Magnetic electric dipole antenna

Abstract

The application provides a magnetic electric dipole antenna. The magnetic electric dipole antenna comprises a metal floor, a dielectric substrate, a first patch and a second patch, a short-circuit column and a feeding port; the dielectric substrate is arranged on the metal floor; the first patch and the second patch are symmetrically arranged on the dielectric substrate, and the first patch and the second patch have a gap therebetween; the short-circuit column comprises a plurality of first short-circuit columns and a plurality of second short-circuit columns; the plurality of first short-circuit columns are arranged at the edge of the first patch, and the plurality of first short-circuit columns are electrically connected between the first patch and the metal floor; the plurality of second short-circuit columns are arranged at the edge of the second patch, and the plurality of second short-circuit columns are electrically connected between the second patch and the metal floor; the feeding port comprises a first feeding port and a second feeding port; the first feeding port is arranged on the first patch; and the second feeding port is arranged on the second patch. The application provides a magnetic electric dipole antenna, which has the advantages of low profile and simple structure.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a magnetoelectric dipole antenna. Background Technology

[0002] Due to their excellent radiation characteristics, magnetoelectric dipole antennas are widely used in base station equipment. With the rapid development of communication technology, the requirements for high performance, low profile, and miniaturization of magnetoelectric dipole antennas have been further increased.

[0003] In the prior art, in order to reduce the profile of a magnetoelectric dipole antenna, the magnetic dipole is generally folded to reduce its profile height, or a dielectric loading method is used to reduce the profile height.

[0004] However, the magnetoelectric dipole antenna designed using the above method has a complex structure, which increases the difficulty of integrating the antenna with the back-end circuitry. Summary of the Invention

[0005] To address at least one of the problems mentioned in the background art, the present invention provides a magnetoelectric dipole antenna with the advantages of low profile and simple structure.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a magnetoelectric dipole antenna, comprising a metal ground plane, a dielectric substrate, a first patch and a second patch, a shorting post, and a feed port;

[0008] A dielectric substrate is disposed on a metal floor, and a first patch and a second patch are symmetrically disposed on the dielectric substrate, with a gap between the first patch and the second patch;

[0009] The shorting post includes multiple first shorting posts and multiple second shorting posts. The multiple first shorting posts are disposed at the edge of the first patch and are electrically connected between the first patch and the metal ground plane. The multiple second shorting posts are disposed at the edge of the second patch and are electrically connected between the second patch and the metal ground plane.

[0010] The power supply ports include a first power supply port and a second power supply port. The first power supply port is disposed on a first patch, and the second power supply port is disposed on a second patch.

[0011] As an optional implementation, the first patch and the second patch are rectangular or square in shape.

[0012] As an alternative implementation, the first side of the first patch and the first side of the second patch are arranged parallel to each other and opposite to each other to form a gap.

[0013] As an optional implementation, the width of the gap between the first patch and the second patch is less than or equal to one-quarter of a preset wavelength, where the preset wavelength is the wavelength corresponding to the operating frequency of the magnetoelectric dipole antenna.

[0014] As an alternative implementation, the first patch and the second patch are connected to the dielectric substrate and the shorting post by soldering or conductive adhesive.

[0015] As an alternative implementation, the metal floor and the dielectric substrate are rectangular or square in shape, and the metal floor and the dielectric substrate are bonded together.

[0016] As an alternative implementation, the metal floor can be made of copper or aluminum.

[0017] As an optional implementation, the dielectric substrate is a flame-retardant copper-clad laminate.

[0018] As an optional implementation, a plurality of first short-circuit posts are spaced apart on the second side of the first patch, and a plurality of second short-circuit posts are spaced apart on the second side of the second patch. The second side of the first patch is adjacent to the first side of the first patch, and the second side of the second patch is adjacent to the first side of the second patch.

[0019] As an optional implementation, the first power supply port and the second power supply port are copper pillar structures, and the first power supply port and the second power supply port are symmetrically arranged with respect to the gap.

