Beam-enhanced broadband dual-polarization magnetoelectric dipole antenna applied to 5G N78 frequency band

Abstract

The invention provides a wave beam enhancement type broadband dual-polarization magnetoelectric dipole antenna applied to a 5G N78 frequency band, which is novel and unique in structure, and the main body part of the antenna comprises a bottom layer magnetoelectric dipole antenna, an upper layer folded and slotted electric dipole, a parasitic patch and a ground plane which take FR4 as a substrate, a metal column and two copper inverted L-shaped feed structures, the two SMA interfaces adopt a back feed form, are embedded from the bottom of the ground plane and are in contact with the two inverted L-shaped feed structures to form coupled feed, the bandwidth of the antenna is expanded through a laminated structure, the antenna works in a 5G N78 frequency band, the beam width of the antenna is expanded through a folded electric dipole and a loaded metal column, the working frequency bands of the two ports are 2.81 GHz-4. 27 GHz and 2.84 GHz-4. 16 GHz respectively, and the antenna has the advantages that the antenna is simple in structure and convenient to use. The impedance bandwidths are 41.2% and 37.7% respectively, the overlapping impedance bandwidth is 37.7% (2.84 GHz-4. 16 GHz), when the antenna port (1) is excited, the maximum E-surface beam width of the antenna is 211 degrees, the maximum H-surface beam width of the antenna is 126 degrees, when the antenna port (2) is excited, the maximum E-surface beam width of the antenna is 208 degrees, the maximum H-surface beam width of the antenna is 127 degrees, and the antenna has the advantages of wide band, wide beam, high frequency band and the like. The antenna has the advantages of high isolation and stable radiation direction, and is one of ideal candidate antennas of a base station in a future wireless communication system.

Description

Technical Field

[0001] The present invention belongs to the field of antenna technology, specifically a beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for 5G N78 frequency band Background Art

[0002] Antenna is an important RF front-end component in the fields of microwave wireless energy transmission and wireless communication. It is used to receive and radiate electromagnetic waves and realize the conversion between electromagnetic waves and guided waves.

[0003] With the rapid development of science and technology, the requirements for transmission rate and communication capacity in current communication systems are getting higher and higher. This requires antennas to have broadband performance. Broadband antennas can operate in a wide frequency range and support multiple different communication frequency bands. At the same time, broadband antennas can replace multiple narrowband antennas, thereby reducing the number of antennas and related installation and maintenance costs.

[0004] Secondly, half-power beamwidth is an important indicator to measure the radiation performance of antennas. In wireless communication systems such as satellite positioning, radar detection, remote sensing detection, and electronic countermeasures, in order to ensure the quality and rate of signal transmission, antennas often need to have a very wide beamwidth. This is because wide-beam antennas can radiate and receive signals within a wider angle range, without the need to precisely align with the target direction, to achieve signal coverage over a larger area. At the same time, a single wide-beam antenna can cover a larger area than a narrow-beam antenna, thereby reducing the number of antennas required in a specific area and reducing costs.

[0005] At the same time, the dual-polarization antenna can transmit and receive dual-polarization signals, improve system capacity, reduce the number of antennas, reduce the impact of multipath fading, and enhance signal stability.

[0006] As a new type of antenna that combines the characteristics of electric dipole and magnetic dipole, the magnetoelectric dipole antenna has the advantages of broadband, wide beam, stable radiation direction, low cross polarization, etc., which makes it widely used in the field of wireless communications in the future.

[0007] The paper "Ultrawideband Compact Magnetoelectric Dipole Antenna / Array With Dual-Polarization" implements a dual-polarization ultrawideband antenna operating in the 1-5 GHz frequency band by loading three layers of electromagnetic dipoles. However, the antenna's beamwidth range is only 60°-90°, which cannot meet the requirements of modern base station communications.

[0008] The paper "Compact Magneto-Electric Dipole Director Loaded High-Gain Dual-Polarized Magneto-Electric Dipole Antenna" achieves a maximum gain of 13.7dBi by loading a layer of magneto-electric dipole director on top of a traditional magneto-electric dipole antenna. However, its beamwidth and bandwidth are relatively narrow, which may make the antenna less than ideal in practical applications.

