Antenna radiation structure, antenna and communication equipment

Abstract

The embodiment of the invention provides an antenna radiation structure, an antenna and communication equipment, and relates to the technical field of communication. Comprising a metal floor, and a magnetoelectric dipole and a magnetic conduction integrated plane which are arranged on the metal floor; the magnetoelectric dipole comprises four magnetoelectric structure subunits, the four magnetoelectric structure subunits are symmetrically distributed in the center of the metal floor, and magnetic dipole patches of the four magnetoelectric structure subunits form an X-shaped cavity; the magnetic conduction integrated plane comprises a plurality of magnetic conduction integrated units, each magnetic conduction integrated unit comprises a metal column connected with the metal floor and a metal patch arranged on the metal column, and the height of the magnetic conduction integrated units is smaller than that of the magnetoelectric structure subunits. By adopting the technical mode, the magnetic conduction integrated surface is adopted to change the resonant frequency of the electromagnetic dipole antenna, the matching at a low-frequency position is realized, the antenna gain is further improved, the profile height of the antenna is reduced, the antenna size is reduced, and the miniaturization design of the antenna is realized.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an antenna radiation structure, an antenna, and a communication device. Background Art

[0002] In the field of communication technology, the magnetic electric dipole antenna is a basic antenna form. The electric dipole antenna has a radiation pattern of ∞ on its E plane and an O on its H plane. The radiation pattern of the magnetic dipole on the E plane and the H plane is exactly opposite to that of the electric dipole. Therefore, the radiation pattern of the electromagnetic dipole antenna on both its E plane and H plane is a heart-shaped pattern, which has higher directivity. The magnetic electric dipole antenna has the characteristics of high gain.

[0003] However, with the evolution and development of 5G technology, the frequency range covered by the wireless frequency of communication equipment is getting wider and wider. In order to achieve impedance matching within the frequency band, the traditional magnetoelectric dipole antenna needs to increase the antenna profile height, which greatly increases the size of the antenna and is not conducive to the miniaturization design of the antenna. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide an antenna radiation structure, an antenna and a communication device.

[0005] To solve the above technical problems, the embodiments of the present application are implemented through the following aspects.

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided an antenna radiation structure, comprising a metal floor and a magneto-electric dipole and a magnetic guide integrated plane arranged on the metal floor;

[0007] The magneto-electric dipole comprises four magneto-electric structural subunits, each of which comprises two magnetic dipole patches perpendicular to the metal floor and one electric dipole patch parallel to the metal floor, the four magneto-electric structural subunits are symmetrically distributed at the center of the metal floor, and the magnetic dipole patches of the four magneto-electric structural subunits form an X-shaped cavity;

[0008] The magnetic guide integrated plane includes a plurality of magnetic guide integrated units, each of which includes a metal column connected to the metal floor and a metal patch arranged on the metal column, and the height of the magnetic guide integrated unit is less than the height of the magneto-electric structure subunit.

[0009] According to a second aspect of an embodiment of the present disclosure, an antenna is provided, comprising a shell, any one of the antenna radiation structures described in the first aspect above and two cross-shaped feeding structures arranged in the shell, wherein the feeding structure is arranged in an X-shaped cavity of the antenna radiation structure, and an end of the feeding structure close to the metal floor is connected to a radio frequency connector for connecting to a radio frequency line through a through hole on the metal floor adapted to the radio frequency connector.

[0010] According to a third aspect of an embodiment of the present disclosure, a communication device is provided, comprising any differential feeding structure described in the first aspect or any antenna described in the second aspect.

