Dielectric resonant antenna and terminal device

Abstract

The embodiment of the application relates to the technical field of communication equipment, in particular to a dielectric resonant antenna and terminal equipment. The dielectric resonant antenna comprises a feeding part and a dielectric resonant part, and the dielectric resonant part and the feeding part are integrated parts; when the dielectric resonant part and the feeding part are connected, the plurality of dielectric resonators and the plurality of feeding units are one-to-one corresponding, so that the plurality of dielectric resonators and the plurality of feeding units can be connected through one installation action, installation precision can be ensured, and the occurrence of positioning inaccuracy caused by assembly times is reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communication equipment technology, and in particular to a dielectric resonant antenna and terminal equipment. Background Technology

[0002] As a global focus of research and development, the development of 5G technology and the formulation of 5G standards have become an industry consensus. At the 22nd meeting of ITU-RWP5D held in June 2015, the International Telecommunication Union (ITU) clarified three main application scenarios for 5G: enhanced mobile broadband, massive machine-type communications, and ultra-reliable low-latency communications.

[0003] Electromagnetic waves with wavelengths of 1–10 millimeters are called millimeter waves. They fall within the wavelength range where microwaves and far-infrared waves overlap, thus exhibiting characteristics of both spectra. Because millimeter waves possess unique characteristics of high carrier frequency and large bandwidth, they can meet the requirements of 5G's ultra-high data transmission rates, leading to the widespread application of millimeter wave antennas in 5G terminals.

[0004] In the process of implementing the prior art, the applicant found that the prior art has at least the following problems: the existing millimeter wave antenna has multiple units, which is very inconvenient to install and cannot guarantee positioning accuracy, resulting in a large difference between the assembled antenna and the antenna performance simulation results. Summary of the Invention

[0005] The embodiments of the present invention provide a dielectric resonant antenna that can ensure installation accuracy and reduce the occurrence of positioning inaccuracies due to the number of assembly attempts.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A dielectric resonant antenna is provided, comprising: a feed section including a plurality of spaced feed elements; and a dielectric resonant section including a plurality of dielectric resonators, wherein the dielectric resonant section is connected to the feed section such that the plurality of dielectric resonators correspond one-to-one with the plurality of feed elements.

[0008] In one embodiment, the plurality of the feeding units are arranged linearly, and the plurality of the dielectric resonators are arranged linearly.

[0009] In one embodiment, the plurality of feeding units include at least a first feeding unit and a second feeding unit, the first feeding unit and the second feeding unit being linearly arranged, the first feeding unit operating in a first frequency band, the second feeding unit operating in a second frequency band, and the radiated current direction of the first feeding unit being perpendicular to the radiated current direction of the second feeding unit; the plurality of dielectric resonators include at least a first dielectric resonator and a second dielectric resonator, the first dielectric resonator abutting against the first feeding unit, and the second dielectric resonator abutting against the second feeding unit.

[0010] In one embodiment, each of the dielectric resonators is provided with a first shielding hole for inserting a shielding rod to change the direction of the radiated current of the feed unit corresponding to the dielectric resonator.

[0011] In one embodiment, the plurality of feeding units include at least four third feeding units, which are arranged in a square, and the radiation current directions of the plurality of third feeding units are parallel to each other; the dielectric resonator includes at least four third dielectric resonators, which correspond one-to-one with the third feeding units, and the third dielectric resonators are equilateral triangles, with the four third dielectric resonators interconnected to define a square notch.

[0012] In one embodiment, the dielectric resonator antenna further includes a base with a mounting slot. The base abuts against the feed section, and the mounting slot is used to mount four of the third dielectric resonators.

[0013] In one embodiment, the base is further provided with a second shielding hole, which is located adjacent to the connection point between any two of the third dielectric resonators. The second shielding hole is used to insert a shielding rod to reduce the coupling effect between the two adjacent dielectric resonators.

[0014] In one embodiment, the dielectric resonator is a ceramic dielectric resonator.

