Broadband self-decoupling magnetoelectric dipole antenna array and device based on magnetoelectric coupling cooperative regulation and control

Abstract

The invention discloses a broadband self-decoupling magnetoelectric dipole antenna array and device based on magnetoelectric coupling cooperative regulation and control, and relates to the technical field of mobile communication and radar detection. The antenna array is composed of a broadband wide-beam magnetoelectric dipole unit with an improved self-decoupling structure based on magnetoelectric coupling cooperative regulation and control, and comprises an L-shaped electric dipole which forms a vertical current at a vertical part so as to expand the E-plane beam width; the magnetic dipole is composed of a metal patch with an inclined upper edge so as to reduce the H-plane beam width. The broadband self-decoupling antenna array based on magnetoelectric coupling cooperative regulation and control comprises a magnetoelectric dipole antenna unit and a broadband self-decoupling antenna unit, the adjacent dipole arms are printed on the two sides of the dielectric substrate in an overlapped mode in the X direction so as to introduce magnetic coupling. The connecting through holes in the short substrate are connected with the overlapped dipole arms to enhance magnetic coupling; vertical portion edges of the L-shaped dipole arms are embedded in planar feed lines of the electric dipoles of adjacent cells to introduce electrical coupling. The invention provides a self-decoupling antenna based on magnetoelectric coupling coordinated regulation and control, which has a wide working frequency band and does not need an additional decoupling structure.

Description

Technical Field

[0001] The present invention relates to the technical fields of mobile communication and radar detection, and particularly to a broadband self-decoupling magnetoelectric dipole antenna array and device based on collaborative regulation of magnetoelectric coupling. Background Art

[0002] In a radio frequency front-end system, an antenna array realizes beam scanning through phase control to cover a larger space under high-gain conditions. However, the electromagnetic coupling between antenna elements in the antenna array reduces the radiation efficiency of the antenna, causes pattern distortion, and generates beam scanning blind spots, etc., thereby affecting the performance and stability of the entire communication system. It is a huge challenge to achieve a high inter-element isolation degree for the antenna array in a relatively wide operating frequency range.

[0003] The magnetoelectric dipole antenna has good broadband characteristics, and it has great value to achieve broadband co-frequency decoupling for the magnetoelectric dipole. For example, an existing literature proposed a decoupling method of adding a stub at the dipole end of the magnetoelectric dipole. This method realizes an inter-element isolation degree exceeding 22 dB within a working bandwidth of 25.1 - 33.3 GHz (28.1%). Traditional methods such as adding neutralization lines and decoupling surfaces are not conducive to the miniaturization design of the radio frequency front-end system, increase the complexity of the antenna array, and gradually show limitations. Therefore, it is particularly important to study self-decoupling technology. The self-decoupling technology enhances the inter-element isolation degree in the antenna array by using the characteristics of the antenna itself, without additional decoupling structures, reducing the structural complexity. Summary of the Invention

[0004] To solve at least one of the technical problems existing in the prior art to a certain extent, an object of the present invention is to provide a broadband self-decoupling magnetoelectric dipole antenna array and a communication device based on collaborative regulation of magnetoelectric coupling.

[0005] The first technical solution adopted by the present invention is:

[0006] A broadband self-decoupling magnetoelectric dipole two-element antenna array based on collaborative regulation of magnetoelectric coupling, characterized in that it includes two magnetoelectric dipole units improved based on a self-decoupling structure;

[0007] The electric dipole arm of the magnetoelectric dipole unit is L-shaped, including transverse and longitudinal parts with different widths;

[0008] The magnetic dipole of the magnetoelectric dipole unit is composed of metal patches with gradually changing widths;

[0009] The transverse parts of the electric dipole arms of the two magnetoelectric dipole units overlap in the X direction, introducing magnetic coupling between the units;

[0010] The inner edges of the longitudinal portions of the overlapping electric dipole arms are connected by metal vias integrated on the dielectric substrate to enhance magnetic coupling;

[0011] The longitudinal portions of the electric dipole arms introduce electrical coupling with the planar feed lines of adjacent units through an embedded structure;

[0012] By simultaneously introducing magnetic coupling and electrical coupling, the inherent coupling is partially canceled within a wide frequency band to achieve the self - decoupling function.

