A high-performance dipole array antenna module

Abstract

The application discloses a high-performance dipole array antenna module, which comprises a dielectric substrate, one side of the dielectric substrate is provided with a dipole unit array, and the other side of the dielectric substrate is provided with a transition structure; the transition structure comprises at least one right-angled trapezoidal body, the bottom surface of the transition structure is coplanar with the bottom surface of the dielectric substrate, and the height of the transition structure gradually decreases from the side close to the dielectric substrate to the side far from the dielectric substrate; the height of the side edge of the side of the right-angled trapezoidal body far from the dielectric substrate is h n , λ g is the working wavelength, and DK is the dielectric constant of the right-angled trapezoidal body. The surface wave bound on the dielectric substrate and propagating on the dielectric substrate is creatively utilized to improve the antenna gain, so that the performance of the dipole array antenna module is effectively improved; the dipole array antenna module has the advantages of simple structure, convenient processing and manufacturing, and can be obtained by improving the existing dipole array antenna module, and is convenient to popularize and apply.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and in particular to a high-performance dipole array antenna module. Background Technology

[0002] According to 3GPP TS38.101-2 5G Terminal Radio Frequency Technical Specification and TR38.817 Terminal Radio Frequency Technical Report, the 5G mmWave frequency bands include N257 (26.5-29.5GHz), N258 (24.25-27.25GHz), N260 (37-40GHz), N261 (27.5-28.35GHz), and the newly added N259 (39.5-43GHz).

[0003] Figure 1 This paper illustrates a prior art dipole array antenna module. A dipole array antenna is an end-fire antenna that has advantages such as wide beamwidth and small size, but its disadvantage is low gain.

[0004] Surface waves are a type of bound wave. Once a discontinuity occurs in the dielectric substrate, the bound wave will radiate into free space. If this phenomenon can be fully utilized, it will be beneficial to improve the gain of the antenna module. Summary of the Invention

[0005] The main objective of this invention is to propose a high-performance dipole array antenna module, which aims to solve the problem of low gain in existing dipole array antenna modules.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a high-performance dipole array antenna module, comprising a dielectric substrate, a dipole element array on one side of the dielectric substrate, and a transition structure on the other side of the dielectric substrate. The transition structure includes at least one right-angled trapezoidal body, the bottom surface of the transition structure is coplanar with the bottom surface of the dielectric substrate, and the height of the transition structure gradually decreases from the side closer to the dielectric substrate to the side farther away from the dielectric substrate; the height of the side of the right-angled trapezoidal body away from the dielectric substrate is h. n , λ g Where λ is the operating wavelength, and DK is the dielectric constant of the right trapezoid.

[0007] The beneficial effects of this invention are as follows: This dipole array antenna module creatively utilizes surface waves that are confined to and propagate on a dielectric substrate to improve antenna gain, thereby effectively enhancing the performance of the dipole array antenna module. Furthermore, this dipole array antenna module has a simple structure, is easy to process and manufacture, and can be obtained by improving existing dipole array antenna modules, making it convenient for widespread application. Attached Figure Description

[0008] 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of a dipole array antenna module in the prior art;

[0010] Figure 2 This is a schematic diagram of the structure of the high-performance dipole array antenna module according to Embodiment 1 of the present invention;

[0011] Figure 3 This is a cross-sectional view of the high-performance dipole array antenna module according to Embodiment 1 of the present invention;

[0012] Figure 4 This is a comparison chart of the gain results from the simulation test in Embodiment 1 of the present invention;

[0013] Figure 5 This is a schematic diagram of the high-performance dipole array antenna module according to Embodiment 2 of the present invention;

[0014] Figure 6 This is a cross-sectional view of the high-performance dipole array antenna module according to Embodiment 2 of the present invention;

[0015] Figure 7 This is a comparison chart of S-parameters of the control experiment results in Embodiment 2 of the present invention;

[0016] Figure 8 This is the orientation diagram of the control group in the control experiment of Embodiment 2 of the present invention;

[0017] Figure 9 This is the orientation diagram of experimental group two in the control experiment of embodiment two of the present invention;

[0018] Figure 10 This is the orientation diagram of experimental group one in the control experiment of Embodiment 2 of the present invention.

[0019] Explanation of icon numbers:

[0020] 1. Dielectric substrate;

[0021] 2. Dipole unit array;

[0022] 3. Transition structure;

[0023] 31. Right-angled trapezoid. Detailed Implementation

[0024] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0025] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of the present invention involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0028] Furthermore, if the meaning of "and / or" appears throughout the text, it refers to three parallel solutions. For example, "and / or" includes solution 1, solution 2, and solution 3, which simultaneously satisfy the above conditions. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Example 1

[0031] Please refer to Figures 2 to 4 Embodiment 1 of the present invention is as follows: Figure 2 and Figure 3As shown, a high-performance dipole array antenna module includes a dielectric substrate 1 with a ground layer on its bottom surface. A dipole element array 2 is located on one side of the dielectric substrate 1. In this embodiment, the dipole element array 2 has four dipole antenna elements, meaning it is a 1x4 array. Furthermore, since the dipole element array 2 used in this embodiment is the same as that used in existing dipole array antenna modules, and the inventive point of this invention is not the dipole element array 2 itself, the specific structure of the dipole antenna elements will not be described here.