[0011] The technical solution provided by the embodiment of the present disclosure provides an antenna radiation structure, including a metal floor and a magneto-electric dipole and a magnetic guide integrated plane arranged on the metal floor; the magneto-electric dipole includes four magneto-electric structural subunits, each of which includes two magnetic dipole patches perpendicular to the metal floor and one electric dipole patch parallel to the metal floor, the four magneto-electric structural subunits are symmetrically distributed at the center of the metal floor, and the magnetic dipole patches of the four magneto-electric structural subunits form an X-shaped cavity; the magnetic guide integrated plane includes a plurality of magnetic guide integrated units, each of which includes a metal column connected to the metal floor and a metal patch arranged on the metal column, and the height of the magnetic guide integrated unit is less than the height of the magneto-electric structural subunit. By adopting the above technical method, the magnetic guide integrated surface is used to change the resonant frequency of the electromagnetic dipole antenna, so as to achieve the matching of the antenna at the low frequency, and on the basis of the high gain of the magneto-electric dipole antenna, the cross-sectional height of the antenna is reduced, the overall size of the antenna is reduced, the antenna gain is improved, and the miniaturization design of the antenna is achieved.

[0012] 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 present disclosure.

[0013] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 An exploded diagram of an antenna radiation structure provided by an embodiment of the present application is shown;

[0016] Figure 2 A working principle diagram of a magnetic guide integrated plane provided in an embodiment of the present application is shown;

[0017] Figure 3 A working principle diagram of a magnetic guide integrated unit provided in an embodiment of the present application is shown;

[0018] Figure 4 An exploded view of a magneto-electric structure subunit provided in an embodiment of the present application is shown;

[0019] Figure 5 A top view of an antenna radiation structure provided by an embodiment of the present application is shown;

[0020] Figure 6 A top view of an antenna provided in an embodiment of the present application is shown;

[0021] Figure 7 A schematic diagram showing a feeding structure of an antenna provided in an embodiment of the present application;

[0022] Figure 8 A gain comparison diagram of the antenna radiation structure provided in the embodiment of the present application and a conventional antenna radiation structure is shown. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0024] Figure 1 An exploded diagram of an antenna radiation structure provided in an embodiment of the present application is shown, Figure 1 As shown, the antenna radiation structure includes a metal floor 1 and a magneto-electric dipole 3 and a magnetic guide integrated plane 2 arranged on the metal floor 1 .

[0025] Among them, the magneto-electric dipole 3 includes four magneto-electric structural subunits, each magneto-electric structural subunit includes two magnetic dipole patches 31 perpendicular to the metal floor 1 and an electric dipole patch 32 parallel to the metal floor 1, and the four magneto-electric structural subunits are symmetrically distributed at the center of the metal floor 1. The magnetic dipole patches 31 of the four magneto-electric structural subunits form an X-shaped cavity. By adopting the above-mentioned structural design, a cross-shaped feeding structure can be set in the X-cavity, thereby realizing cross-polarization of the radio frequency signal (i.e., ±45° polarization) and improving the gain of the antenna.

[0026] The magnetic guide integrated plane 2 includes multiple magnetic guide integrated units, each of which includes a metal column 22 connected to the metal floor 1 and a metal patch 21 arranged on the metal column 22. The height of the magnetic guide integrated unit is less than the height of the magneto-electric structure subunit. The magnetic guide integrated plane using the above-mentioned structural design can achieve bandwidth matching even when the antenna profile is reduced through the principle of AMC (Artificial Magnetic Conductors).