[0013] Furthermore, the magnetoelectric dipole unit is composed of a first, a second, a third dielectric substrate and a reflector;

[0014] The first dielectric substrate and the second dielectric substrate are placed in parallel, perpendicular to the third dielectric substrate and assembled at the upper end of the third dielectric substrate.

[0015] Furthermore, the magnetoelectric dipole unit has two pairs of electric dipoles, which are respectively located on the first dielectric substrate and the second dielectric substrate, and the dipole arms of the electric dipoles are respectively located on the first surface and the second surface of the corresponding dielectric substrate;

[0016] The dipole is fed by a planar microstrip line located on the third dielectric substrate.

[0017] Furthermore, the electric dipole is composed of L - shaped dipole arms with different - width transverse and longitudinal dipole arms; the two dipole arms of the electric dipole are respectively located on the first surface and the second surface of the corresponding dielectric substrate, and can expand the E - plane beamwidth of the dipole.

[0018] Furthermore, the third dielectric substrate is provided with a coaxial - substrate integrated waveguide conversion structure, a substrate integrated waveguide - planar feed line conversion structure, two pairs of metal patches with gradually changing widths and two pairs of planar feed lines;

[0019] The substrate integrated waveguide is converted into two pairs of planar feed lines by two pairs of metal patches with gradually changing widths. Each pair of metal patches with gradually changing widths is respectively located on the two surfaces of the third dielectric substrate, and each pair of planar feed lines is respectively located on the two surfaces of the third dielectric substrate.

[0020] Furthermore, the magnetoelectric dipole unit has two pairs of magnetic dipoles, which are composed of two pairs of metal patches with gradually changing widths and are excited by the open - circuit end of the substrate integrated waveguide;

[0021] The metal patches with gradually changing widths can also be regarded as metal patches with inclined upper edges, which can narrow the beamwidth of the antenna in the H - plane and enhance the antenna gain.

[0022] Furthermore, the magnetoelectric dipole dual - unit antenna array is composed of a first magnetoelectric dipole unit and a second magnetoelectric dipole unit arranged in the Y - direction;

[0023] The adjacent dipole arms of the first magnetoelectric dipole unit and the second magnetoelectric dipole unit are designed to be exactly located on the first surface and the second surface of the corresponding dielectric substrate respectively, that is, the two dipole arms overlap in the X direction.

[0024] Furthermore, the embedding structure is that the longitudinal edge of the dipole arm of the first magnetoelectric dipole unit adjacent to the second magnetoelectric dipole unit is embedded into the rectangular slot etched on the planar feeder line of the second magnetoelectric dipole unit;

[0025] The dipole arm of the second magnetoelectric dipole unit is embedded into the planar feeder line of the first magnetoelectric dipole unit in the same way.

[0026] The second technical solution adopted by the present invention is:

[0027] A broadband self-decoupling magnetoelectric dipole multi-unit antenna array based on magnetoelectric coupling co-regulation, comprising the magnetoelectric dipole unit as described above and a broadband self-decoupling structure for magnetoelectric coupling co-regulation.

[0028] The third technical solution adopted by the present invention is:

[0029] A communication device, comprising the antenna array as described above.

[0030] The present invention has the following beneficial effects:

[0031] (1) The radiation bandwidth of the magnetoelectric dipole antenna unit proposed by the present invention is greater than 40%, which can completely cover the X-band, 8 - 12 GHz.

[0032] (2) The far-field pattern of the magnetoelectric dipole antenna unit proposed by the present invention in the E-plane has a wide beam and high gain.

[0033] (3) The self-decoupling magnetoelectric dipole multi-unit antenna array based on magnetoelectric coupling co-regulation proposed by the present invention realizes the self-decoupling function in the broadband range of 8.8 - 11.8 GHz (29%).