[0009] The document "Broadband Dual-Polarized Magnetoelectric Dipole Antenna With Compact Structure for 5G Base Station" uses rectangular slots to make two Γ-shaped feeding structures coplanar with the magnetic dipoles, effectively stimulating the magnetoelectric complementary source, achieving a compact structure and broadband antenna. Its bandwidth covers the 5G NRn77 / 78 / 79 frequency bands. However, the maximum beamwidth of the antenna in the E-plane and H-plane is only 72° and 83°.

[0010] Therefore, in view of the above technical background and literature introduction, the purpose of the present invention is to propose a beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for 5GN78 frequency band. Summary of the Invention

[0011] In response to the specific needs of wireless communication systems and microwave wireless energy transmission for antennas, the purpose of the present invention is to propose a beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for use in the 5G N78 frequency band. The antenna adopts a stacked structure and loads a layer of folded and slotted electric dipoles on top of the bottom magnetoelectric dipole antenna, thereby increasing the antenna's resonant frequency and achieving the antenna's broadband characteristics. By folding the electric dipole and loading it with metal columns, its surface current is extended, increasing the antenna radiation and effectively enhancing the antenna's beam width. Loading a parasitic patch increases the antenna's radiation, significantly improving the antenna's impedance matching.

[0012] In order to achieve the above object, the technical solution adopted by the present invention is:

[0013] A beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for the 5G N78 frequency band, consisting of a bottom magnetoelectric dipole antenna, an upper folded and slotted electric dipole, a parasitic patch and ground plane based on FR4, a metal column, and two Γ-shaped feed structures. The bottom magnetoelectric dipole antenna consists of a V-shaped magnetic dipole with a slotted bottom and a folded electric dipole.

[0014] Furthermore, the bottom magnetic electric dipole antenna, the upper folded and slotted electric dipole, and the metal column are all made of aluminum. The structure is novel. The slots at the bottom of the magnetic dipole enable the antenna to obtain multiple electromagnetic coupling channels, which cancel out the original coupling and greatly improve the isolation of the antenna. The folding of the electric dipole extends its surface current, increases the radiation of the antenna, and thus expands the beam width of the antenna. The impedance matching is well improved. The parasitic patch is covered with square copper on top to increase radiation and improve the impedance matching of the antenna. The lower surface of the ground plane is completely covered with copper to realize the current loop of the antenna. The two Γ-shaped feeding structures are made of copper.

[0015] Furthermore, the antenna adopts a stacked structure, with two Γ-shaped feeding structures placed orthogonally on the ground plane to achieve dual-polarization characteristics. The bottom magnetic electric dipole antenna and some metal columns are placed around the feeding structure, and a layer of folded and slotted electric dipole is placed squarely on the bottom magnetic electric dipole antenna. The purpose of adding a layer of electric dipole is to increase the resonant frequency of the antenna and expand the bandwidth of the antenna. The folding of the electric dipole extends its surface current path, increases the antenna radiation, and greatly expands the antenna beam width. The slotting of the electric dipole improves the antenna impedance matching. The parasitic patch and some metal columns are placed above the electric dipole to form the overall structure of the antenna.

[0016] Furthermore, two SMA connectors pass through the bottom of the ground plane, the inner conductor and flange of the SMA contact the ground plane to realize the current loop, and the two probes contact the Γ-shaped feeding structure to realize the feeding.

[0017] The beneficial effects of the above solution adopted by the present invention are:

[0018] This invention increases the antenna's resonant frequency by adding a layer of electric dipoles above the underlying magnetic dipole antenna, thereby achieving broadband characteristics and enabling operation in the 5G N78 frequency band. At the same time, folding the electric dipoles and introducing metal columns broaden the antenna's beam width, thus achieving a wide-beam antenna. Adding parasitic patches improves impedance matching, and slotting the bottom of the magnetic dipole increases the antenna's isolation. This antenna has a novel structure, low cost, and has advantages such as a wide bandwidth beam, high isolation, and stable radiation direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of an embodiment of the present invention

[0020] Figure 2 This is a diagram of the feeding structure in an embodiment of the present invention.