[0015] In one embodiment, each of the power supply units includes: a dielectric substrate; a ground plane disposed on one side of the dielectric substrate, the ground plane having a rectangular slot and abutting against the dielectric resonator; and a microstrip line disposed on the other side of the dielectric substrate, the microstrip line being used to connect a signal device.

[0016] The present invention also provides a terminal device, characterized in that: it employs the above-mentioned dielectric resonant antenna.

[0017] The beneficial effects of the embodiments of the present invention are as follows: Unlike the prior art, in the embodiments of the present invention, both the dielectric resonator and the power supply unit are integrated components. When the dielectric resonator and the power supply unit are connected, multiple dielectric resonators correspond one-to-one with multiple power supply units. Therefore, multiple dielectric resonators and multiple power supply units can be connected with a single installation operation, ensuring installation accuracy and reducing the occurrence of positioning inaccuracies due to multiple assembly steps. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0019] Figure 1 This is a perspective view of a dielectric resonant antenna according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the first feeding unit and the second feeding unit according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the rectangular slot structure of the first and second feeding units according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of another dielectric resonant antenna according to an embodiment of the present invention;

[0023] Figure 5 The radiation current patterns of the first and second dielectric resonators without the metal rod inserted are shown in the embodiments of the present invention.

[0024] Figure 6 This is a radiation current pattern after a metal rod is inserted into the second dielectric resonator according to an embodiment of the present invention.

[0025] Figure 7 This is a radiation current pattern after a metal rod is inserted into the first dielectric resonator according to an embodiment of the present invention.

[0026] Figure 8 A parameter diagram of the first dielectric resonant antenna according to an embodiment of the present invention;

[0027] Figure 9 A parameter diagram of the second dielectric resonant antenna according to an embodiment of the present invention;

[0028] Figure 10 The parameter diagrams for the first dielectric resonant antenna and the second dielectric resonant antenna according to an embodiment of the present invention are shown.

[0029] Figure 11 The impedance bandwidth diagram is shown for a dielectric resonant antenna according to Embodiment 2 of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100, Power supply section; 110, First power supply unit; 120, Second power supply unit; 130, Third power supply unit; 150, Dielectric substrate; 160, Ground plane; 161, Rectangular slot; 170, Microstrip line;

[0032] 200, Dielectric resonator; 210, First dielectric resonator; 220, Second dielectric resonator; 230, Third dielectric resonator; 240, First shielding hole;

[0033] 300, base; 310, mounting slot; 320, second shielding hole. Detailed Implementation

[0034] 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 "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0035] 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.

[0036] Existing millimeter-wave antennas have multiple elements, which are very inconvenient to install and cannot guarantee positioning accuracy, resulting in a large difference between the assembled antenna and the antenna performance simulation results.

[0037] For example, a typical 5G terminal millimeter-wave antenna (N257 or N260) is usually a 1x4 element. If a DRA (dielectric resonant antenna) type design is adopted, then four discrete dielectric resonators are required during installation, and four bonding and fixing processes are also required. This design method results in a large error between the simulated antenna performance and the actual performance.

[0038] Please see Figure 1An embodiment of the present invention provides a dielectric resonant antenna, including a feed section 100 and a dielectric resonant section 200.

[0039] The aforementioned power supply unit 100 includes multiple power supply units spaced apart (since the power supply units are no different from the first power supply unit 110 described below, they are not labeled to avoid confusion). The number of power supply units can be flexibly set according to requirements, and this application does not impose any limitations. Multiple power supply units are interconnected to form an integrated power supply unit 100.

[0040] For example, the feeding unit of this application uses a microstrip slot antenna to feed the dielectric resonator. Each feeding unit includes a dielectric substrate 150, a ground plane 160, and a microstrip line 170.

[0041] The dielectric substrate 150 can be rectangular, thus providing sufficient length for mounting the ground plane 160 and the microstrip line 170. Alternatively, the dielectric substrate 150 can be selected based on actual needs; this application makes no restrictions.