[0034] (4) The antenna array proposed by the present invention realizes a high isolation degree with an average greater than 20 dB between the antenna array units.

[0035] (5) The antenna array proposed by the present invention does not add an extra decoupling structure, and the antenna structure is simple, which is beneficial to miniaturization.

[0036] (6) The antenna array proposed by the present invention can ensure the stability and independence of the antenna unit pattern. Description of the Drawings

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following introduces the accompanying drawings of the related technical solutions in the embodiments of the present invention or the prior art. It should be understood that the accompanying drawings in the following introduction are only for conveniently and clearly presenting some embodiments of the technical solutions of the present invention. For those skilled in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0038] Figure 1 It is a three-dimensional structure diagram of a broadband self-decoupling two-element antenna array based on magnetoelectric coupling collaborative regulation in Embodiment 1 of the present invention;

[0039] Figure 2 It is a three-dimensional structure diagram of the magnetoelectric dipole unit of the antenna array in Embodiment 1 of the present invention;

[0040] Figure 3 It is a schematic diagram on the first surface of the third dielectric substrate of the magnetoelectric dipole unit of the antenna array in Embodiment 1 of the present invention;

[0041] Figure 4 It is a schematic diagram on the second surface of the third dielectric substrate of the magnetoelectric dipole unit of the antenna array in Embodiment 1 of the present invention;

[0042] Figure 5 It is a schematic diagram on the first surface of the first dielectric substrate of the magnetoelectric dipole unit of the antenna array in Embodiment 1 of the present invention;

[0043] Figure 6 It is a schematic diagram on the second surface of the first dielectric substrate of the magnetoelectric dipole unit of the antenna array in Embodiment 1 of the present invention;

[0044] Figure 7 It is a simulation reflection coefficient curve graph and gain curve graph of the magnetoelectric dipole unit of the antenna array in Embodiment 1 of the present invention;

[0045] Figure 8 It is a simulation efficiency curve graph of the magnetoelectric dipole unit of the antenna array in Embodiment 1 of the present invention;

[0046] Figure 9 It is the simulation radiation pattern of the magnetoelectric dipole unit of the antenna array in Embodiment 1 of the present invention at 8, 10, and 12 GHz;

[0047] Figure 10 It is a comparison graph of the beam widths of the L-shaped electric dipole and the non-L-shaped electric dipole in the E-plane;

[0048] Figure 11 It is the H-plane beam widths of the metal patch forming the magnetic dipole with the upper edge inclined and the upper edge not inclined;

[0049] Figure 12Structural diagram introducing magnetic coupling and electrical coupling for the array in Embodiment 1;

[0050] Figure 13 Schematic diagram on the first surface of the third dielectric substrate of the first antenna unit in the antenna array of Embodiment 1 of the present invention;

[0051] Figure 14 Schematic diagram on the second surface of the third dielectric substrate of the first antenna unit in the antenna array of Embodiment 1 of the present invention;

[0052] Figure 15 Schematic diagram on the first surface of the first dielectric substrate of the antenna array of Embodiment 1 of the present invention;

[0053] Figure 16 Schematic diagram on the second surface of the first dielectric substrate of the antenna array of Embodiment 1 of the present invention;

[0054] Figure 17 Curve graph of reflection coefficient and coupling coefficient of the antenna array in Embodiment 1 of the present invention;

[0055] Figure 18 Comparison graph of coupling coefficient curves before and after decoupling of the antenna array in Embodiment 1 of the present invention;

[0056] Figure 19 Three - unit three - dimensional structural diagram of a broadband self - decoupling antenna array based on magnetoelectric coupling collaborative regulation in Embodiment 2 of the present invention;

[0057] Figure 20 Curve graph of reflection coefficient and coupling coefficient of a three - unit broadband self - decoupling antenna array based on magnetoelectric coupling collaborative regulation in Embodiment 2 of the present invention;

