Resonant antenna, communication device, and method of manufacturing resonant antenna

Abstract

The embodiment of the present application relates to the technical field of wireless communication, and discloses a resonant antenna, which comprises a dielectric substrate, a plurality of resonators and a metal piece; the dielectric resonator is in the shape of a semi-cylindrical shape, and the semi-circular section of the dielectric resonator comprises an upright plane, a transverse section and an inclined section; the metal piece comprises a bottom wall and a side frame, one end of the side frame is arranged on the bottom wall, the upright plane of the plurality of dielectric resonators is fixed on the side frame, and the bottom wall is arranged on the dielectric substrate to fix the plurality of dielectric resonators on the dielectric substrate. Through the above mode, the magnetic field of each dielectric resonator can be overlapped, and the resonant antenna pattern synthesis is facilitated.

Description

Technical Field

[0001] This invention relates to the field of wireless communication, and in particular to a resonant antenna, a communication device, and a method for manufacturing the resonant antenna. Background Technology

[0002] A dielectric resonant antenna is a type of resonant antenna whose radiating part is made of a dielectric material. Since there are no surface waves affecting its surface, ohmic loss is extremely low, ensuring very high efficiency in high-frequency applications. Furthermore, dielectric resonators offer advantages such as high design freedom, ease of excitation, diverse material options, and convenient fabrication, perfectly aligning with the development trends of communication applications. Therefore, wide-beam dielectric resonator antennas have high practical value. 5G antennas are typically dielectric resonant antennas, and to ensure optimal antenna performance, they usually incorporate four resonators.

[0003] In the implementation of this invention, the inventors discovered that currently, commercially available 5G antennas generally adopt a 1*4 resonant design, that is, four discrete cylindrical dielectric resonators are mounted on a dielectric substrate. However, because the resonators are cylindrical, the beams of each resonator are tilted due to the influence of the PCB ground and vertical ground. Figure 1 As a result, the magnetic fields of the four resonators cannot overlap well, affecting the synthesis of the resonant antenna pattern. Summary of the Invention

[0004] The main technical problem solved by the embodiments of the present invention is to provide a resonant antenna. By cutting off a corner of the dielectric resonator, the beam of the resonant antenna can be tilted. The chamfers of each dielectric resonator point in different directions, which can make the magnetic fields of each dielectric resonator overlap, thus facilitating the synthesis of the resonant antenna pattern.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this embodiment of the invention is: providing a resonant antenna, including: a dielectric substrate, a plurality of resonators, and a metal component; the dielectric resonator is semi-cylindrical in shape, and the semi-circular cross-section of the dielectric resonator includes a vertical plane, a horizontal plane, and an inclined plane; the metal component includes a bottom wall and a side frame, one end of the side frame is disposed on the bottom wall, the vertical planes of the plurality of dielectric resonators are fixed to the side frame, and the bottom wall is disposed on the dielectric substrate to fix the plurality of dielectric resonators to the dielectric substrate.

[0006] Optionally, the side frame includes several side walls, one end of which is disposed on the bottom wall, and the several side walls are connected end to end in sequence, and the vertical plane of the dielectric resonator is connected to one of the side walls.

[0007] Optionally, the number of sidewalls and dielectric resonators is four, the side frame is square in shape, and the four dielectric resonators surround the side frame.

[0008] Optionally, the dielectric substrate is provided with a plurality of openings; the resonant antenna further includes a plurality of feed sections, which are disposed on the surface of the dielectric substrate away from the metal component; the dielectric resonator is provided with a connection section, and the connection section of the dielectric resonator passes through a hole and is connected to a feed section.

[0009] Optionally, the dielectric constant of the dielectric resonator is 21.

[0010] Optionally, the radius of the dielectric resonator is 2.8 mm, and / or the height of the dielectric resonator is 1.5 mm.

[0011] To solve the above-mentioned technical problems, another technical solution adopted in the embodiments of the present invention is to provide a communication device, including the resonant antenna described above.

