electrical signals in the signal source to the multiple first radiators 22 and the multiple second radiators 23 respectively through the feeding network 24 to excite the first radiator 22 and the second radiator 23 to generate beams respectively.

[0047] The feeding network 24 feeds the first radiator 22 and the second radiator 23 with unequal amplitudes, that is, the amplitude of the electrical signal input by the feeding network 24 to the first radiator 22 is greater than the amplitude of the electrical signal input by the feeding network 24 to the second radiator 23, so that the radiation intensity of the beam generated by the first radiator 22 is greater than the radiation intensity of the beam generated by the second radiator 23.

[0048] Thus, since the first radiator 22 is between the multiple second radiators 23 in Figure 3 and Figure 4 the y direction shown, the radiation intensity of the second radiator 23 is lower than that of the first radiator 22, which can reduce the sidelobe level of the radiation unit 20, so that the radiation unit 20 has the low sidelobe radiation characteristic.

[0049] With such a setting, the radiation intensity of the radiation unit 20 outside its beam width is reduced, and further the interference between two adjacent radiation units 20 is reduced, so that the radiation antenna provided by the embodiment of the present application has a high isolation degree.

[0050] In some embodiments, as Figure 3 and Figure 4 shown, the feeding network 24 includes a feeding port 241, and the width dimension between the feeding port 241 of the feeding network 24 and the first radiator 22 is greater than the width dimension between the feeding port 241 of the feeding network 24 and the second radiator 23, so that the impedance between the feeding port 241 of the feeding network 24 and the first radiator 22 is less than the impedance between the feeding port 241 of the feeding network 24 and the second radiator 23.

[0051] Thus, the amplitudes of the electrical signals input by the feeding network 24 to the first radiator 22 and the second radiator 23 are adjusted through the impedance.

[0052] In some embodiments provided by the present application, the multiple radiation units 20 are arranged along the arc array 201, and the main lobe direction of the radiation unit 20 extends along the radial direction of the arc array 201;

[0053] As Figure 1 and Figure 2As shown, a plurality of radiation units 20 are all arranged on the base body 10, and the plurality of radiation units 20 are arranged in a circular arc-shaped array. Moreover, the main lobe of each radiation unit 20 radiates in a direction away from the axis of the arc-shaped array 201 along the radial direction of the arc-shaped array 201, so that the beams generated by the plurality of radiation units 20 are arranged in a fan shape, thereby improving the beam coverage range of the radiation antenna provided in the embodiment of the present application.

[0054] In some embodiments, as Figure 1 and Figure 2 shown, the communication antenna 100 provided in the present application can be used as a ceiling antenna. Figure 1 and Figure 2 As shown in, the z direction is the vertical up and down direction, and the axis of the arc-shaped array 201 extends along the horizontal direction, so that the beam of the radiation unit 20 in the middle of the arc-shaped array 201 covers the near-field area of the communication antenna 100, and the beams of the plurality of radiation units 20 near the end of the arc-shaped array 201 cover the far-field area of the communication antenna 100.

[0055] In other embodiments provided in the present application, as Figure 5 shown, a plurality of radiation units 20 are arranged in an annular array, and the axis of the annular array extends along the z direction shown in the figure, that is, the plurality of radiation units 20 are arranged in a horizontal annular array. The main lobes of some radiation units 20 extend along the horizontal direction to cover the far-field area of the communication antenna 100, and the main lobes of some radiation units 20 extend along the vertical direction to cover the near-field area of the communication antenna 100.

[0056] In some embodiments provided in the present application, the angle between the polarization direction of one of the two adjacent radiation units 20 and the tangential direction of the arc-shaped array 201 is different from the angle between the polarization direction of the other of the two adjacent radiation units 20 and the tangential direction of the arc-shaped array 201.

[0057] As Figure 1 and Figure 2 shown, a plurality of radiation units 20 are arranged along the circumferential direction of the arc-shaped array 201. The distance between the beams of two adjacent radiation units 20 is relatively close, and the angles between the polarization directions of two adjacent radiation units 20 and the tangential direction of the radiation unit 20 are different, that is, the polarization directions of the beams of two adjacent radiation units 20 do not arrange along the circumferential direction of the arc-shaped array 201, thereby improving the isolation degree between two adjacent radiation units 20, and further improving the beam isolation degree of the communication antenna 100 provided in the present application.

[0058] In some embodiments provided in the present application, the polarization direction of one of the two adjacent radiation units 20 is the tangential direction of the arc-shaped array 201, and the polarization direction of the other of the two adjacent radiation units 20 is orthogonal to the tangential direction of the arc-shaped array 201.

[0059] As Figure 3As shown in (a) thereof, in some radiation units 20, the feeding network 24 is connected to the first radiator 22 on one side in the Figure 3 x direction shown therein, and the feeding network 24 is connected to the second radiator 23 on one side in the Figure 3 x direction shown therein; as Figure 3 shown in (b) thereof, in some other radiation units 20, the feeding network 24 is connected to the first radiator 22 on one side in the Figure 3 y direction shown therein, and the feeding network 24 is connected to the second radiator 23 on one side in the Figure 3 y direction shown therein, Figure 3 the x direction shown therein is orthogonal to the Figure 3 y direction shown therein.