[0058] Figure 21 Comparison graph of coupling coefficient curves with and without connection vias of a three - unit broadband self - decoupling antenna array based on magnetoelectric coupling collaborative regulation in Embodiment 2 of the present invention;

[0059] Figure 22 Comparison graph of coupling coefficient curves with and without embedded structures of a three - unit broadband self - decoupling antenna array based on magnetoelectric coupling collaborative regulation in Embodiment 2 of the present invention;

[0060] Figure 23 Three - dimensional structural diagram of a broadband self - decoupling antenna array based on magnetoelectric coupling collaborative regulation in Embodiment 3 of the present invention;

[0061] Figure 24 Three - dimensional structural diagram of an eight - unit broadband self - decoupling antenna array based on magnetoelectric coupling collaborative regulation in Embodiment 4 of the present invention.

[0062] Reference numerals:

[0063] 1 - Third dielectric substrate, 10 - First ground plane, 11 - Second ground plane, 12 - First upper-edge inclined metal patch, 13 - Second upper-edge inclined metal patch, 14 - Third upper-edge inclined metal patch, 15 - Third upper-edge inclined metal patch, 16 - First planar feeder, 17 - Second planar feeder, 18 - Third planar feeder, 19 - Fourth planar feeder;

[0064] 21 - First reflecting surface, 22 - First reflecting surface;

[0065] 3 - First dielectric substrate, 30 - First L-shaped dipole arm, 31 - Second L-shaped dipole arm;

[0066] 4 - Second dielectric substrate, 40 - Third L-shaped dipole arm, 41 - Fourth L-shaped dipole arm;

[0067] 5 - Feeding metal via hole;

[0068] 6 - Substrate integrated waveguide, 60 - 630 - Substrate integrated waveguide metal via holes;

[0069] 7 - Matching via holes, 70 - First matching metal via hole, 71 - Second matching metal via hole, 72 - Third matching metal via hole, 73 - Fourth matching metal via hole, 74 - Fifth matching metal via hole;

[0070] 8 - Array first dielectric substrate, 80 - Connecting metal via hole, 81 - Array first L-shaped dipole arm, 82 - Array second L-shaped dipole arm, 83 - Array third L-shaped dipole arm, 84 - Array fourth L-shaped dipole arm;

[0071] 9 - Third dielectric substrate of the array first antenna element, 90 - First rectangular slot, 91 - Second rectangular slot, 92 - Third rectangular slot, 93 - Fourth rectangular slot, 94 - Fifth rectangular slot, 95 - Sixth rectangular slot, 96 - Seventh rectangular slot, 97 - Eighth rectangular slot. Detailed implementation manners

[0072] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application. For the step numbers in the following embodiments, they are only set for the convenience of explanation and illustration, and no limitation is imposed on the order between the steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0073] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. The singular forms "a", "the", and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. In addition, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0074] In the description of the present application, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, 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.

[0075] In the description of the present application, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the number itself, and understandings such as "above", "below", "within", etc. include the number itself. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0076] In the description of the present application, " / and / " describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the front and rear associated objects.

[0077] Embodiment 1:

[0078] As Figure 1 shown, this embodiment provides a broadband self-decoupling two-element antenna array based on magnetoelectric coupling collaborative regulation, which includes two magnetoelectric dipole antenna units. The dielectric substrates on the two magnetoelectric dipole antenna units are put together to form two array first dielectric substrates 8 and array second dielectric substrates that are exactly the same in structure. The third dielectric substrates of the two magnetoelectric dipole antenna units are parallel to each other, and feeder lines are respectively provided on the two planes of the third dielectric substrate of each unit, and rectangular slits 90-97 are provided on the feeder lines.

[0079] The following Figures 2 - 6 combines with the specific implementation manners to elaborate on the magnetoelectric dipole antenna unit in detail.