[0027] Artificial magnetic conductor (AMC) is an electromagnetic metasurface with high surface impedance and can reflect the incident wave in phase. Figure 2 The working principle diagram of a magnetic guide integrated plane provided in an embodiment of the present application is shown as follows: Figure 2 As shown in (a), traditional radiating antennas usually use PEC (Perfect Electric Conductor) as reflectors. According to the boundary conditions of PEC, the surface tangential electric field is zero, so the electric field of the reflected wave and the electric field of the incident wave need to cancel each other on its surface to make the tangential electric field zero. At this time, the electric field of the reflected wave is opposite to the electric field of the incident wave, that is, the phase difference is 180°. However, the surface tangential magnetic field of PMC (Perfect Magnetic Conductor) is zero. The surface tangential magnetic field of the reflected wave is opposite to that of the incident wave, and the propagation direction is opposite. Therefore, according to the right-hand rule of electric field, magnetic field and propagation direction, it can be known that the electric field of the reflected wave is in the same direction as the incident wave, that is, the phase difference is 0°. When PEC is used as a reflector, when the antenna is one-quarter wavelength (λ / 2) away from the reflector, the phase difference between the electromagnetic wave emitted by the antenna and the electromagnetic wave reflected from the floor at the antenna is 360°, and the reflected wave and the incident wave are superimposed in phase, which maximizes the gain improvement. As shown Figure 2 As shown in (b), AMC is actually an ideal magnetic conductor. The phase difference between the electromagnetic wave emitted by the antenna and the electromagnetic wave reflected from the floor is 0°, which is the same as the situation corresponding to the phase difference of 360°. In an ideal case, the reflector is AMC and the profile height is 0. In this case, the phase difference is 0°, and the reflected wave and the incident wave are superimposed in phase, which maximizes the gain improvement. Although the reflection phase varies with frequency in actual design and the profile height will not be infinitely small, the reflected wave and the incident wave can be superimposed in phase when the profile is less than a quarter wavelength (for example, λ / 4), thereby improving the performance of the antenna. Therefore, the use of AMC can make the waves at the antenna aperture superimposed in the same direction when the profile is less than a quarter wavelength, thereby effectively reducing the profile height.

[0028] By adopting the above technical method, the resonant frequency of the electromagnetic dipole antenna is changed by using an integrated magnetic guide surface, so as to achieve matching at low frequency. On the basis of the high gain of the magnetic electric dipole, the cross-sectional height of the antenna is reduced, the overall size of the antenna is reduced, and the miniaturization design of the antenna is realized.

[0029] Multiple magnetic guide integrated units on the magnetic guide integrated plane can form an EBG (Electromagnetic BandGap, electromagnetic bandgap structure). EBG is a special periodic metasurface structure that produces bandgap characteristics by forming periodically arranged magnetic guide integrated units. The EBG structure is usually composed of periodically arranged metal patches and a dielectric substrate. When electromagnetic waves propagate, the metal patches can be regarded as a series of equivalent capacitors and inductors. These equivalent elements work together to form an electromagnetic bandgap structure within a specific frequency range, thereby suppressing the propagation of electromagnetic waves within this frequency range. Furthermore, adjacent magnetic guide integrated units can form an LC parallel resonant circuit, Figure 3 The working principle diagram of a magnetic guide integrated unit provided in an embodiment of the present application is shown as follows: Figure 3 As shown in (a), the metal pillars 22 and metal patches 21 in the adjacent magnetic guide integrated units and the metal floor 1 form an LC parallel resonant circuit, see Figure 3 (b) shows the schematic diagram of the LC parallel resonant circuit. The LC parallel resonant circuit composed of adjacent magnetic guide integrated units can suppress the edge current, thereby further improving the antenna gain.

[0030] By adopting the above technical method, the resonant frequency of the electromagnetic dipole antenna is changed by using an integrated magnetic guide surface, so as to achieve matching at low frequency. On the basis of the high gain of the magnetic electric dipole, the cross-sectional height of the antenna is reduced, the overall size of the antenna is reduced, the antenna gain is improved, and the miniaturization design of the antenna is realized.

[0031] Figure 4 An exploded diagram of a magnetoelectric structure subunit provided in an embodiment of the present application is shown, Figure 4 As shown, for each magneto-electric structural subunit, two magnetic dipole patches 31 are respectively connected to the metal floor 1 through a first edge 311 and are vertically connected to each other through a second edge 312 adjacent to the first edge 311, and two adjacent edges 321 of the electric dipole patch are respectively connected to the third edges 313 of the two magnetic dipole patches 31, and the third edge 313 is the opposite edge of the first edge 311. By adopting the above-mentioned structural design, multiple magneto-electric dipoles can form an X-shaped cavity, and realize cross-polarization (i.e., ±45° polarization) of the RF signal with the feeding structure arranged in the X-shaped cavity.