[0021] FIG3 is a diagram of the bottom magnetoelectric dipole structure in an embodiment of the present invention

[0022] Figure 4 This is the upper electric dipole structure diagram in the embodiment of the present invention

[0023] Figure 5 The reflection coefficient diagram of the two ports of the antenna in the embodiment of the present invention is

[0024] Figure 6 Schematic diagram of antenna isolation in an embodiment of the present invention

[0025] FIG7 is a radiation pattern of port (1) of the antenna in an embodiment of the present invention at 2.9 GHz, 3.2 GHz, 3.5 GHz, and 3.8 GHz

[0026] FIG8 is a radiation pattern of port (2) of the antenna in an embodiment of the present invention at 2.9 GHz, 3.2 GHz, 3.5 GHz, and 3.8 GHz

[0027] In the figure: 1. Main view structure, 2. Γ-shaped feeding structure, 3. Bottom-layer magnetoelectric dipole antenna structure, 4. Upper-layer electric dipole structure, 5. Antenna reflection coefficient diagram, 6. Antenna isolation diagram, 7. Radiation pattern of antenna port (1) at 2.9GHz, 3.2GHz, 3.5GHz, and 3.8GHz, 8. Radiation pattern of antenna port (2) at 2.9GHz, 3.2GHz, 3.5GHz, and 3.8GHz DETAILED DESCRIPTION

[0028] The present invention will be further described with reference to the accompanying drawings and specific embodiments.

[0029] In order to clearly illustrate the technical solutions in the embodiments of the present invention, the following specific examples are used to illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] A beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for the 5G N78 frequency band, comprising a bottom magnetoelectric dipole antenna, an upper folded and slotted electric dipole, a parasitic patch and ground plane based on FR4, a metal post, and two Γ-shaped feed structures. The bottom magnetoelectric dipole antenna comprises a V-shaped magnetic dipole with a slotted bottom and a folded electric dipole.

[0031] For the accuracy and convenience of the solution implementation, the center of the ground plane is used as the origin of the rectangular coordinate system. The starting coordinates of one feed structure are (13.65mm, 0mm), then extended 27.0mm along the positive direction of the Z axis, then extended 25.0mm along the negative direction of the X axis, and finally extended 14.0mm in the negative direction of the Z axis. The starting coordinates of the other feed structure are (0mm, 13.65mm), then extended 24.0mm in the positive direction of the Z axis, then extended 25.0mm in the negative direction of the Y axis, and finally extended 13.0mm in the negative direction of the Z axis, forming two Γ-shaped feed structures. Table 1 Feed structure parameters

[0032] Furthermore, the feed structure is made of copper, and the size and position of the feed structure are optimized to improve the antenna impedance. The parameters of the feed structure are finally determined as shown in Table 1.

[0033] Furthermore, the upper surface of the parasitic patch is covered with square copper to increase radiation and improve antenna impedance matching. The lower surface of the ground plane is completely covered with copper to form a current loop. The dielectric constant of the substrate is 4.4, the thickness is 1.5mm and 1.8mm, and the length is 88mm and 35mm respectively. The length and width of the square copper on the parasitic patch are both 20mm. The structural parameters of the parasitic patch and the ground plane are finally determined as shown in Table 2. Table 2 Parasitic patch and ground plane parameters

[0034] Furthermore, the antenna adopts a stacked structure, and the bottom magnetoelectric dipole antenna is orthogonally placed around two Γ-shaped feeding structures. The bottom magnetoelectric dipole antenna consists of a V-shaped magnetic dipole with a slotted bottom and a folded electric dipole. Its structure is novel. The slots at the bottom of the magnetic dipole enable the antenna to obtain multiple electromagnetic coupling channels, which cancel out the original coupling and greatly improve the isolation of the antenna. The distance between each magnetoelectric dipole is 6.8mm, the magnetic dipole length is 17mm, the width is 5.4mm, and the height is 30mm. Since the antenna is a symmetrical structure, taking the magnetic dipole in the first quadrant as an example, the starting coordinates of the magnetic dipole are (3.4mm, 3.4mm), and the bottom of the V-shaped magnetic dipole is slotted. Slots are made at 11.8mm along the positive direction of the X-axis and Y-axis, with a length and width of 5.5mm and a height of 13.7mm. A layer of folded electric dipole is loaded on top of the V-shaped magnetic dipole to form a magnetic electric dipole antenna. Folding the electric dipole extends its surface current, increases the radiation of the antenna, and improves the impedance matching of the antenna. Taking the first quadrant electric dipole as an example, the starting coordinates of the electric dipole are (3.4mm, 3.4mm, 30.0mm), extending along the positive direction of the X-axis and Y-axis respectively. Its length and width are 21mm, the thickness is 0.5mm, and the height of the folded part is 12.5mm. Several metal pillars are placed under the electric dipole with a radius of 1.5mm and a height of 18mm. The spacing between each metal pillar is 10.5mm. All of the above are made of aluminum. The final structural parameters of the magnetic electric dipole and metal pillars are shown in Table 3. Table 3 Structural parameters of magnetoelectric dipole and metal column