[0080] See Figure 2 、 Figure 3 、Figure 4 , Figure 5 and Figure 6 , which is the magnetoelectric dipole antenna unit of this embodiment, includes two pairs of magnetoelectric dipole radiators, a substrate integrated waveguide structure 6 for coaxial conversion, two pairs of planar feeders, a first ground plane 10, a second ground plane 11, a first reflecting surface 20, and a second reflecting surface 21.

[0081] The magnetoelectric dipole radiator is composed of a combination of an electric dipole and a magnetic dipole.

[0082] Refer to Figure 2 , Figure 5 and Figure 6 , the first electric dipole includes a first L-shaped dipole arm 30 and a second L-shaped dipole arm 31, and the two L-shaped dipole arms of each pair of electric dipoles are printed on the two side surfaces of the corresponding dielectric substrate. The second electric dipole includes a third L-shaped dipole arm 40 and a fourth L-shaped dipole arm 41. Since the structure of the second dielectric substrate 4 is exactly the same as that of the first dielectric substrate 3, only the first dielectric substrate is shown in Figure 5 and Figure 6 .

[0083] As an implementation manner, the latter half of the dipole arm of the electric dipole bends downward to form a vertical part, generating a vertical current and expanding the beam width of the radiation pattern in the E-plane.

[0084] Refer to Figure 3 and Figure 4 , the first magnetic dipole includes a first upper-edge inclined metal patch 12 and a second upper-edge inclined metal patch 13, the second magnetic dipole includes a third upper-edge inclined metal patch 14 and a fourth upper-edge inclined metal patch 15, and the upper-edge inclined metal patches of each pair of magnetic dipoles are printed on the first surface and the second surface of the third dielectric substrate.

[0085] As an implementation manner, the upper edge of the metal patch constituting the magnetic dipole is inclined, changing the radiation beam angle of the magnetic dipole to control the beam width of the antenna in the H-plane.

[0086] The antenna is fed by a substrate integrated waveguide on the third dielectric substrate.

[0087] Refer to Figure 3 and Figure 4, the SIW metal vias 60-630 on the third dielectric substrate, together with the first ground plane 10 and the second ground plane 11, form a coaxial-to-substrate integrated waveguide structure and a very short section of substrate integrated waveguide. The SIW metal vias 60-630 connect the first ground plane and the second ground plane together. Among them, the SIW metal vias 60-630 form a through-hole ring with an opening, and a feeding metal via 5 and a matching via 7 are also provided inside the through-hole ring. Specifically, the feeding metal via 5 is used to form the coaxial-to-substrate integrated waveguide structure; the number of the matching vias 7 is 5, which is used to adjust the impedance matching of the conversion structure and reduce the loss.

[0088] The open end of the substrate integrated waveguide is converted into two pairs of planar feed lines 16-19 by two pairs of metal patches 12-15 with gradually changing widths, and each pair of planar feed lines is located on two surfaces of the third dielectric substrate respectively.

[0089] As a specific implementation manner, the key parameters of the magnetoelectric dipole unit (i.e., the self-decoupling magnetoelectric dipole antenna unit) of this embodiment are as follows: the lengths of the first L-shaped dipole arm 30, the second L-shaped dipole arm 31, the third L-shaped dipole arm 40, and the fourth L-shaped dipole arm 41 included in the electric dipole are approximately 0.25λg, where λg is the effective wavelength in the medium corresponding to the center frequency within the antenna band. The length of the upper-edge inclined metal patch included in the magnetic dipole is approximately 0.25λg. The thickness of the third dielectric substrate is 1.575 mm, and the thicknesses of the first and second dielectric substrates are 0.787 mm.

[0090] See Figure 7 The S-parameter performance achieved by the magnetoelectric dipole unit of this embodiment includes a bandwidth greater than 40% (covering 8-12 GHz) and an in-band gain greater than 6.3 dB. Figure 8 and Figure 9 respectively show that the antenna unit has a radiation efficiency greater than 92% and stable E-plane and H-plane radiation patterns within the band.