[0032] In some embodiments, a first opening structure 323 may be provided along a fourth side 322 of the electric dipole patch 32 based on impedance matching of the antenna, thereby further improving antenna gain, wherein the fourth side 322 is two sides other than two adjacent sides 321 of the electric dipole patch.

[0033] Those skilled in the art will appreciate that the first opening structure may have various shapes, such as a rectangular opening structure, or a triangle, a semicircle, a pentagon, etc. The shape, size, and position of the opening may be obtained through optimization simulation.

[0034] Figure 5 A top view of an antenna radiation structure provided in an embodiment of the present application is shown. Figure 5 As shown, the magnetic dipole patches of the four magnetoelectric structural subunits form an X-shaped cavity 4, and the angle between each first side and any side of the metal floor is 45°, so that the feeding structure and magnetoelectric dipole arranged in the X-shaped cavity can achieve cross-polarization of the radio frequency signal (i.e., ±45° polarization), thereby improving the gain of the antenna. Multiple magnetic guide integrated units are distributed in a square shape along the edge of the metal floor 1 at a first distance, and the distance from the edge of the metal floor is a preset second distance.

[0035] The metal floor 1 is a square, and the sides of the metal patch 21 are parallel to the two opposite sides of the metal floor 1 and perpendicular to the other two opposite sides of the metal floor 1. The center of the metal column 22 coincides with the center of the metal patch 21, and each vertex of the metal patch 21 is provided with a second opening structure 211 toward the center of the metal patch 21. Figure 3 Based on the equivalent circuit of , additional equivalent inductor L and capacitor C are introduced to realize the integrated design of AMC and EBG, thereby achieving both the suppression of the edge current of the antenna unit and the optimization of the impedance matching with a low profile.

[0036] Those skilled in the art will understand that the specific dimensions of the magneto-electric structure subunits, the dimensions and position of the first opening structure 323, the diameter of the metal column 22 in each magnetic conductivity integrated unit, the side length and thickness of the metal patch 21, the dimensions of the second opening structure 211, and the number and distribution of magnetic conductivity integrated units in the magnetic conductivity integrated plane can all be obtained through simulation optimization, and this is not limited in the present application.

[0037] In some possible implementations, the antenna radiation structure may be applied to a 3.3 GHz-5 GHz CPE antenna, and the recommended values ​​of various parts of the antenna radiation structure may be determined based on the data shown in Table 1.

[0038] Table 1

[0039]

[0040] Those skilled in the art can understand that the above Table 1 is an example of the antenna radiation structure given in the embodiments of the present application. Those skilled in the art can also adjust one or more items in the above Table 1 based on simulation optimization. For example, the lengths of two adjacent sides 321 of the electric dipole patch can also be less than the length of the first side 311 of the magnetic dipole patch. The present application does not limit this.

[0041] The electromagnetic bandgap structure implemented in the present application realizes both EBG and AMC designs. Through structural design and size optimization, this structure can have both high-impedance characteristics and in-phase reflection characteristics within the same antenna operating frequency band, and perform distributed loading on the magnetic-conducting integrated plane, and optimize the design of the magnetic-conducting integrated unit. Thus, by the AMC principle, broadband matching is achieved when the antenna profile is reduced, and at the same time, by the EBG principle, the edge current of the ground plane is suppressed, and the antenna gain is improved. By adopting the above technical means, the magnetic-conducting integrated surface is used to change the resonant frequency of the electromagnetic dipole antenna, realizing matching at low frequencies. On the basis of the high gain of the magnetoelectric dipole, the profile height of the antenna is reduced, the overall size of the antenna is reduced, the antenna gain is improved, and the miniaturized design of the antenna is realized.

