Bow tie type antenna

Abstract

The utility model relates to a bow-tie type antenna, which comprises a grounding panel, a bottom layer medium and a top layer medium, a bow-tie-shaped radiation patch is arranged on the top layer medium, an antenna main body is arranged below the radiation patch, a coaxial feed end is arranged on the antenna main body, and coupling through holes are formed in the grounding panel and the bottom layer medium. A coaxial line of the coaxial feed end sequentially penetrates through the coupling through holes of the bottom layer medium and the grounding panel to be connected with the microstrip line, and the microstrip line is connected with the antenna body. According to the bow-tie-type antenna, the top layer medium, the grounding panel and the bottom layer medium form a multi-layer medium stacked structure, an aperture coupling feeding mode is selected in the feeding mode, the bandwidth of the bow-tie-type antenna is expanded, the gain of the bow-tie-type antenna is improved, the bow-tie-type antenna can cover a 3.1-3.6 GHz communication frequency band, and the communication efficiency of the bow-tie-type antenna is improved. The problem that an existing antenna structure cannot cover all 5G communication frequency bands is solved.

Description

Technical Field

[0001] This application relates to the technical field of antennas, and particularly to a bow-tie antenna. Background Art

[0002] With the rise of 5G technology, the demand for broadband antennas that can cover the 5G frequency band is increasing. The working frequency band of existing antennas cannot be fully covered between 3.1 GHz and 3.6 GHz. Currently, 5G communication of antennas includes multiple communication frequency bands. One type of antenna for a communication frequency band is the 3.3 GHz band from 3300 MHz to 3400 MHz, another type of antenna for a communication frequency band is the 3.4 GHz band from 3400 MHz to 3500 MHz, and yet another type of antenna for a communication frequency band is the 3.5 GHz band from 3500 MHz to 3600 MHz.

[0003] Currently, there are also broadband antennas, which can basically only cover part of the 5G frequency band, with a bandwidth of about 16.5%. It is very difficult to obtain a higher bandwidth by conventional means so as to cover all 5G communication frequency bands. Summary of the Utility Model

[0004] Embodiments of this application provide a bow-tie antenna for solving the technical problem that the structure of existing antennas cannot cover all 5G communication frequency bands.

[0005] To achieve the above object, embodiments of this application provide the following technical solutions:

[0006] On the one hand, a bow-tie antenna is provided, including a ground plane and a bottom layer dielectric and a top layer dielectric located at the upper and lower ends of the ground plane. A radiation patch in the shape of a bow-tie is arranged on the top layer dielectric. An antenna body is arranged below the radiation patch. A coaxial feed end is arranged on the antenna body. Coupling through holes are formed in both the ground plane and the bottom layer dielectric. The coaxial line of the coaxial feed end sequentially passes through the coupling through holes of the bottom layer dielectric and the ground plane and is connected to a microstrip line, and the microstrip line is connected to the antenna body.

[0007] Preferably, rectangular slots are formed at both ends of the radiation patch.

[0008] Preferably, the bottom layer dielectric is made of a plate with a dielectric constant of 4.4.

[0009] Preferably, the top layer dielectric is made of a plate with a dielectric constant of 2.2.

[0010] Preferably, the thickness of the top layer dielectric is greater than twice the thickness of the bottom layer dielectric.

[0011] Preferably, the ground plane is made of a metal aluminum plate.

[0012] Preferably, the thickness of the ground plane is 0.05 mm.

[0013] Preferably, the transmitting end of the antenna body is exposed above the radiation patch.

[0014] As can be seen from the above technical solutions, the embodiments of the present application have the following advantages: The bowtie antenna includes a ground plane, a bottom layer dielectric and a top layer dielectric located at the upper and lower ends of the ground plane. A radiation patch in the shape of a bowtie is arranged on the top layer dielectric. An antenna body is arranged below the radiation patch. A coaxial feed end is arranged on the antenna body. Coupling through holes are formed in both the ground plane and the bottom layer dielectric. The coaxial line of the coaxial feed end sequentially passes through the coupling through holes of the bottom layer dielectric and the ground plane and is connected to a microstrip line, and the microstrip line is connected to the antenna body. The bowtie antenna forms a multi-layer dielectric stack structure through the top layer dielectric, the ground plane and the bottom layer dielectric. The coaxial line of the antenna body passes through the coupling through hole and is connected to the antenna body through the microstrip line. The aperture coupling feeding method is selected for the feeding method, which expands the bandwidth of the bowtie antenna, improves the gain of the bowtie antenna, enables the bowtie antenna to cover the communication frequency band of 3.1 - 3.6 GHz, and solves the technical problem that the existing antenna structure cannot cover all 5G communication frequency bands. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a front view structural schematic diagram of the bowtie antenna described in the embodiment of the present application;