[0091] The comparison diagram of the E-plane beamwidth between the L-shaped electric dipole and the non-L-shaped electric dipole of the magnetoelectric dipole unit of this embodiment is as Figure 10 shown, and it can be seen from Figure 10 that after introducing the vertical current, the beamwidth of the antenna is significantly broadened.

[0092] The comparison diagram of the H-plane beamwidth and gain between the magnetoelectric dipole unit of this embodiment with the upper edge of the metal patch forming the magnetic dipole inclined and not inclined is as Figure 11 shown, and it can be seen from Figure 11 that after introducing the inclined edges symmetric about the center point, the beamwidth of the antenna in the H-plane is significantly changed.

[0093] After understanding the structure of the magnetoelectric dipole antenna element, the two-element antenna array will be analyzed below with reference to the accompanying drawings.

[0094] The broadband self-decoupling two-element antenna array based on magnetoelectric coupling collaborative regulation in this embodiment is composed of the above-mentioned magnetoelectric dipole elements arranged in the Y direction. As Figure 12 shown, the array first L-shaped dipole arm 81 and the array third L-shaped dipole arm 83 are printed on two surfaces of the array first dielectric substrate and overlap in the X direction. The element spacing is about 0.24λ, where λ is the spatial effective wavelength corresponding to the center frequency within the antenna band.

[0095] In this embodiment, magnetic coupling and electric coupling collaborative regulation are introduced between the antenna elements to achieve self-decoupling between the elements.

[0096] The magnetic coupling in this embodiment is introduced through the overlapping part of adjacent dipole arms. As Figure 12 shown. The magnetic field of the electric dipole is the strongest in the transverse part of its dipole arm, so the transverse parts of the electric dipole overlap in the X direction to introduce magnetic coupling.

[0097] See Figure 15 and Figure 16 , as an implementation manner, to strengthen the magnetic coupling, connection vias are introduced at the center in the Y direction of the array first L-shaped dipole arm 81 and the array third L-shaped dipole arm 83. The vias connect the array first L-shaped dipole arm 81 and the array third L-shaped dipole arm 83, and the position of the vias in the Y direction can regulate the magnitude of the magnetic coupling, thereby realizing the separate regulation of the magnetic coupling.

[0098] The electric coupling in this embodiment is introduced through the coupling between the edge of the vertical part of the dipole arm and the planar feeder line of the adjacent unit. As Figure 12 shown. The electric field of the electric dipole is the strongest at the edge of the vertical part of the dipole arm, so the vertical part of the electric dipole is close to the planar feeder line of the adjacent unit, and the electric coupling strength can be regulated by controlling the distance between the two.

[0099] See Figure 13 and Figure 14 , as an implementation manner, to strengthen the electric coupling, rectangular slots 90 - 97 are etched on the planar feeder line. In Figure 12 , the edge of the vertical part of the array first L-shaped dipole arm 81 is embedded into the rectangular slot 93, and the edge of the vertical part of the array third L-shaped dipole arm 83 is embedded into the rectangular slot 97, thereby strengthening the electric coupling strength. In Figure 13 , Figure 14The schematic diagrams of two surfaces of the third dielectric substrate of the first antenna element in the array are shown, and rectangular slots 90 to 93 are marked. On the third dielectric substrate of the second antenna element in the array, there is a structure exactly the same as that of the third dielectric substrate of the first antenna element in the array. Rectangular slots 90 to 97 are respectively designed on two surfaces of the third dielectric substrates of the two antenna elements.

[0100] As Figure 17 shown, Figure 17 is the curve diagram of the reflection coefficient and coupling coefficient of the broadband self-decoupling antenna array based on the synergistic regulation of magnetoelectric coupling provided by the embodiment of the present invention. It can be seen that the broadband self-decoupling structure designed in this embodiment realizes an isolation greater than 20 dB on average within the bandwidth of 8.75 - 11.75 GHz (about 30%). In Figure 18 the comparative values of the mutual coupling coefficients between the array elements with and without the decoupling structure are compared. This embodiment realizes an average isolation enhancement of 13 dB within a bandwidth of about 30%.