[0042] Figure 6 The top view of an antenna provided by an embodiment of the present application is shown, as Figure 6 shown, including a housing (not shown in the figure), the antenna radiation structure of any of the above embodiments disposed in the housing, and two cross-shaped feeding structures 5. The feeding structure 5 is disposed in the X-shaped cavity of the antenna radiation structure. By adopting the above structural design, cross-polarization (i.e., ±45° polarization) of the radio frequency signal can be realized, and the gain of the antenna can be improved. Figure 7 The schematic diagram of a feeding structure of an antenna provided by an embodiment of the present application is shown, as Figure 7 shown, the feeding structure 5 includes a first feeding structure 51 and a second feeding structure 52. One end of the feeding structure 5 close to the metal ground plane 1 is connected to a radio frequency connector, and is connected to a radio frequency line through a through hole adapted to the radio frequency connector on the metal ground plane 1. Exemplarily, one end of the feeding structure 51 close to the metal ground plane 1 is connected to a radio frequency connector 511. In some possible implementation manners, the radio frequency interface can be an SMA head. In some embodiments, the feeding structure 5 is connected to the inner core of the radio frequency connector, and the metal ground plane 1 in the antenna radiation structure is connected to the outer skin of the radio frequency connector.

[0043] In some embodiments, one end of the feeding structure away from the metal ground plane is a rectangular metal sheet bent into an L shape, and the heights of the first feeding structure 51 and the second feeding structure 52 are different, as Figure 7As shown, taking the first feeding structure 51 as an example, the rectangular metal sheet bent into a shape includes a first metal sheet 512, a second metal sheet 513 and a third metal sheet 514. The first metal sheet 512 is connected to the RF connector 511, and the second metal sheet 513 is respectively connected to the third metal sheet 514 and the other end of the RF connector 511 connected to the first metal sheet 512. The structure of the second feeding structure 52 is similar to that of the first feeding structure 51, and will not be repeated here.

[0044] In some possible implementations, the feeding structure may be applied to 3.3 GHz-5 GHz CPE antennas, and the recommended values ​​of various parts of the feeding structure may be determined based on the data shown in Table 2.

[0045] Table 2

[0046]

[0047] Those skilled in the art may understand that the above Table 2 is an example of the antenna radiation structure provided in the embodiment of the present application, and those skilled in the art may also adjust one or more items in the above Table 2 based on simulation optimization.

[0048] It should be noted that the antenna radiation structure shown in the above embodiment can be used in a single-polarization or dual-polarization scenario. For example, when the antenna radiation structure is used for single polarization, a feeding structure can be set in any cavity in the X cavity. At this time, four magnetic dipole patches and four electric dipole patches parallel to the feeding structure constitute the antenna radiation structure (and the other four magnetic dipole patches are not used in the single-polarization scenario). When the antenna radiation structure is used for dual polarization, two feeding structures are orthogonally arranged in the X-shaped cavity, and the two feeding structures are used for +45° polarization and -45° polarization, respectively. For example, the first A feeding structure 51 is used for +45° polarization, then the two electric dipole patches arranged on one side of the first feeding structure 51 and the two magnetic dipole patches on the same side and parallel to the first feeding structure 51 form a group, and form a pair with the group on the other side to achieve +45° polarization of the antenna transmitting signal. The second feeding structure 52 is used for -45° polarization, then the two electric dipole patches arranged on one side of the second feeding structure 52 and the two magnetic dipole patches on the same side and parallel to the second feeding structure 52 form a group, and form a pair with the group on the other side to achieve -45° polarization of the antenna transmitting signal.

[0049] By adopting the above technical method, the resonant frequency of the electromagnetic dipole antenna is changed by using an integrated magnetic guide surface, so as to achieve matching at low frequency. On the basis of the high gain of the magnetic electric dipole, the cross-sectional height of the antenna is reduced, the overall size of the antenna is reduced, the antenna gain is improved, and the miniaturization design of the antenna is realized.

[0050] In some embodiments, a communication device is provided, including the antenna radiation network in any of the above embodiments or the antenna in any of the above embodiments. The communication device provided in the embodiments of the present invention uses an integrated magnetic guide surface to change the resonant frequency of the electromagnetic dipole antenna, achieves matching at low frequencies, reduces the cross-sectional height of the antenna on the basis of the high gain of the magnetic electric dipole, reduces the overall size of the antenna, improves the antenna gain, and achieves a miniaturized design of the antenna.