[0032] The dielectric substrate 1 has a transition structure 3 on its other side. The two end faces of the transition structure 3 are flush with the two end faces of the dielectric substrate 1. The transition structure 3 includes at least one right-angled trapezoidal body 31. The bottom surface of the transition structure 3 is coplanar with the bottom surface of the dielectric substrate 1. The height of the transition structure 3 gradually decreases from the side closer to the dielectric substrate 1 to the side farther away from the dielectric substrate 1. The height of the side of the right-angled trapezoidal body 31 on the side farther away from the dielectric substrate 1 is h. n , λ g Where λ is the operating wavelength, and DK is the dielectric constant of the right trapezoid.

[0033] When viewed from the positive Z-axis direction to the negative Z-axis direction, the dielectric substrate 1 and the transition structure 3 can be considered as transmission lines. For the right trapezoid 31, the impedance of the surface wave changes continuously with the height of the right trapezoid 31. When the height of the right trapezoid 31 reaches... At this resonant point, surface waves can be effectively converted into radiated space waves, thereby improving the gain of the dipole array antenna module near this resonant point. If the height of the transition structure 3 remains unchanged (or can be considered as if the transition structure 3 does not exist), then the surface waves will be confined within the dielectric substrate 1 and cannot be converted into radiated space waves. Therefore, the dipole array antenna module cannot achieve a gain improvement.

[0034] Optionally, the dielectric substrate 1 and at least one right-angled trapezoid 31 are integrally formed. In this embodiment, the number of right-angled trapezoids 31 is one, and the transition structure 3 is a milled structure formed by milling the dielectric substrate 1. As an extension, when the number of right-angled trapezoids 31 in the transition structure 3 is multiple, each right-angled trapezoid 31 and the dielectric substrate 1 can be integrally formed, that is, during the milling process, multiple right-angled trapezoids 31 are directly milled onto the dielectric substrate 1.

[0035] In other embodiments, the number of right-angled trapezoidal bodies 31 is at least two, and at least one of the right-angled trapezoidal bodies 31 is a separate structure from the dielectric substrate 1. That is, before the dipole array antenna module is assembled, at least one of the right-angled trapezoidal bodies 31 is an independent component detached from the dielectric substrate 1. The dielectric constant of this independent component can be the same as or different from that of the dielectric substrate 1. When there are multiple independent components, at least two of the independent components have the same or different dielectric constants.

[0036] It is easy to understand that when there are multiple right-angled trapezoids 31, adjacent right-angled trapezoids 31 are in contact with each other. Among the two adjacent right-angled trapezoids 31, the height of the side of the right-angled trapezoid 31 away from the dielectric substrate 1 that is closer to the dielectric substrate 1 is the same as the height of the side of the right-angled trapezoid 31 that is closer to the dielectric substrate 1 that is away from the dielectric substrate 1. That is to say, there is no obvious height difference at the junction of two adjacent right-angled trapezoids 31.

[0037] Next, we will conduct a simulation test comparison:

[0038] Experimental group: The high-performance dipole array antenna module of this embodiment;

[0039] Control group: Figure 1 The dipole array antenna module shown;

[0040] The only difference between the experimental group and the control group is that the experimental group has the transition structure 3, wherein the transition structure 3 is a right trapezoid 31.

[0041] Gain comparison between experimental and control groups Figure 4 As shown, from Figure 4 As can be seen, the gain of the experimental group is significantly higher than that of the control group. This shows that the setting of transition structure 3 is beneficial to improving the gain of the dipole array antenna module, thereby improving the performance of the dipole array antenna module.

[0042] Example 2

[0043] Please refer to Figures 5 to 10 The second embodiment of the present invention is a further improvement on the first embodiment. The difference between the second and the first embodiment is that the transition structure 3 is a separate structure that is separately set from the dielectric substrate 1. After the dipole array antenna module is assembled, the transition structure 3 contacts the dielectric substrate 1.

[0044] like Figure 5 and Figure 6As shown, there are multiple right-angled trapezoids 31. Two adjacent right-angled trapezoids 31 are in contact with each other. Among two adjacent right-angled trapezoids 31, the height of the side of the right-angled trapezoid 31 away from the dielectric substrate 1 that is close to the dielectric substrate 1 is the same as the height of the side of the right-angled trapezoid 31 that is close to the dielectric substrate 1 that is away from the dielectric substrate 1.

[0045] In this embodiment, there are three right-angled trapezoids 31, and any two right-angled trapezoids 31 are independent structures. All three right-angled trapezoids 31 have the same dielectric constant, which is equal to the dielectric constant of the dielectric substrate 1. In other embodiments, at least two of the right-angled trapezoids 31 may have the same or different dielectric constants.