[0101] Embodiment 2:

[0102] As Figure 19 shown, a broadband self-decoupling antenna three-element array based on the synergistic regulation of magnetoelectric coupling disclosed in this embodiment includes three magnetoelectric dipole units as described in Embodiment 1. Connecting through holes are provided on two L-shaped dipole arms sandwiched between the third dielectric substrates of the three units, and there is no connecting through hole on the L-shaped dipole arm at the end.

[0103] This embodiment shows the decoupling function in the case where self-decoupling structures are loaded on both sides of the dipole. Its performance results are as Figure 20 shown. In Figure 20 it is shown that the three-element array realizes an isolation between units greater than 17 dB within a broadband range of about 14% from 9.5 to 10.9 GHz. It is proved that the self-decoupling structure of the present invention can be applied to a multi-element array.

[0104] In Figure 21 the comparative diagram of the coupling coefficient curves of the three-element array with and without connecting through holes is shown. Since the structure is arrayed in the Y direction and is symmetric in the Y direction, only the coupling coefficient curve with one adjacent unit needs to be shown. It can be seen from Figure 21 that the decoupling of the antenna with connecting through holes is significantly improved within the working frequency band. Figure 22 The comparative diagram of the coupling coefficient curves of the three-element array with and without the embedded structure is shown. It can be seen that the antenna decoupling with the embedded structure is significantly improved within the working frequency band.

[0105] Embodiment 3:

[0106] As Figure 23As shown in the figure, a broadband self-decoupling antenna array based on magnetoelectric coupling collaborative regulation disclosed in this embodiment is similar in structure to the broadband self-decoupling antenna array in Embodiment 1. The main difference is that the L electric dipole of the magnetoelectric dipole antenna in Embodiment 1 is replaced with an F-shaped electric dipole with the opening facing downwards. The other settings are the same as those in Embodiment 1 and will not be elaborated here.

[0107] Embodiment 4:

[0108] As Figure 24 shown in the figure, a broadband self-decoupling magnetoelectric dipole antenna array based on magnetoelectric coupling collaborative regulation disclosed in this embodiment. In Embodiment 4, the antenna units and self-decoupling structure in Embodiment 1 are used to form a linear eight-element array. Each adjacent antenna unit in the array is excited with the same phase difference, that is, the phases from the first unit to the eighth unit are 0, phase, 2*phase, 3*phase, 4*phase, 5*phase, 6*phase, 7*phase respectively, where 0° ≤ phase < 360°; the excitation amplitudes of each antenna unit are the same, thus forming a phased array that can be scanned.

[0109] Embodiment 5:

[0110] This embodiment provides a communication device, which is a transmitting and receiving device of a wireless communication system, including the broadband wide-beam magnetoelectric dipole antenna unit described in any one of the above; or, including the broadband self-decoupling magnetoelectric dipole antenna array based on magnetoelectric coupling collaborative regulation described above.

[0111] In the above description of this specification, the descriptions referring to the terms "one embodiment", "another embodiment" or "certain embodiments" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0112] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

[0113] The above is a specific description of the preferred embodiment of the present invention. However, the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A broadband self - decoupling magnetoelectric dipole two - element antenna array based on magnetoelectric coupling collaborative regulation, characterized in that It includes two magnetoelectric dipole units improved based on the self-decoupling structure; The electric dipole arms of the magnetoelectric dipole unit are L-shaped, including transverse and longitudinal parts with different widths; The magnetic dipole of the magnetoelectric dipole unit is composed of metal patches with gradually changing widths; The transverse parts of the electric dipole arms of the two magnetoelectric dipole units overlap in the X direction, introducing magnetic coupling between the units; The inner edges of the longitudinal parts of the overlapping electric dipole arms are connected by metal vias integrated on the dielectric substrate to strengthen the magnetic coupling; The longitudinal parts of the electric dipole arms introduce electrical coupling with the planar feed lines of adjacent units through the embedded structure; By simultaneously introducing magnetic coupling and electrical coupling, the inherent coupling is partially cancelled within a wide frequency band to achieve the self-decoupling function.