[0042] The ground plane 160 may have a similar shape to the dielectric substrate 150. The ground plane 160 is disposed on one side of the dielectric substrate 150 and abuts against the dielectric resonator. That is, in the thickness direction of the dielectric substrate 150, the ground plane 160 is disposed between the dielectric resonator and the dielectric substrate 150. The ground plane 160 may completely cover one surface of the dielectric substrate 150.

[0043] The grounding plate 160 is provided with a rectangular gap 161. The rectangular gap 161 can be a wide gap or a narrow gap. In some embodiments, a circular gap can be used instead of a rectangular gap. The choice can be made according to the actual situation, and this application does not impose any restrictions.

[0044] The microstrip line 170 is located on the other side of the dielectric substrate 150. It can be understood that the microstrip line 170, the dielectric substrate 150, the ground plane 160, and the dielectric resonator are arranged in sequence. Specifically, the microstrip line 170 receives a signal through a signal transmitter and then couples the signal to the dielectric resonator through the rectangular gap 161.

[0045] The aforementioned dielectric resonator 200 includes multiple dielectric resonators. The number of dielectric resonators can be flexibly set according to requirements, and this application does not impose any limitations. Multiple dielectric resonators are interconnected to form an integrated dielectric resonator 200. The material of the dielectric resonators can be flexibly selected according to usage needs, and this application does not impose any restrictions. As an example rather than a limitation, the dielectric resonator is made of ceramic. When the dielectric resonators are connected to the feeding unit, a dielectric resonant antenna is formed. For example, the first dielectric resonator 210 and the first feeding unit 110 are combined to form a first dielectric antenna, and the second dielectric resonator 220 and the second feeding unit 120 are combined to form a second dielectric antenna. Further details will not be elaborated below.

[0046] Therefore, in the embodiments of this application, since the dielectric resonator 200 and the power supply 100 are both integrated parts, when the dielectric resonator 200 and the power supply 100 are connected, multiple dielectric resonators correspond one-to-one with multiple power supply units. Thus, multiple dielectric resonators can be connected to multiple power supply units with a single installation operation, which can ensure installation accuracy and reduce the occurrence of positioning inaccuracies caused by the number of assembly operations.

[0047] The technical solution of this application will now be described with reference to two more specific embodiments (which need to be combined with the above-described solution).

[0048] Example 1

[0049] Please see Figure 2 In this embodiment, multiple feed units are arranged linearly. Correspondingly, multiple dielectric resonators are arranged linearly. Furthermore, Figure 2 From left to right, the ports are numbered 1, 5, 2, 6, 3, 7, 4, and 8.

[0050] Specifically, the plurality of power supply units include at least a first power supply unit 110 and a second power supply unit 120. Figure 2 (The dashed box in the image) indicates that the first feed unit 110 and the second feed unit 120 are arranged linearly. The first feed unit 110 may operate in the same or different frequency bands as the second feed unit 120.

[0051] When the first feed unit 110 and the second feed unit 120 can operate in the same frequency band, the first feed unit 110 and the second feed unit 120 only need to maintain the same spacing. Specifically, a relatively long dielectric substrate 150 and a corresponding ground plane 160 can be selected, so that the ground plane 160 covers one surface of the dielectric substrate 150, and rectangular slots 161 are symmetrically opened on the ground plane 160. Then, microstrip lines 170 are attached to the other surface of the dielectric substrate 150 (opposite to the surface on which the ground plane 160 is installed), and the projection of the microstrip lines 170 on the ground plane 160 intersects with the above-mentioned slots.

[0052] When the operating frequency bands of the first power supply unit 110 and the second power supply unit 120 are different, the first power supply unit 110 operates in the first frequency band and the second power supply unit 120 operates in the second frequency band. For example, the first frequency band can be 39 GHz or 28 GHz.

[0053] Please refer to Figure 3 Since the first feed unit 110 and the second feed unit 120 will be coupled, it is necessary to improve the first feed unit 110 so that it can operate in the same frequency band as the second feed unit 120. The gaps of the first feed unit 110 and the second feed unit 120 are perpendicular to each other, so that the radiation current direction of the first feed unit 110 is perpendicular to the radiation current direction of the second feed unit 120, thus ensuring the isolation between the antenna ports.