[0020] The magnetoelectric dipole antenna provided by this invention includes a metal ground plane, a dielectric substrate, a first patch and a second patch, short-circuit posts, and a feed port. The dielectric substrate is disposed on the metal ground plane, and the first patch and the second patch are symmetrically disposed on the dielectric substrate with a gap between them. The short-circuit posts include a plurality of first short-circuit posts and a plurality of second short-circuit posts. The plurality of first short-circuit posts are disposed on the edges of the first patch and are electrically connected between the first patch and the metal ground plane. The plurality of second short-circuit posts are disposed on the edges of the second patch and are electrically connected between the second patch and the metal ground plane. The feed port includes a first feed port and a second feed port. The first feed port is disposed on the first patch, and the second feed port is disposed on the second patch.

[0021] The magnetoelectric dipole antenna provided by this invention utilizes a dielectric substrate mounted on a metal ground plane. A feed port and symmetrical first and second patches are positioned on the dielectric substrate, with short-circuit posts at the edges of the first and second patches. This significantly reduces the antenna's profile height and allows for balanced feeding at the opening edges of the first and second patches. The current directions at the patch edges are aligned and opposite to those on the metal ground plane, resulting in mutually perpendicular magnetic and electric dipoles. This improves the alignment between the E-plane (electric field) and H-plane (magnetic field). The short-circuit posts at the edges of the first and second patches enable grounding, further enhancing radiation performance. Therefore, compared to existing magnetoelectric dipole antennas, the antenna provided by this invention offers advantages such as high performance, low profile, and simple structure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a magnetoelectric dipole antenna provided in an embodiment of the present invention;

[0024] Figure 2 for Figure 1 Top view;

[0025] Figure 3 A schematic diagram illustrating the variation of scattering parameters of a magnetoelectric dipole antenna with frequency, provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the radiation direction of a magnetoelectric dipole antenna provided in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100-Magnetic-Electro-Dipole Antenna;

[0029] 110 - Metal floor;

[0030] 120 - Dielectric substrate;

[0031] 130 - First patch;

[0032] 140 - Second patch;

[0033] 150 - First short-circuit post;

[0034] 160 - Second short-circuit post;

[0035] 170 - First feed port;

[0036] 180 - Second power supply port. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In this application, the terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” “outer,” “vertical,” “horizontal,” “lateral,” and “longitudinal” indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0040] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0042] In existing technologies, to reduce the profile of a magnetoelectric dipole antenna, the magnetic dipole is typically folded to lower its profile height, or a dielectric loading method is used. However, the magnetoelectric dipole antennas designed using these methods have complex structures, increasing the difficulty of integrating the antenna with the back-end circuitry.

[0043] In view of this, the present invention provides a magnetoelectric dipole antenna, comprising a metal ground plane, a dielectric substrate, a first patch and a second patch, shorting posts, and a feed port; the dielectric substrate is disposed on the metal ground plane, the first patch and the second patch are symmetrically disposed on the dielectric substrate, and there is a gap between the first patch and the second patch; the shorting posts include a plurality of first shorting posts and a plurality of second shorting posts, the plurality of first shorting posts are disposed on the edge of the first patch, and the plurality of first shorting posts are electrically connected between the first patch and the metal ground plane, the plurality of second shorting posts are disposed on the edge of the second patch, and the plurality of second shorting posts are electrically connected between the second patch and the metal ground plane; the feed port includes a first feed port and a second feed port, the first feed port is disposed on the first patch, and the second feed port is disposed on the second patch. The magnetoelectric dipole antenna provided by this invention can significantly reduce the profile height of the antenna. Furthermore, it allows for balanced feeding at the opening edges of the first and second patches, ensuring that the current direction at the patch edges is the same and opposite to the current direction on the metal ground plane. This creates mutually perpendicular magnetic and electric dipoles, improving the alignment between the E-plane (electric field) and H-plane (magnetic field). Short-circuit posts are placed at the edges of the first and second patches for grounding, further enhancing radiation performance. Therefore, compared to existing magnetoelectric dipole antennas, the magnetoelectric dipole antenna provided by this invention offers advantages such as high performance, low profile, and simple structure.