2. A broadband self - decoupling magnetoelectric dipole two - element antenna array based on magnetoelectric coupling collaborative regulation according to claim 1, characterized in that The magnetoelectric dipole unit is composed of a first, a second, a third dielectric substrate and a reflector; the first dielectric substrate and the second dielectric substrate are placed parallel to each other, perpendicular to the third dielectric substrate and assembled at the upper end of the third dielectric substrate.

3. A broadband self - decoupling magnetoelectric dipole two - element antenna array based on magnetoelectric coupling collaborative regulation according to claim 1, characterized in that, The magnetoelectric dipole unit has two pairs of electric dipoles, which are respectively located on the first dielectric substrate and the second dielectric substrate; the dipoles are fed by planar microstrip lines located on the third dielectric substrate.

4. A broadband self-decoupling magnetoelectric dipole two-element antenna array based on magnetoelectric coupling collaborative regulation according to claim 1, wherein The electric dipole is composed of transverse and longitudinal dipole arms with different widths to form an L-shaped dipole arm; the two dipole arms of the electric dipole are respectively located on the first surface and the second surface of the dielectric substrate where they are located, and can expand the E-plane beamwidth of the dipole.

5. A broadband self-decoupling magnetoelectric dipole two-element antenna array based on magnetoelectric coupling collaborative regulation according to claim 1, characterized in that, The third dielectric substrate is provided with a coaxial-substrate integrated waveguide conversion structure, a substrate integrated waveguide-planar feed line conversion structure, two pairs of metal patches with gradually changing widths and two pairs of planar feed lines; The substrate integrated waveguide is converted into two pairs of planar feed lines by two pairs of metal patches with gradually changing widths. Each pair of metal patches with gradually changing widths is respectively located on two surfaces of the third dielectric substrate, and each pair of planar feed lines is respectively located on two surfaces of the third dielectric substrate.

6. The broadband self-decoupling magnetoelectric dipole two-element antenna array based on magnetoelectric coupling collaborative regulation according to claim 1, wherein, The magnetoelectric dipole unit has two pairs of magnetic dipoles, which are composed of two pairs of metal patches with gradually changing widths and are excited by the open ends of the substrate integrated waveguide; The metal patches with gradually changing widths can also be regarded as metal patches with inclined upper edges, which can narrow the beamwidth of the antenna in the H plane and enhance the antenna gain.

7. A broadband self-decoupling magnetoelectric dipole two-element antenna array based on magnetoelectric coupling collaborative regulation according to claim 1, characterized in that The magnetoelectric dipole two-unit antenna array is composed of a first magnetoelectric dipole unit and a second magnetoelectric dipole unit arranged in the Y direction; The adjacent dipole arms of the first magnetoelectric dipole unit and the second magnetoelectric dipole unit are designed to be exactly located on the first surface and the second surface of the dielectric substrate where they are located respectively, that is, the two dipole arms overlap in the X direction.

8. A broadband self - decoupling magnetoelectric dipole two - element antenna array based on magnetoelectric coupling collaborative regulation according to claim 7, wherein, The embedded structure is the longitudinal edge of the dipole arm of the first magnetoelectric dipole unit adjacent to the second magnetoelectric dipole unit, which is embedded into the rectangular slot etched on the planar feed line of the second magnetoelectric dipole unit; The dipole arm of the second magnetoelectric dipole unit is embedded into the planar feed line of the first magnetoelectric dipole unit in the same way.

9. A broadband self-decoupling magnetoelectric dipole multi-element antenna array based on magnetoelectric coupling collaborative regulation, characterized in that, It includes the magnetoelectric dipole unit as described in any one of claims 1-8 and a broadband self-decoupling structure with synergistic regulation of magnetic and electrical coupling.

10. A communication device, characterized in that, It includes the antenna array as described in any one of claims 1-9.

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