[0054] The plurality of dielectric resonators includes at least a first dielectric resonator 210 and a second dielectric resonator 220 interconnected. The first dielectric resonator 210 abuts against a first feed unit 110, and the second dielectric resonator 220 abuts against a second feed unit 120. The first dielectric resonator 210 and the first feed unit 110 are size-matched, and the second dielectric resonator 220 and the second feed unit 120 are size-matched. It is understood that the sizes of the first dielectric resonator 210 and the second dielectric resonator 220 may be the same or different, and this invention does not impose any limitations.

[0055] Each dielectric resonator is provided with a first shielding hole 240, which is used to insert a shielding rod to change the direction of the radiated current of the feed unit corresponding to the dielectric resonator. For example, the first dielectric resonator 210 is provided with a plurality of first shielding holes 240, the first shielding hole 240 having a radius of 0.2 mm and a depth of 0.8 mm, and the shielding rod being a metal rod, or a plastic rod covered with a metal sheet.

[0056] Please refer to Figure 5-7 ,in, Figure 5The diagram shows the radiation current patterns of the first dielectric resonator 210 and the second dielectric resonator 220 when the metal rod is not inserted. Figure 6 This is the radiation current pattern after the metal rod is inserted into the second dielectric resonator 220. Figure 7 This is the radiation current pattern after the metal rod is inserted into the first dielectric resonator 210. After the metal rod is inserted into the first shielding hole 240, the current is mainly distributed at the four corners of the dielectric resonator, disrupting its radiation mode. This allows for selective insertion of the metal rod, achieving the purpose of switching the operating frequency. Furthermore... Figure 8-9 The parameter diagrams for the first and second dielectric antennas are shown respectively. Figure 10 This is a diagram showing the isolation parameters for each port.

[0057] Example 2

[0058] For surround compact antennas, the installation of dielectric resonators is more difficult. After installing one dielectric resonator, another dielectric resonator needs to be installed and they need to be connected to each other. This step will disturb the already installed dielectric resonators and further reduce the installation accuracy.

[0059] Please refer to Figure 4 In this embodiment, the plurality of feeding units include at least four third feeding units 130, which are arranged in a square. Specifically, the gaps between the four third feeding units 130 are located at the four corners of the square, so that the radiation current directions of the plurality of third feeding units 130 are parallel to each other.

[0060] The dielectric resonator includes at least four third dielectric resonators 230, each corresponding to a third feed unit 130. Each third dielectric resonator 230 is an equilateral triangle, and the four resonators are integrally formed, defining a square notch between them. It can be understood that one side of each dielectric resonator serves as one side of the square notch.

[0061] Optionally, the dielectric resonator antenna also includes a base 300, which is generally rectangular and abuts against the ground plane 160 of the feed section 100, thereby partially covering the ground plane 160.

[0062] The base 300 is provided with a mounting groove 310 and a second shielding hole 320.

[0063] The shape of the mounting slot 310 is the same as that of the four interconnected dielectric resonators. Simply place the dielectric resonator into the mounting slot 310 to achieve precise positioning, making the operation simple.

[0064] The second shielding hole 320 is positioned adjacent to the connection point between any two of the third dielectric resonators 230. The second shielding hole 320 is used to insert a shielding rod to reduce the coupling effect between the second and third dielectric resonators.

[0065] It is understood that by integrally molding the dielectric resonator, this application only requires sequential alignment operations to install multiple dielectric resonators on multiple corresponding feed units, which is simple to operate and has high installation accuracy.

[0066] Optionally, this embodiment also includes components such as a matching network, a chip, a phase shifter, and an amplifier. The amplifier is used to compensate for the losses of the phase shifter. The digital integrated circuit chip controls the RF chip, and the power supply chip provides power to the RF chip. The RF chip provides a signal to the mesh microstrip antenna. The matching network increases the antenna bandwidth. Figure 5 The impedance bandwidth of this third dielectric resonant antenna can be seen to be in the 26.5-40GHz frequency band.