[0017] Figure 2 It is a bottom view structural schematic diagram of the bowtie antenna described in the embodiment of the present application;

[0018] Figure 3 It is a top view structural schematic diagram of the bowtie antenna described in the embodiment of the present application;

[0019] Figure 4 It is an echo loss diagram of the bowtie antenna described in the embodiment of the present application;

[0020] Figure 5 It is an E-plane and H-plane gain diagram of the bowtie antenna described in the embodiment of the present application;

[0021] Figure 6 It is an actual gain diagram of the bowtie antenna described in the embodiment of the present application. Detailed Embodiments

[0022] In order to make the invention object, features, and advantages of the present application more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0023] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0025] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0026] The embodiments of the present application provide a bow-tie antenna, which is used to solve the technical problem that the structure of the existing antenna cannot cover all 5G communication frequency bands.

[0027] Figure 1 is a front view structural schematic diagram of the bow-tie antenna described in the embodiments of the present application, Figure 2 is a bottom view structural schematic diagram of the bow-tie antenna described in the embodiments of the present application.

[0028] Such as Figure 1 and Figure 2As shown in the figure, an embodiment of the present application provides a bowtie antenna, which includes a ground plane 10, a bottom layer dielectric 20 and a top layer dielectric 30 located at the upper and lower ends of the ground plane 10. A radiation patch 40 in the shape of a bowtie is provided on the top layer dielectric 30. An antenna body 50 is provided below the radiation patch 40. A coaxial feed end is provided on the antenna body 50. Coupling through holes 11 are formed on both the ground plane 10 and the bottom layer dielectric 20. The coaxial line of the coaxial feed end sequentially passes through the coupling through holes 11 of the bottom layer dielectric 20 and the ground plane 10 and is connected to a microstrip line 60, and the microstrip line 60 is connected to the antenna body 50.

[0029] It should be noted that, as Figure 1 shown, the top layer dielectric 30, the ground plane 10 and the bottom layer dielectric 20 are sequentially arranged from top to bottom for the bowtie antenna, so that the bowtie antenna adopts a structure of multi-layer dielectric stacking. The coaxial feed end of the bowtie antenna passes through the coupling through hole 11 and is connected to the antenna body 50 by using the microstrip line 60, realizing the coupling feed between the coaxial feed end and the antenna body 50, and enabling the bowtie antenna to select the aperture coupling feed method in the feeding method, which is beneficial to expanding the bandwidth of the bowtie antenna and improving the gain of the bowtie antenna. In this embodiment, the bowtie antenna adopts a three-layer stack design, which is composed of upper and lower two layers of dielectrics and a ground plane between the two layers of dielectrics. According to the structure of the bowtie antenna, multiple bowtie antennas can be combined into an antenna array.

[0030] In the embodiment of the present application, the coaxial line 51 of the coaxial feed end in the antenna body 50 passes through the coupling through hole 11 of the bottom layer dielectric 20 and the coupling through hole 11 of the ground plane 10 and is connected to the microstrip line 60 together, and realizes the coupling feed of the antenna body 50 through the connection between the microstrip line 60 and the antenna body 50. The transmitting end of the antenna body 50 is exposed above the radiation patch 40

[0031] It should be noted that, as Figure 1 shown, the coaxial feed end of the antenna body 50 can be made of an elliptical conductor, and the transmitting end of the antenna body 50 can be made of a rectangular conductor. The barbell-shaped through hole has the smallest area and higher coupling efficiency, and the coupling through hole 11 formed on the bottom layer dielectric 20 and the ground plane 10 adopts a barbell-shaped through hole. In this embodiment, the bowtie antenna adopting the aperture coupling feeding method can utilize the bowtie-shaped radiation patch to aggregate multiple resonances, and can better expand the impedance bandwidth of the bowtie antenna.

[0032] In the embodiment of the present application, the radiation patch 40 is the radiator of the bowtie antenna.

[0033] A bow-tie antenna provided by the present application includes a ground plane and a bottom layer dielectric and a top layer dielectric located at the upper and lower ends of the ground plane. A radiation patch in the shape of a bow-tie is arranged on the top layer dielectric. An antenna body is arranged below the radiation patch. A coaxial feed end is arranged on the antenna body. Coupling through holes are formed in both the ground plane and the bottom layer dielectric. The coaxial line of the coaxial feed end sequentially passes through the coupling through holes of the bottom layer dielectric and the ground plane and is connected to a microstrip line, and the microstrip line is connected to the antenna body. This bow-tie antenna forms a multi-layer dielectric stack structure through the top layer dielectric, the ground plane and the bottom layer dielectric. The coaxial line of the antenna body passes through the coupling through hole and is connected to the antenna body through the microstrip line. The aperture coupling feeding method is selected in the feeding method, which expands the bandwidth of this bow-tie antenna, improves the gain of this bow-tie antenna, enables this bow-tie antenna to cover the communication frequency band of 3.1~3.6GHz, and solves the technical problem that the structure of the existing antenna cannot cover all 5G communication frequency bands.