[0012] To solve the above-mentioned technical problems, another technical solution adopted in this embodiment of the invention is: providing a method for manufacturing a resonant antenna, comprising providing a dielectric substrate, a plurality of dielectric resonators and a metal component, wherein the dielectric resonators are cylindrical in shape, the metal component includes a bottom wall and a side frame, one end of the side frame is disposed on the bottom wall; cutting the plurality of dielectric resonators in half to obtain a plurality of secondary dielectric resonators, wherein the secondary dielectric resonators are semi-cylindrical in shape; chamfering the semi-circular cut surface of the secondary dielectric resonators to obtain a plurality of dielectric resonators, wherein the semi-circular cut surface of the dielectric resonators includes a vertical plane and an inclined plane, connecting the vertical plane of the dielectric resonators to the side frame of the metal component; fixing the bottom wall of the metal component to the dielectric substrate to obtain the resonant antenna.

[0013] Optionally, the dielectric substrate has a plurality of openings, and the dielectric resonator has a connecting portion; the step of fixing the bottom wall of the metal component to the dielectric substrate to obtain the resonant antenna further includes: providing a plurality of feed portions, and disposing the plurality of feed portions on the surface of the dielectric substrate away from the metal component; fixing the bottom wall of the metal component to the dielectric substrate, and connecting the connecting portion of one of the dielectric resonators to one of the feed portions respectively to obtain the resonant antenna. 。

[0014] Optionally, the step of fixing the bottom wall of the metal part to the dielectric substrate further includes: fixing the dielectric resonator to the dielectric substrate by bonding or welding.

[0015] This invention provides a resonant antenna, including a dielectric substrate, a plurality of dielectric resonators, and a metal component. The dielectric resonators are semi-cylindrical in shape, and the semi-circular cross-section of the dielectric resonator includes a vertical plane and an inclined cross-section. The metal component includes a bottom wall and a side frame, one end of the side frame is disposed on the bottom wall, the vertical planes of the plurality of dielectric resonators are fixed to the side frame, and the bottom wall is disposed on the dielectric substrate to fix the plurality of dielectric resonators to the dielectric substrate. The semi-circular cross-sections of the plurality of dielectric resonators are made into horizontal and vertical planes and inclined cross-sections, and the vertical planes of the plurality of dielectric resonators are fixed to the side frame of the metal component. The inclined cross-sections of each dielectric resonator point differently, which can make the magnetic fields of each dielectric resonator overlap, facilitating the synthesis of the resonant antenna pattern. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in specific embodiments of the present invention or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the prior art structure of the resonant antenna according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the resonant antenna according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the resonant antenna from another perspective in an embodiment of the present invention;

[0020] Figure 4 This is an exploded view of the resonant antenna according to an embodiment of the present invention;

[0021] Figure 5 This is a rendering of the resonant antenna according to an embodiment of the present invention;

[0022] Figure 6 This is a flowchart illustrating the fabrication of a resonant antenna according to an embodiment of the present invention;

[0023] Figure 7 This is a further flowchart of step S105 of the embodiment of the present invention for manufacturing a resonant antenna.

[0024] Figure descriptions: 100, resonant antenna; 10, dielectric substrate; 101, opening; 20, dielectric resonator; 201, semi-circular section; 211, vertical section; 212, inclined section; 213, cross section; 30, metal part; 301, side frame; 321, side wall; 40, feed section. Detailed Implementation