[0044] Figure 1 This is a schematic diagram of the overall structure of a magnetoelectric dipole antenna provided in an embodiment of the present invention; Figure 2 for Figure 1 Top view; Figure 3 A schematic diagram illustrating the variation of scattering parameters of a magnetoelectric dipole antenna with frequency, provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the radiation direction of a magnetoelectric dipole antenna provided in an embodiment of the present invention.

[0045] You can refer to this. Figures 1 to 4This invention provides a magnetoelectric dipole antenna 100, comprising a metal ground plane 110, a dielectric substrate 120, a first patch 130 and a second patch 140, shorting posts, and a feed port. The dielectric substrate 120 is disposed on the metal ground plane 110, and the first patch 130 and the second patch 140 are symmetrically disposed on the dielectric substrate 120, with a gap between the first patch 130 and the second patch 140. The shorting posts include a plurality of first shorting posts 150 and a plurality of second shorting posts 160, wherein the plurality of first shorting posts 150 are disposed... At the edge of the first patch 130, a plurality of first shorting posts 150 are electrically connected between the first patch 130 and the metal ground plane 110. A plurality of second shorting posts 160 are disposed at the edge of the second patch 140 and are electrically connected between the second patch 140 and the metal ground plane 110. The power supply port includes a first power supply port 170 and a second power supply port 180 symmetrically arranged. The first power supply port 170 is disposed on the first patch 130 and the second power supply port 180 is disposed on the second patch 140.

[0046] The magnetoelectric dipole antenna 100 provided in this embodiment of the invention has a dielectric substrate 120 disposed on a metal ground plane 110. Symmetrical feed ports and symmetrical first patches 130 and second patches 140 are disposed on the dielectric substrate 120, and short-circuit posts are disposed at the edges of the first patches 130 and the second patches 140, respectively. On the one hand, the cross-sectional height of the magnetoelectric dipole antenna 100 can be greatly reduced. On the other hand, the first feed port 170 and the second feed port 180 can form a balanced feed at the opening edges of the first patches 130 and the second patches 140, so that the current direction at the patch edges is the same and opposite to the current direction on the metal ground plane 110. Thus, mutually perpendicular magnetic dipoles and electric dipoles can be formed, thereby improving the matching effect of the E-plane (electric field) and the H-plane (magnetic field). The short-circuit posts disposed at the edges of the first patches 130 and the second patches 140 can be grounded through the short-circuit posts, thereby improving the radiation effect. Therefore, compared with the existing magnetoelectric dipole antenna 100, the magnetoelectric dipole antenna 100 provided in this embodiment of the invention has the advantages of high performance, low profile and simple structure.

[0047] In the above embodiments, the first patch 130 and the second patch 140 can be designed to be rectangular or square. Designing the first patch 130 and the second patch 140 to be rectangular or square simplifies the circuit board structure, reduces manufacturing difficulty, and improves the strength and stability of the circuit board. Furthermore, rectangular or square antenna patches can reduce electromagnetic wave reflection and scattering, improving antenna performance.

[0048] In the above embodiments, the first side of the first patch 130 and the first side of the second patch 140 can be arranged parallel and opposite to each other to form a gap. Specifically, the width of the gap between the first patch 130 and the second patch 140 is less than or equal to one-quarter of a preset wavelength, where the preset wavelength is the wavelength corresponding to the operating frequency of the magnetoelectric dipole antenna 100. It can be understood that if the width of the gap between the first patch 130 and the second patch 140 is too large, on the one hand, it will lead to a decrease in the resonant frequency of the antenna, and on the other hand, it will also increase the size of the antenna, which is not conducive to the miniaturization and integration of the antenna.