[0035] Furthermore, a layer of folded and slotted electric dipole is loaded on top of the bottom magnetoelectric dipole antenna. The two are physically connected using white insulating nylon columns with a spacing of 0.5mm. The purpose of adding a layer of electric dipole is to increase the resonant frequency of the antenna and expand the bandwidth of the antenna. Folding the electric dipole extends its surface current path, increases antenna radiation, and greatly expands the beam width of the antenna. Slotting the electric dipole changes the current distribution on the antenna surface, which greatly improves the antenna impedance matching. Taking the first quadrant as an example, its starting point coordinates are (3.4mm, 3.4mm, 31.0mm), extending along the positive directions of the X-axis and Y-axis respectively. The length and width of the electric dipole are both 38mm, the thickness is 1.2mm, the height of the folded part is 15mm, and the slot shape is V-shaped. Starting from the coordinates (4.6mm, 4.6mm), the slot is slotted in the positive directions of the X-axis and Y-axis. Its length is 33mm and its width is 6.5mm.

[0036] Furthermore, the parasitic patch and the folded and slotted electric dipole are physically connected with white insulating nylon columns with a spacing of 6.3 mm. Four aluminum metal columns are loaded between the parasitic patch and the folded and slotted electric dipole to increase the horizontal radiation of the antenna, thereby enhancing the antenna beam width. Taking the first quadrant as an example, its starting point coordinates are (8.0 mm, 8.0 mm, 32.2 mm), its radius is 1.5 mm, and its height is 6.3 mm. The final structural parameters of the upper electric dipole and metal columns are shown in Table 4.

[0037] Further, Figure 5 The reflection coefficient diagram of the two ports of this antenna is given. Through the stacked structure, the antenna loads a layer of folded and slotted electric dipole on top of the bottom magnetoelectric dipole antenna. By changing the current distribution on the antenna surface, the antenna resonant frequency is increased, thereby expanding the antenna bandwidth. It operates in the 5G N78 frequency band (3.3GHz~3.8GHz). It can be seen from the figure that the operating frequency bands of the two ports are 2.81GHz~4.27GHz and 2.84GHz~4.16GHz, respectively, and the impedance bandwidths are 41.2% and 37.7%, respectively. The antenna overlap impedance bandwidth is 37.7% (2.84GHz~4.16GHz). The antenna achieves a wide bandwidth.

[0038] Further, Figure 6 The port isolation diagram of this antenna is given. The purpose of slotting the bottom of the magnetic dipole of the bottom magnetoelectric dipole is to enable the antenna to obtain multiple electromagnetic coupling channels, which cancels out the original coupling and greatly improves the isolation of the antenna. It can be seen from the figure that the isolation of the antenna is greater than 20dB within the working range, achieving a high isolation, which is suitable for future 5G base station communication systems. Table 4 Structural parameters of upper electric dipole and metal column

[0039] Furthermore, Figure 7 shows the radiation pattern of the antenna at port (1) when the frequencies are 2.9 GHz, 3.2 GHz, 3.5 GHz, and 3.8 GHz. By folding the electric dipole and introducing a metal column, the antenna beam width is enhanced. It can be seen from the figure that the antenna is stable in the radiation direction of the two ports. When the antenna port (1) is excited, the antenna has a maximum beam width of 211° on the E plane and a maximum beam width of 126° on the H plane.

[0040] Furthermore, Figure 8 shows the radiation pattern of the antenna at port (2) when the frequencies are 2.9 GHz, 3.2 GHz, 3.5 GHz, and 3.8 GHz. It can be seen from the figure that the antenna is stable in the radiation direction of the two ports. When the antenna port (2) is excited, the antenna has a maximum beam width of 208° on the E plane and a maximum beam width of 127° on the H plane.