[0060] When the radiation unit 20 is arranged in the arc array 201, Figure 3 the x direction shown therein is the tangential direction of the arc array 201, Figure 3 the radiation units 20 with the polarization direction in the x direction as shown in (a) thereof and Figure 3 the radiation units 20 with the polarization direction in the y direction as shown in (b) thereof are alternately arranged along the circumferential direction of the arc array 201, so that the polarization directions of any two adjacent radiation units 20 are orthogonally arranged.

[0061] Thereby, the isolation degree between two adjacent radiation units 20 is further improved, and further the beam isolation degree of the communication antenna 100 provided in the present application is improved.

[0062] In some other embodiments provided in the present application, the included angle between the polarization direction of one of two adjacent radiation units 20 and the tangential direction of the arc array 201 is 45°, and the included angle between the polarization direction of the other of two adjacent radiation units 20 and the tangential direction of the arc array 201 is 315°.

[0063] As Figure 4 shown in (a) thereof, in some radiation units 20, the feeding network 24 is connected to one end in the Figure 4 x direction shown therein and one end in the y direction shown in the figure, and the feeding network 24 is connected to one end in the Figure 4 x direction shown therein and one end in the y direction shown in the figure of the second radiator 23; as Figure 4 shown in (b) thereof, in some other radiation units 20, the feeding network 24 is connected to the other end in the Figure 4 x direction shown therein and the other end in the y direction shown in the figure, and the feeding network 24 is connected to the other end in the Figure 4 x direction shown therein and the other end in the y direction shown in the figure of the second radiator 23, Figure 4 the x direction shown therein is orthogonal to the Figure 4 y direction shown therein.

[0064] When the radiation unit 20 is disposed in the arc array 201, Figure 4 the x direction shown in is the tangential direction of the arc array 201, Figure 4 the radiation unit 20 shown in (a) in and Figure 4 the radiation unit 20 shown in (b) in are alternately arranged along the circumferential direction of the arc array 201, so that the polarization directions of any two adjacent radiation units 20 are arranged orthogonally.

[0065] Thereby, the isolation degree between two adjacent radiation units 20 is further improved, and then the beam isolation degree of the communication antenna 100 provided by the present application is improved.

[0066] In some embodiments provided by the present application, the operating frequency bands of the plurality of radiation units 20 are all within the operating frequency band of the communication antenna 100, and there is an interval frequency band between the operating frequency bands of two adjacent radiation units 20 with adjacent operating frequency bands.

[0067] The operating frequency band of the radiation unit 20 refers to the frequency range in which the radiation unit 20 can work normally and effectively radiate electromagnetic waves. The operating frequency bands of the plurality of radiation units 20 are all different, and the operating frequency bands of the plurality of radiation units 20 are all within the operating frequency band of the antenna array provided by the embodiments of the present application. On the one hand, communication within the operating frequency band of the antenna array is realized through the plurality of radiation units 20, and the channel capacity and the number of devices that can be carried by the antenna array are improved. On the other hand, the isolation degree between the plurality of radiation units 20 is improved by means of frequency band isolation.

[0068] Any two adjacent radiation units 20 have different operating frequency bands, and there is an interval frequency band between the operating frequency bands of two adjacent radiation units 20 to improve the frequency band isolation effect between two adjacent radiation units 20, and further improve the beam isolation degree of the communication antenna 100 provided by the present application.

[0069] In some embodiments provided by the present application, there is an interval frequency band between the operating frequency bands of any two radiation units 20.

[0070] Among the plurality of radiation units 20, there is a radiation unit 20 whose maximum frequency of the operating frequency band is less than the minimum frequency of the operating frequency band of another radiation unit 20, and no other radiation unit 20 works between the above-mentioned maximum frequency and minimum frequency.

[0071] Thereby, there are a plurality of interval frequency bands in the operating frequency band of the communication antenna 100 provided by the present application, and the plurality of radiation units 20 do not work in any interval frequency band. Frequency band isolation is formed between the plurality of radiation units 20 by setting a plurality of interval frequency bands, the isolation degree between any two radiation units 20 is improved, and then the beam isolation degree of the communication antenna 100 provided by the present application is improved.

[0072] In some embodiments provided by the present application, such as Figure 1 shown, a plurality of radiation units 20 include a first unit 001, a second unit 002, and a third unit 003. The second unit 002 is disposed between the first unit 001 and the third unit 003. The first unit 001 operates within a first frequency band, the second unit 002 operates within a second frequency band, and the third unit 003 operates within a third frequency band;

[0073] wherein both the first frequency band and the third frequency band are greater than the second frequency band, or both the first frequency band and the third frequency band are less than the second frequency band.

[0074] Thus, in the arrangement direction of the first unit 001, the second unit 002, and the third unit 003, the operating frequency bands of the plurality of radiation units 20 do not continuously and monotonically increase or decrease, thereby increasing the spacing between two adjacent radiation units 20 in the circumferential direction of the arc array 201.