[0025] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0027] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Please see Figures 2 to 4 The resonant antenna 100 includes a dielectric substrate 10, a plurality of dielectric resonators 20, a metal component 30, and a plurality of feed sections 40. The dielectric resonators 20 are semi-cylindrical in shape, and the semi-circular cross-section 201 of each resonator includes a vertical cross-section 211, a horizontal cross-section 213, and an inclined cross-section 212. The vertical plane of each dielectric resonator 20 is fixed to the metal component 30. The feed sections 40 are disposed on the surface of the dielectric substrate 10 facing away from the metal component 30. The inclined cross-section 212 on the dielectric resonators 20 can change the direction of the radiated beam of the resonant antenna 100, causing the magnetic fields of the dielectric resonators 20 to coincide, thus reducing the alignment error of the antenna pattern. By cutting the dielectric resonators 20 into semi-cylindrical shapes, the volume of the dielectric resonators 20 can be reduced without affecting signal transmission and reception, thereby reducing the overall size of the resonant antenna 100. In some preferred embodiments, the resonant antenna 100 is an integrated design with a compact structure.

[0029] In some preferred embodiments, the dielectric resonator 20 has a dielectric constant of 21. The radius of the dielectric resonator 20 is 2.8 mm, and / or the height of the dielectric resonator 20 is 1.5 mm. Based on these parameters, the resonant antenna 100 can be used in the 5G millimeter-wave N2587 band.

[0030] Please see Figure 5 , Figure 5 The S-parameters of the resonant antenna 100 of this invention are 27GHz-32GHz, which basically covers the 3GPP specification N257 (26.5GHz-29.5GHz).

[0031] Please continue reading. Figure 4 The dielectric substrate 10 is provided with a plurality of openings 101; the dielectric resonator 20 is provided with a connection portion (not shown in the figure), and the connection portion (not shown in the figure) of the dielectric resonator 20 passes through one of the openings 101 and is connected to a power supply portion 40. The dielectric resonator 20 and the power supply portion 40 form an electrical signal transmission with the dielectric substrate 10.

[0032] Please continue reading. Figure 4 The metal component 30 further includes a bottom wall (not shown) and a side frame 301. One end of the side frame 301 is disposed on the bottom wall (not shown). The vertical planes of the plurality of dielectric resonators 20 are fixed to the side frame 301. The bottom wall (not shown) is disposed on the dielectric substrate 10 to fix the plurality of dielectric resonators 20 to the dielectric substrate 10. The side frame 301 includes a plurality of side walls 321. One end of the plurality of side walls 321 is disposed on the bottom wall (not shown), and the plurality of side walls 321 are connected end to end in sequence. The vertical plane of one dielectric resonator 20 is connected to one side wall 321. The vertical plane of the dielectric resonator 20 is plated with a metal layer. The metal component 30 is a plastic rectangular structure with metal plated on five sides. The bottom of the metal component 30 is welded to the metal layer of the dielectric substrate 10 and to the vertical plane of the dielectric resonator 20 to complete the alignment and fixation.

[0033] In some preferred embodiments, the number of sidewalls 321 and dielectric resonators 20 are both four, the side frame 301 is square in shape, and the four dielectric resonators 20 surround the side frame 301.

[0034] This invention provides a resonant antenna 100, including a dielectric substrate 10, a plurality of dielectric resonators 20, and a metal component 30. The dielectric resonators 20 are semi-cylindrical in shape, and the semi-circular cross-section 201 of the dielectric resonator 20 includes a vertical plane and an inclined cross-section 212. The metal component 30 includes a bottom wall (not shown) and a side frame 301. One end of the side frame 301 is disposed on the bottom wall (not shown). The vertical planes of the plurality of dielectric resonators 20 are fixed to the side frame 301. The bottom wall (not shown) is disposed on the dielectric substrate 10 to fix the plurality of dielectric resonators 20 to the dielectric substrate 10. The semi-circular cross-section 201 of the plurality of dielectric resonators 20 is made into a horizontal and vertical plane and an inclined cross-section 212. The vertical planes of the plurality of dielectric resonators 20 are fixed to the side frame 301 of the metal component 30. The inclined cross-sections of each dielectric resonator 20 point in different directions, which can make the magnetic fields of each dielectric resonator 20 overlap, facilitating the pattern synthesis of the resonant antenna 100.