[0034] It should be noted that this bow-tie antenna can be widely applied to application scenarios such as wireless communication applications and Internet of Things technology applications that cover 5G communication frequency bands. This bow-tie antenna has the advantages of easy processing and low cost.

[0035] Figure 3 It is a top view structural schematic diagram of the bow-tie antenna described in the embodiment of the present application.

[0036] As Figure 2 and Figure 3 shown, in an embodiment of the present application, rectangular slots 41 are formed at both ends of the radiation patch 40.

[0037] It should be noted that, as Figure 2 and Figure 3 shown, rectangular slits are formed on the bow-ties at the left and right ends of the radiation patch 40 to form rectangular slots 41, thereby enhancing the gain of this bow-tie antenna.

[0038] As Figure 1 shown, in an embodiment of the present application, the bottom layer dielectric 20 is made of a plate with a dielectric constant of 4.4. The top layer dielectric 30 is made of a plate with a dielectric constant of 2.2.

[0039] It should be noted that the top layer dielectric 30 is made of Rogers RT / duroid 5880 plate with a dielectric constant of 2.2, and the bottom layer dielectric 20 is made of FR4 plate with a dielectric constant of 4.4. Using a dielectric with a high dielectric constant as the bottom layer dielectric 20 of this bow-tie antenna can enhance the coupling effect of the feeding of this bow-tie antenna, thereby enhancing the bandwidth of this bow-tie antenna and achieving a higher gain of this bow-tie antenna. In this embodiment, the thickness of the top layer dielectric 30 is greater than twice the thickness of the bottom layer dielectric 20.

[0040] As Figure 1 shown, in an embodiment of the present application, the ground panel 10 is made of a metal aluminum plate.

[0041] It should be noted that the ground panel 10 can be a metal rectangular aluminum plate. The thickness of the ground panel 10 can be selected as 0.05 mm.

[0042] Figure 4 is the return loss diagram of the bow-tie antenna described in the embodiment of the present application. Figure 5 is the E-plane and H-plane gain diagrams of the bow-tie antenna described in the embodiment of the present application. Figure 6 is the actual gain diagram of the bow-tie antenna described in the embodiment of the present application.

[0043] In an embodiment of the present application, as Figure 4 shown, the operating frequency band of the bow-tie antenna should be less than -10 dB. The operating frequency band of the bow-tie antenna is located at 3.11 GHz to 3.67 GHz, and the bandwidth relative to the existing antenna reaches 16.5%. As Figure 5 and Figure 6 shown, the gain of the bow-tie antenna within the frequency band of 3.11 GHz to 3.67 GHz is above 5 dB and is very stable with little fluctuation.

[0044] It should be noted that the bow-tie antenna uses a bow-tie radiation patch to meet the requirements of high performance and small size, and uses a microstrip line coupling feeding method to reduce signal loss. Compared with the existing antenna, the operating bandwidth of the bow-tie antenna reaches 16.5%, enabling the operating frequency band range of the bow-tie antenna to cover the communication frequency band of 3.1 GHz to 3.6 GHz.

[0045] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, devices, and units can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0046] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0047] The unit described as a separation component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, and it may be located in one place or distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0048] In addition, each functional unit in various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0049] As described above, the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A bow tie antenna, characterized in that: The invention comprises a ground panel and a bottom dielectric and a top dielectric located at the upper and lower ends of the ground panel, wherein a radiation patch in the shape of a bow tie is arranged on the top dielectric, an antenna body is arranged below the radiation patch, a coaxial feeding end is arranged on the antenna body, coupling through holes are provided on the ground panel and the bottom dielectric, a coaxial line of the coaxial feeding end passes through the coupling through holes of the bottom dielectric and the ground panel in sequence to be connected to a microstrip line, and the microstrip line is connected to the antenna body.

2. The bow tie antenna according to claim 1, characterized in that: Rectangular grooves are formed at two ends of the radiation patch.

3. The bow tie antenna according to claim 1, characterized in that: The bottom layer medium is made of a plate material with a dielectric constant of 4.

4.

4. The bow tie antenna according to claim 1, characterized in that: The top dielectric is made of a plate with a dielectric constant of 2.

2.

5. The bow tie antenna according to claim 1, characterized in that: The thickness of the top dielectric layer is greater than twice the thickness of the bottom dielectric layer.

6. The bow tie antenna according to claim 1, characterized in that: The grounding panel is made of metal aluminum plate.

7. The bow tie antenna according to claim 1, characterized in that: The thickness of the ground panel is 0.05 mm.

8. The bow tie antenna according to claim 1, characterized in that: The transmitting end of the antenna body is exposed above the radiation patch.

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