[0075] With such a setting, in the communication antenna 100 provided by the embodiments of the present application, two adjacent radiation units 20 in the operating frequency bands have a relatively large spacing in the circumferential direction of the arc array 201, thereby reducing the beam interference between two adjacent radiation units 20 in the operating frequency bands, and further improving the isolation degree between the plurality of radiation units 20.

[0076] Such as Figure 1 and Figure 2 shown, in some embodiments provided by the present application, the communication antenna 100 includes a total of six radiation units 20, and the six radiation units 20 are arranged along the circumferential direction of the arc array 201.

[0077] The plurality of radiation units 20 arranged along the circumferential direction of the arc array 201 respectively operate within the frequency bands of 5.25 GHz - 5.27 GHz, 5.735 GHz - 5.755 GHz, 5.21 GHz - 5.23 GHz, and 5.29 GHz - 5.31 GHz.

[0078] The first unit 001 operates within the frequency band of 5.25 GHz - 5.27 GHz, the third unit 003 operates within the frequency band of 5.29 GHz - 5.31 GHz. The operating frequency band of the first unit 001 is adjacent to the operating frequency band of the third unit 003. There are also two other second units 002 disposed between the first unit 001 and the third unit 003. One of the second units 002 operates within the frequency band of 5.735 GHz - 5.755 GHz, and the other second unit 002 operates within the frequency band of 5.21 GHz - 5.23 GHz.

[0079] Such as Figure 1As shown in the figure, two second units 002 are provided between the first unit 001 and the third unit 003 with adjacent operating frequency bands. The operating frequency band of one of the second units 002 is greater than the first frequency band and greater than the third frequency band, and the operating frequency band of the other second unit 002 is less than the first frequency band and less than the third frequency band. Thus, there is a large gap between the operating frequency bands of any two adjacent radiation units 20, further improving the isolation degree between multiple radiation units 20.

[0080] The communication device provided by the embodiment of the present application includes the communication antenna 100 in any of the above embodiments.

[0081] The communication device provided by the present application can be a ceiling antenna or other AP (Access Point, i.e., wireless access point) communication device. The communication antenna 100 provided by the embodiment of the present application has the advantages of a large beam coverage area and a high beam isolation degree. Thus, the communication device provided by the present application has the advantages of a large beam coverage range and high communication quality, enabling the communication device provided by the embodiment of the present application to be applicable to large-area multi-user scenarios such as large stadiums, conference centers, airport waiting halls, and large offices.

[0082] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A communication antenna, characterized in that: include: seat body; A plurality of radiation units are provided on the base and the main lobe directions of the radiation units are away from the base, there is an angle between the main lobe directions of any two of the radiation units, and the beam width of the radiation unit is less than or equal to the angle.

2. The communication antenna according to claim 1, characterized in that: The radiation unit comprises a first radiator, a feeding network and a plurality of second radiators, wherein the first radiator and the second radiator are both connected to the feeding network, and the first radiator is arranged between any two of the second radiators; The amplitude of the electrical signal input by the feeding network to the first radiator is greater than the amplitude of the electrical signal input by the feeding network to the second radiator.

3. The communication antenna according to claim 1, characterized in that: The plurality of radiation units are arranged along an arc array, and the main lobe direction of the radiation unit extends along the radial direction of the arc array; The angle between the polarization direction of one of the two adjacent radiation units and the tangent direction of the arc array is different from the angle between the polarization direction of the other of the two adjacent radiation units and the tangent direction of the arc array.

4. The communication antenna according to claim 3, characterized in that: The polarization direction of one of the two adjacent radiation units is the tangent direction of the arc array, and the polarization direction of the other of the two adjacent radiation units is orthogonal to the tangent direction of the arc array.

5. The communication antenna according to claim 3, characterized in that: The angle between the polarization direction of one of the two adjacent radiation units and the tangent direction of the arc array is 45°, and the angle between the polarization direction of the other of the two adjacent radiation units and the tangent direction of the arc array is 315°.

6. The communication antenna according to any one of claims 1 to 5, characterized in that: The working frequency bands of the plurality of radiation units are all within the working frequency band of the communication antenna, and there is an interval frequency band between the working frequency bands of two radiation units with adjacent working frequency bands.

7. The communication antenna according to claim 6, characterized in that: There is an interval frequency band between the working frequency bands of any two of the radiation units.

8. The communication antenna according to claim 6, characterized in that: The plurality of radiation units include a first unit, a third unit and at least one second unit, the second unit is arranged between the first unit and the third unit, the first unit operates within a first frequency band, the second unit operates within a second frequency band, and the third unit operates within a third frequency band; The first frequency band and the third frequency band are both larger than the second frequency band, or the first frequency band and the third frequency band are both smaller than the second frequency band.

9. The communication antenna according to claim 8, characterized in that: There are multiple second units, one of which has an operating frequency greater than the first frequency band and the third frequency band, and another of which has an operating frequency less than the first frequency band and the third frequency band.

10. A communication device, characterized in that: Comprising the communication antenna according to any one of claims 1-9.

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