[0035] This application also provides a communication device, including the resonant antenna 100 described above. For the specific structure and function of the antenna, please refer to the above embodiments, which will not be repeated here.

[0036] This application also provides an embodiment of a method for manufacturing a resonant antenna 100. Please refer to [link to embodiment]. Figure 6 The method for manufacturing the resonant antenna 100 is used to manufacture the aforementioned resonant antenna 100, wherein the method for manufacturing the resonant antenna 100 includes:

[0037] Step S101: Provide a dielectric substrate 10, a plurality of dielectric resonators and a metal component 30, wherein the dielectric resonator 20 is cylindrical in shape, and the metal component 30 includes a bottom wall (not shown) and a side frame 301, one end of the side frame 301 being disposed on the bottom wall;

[0038] Step S102: Cut the plurality of dielectric resonators in half to obtain a plurality of secondary dielectric resonators 20, wherein the secondary dielectric resonators 20 are semi-cylindrical in shape.

[0039] Step S103: Chamfer the semicircular cut surface 201 of the secondary dielectric resonator 20 to obtain a plurality of dielectric resonators 20, wherein the semicircular cut surface 201 of the dielectric resonator 20 includes a vertical plane and an inclined plane.

[0040] If a standard 2x2 resonant antenna 100 were used, there would be installation and feed position alignment issues. Therefore, a four-cylinder resonant antenna 100 with a dielectric constant of 21, a radius of 2.8 mm, and a height of 1.5 mm would be developed. Based on the electromagnetic field mirror principle, the cylindrical dielectric resonator 20 can be cut in half to obtain a semi-cylinder dielectric resonator 20. Due to the influence of the dielectric substrate 10 and the vertical ground, the resonant antenna 100 will become a tilted beam. Figure 1 Since the resonant antenna 100 pattern cannot be synthesized well, the semi-cylindrical shape of the dielectric resonator 20 is cut into an inclined section 212.

[0041] Step S104: Connect the vertical plane of the dielectric resonator 20 to the side frame 301 of the metal part 30;

[0042] Step S105: Fix the bottom wall (not shown) of the metal part 30 to the dielectric substrate 10 to obtain the resonant antenna 100.

[0043] Four dielectric resonators 20 surround the side frame 301 of the metal part 30. The dielectric substrate 10 is welded or bonded to the bottom of the metal part 30. The side wall 321 of the metal part 30 is welded to the vertical plane of the dielectric resonator 20 to complete the alignment and fixation.

[0044] Please see Figure 7 The dielectric substrate 10 is provided with a plurality of openings 101, and the dielectric resonator 20 is provided with a connection portion 202;

[0045] Step S105 also includes:

[0046] Step S1051: Provide a plurality of power supply sections 40, and dispose of the plurality of power supply sections 40 on the surface of the dielectric substrate 10 away from the metal member 30;

[0047] Step S1052: Pass the connection portion 202 of the dielectric resonator 20 through the opening 101;

[0048] Step S1053: Fix the bottom wall (not shown) of the metal part 30 to the dielectric substrate 10, and connect the connection part 202 of the dielectric resonator 20 to the feed part 40 to obtain the resonant antenna 100.

[0049] Furthermore, the dielectric resonator 20 is fixed to the dielectric substrate 10 by bonding or welding.