[0067] This invention also proposes a terminal device comprising the aforementioned dielectric resonant antenna. The specific structure of this dielectric resonant antenna is described in the above embodiments. Since this invention employs all the technical solutions of all the above embodiments, it also possesses all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be repeated here. It should be noted that the preferred embodiments of this invention are given in the specification and accompanying drawings. However, this invention can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not intended as additional limitations on the content of this invention; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this invention. Furthermore, the above technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A dielectric resonant antenna, characterized in that, include: The power supply section includes a plurality of power supply units arranged at intervals, the plurality of power supply units being interconnected to form an integrated power supply section; as well as The dielectric resonator includes multiple dielectric resonators, which are interconnected to form an integrated dielectric resonator. The dielectric resonator is connected to the feed unit so that the multiple dielectric resonators correspond one-to-one with the multiple feed units. The plurality of the feeding units are arranged linearly, and the plurality of the dielectric resonators are arranged linearly; The plurality of feeding units include at least a first feeding unit and a second feeding unit, the first feeding unit and the second feeding unit are arranged linearly, the first feeding unit operates in a first frequency band, the second feeding unit operates in a second frequency band, and the radiation current direction of the first feeding unit is perpendicular to the radiation current direction of the second feeding unit, and the gap corresponding to the first feeding unit is perpendicular to the gap of the second feeding unit. The plurality of dielectric resonators include at least a first dielectric resonator and a second dielectric resonator, wherein the first dielectric resonator abuts against the first feed unit and the second dielectric resonator abuts against the second feed unit; Each of the dielectric resonators is provided with a first shielding hole, which is used to insert a shielding rod to change the direction of the radiated current of the feed unit corresponding to the dielectric resonator.

2. The dielectric resonant antenna according to claim 1, characterized in that: The dielectric resonator is a ceramic dielectric resonator.

3. The dielectric resonant antenna according to any one of claims 1-2: characterized in that, Each of the power supply units includes: Dielectric substrate; A ground plane, disposed on one side of the dielectric substrate, the ground plane having a rectangular slot, the ground plane abutting against the dielectric resonator; and A microstrip line is located on the other side of the dielectric substrate, and the microstrip line is used to connect a signal device.

4. A dielectric resonant antenna, characterized in that, include: The power supply section includes a plurality of power supply units arranged at intervals, the plurality of power supply units being interconnected to form an integrated power supply section; as well as The dielectric resonator includes a plurality of dielectric resonators, which are interconnected to form an integrated dielectric resonator. The dielectric resonator is connected to the feed section so that the plurality of dielectric resonators correspond one-to-one with the plurality of feed units. The plurality of feeding units include at least four third feeding units, which are arranged in a square, and the radiation current directions of the plurality of third feeding units are parallel to each other; The dielectric resonator includes at least four third dielectric resonators, each corresponding to a third feed unit. Each third dielectric resonator is an equilateral triangle, and the four third dielectric resonators are interconnected to define a square notch. The dielectric resonator antenna also includes a base with a mounting slot. The base abuts against the feed section, and the mounting slot is used to mount four of the third dielectric resonators. The base is also provided with a second shielding hole, which is located adjacent to the connection point between any two of the third dielectric resonators. The second shielding hole is used to insert a shielding rod to reduce the coupling effect between the second and third dielectric resonators.

5. The dielectric resonant antenna according to claim 4, characterized in that: The dielectric resonator is a ceramic dielectric resonator.

6. The dielectric resonant antenna according to any one of claims 4-5: characterized in that, Each of the power supply units includes: Dielectric substrate; A ground plane, disposed on one side of the dielectric substrate, the ground plane having a rectangular slot, the ground plane abutting against the dielectric resonator; and A microstrip line is located on the other side of the dielectric substrate, and the microstrip line is used to connect a signal device.

7. A terminal device, characterized in that: The dielectric resonant antenna described in any one of claims 1-6 is used.

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