[0049] In the above embodiments, the first patch 130 and the second patch 140 can be connected to the dielectric substrate 120 and the shorting post by soldering or conductive adhesive. Using soldering or conductive adhesive to connect the antenna patch, the dielectric substrate 120, and the shorting post can reduce impedance discontinuities at the connection points, improving the antenna's radiation efficiency and gain. Furthermore, soldering and conductive adhesive connections are relatively secure and less prone to loosening or detachment. In addition, the shorting post can be a hollow structure. Specifically, through-holes can be first formed between the first patch 130, the second patch 140, and the metal ground plane 110, and then a layer of conductive metal can be electroplated on the inner wall of the through-holes to form a hollow conductive post structure, thereby grounding the first patch 130 and the second patch 140.

[0050] In the above embodiments, the metal ground plane 110 and the dielectric substrate 120 can be rectangular or square in shape, and are bonded together. The rectangular or square shape of the metal ground plane 110 and the dielectric substrate 120 not only facilitates the design and manufacture of the circuit board but also improves its strength and stability. Furthermore, the rectangular or square shape of the metal ground plane 110 and the dielectric substrate 120 can reduce electromagnetic wave reflection and scattering, thus improving antenna performance.

[0051] In the above embodiments, the metal floor 110 can be a copper plate or an aluminum plate. Copper plates have good electrical and thermal conductivity as well as high mechanical strength, and can withstand greater tensile and compressive forces. Aluminum plates are lighter, cheaper, and have a smooth surface, which can reduce the reflection and scattering of electromagnetic waves and improve the gain and directivity of the antenna.

[0052] In the above embodiments, the dielectric substrate 120 can be made of flame-retardant copper clad laminate (FR-4). FR-4 has good mechanical strength, can withstand large external forces, and is not easily deformed. FR-4 also has good flame retardancy and high safety. Furthermore, FR-4 has relatively stable dielectric constant and loss factor, which can ensure that the signal is attenuated and distorted during transmission, thereby improving the signal transmission quality.

[0053] In the above embodiment, a plurality of first short-circuit posts 150 are spaced apart on the second side of the first patch 130, and a plurality of second short-circuit posts 160 are spaced apart on the second side of the second patch 140. The second side of the first patch 130 is adjacent to the first side of the first patch 130, and the second side of the second patch 140 is adjacent to the first side of the second patch 140.

[0054] In the above embodiments, the first feed port 170 and the second feed port 180 can be copper pillar structures, and the first feed port 170 and the second feed port 180 are symmetrically arranged about the gap. By symmetrically arranging the first feed port 170 and the second feed port 180 about the gap between the first patch 130 and the second patch 140, the antenna gain and bandwidth can be improved, and the problems of antenna cross-polarization and back radiation can be reduced, thereby improving the stability and reliability of the antenna. The first feed port 170 and the second feed port 180 can be fed using a coaxial probe method.

[0055] In addition, from Figure 3 It can be seen that the center frequency of the planar magnetoelectric dipole antenna 100 is 4.85 GHz. In the frequency range from 4.8 GHz to 4.9 GHz, the scattering parameter (S parameter in the figure) is less than -10 dB, the relative bandwidth is 2%, and the overall profile is 0.04 wavelengths, which is relatively low.

[0056] Figure 4 The radiation pattern of the magnetoelectric dipole antenna 100 at the center frequency of 4.85 GHz shows that its radiation characteristics are upward and the main polarizations of the E-plane and H-plane match well, which satisfies the radiation characteristics of the magnetoelectric dipole antenna 100.

[0057] The magnetoelectric dipole antenna 100 provided in this embodiment of the invention includes a metal ground plane 110, a dielectric substrate 120, a first patch 130 and a second patch 140, shorting posts, and a feed port. The dielectric substrate 120 is disposed on the metal ground plane 110, and the first patch 130 and the second patch 140 are symmetrically disposed on the dielectric substrate 120, with a gap between the first patch 130 and the second patch 140. The shorting posts include a plurality of first shorting posts 150 and a plurality of second shorting posts 160, with the plurality of first shorting posts 150 disposed on the metal ground plane 110. The edge of the first patch 130 has multiple first shorting posts 150 electrically connected between the first patch 130 and the metal ground plane 110. Multiple second shorting posts 160 are disposed on the edge of the second patch 140 and are electrically connected between the second patch 140 and the metal ground plane 110. The power supply port includes a symmetrically arranged first power supply port 170 and a second power supply port 180. The first power supply port 170 is disposed on the first patch 130, and the second power supply port 180 is disposed on the second patch 140.