[0051] Figure 8 A gain comparison diagram of the antenna radiation structure provided in the embodiment of the present application and the conventional antenna radiation structure is shown as follows: Figure 8 As shown, the antenna radiation structure provided by the embodiment of the present application has a significant gain improvement in each antenna frequency band, especially in the low frequency band, compared with the conventional antenna radiation structure. Taking the 3.5G-5G terminal antenna as an example, the antenna design is carried out with VSWR (Voltage Standing Wave Ratio) <2 as the standard. The antenna radiation structure provided by the embodiment of the present application reduces the height by 3.8mm, and the length and width are reduced by 3mm respectively, compared with the conventional magnetoelectric dipole antenna, which reduces the overall size of the antenna and realizes the miniaturization design of the antenna.

[0052] In the several embodiments provided in the present application, it should be understood that the disclosed systems and devices can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or it can be an electrical, mechanical or other form of connection.

[0053] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present invention.

[0054] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0055] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An antenna radiation structure, characterized in that: It includes a metal floor and a magnetic dipole and magnetic guide integrated plane arranged on the metal floor; The magneto-electric dipole comprises four magneto-electric structural subunits, each of which comprises two magnetic dipole patches perpendicular to the metal floor and one electric dipole patch parallel to the metal floor, the four magneto-electric structural subunits are symmetrically distributed at the center of the metal floor, and the magnetic dipole patches of the four magneto-electric structural subunits form an X-shaped cavity; The magnetic guide integrated plane includes a plurality of magnetic guide integrated units, each of which includes a metal column connected to the metal floor and a metal patch arranged on the metal column, and the height of the magnetic guide integrated unit is less than the height of the magneto-electric structure subunit.

2. The structure according to claim 1, characterized in that: For each of the magneto-electric structural subunits, the two magnetic dipole patches are connected to the metal floor through a first edge and are vertically connected to each other through a second edge adjacent to the first edge, and the two adjacent edges of the electric dipole patch are respectively connected to the third edges of the two magnetic dipole patches, and the third edge is the opposite edge of the first edge, and the angle between each of the first edges and any edge of the metal floor is 45°.

3. The structure according to claim 2, characterized in that: A first opening structure is arranged along a fourth side of the electric dipole patch, and the fourth side is two sides other than the two adjacent sides of the electric dipole patch.

4. The structure according to claim 1, characterized in that The plurality of magnetic guide integrated units are distributed in a square shape at a first distance along the edge of the metal floor, and the distance from the edge of the metal floor is a preset second distance.

5. The structure according to claim 1, characterized in that: The metal floor is square, and the sides of the metal patch are parallel to two opposite sides of the metal floor and perpendicular to the other two opposite sides of the metal floor.

6. The structure according to any one of claims 1 to 5, characterized in that: The center of the metal column coincides with the center of the metal patch, and a second opening structure is provided at the vertex of the metal patch toward the center of the metal patch.

7. An antenna, characterized in that: It comprises a shell, an antenna radiating structure as described in any one of claims 1 to 6 arranged in the shell, and two cross-shaped feeding structures, wherein the feeding structure is arranged in an X-shaped cavity of the antenna radiating structure, and the feeding structure is connected to a radio frequency connector at one end close to the metal floor for connecting to a radio frequency line through a through hole on the metal floor adapted to the radio frequency connector.

8. The antenna according to claim 7, characterized in that: The feeding structure is connected to the inner core of the radio frequency connector, and the metal floor of the antenna radiation structure is connected to the outer skin of the radio frequency connector.

9. The antenna according to claim 7 or 8, characterized in that: One end of the feeding structure away from the metal floor is a rectangular metal sheet bent into a shape of a triangle, and the heights of the two feeding structures are different.

10. A communication device, characterized in that: The invention comprises the antenna radiation structure according to any one of claims 1 to 6 or the antenna according to any one of claims 7 to 9.

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