[0041] Brief working principle of the present invention:

[0042] In order to achieve the wide beam and broadband performance of the antenna, the surface current path is extended and the antenna radiation is increased by folding the electric dipole and loading metal columns, which effectively improves the antenna beam width. By adopting a stacked structure, a layer of electric dipole is loaded on the bottom magnetoelectric dipole antenna, which increases the resonant frequency of the antenna and thus improves the bandwidth of the antenna. Loading parasitic patches improves the antenna impedance matching.

Claims

1. A beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for the 5G N78 frequency band, featuring: The antenna adopts a stacked structure, and its main body includes two copper Γ-shaped feeding structures (2), a parasitic patch (5) with FR4 as the base, a bottom-layer magnetoelectric dipole antenna (3), an upper folded and slotted electric dipole (4), a metal column and a ground plane with FR4 as the base, the bottom-layer magnetoelectric dipole antenna (3) and the two Γ-shaped feeding structures (2) are orthogonally placed on the ground plane, the upper folded and slotted electric dipole (4) is located above the bottom-layer magnetoelectric dipole antenna (3), and the bottom-layer magnetoelectric dipole antenna (3) is placed on the ground plane. The antenna (3) is composed of a V-shaped magnetic dipole with a slotted bottom and a folded electric dipole. The parasitic patch (5) is located above the upper folded and slotted electric dipole (4). Each of the components is connected by an insulating white nylon column to ensure the stability of the antenna prototype and complete the test. Finally, the two SMA connectors adopt a back-feed feeding method, passing through the bottom of the ground plane and contacting with two copper Γ-shaped feeding structures (2) to achieve feeding and form the final antenna working mode. The antenna plays a very important role in 5G base station communications.

2. The beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for the 5G N78 frequency band according to claim 1, characterized in that: The bottom-layer magnetic dipole antenna (3) is composed of a V-shaped magnetic dipole with a slotted bottom and a folded electric dipole. The structure is novel. The purpose of slotting the bottom of the magnetic dipole is to enable the antenna to obtain multiple electromagnetic coupling channels, so that the original coupling is offset, thereby greatly improving the isolation of the antenna. The magnetic dipole is 17 mm long, 5.4 mm wide, and 30 mm high. Since the antenna is a symmetrical structure, taking the magnetic dipole in the first quadrant as an example, the starting coordinates of the magnetic dipole are (3.4 mm, 3.4 mm). The bottom of the V-shaped magnetic dipole is slotted, and the slots are respectively along the positive directions of the X axis and the Y axis at 11.8 mm. The slot has a length and width of 5.5 mm and a height of 13.7 mm. A folded electric dipole is loaded on top of the magnetic dipole to form a magneto-electric dipole antenna. The electric dipole is folded so that its surface current is extended, thereby increasing the radiation of the antenna and increasing the antenna beam width and impedance matching. Taking the first quadrant electric dipole as an example, the coordinates of the starting point of the electric dipole are (3.4 mm, 3.4 mm, 30.0 mm), extending along the positive directions of the X axis and the Y axis respectively. Its length and width are both 21 mm, the thickness is 0.5 mm, and the height of the folded part is 12.5 mm. The bottom magneto-electric dipole antenna (3) is made of aluminum.

3. The beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for the 5G N78 frequency band according to claim 1, characterized in that: The Γ-shaped feeding structure (2) is made of copper, and the two are placed orthogonally to achieve dual-polarization characteristics. At the same time, the size and position of the feeding structure are optimized so that the antenna impedance matching is improved. The center of the ground plane is used as the origin of the rectangular coordinate system. The starting coordinates of one feeding structure are (13.65mm, 0mm), then extended 27.0mm along the positive direction of the Z axis, then extended 25.0mm along the negative direction of the X axis, and finally extended 14.0mm in the negative direction of the Z axis. The starting coordinates of the other feeding structure are (0mm, 13.65mm), then extended 24.0mm in the positive direction of the Z axis, then extended 25.0mm along the negative direction of the Y axis, and finally extended 13.0mm in the negative direction of the Z axis, forming two Γ-shaped feeding structures.