[0058] The magnetoelectric dipole antenna 100 provided in this embodiment of the invention has a dielectric substrate 120 disposed on a metal ground plane 110. Symmetrical feed ports and symmetrical first patches 130 and second patches 140 are disposed on the dielectric substrate 120, and short-circuit posts are disposed at the edges of the first patches 130 and the second patches 140, respectively. On the one hand, the cross-sectional height of the magnetoelectric dipole antenna 100 can be greatly reduced. On the other hand, balanced feeding can be formed at the opening edges of the first patches 130 and the second patches 140, so that the current direction at the patch edges is the same and opposite to the current direction on the metal ground plane 110. Thus, mutually perpendicular magnetic dipoles and electric dipoles can be formed, thereby improving the matching effect of the E-plane (electric field) and the H-plane (magnetic field). The short-circuit posts disposed at the edges of the first patches 130 and the second patches 140 can be grounded through the short-circuit posts, thereby improving the radiation effect. Therefore, compared with the existing magnetoelectric dipole antenna 100, the magnetoelectric dipole antenna 100 provided in this embodiment of the invention has the advantages of high performance, low profile and simple structure.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magneto-electric dipole antenna, characterized by, The metal floor, the dielectric substrate, the first patch and the second patch, the shorting post and the feed port are included. The dielectric substrate is arranged on the metal floor, the first patch and the second patch are symmetrically arranged on the dielectric substrate, and the first patch and the second patch have a gap therebetween. The shorting post includes a plurality of first shorting posts and a plurality of second shorting posts, the plurality of first shorting posts are arranged at the edge of the first patch, the plurality of first shorting posts are electrically connected between the first patch and the metal floor, the plurality of second shorting posts are arranged at the edge of the second patch, and the plurality of second shorting posts are electrically connected between the second patch and the metal floor. The feed port includes a first feed port and a second feed port, the first feed port is arranged on the first patch, and the second feed port is arranged on the second patch. The first patch and the second patch are rectangular or square in shape. The arrangement direction of the plurality of first shorting posts is the same as that of the plurality of second shorting posts. The width of the gap between the first patch and the second patch is less than or equal to one fourth of a preset wavelength, and the preset wavelength is a wavelength corresponding to the operating frequency of the magnetic-electric dipole antenna. The first feed port and the second feed port are symmetrically arranged about the gap, and the first feed port and the second feed port are fed by coaxial probes. The first side of the first patch and the first side of the second patch are arranged in parallel and opposite to each other to form the gap. The plurality of first shorting posts are arranged at the second side of the first patch, the plurality of second shorting posts are arranged at the second side of the second patch, the second side of the first patch is adjacent to the first side of the first patch, and the second side of the second patch is adjacent to the first side of the second patch.

2. The magnetoelectric dipole antenna according to claim 1, wherein The first patch and the second patch are connected to the dielectric substrate and the shorting post by welding or conductive glue.

3. The magnetoelectric dipole antenna according to claim 1 or 2, characterized by The metal floor and the dielectric substrate are rectangular or square in shape, and the metal floor and the dielectric substrate are bonded together.

4. The magnetoelectric dipole antenna according to claim 1 or 2, characterized by The metal floor is a copper plate or an aluminum plate.

5. The magnetoelectric dipole antenna according to claim 1 or 2, characterized by The dielectric substrate is a flame-retardant copper-clad plate.

6. The magnetoelectric dipole antenna according to claim 1 or 2, wherein The first feed port and the second feed port are copper column structures.

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