[0050] This invention provides a method for fabricating a resonant antenna 100, comprising providing a dielectric substrate 10, a plurality of dielectric resonators 20, and a metal component 30, wherein the dielectric resonators 20 are cylindrical in shape, and the metal component 30 includes a bottom wall (not shown) and a side frame 301, one end of the side frame 301 being disposed on the bottom wall (not shown); then, the plurality of dielectric resonators 20 are cut in half to obtain a plurality of secondary dielectric resonators 20, wherein the secondary dielectric resonators 20 are semi-cylindrical in shape; the semi-circular cut surface 201 of the secondary dielectric resonators 20 is chamfered to obtain a plurality of dielectric resonators 20, wherein the semi-circular cut surface 201 of the dielectric resonators 20 includes a vertical plane and an inclined plane; finally, the vertical plane of the dielectric resonators 20 is connected to the side frame 301 of the metal component 30; the bottom wall (not shown) of the metal component 30 is fixed to the dielectric substrate 10 to obtain the resonant antenna 100. The above-described method for manufacturing the resonant antenna 100 allows the magnetic fields of each dielectric resonator 20 to overlap, facilitating the synthesis of the resonant antenna 100's radiation pattern.

[0051] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A resonant antenna, characterized in that, include: Dielectric substrate; Several dielectric resonators, wherein the shape of the dielectric resonators is semi-cylindrical, and the semi-cylindrical cross-section of the dielectric resonator includes a vertical plane, a horizontal cross-section and an inclined cross-section, and the inclined cross-sections of each dielectric resonator point in different directions; A metal component, including a bottom wall and a side frame, one end of the side frame is disposed on the bottom wall, the vertical plane of the plurality of dielectric resonators is fixed to the side frame, and the bottom wall is disposed on the dielectric substrate to fix the plurality of dielectric resonators to the dielectric substrate. The side frame includes several side walls, one end of which is disposed on the bottom wall, and the several side walls are connected end to end in sequence, and the vertical plane of the dielectric resonator is connected to one of the side walls. The sidewall and the dielectric resonator are both four in number, the side frame is square in shape, and the four dielectric resonators surround the side frame.

2. The resonant antenna according to claim 1, characterized in that, The dielectric substrate is provided with a plurality of openings; The resonant antenna further includes a plurality of feed sections, which are disposed on the surface of the dielectric substrate away from the metal component; The dielectric resonator is provided with a connecting part, and the connecting part of the dielectric resonator passes through the opening and is connected to the feeding part.

3. The resonant antenna according to claim 1, characterized in that, The dielectric constant of the dielectric resonator is 21.

4. The resonant antenna according to claim 1, characterized in that, The radius of the dielectric resonator is 2.8 mm, and / or the height of the dielectric resonator is 1.5 mm.

5. A communication device, characterized in that, Including the resonant antenna as described in any one of claims 1-4.

6. A method for manufacturing a resonant antenna as described in any one of claims 1-5, characterized in that, include: A dielectric substrate, several dielectric resonators, and a metal component are provided. The dielectric resonator is cylindrical in shape, and the metal component includes a bottom wall and a side frame, with one end of the side frame disposed on the bottom wall. The plurality of dielectric resonators are cut in half to obtain a plurality of secondary dielectric resonators, wherein the shape of the secondary dielectric resonators is semi-cylinder; The semicircular cross-section of the secondary dielectric resonator is chamfered to obtain several dielectric resonators, wherein the semicircular cross-section of the dielectric resonator includes a vertical plane and an inclined plane; The vertical plane of the dielectric resonator is connected to the side frame of the metal component; The bottom wall of the metal part is fixed to the dielectric substrate to obtain the resonant antenna.

7. The method according to claim 6, characterized in that, The dielectric substrate is provided with a plurality of openings, and the dielectric resonator is provided with a connection portion; The step of fixing the bottom wall of the metal part to the dielectric substrate to obtain the resonant antenna further includes: A plurality of power supply sections are provided, and the plurality of power supply sections are disposed on the surface of the dielectric substrate opposite to the metal component; The connection portion of the dielectric resonator is passed through the opening; The bottom wall of the metal part is fixed to the dielectric substrate, and the connection part of one of the dielectric resonators is connected to one of the feed parts to obtain the resonant antenna.

8. The method according to claim 7, characterized in that, The step of fixing the bottom wall of the metal component to the dielectric substrate further includes: The dielectric resonator is fixed to the dielectric substrate by bonding or welding.

Images