4. The beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for the 5G N78 frequency band according to claim 1, characterized in that: The upper folded and slotted electric dipole (4) is made of aluminum and is spaced 0.5 mm apart from the bottom magnetic electric dipole antenna (3). The purpose of adding a layer of electric dipole is to increase the resonant frequency of the antenna and expand the bandwidth of the antenna. Folding the electric dipole extends its surface current path, increases antenna radiation, greatly expands the antenna beam width and improves the antenna impedance matching. Slotting the electric dipole improves its surface current distribution, so that the antenna impedance matching is well improved. Taking the first quadrant as an example, its starting point coordinates are (3.4 mm, 3.4 mm, 31.0 mm), extending along the positive directions of the X axis and the Y axis respectively. The length and width of the electric dipole are both 38 mm, the thickness is 1.2 mm, the height of the folded part is 15 mm, and the slot shape is V-shaped. Starting from the coordinates (4.6 mm, 4.6 mm), the slot is slotted in the positive directions of the X axis and the Y axis. The length is 33 mm and the width is 6.5 mm.

5. The beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for the 5G N78 frequency band according to claim 1, characterized in that: The parasitic patch (5) and the ground plane are both based on FR4 as the dielectric substrate, with a dielectric constant of 4.4, a loss tangent of 0.02, a thickness of 1.5 mm and 1.8 mm, and a length of 88 mm and 35 mm, respectively. The length and width of the parasitic patch copper are both 20 mm, and the purpose is to increase the radiation of the antenna and improve the antenna impedance matching. The purpose of the ground plane copper is to form a complete current loop for the antenna when the copper probe of the SMA connector passes through the bottom of the ground plane, thereby ensuring that the antenna can work normally.

6. The beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for 5G N78 frequency band according to claim 1, characterized in that: The metal posts are all made of aluminum. Several metal posts are placed under the bottom magnetoelectric dipole antenna (3) to increase the horizontal radiation of the antenna, thereby enhancing the beam width of the antenna. The radius of the metal post is 1.5 mm, the height is 18 mm, and the distance between each metal post is 10.5 mm. Four aluminum metal posts are loaded between the upper folded and slotted electric dipole (4) and the parasitic patch (5) to increase the horizontal radiation of the antenna and improve the impedance matching of the antenna, thereby enhancing the beam width of the antenna. Taking the first quadrant as an example, its starting point coordinates are (8.0 mm, 8.0 mm, 32.2 mm), its radius is 1.5 mm, and its height is 6.3 mm.

7. The beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for 5G N78 frequency band according to claim 1, characterized in that: The two SMA connectors use a back-feed feeding method. The copper probe of the SMA connector passes through the bottom of the ground plane. The inner conductor and flange of the SMA contact the ground plane to realize the current loop. The two probes contact the Γ-shaped feeding structure to realize feeding, and the antenna enters the working mode.

8. The beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for 5G N78 frequency band according to claim 1, characterized in that: The antenna has a stacked structure, with a layer of folded and slotted electric dipole (4) loaded on top of the bottom magnetoelectric dipole antenna (3). By changing the current distribution on the antenna surface, the antenna resonant frequency is increased, thereby expanding the antenna bandwidth. The antenna operates in the 5G N78 frequency band (3.3GHz to 3.8GHz), and the operating frequency bands of the two ports are 2.81GHz to 4.27GHz and 2.84GHz to 4.16GHz, respectively. The impedance bandwidths are 41.2% and 37.7%, respectively. The antenna overlap impedance bandwidth is 37.7% (2.84GHz to 4.16GHz).

9. The beam-enhanced broadband dual-polarized magnetoelectric dipole antenna for 5G N78 frequency band according to claim 1, characterized in that: The antenna extends the surface current by folding the electric dipole, thereby increasing the radiation of the antenna and expanding the beam width of the antenna. By loading the metal column, the beam width of the antenna in the horizontal direction is increased, and ultimately the beam width of the antenna in the E plane and the H plane is greatly expanded. When the antenna port (1) is excited, the maximum beam width of the antenna in the E plane is 211°, and the maximum beam width of the H plane is 126°. When the antenna port (2) is excited, the maximum beam width of the antenna in the E plane is 208°, and the maximum beam width of the H plane is 127°.

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