[0046] Based on the disclosure of this embodiment, a comparative experiment was conducted:

[0047] Control group: Figure 1 The dipole array antenna module shown;

[0048] Experimental Group 1: The high-performance dipole array antenna module of this embodiment (loaded with three right-angled trapezoids 31, referred to as loaded with three);

[0049] Experimental Group 2: It has a right-angled trapezoid 31 as a transition structure 3 (load a right-angled trapezoid 31, or simply load one), which is equivalent to the high-performance dipole array antenna module of Example 1;

[0050] In both Experiment 1 and Experiment 2, the dielectric constant DK of the right-angled trapezoid 31 and the dielectric substrate 1 is 12. 24 GHz is selected as the low-frequency center point, 30 GHz as the mid-frequency center point, and 38 GHz as the high-frequency center point. Therefore, in Experiment 2, the height of the side of the right-angled trapezoid 31 furthest from the dielectric substrate 1 is... In Experiment 1, the height of the side of the right trapezoid 31 closest to the dielectric substrate 1 on the side furthest from the dielectric substrate 1 is... The height of the side of the right trapezoid 31 located in the middle, away from the dielectric substrate 1, is The height of the side of the right trapezoid 31 away from the dielectric substrate 1 is

[0051] The S-parameter plot of the control experiment is shown below. Figure 7 As shown, from Figure 7It can be seen that the bandwidth of experimental group 1 is wider than that of experimental group 2, and the bandwidth of experimental group 2 is wider than that of the control group. This indicates that loading right trapezoidal bodies 31 can increase the bandwidth of the dipole array antenna module, and the more right trapezoidal bodies 31 are loaded, the greater the bandwidth increase.

[0052] Figure 8 This is the orientation pattern for the control group. Figure 8 The left-hand radiation pattern is the E-plane radiation pattern, and the right-hand radiation pattern is the 3D radiation pattern. Figure 8 The radiation pattern on the E-plane shows that the radiation of the control group is in the end-firing direction and has no deflection, that is, it deviates from the y-axis by 0 degrees.

[0053] Figure 9 This is the radiation pattern for experimental group two. Figure 9 The left-hand orientation diagram is the E-plane orientation diagram, and the right-hand orientation diagram is the 3D orientation diagram. Figure 9 The radiation pattern on the E-plane shows that the radiation direction of experimental group two deviates from the y-axis by 14 degrees.

[0054] Figure 10 This is the radiation pattern for experimental group one. Figure 10 The left-hand orientation diagram is the E-plane orientation diagram, and the right-hand orientation diagram is the 3D orientation diagram. Figure 10 The E-plane radiation pattern shows that the radiation direction of experimental group two deviates from the y-axis by 26 degrees.

[0055] As can be seen, the transition structure 3 can control the beam deflection. In other words, this high-performance dipole array antenna module is a technology that can control the beam direction without loading external active circuits.

[0056] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A high-performance dipole array antenna module, characterized in that: The device includes a dielectric substrate, one side of which has a dipole unit array, and the other side of which has a transition structure. The transition structure includes at least one right-angled trapezoidal body, the bottom surface of which is coplanar with the bottom surface of the dielectric substrate, and the height of the transition structure gradually decreases from the side closer to the dielectric substrate to the side farther away from the dielectric substrate. The height of the side of the right-angled trapezoidal body away from the dielectric substrate is h. n , λ g Where λ is the operating wavelength, and DK is the dielectric constant of the right trapezoid.

2. The high-performance dipole array antenna module according to claim 1, characterized in that: The dielectric substrate and at least one of the right-angled trapezoids are integrally formed into a single structure.

3. The high-performance dipole array antenna module according to claim 2, characterized in that: The transition structure is a milled structure formed by milling.

4. The high-performance dipole array antenna module according to claim 2, characterized in that: The number of right-angled trapezoids is at least two, and at least one of the right-angled trapezoids is a separate structure that is separately configured from the dielectric substrate.

5. The high-performance dipole array antenna module according to claim 1, characterized in that: The transition structure is a separate structure that is separately disposed from the dielectric substrate, and the transition structure is in contact with the dielectric substrate.

6. The high-performance dipole array antenna module according to claim 1, characterized in that: There are multiple right-angled trapezoids, and two adjacent right-angled trapezoids are in contact with each other. Among the two adjacent right-angled trapezoids, the height of the side of the right-angled trapezoid away from the dielectric substrate on the side closer to the dielectric substrate is the same as the height of the side of the right-angled trapezoid closer to the dielectric substrate on the side away from the dielectric substrate.

7. The high-performance dipole array antenna module according to claim 1, characterized in that: The number of right-angled trapezoids is three.

8. The high-performance dipole array antenna module according to claim 7, characterized in that: At least two of the right trapezoids have the same or different dielectric constants.

9. The high-performance dipole array antenna module according to claim 1, characterized in that: The dipole element array has four dipole antenna elements.

10. The high-performance dipole array antenna module according to claim 1, characterized in that: The two end faces of the transition structure are flush with the two end faces of the dielectric substrate, respectively.

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