High-gain beautified antenna

Abstract

The embodiment of the invention provides a high-gain embellished antenna, and belongs to the technical field of antennae, and the high-gain embellished antenna comprises an antenna housing and an antenna main body. The antenna main body comprises a dielectric substrate, a floor, a microstrip patch and a feed part, and the dielectric substrate, the floor, the microstrip patch and the feed part are all located in the antenna housing; the microstrip patch and the floor are correspondingly arranged on the two opposite sides of the dielectric substrate respectively, and the feed piece is connected with the dielectric substrate or the microstrip patch; the antenna main body is provided with a plurality of through holes, and each through hole simultaneously penetrates through the microstrip patch, the dielectric substrate and the floor. According to the high-gain beautified antenna provided by the embodiment of the invention, the problems in the prior art that the profile is relatively high and the overall structure is relatively complex when the bandwidth of the antenna is broadened are solved.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to a high-gain beautification antenna. Background Art

[0002] Beautifying the antenna means hiding the antenna in the surrounding environment by camouflaging or modifying the antenna, thereby meeting the requirements of modern communication systems for antenna performance, appearance and concealment.

[0003] In the related art, planar microstrip patch antennas are widely used in the field of wireless communications. When installed, an outer cover is used to cover the planar microstrip patch antenna to achieve the purpose of beautifying the antenna. In addition, the antenna bandwidth is often widened by changing the feeding structure, introducing parasitic units, or exciting multi-resonance modes.

[0004] However, when the antenna bandwidth is widened in the above manner, there are problems such as a high antenna profile and a relatively complex overall structure, which in turn increases the size of the required outer cover, making it difficult to hide the antenna in the surrounding environment. Summary of the invention

[0005] The embodiment of the present application provides a high-gain beautification antenna, which is used to solve the problem in the prior art that the antenna has a high cross-section and a relatively complex overall structure when widening the bandwidth.

[0006] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0007] An embodiment of the present application provides a high-gain beautification antenna, comprising an antenna cover and an antenna body; the antenna body comprises a dielectric substrate, a floor, a microstrip patch and a feeder, and the dielectric substrate, the floor, the microstrip patch and the feeder are all located inside the antenna cover; the microstrip patch and the floor are respectively arranged on two opposite sides of the dielectric substrate, and the feeder is connected to the dielectric substrate or the microstrip patch; the antenna body is provided with a plurality of through holes, and each of the through holes simultaneously penetrates the microstrip patch, the dielectric substrate and the floor.

[0008] In a possible implementation manner, the shape of the microstrip patch is any symmetrical shape.

[0009] In a possible implementation manner, the plurality of through holes are symmetrically distributed around the center of the microstrip patch, and each of the through holes is located on a different symmetry axis of the microstrip patch.

[0010] In a possible implementation manner, the number of the through holes is a multiple of 4.

[0011] In a possible implementation manner, the feeding element includes a feeding probe, and one end of the feeding probe is arranged on a surface of the microstrip patch facing away from the dielectric substrate.

[0012] In a possible implementation manner, the feeding probe is located on any diagonal line of the microstrip patch.

[0013] In a possible implementation manner, the dielectric constant of the dielectric substrate is 1-20.

[0014] In a possible implementation manner, an edge of the microstrip patch is located inside an edge of the dielectric substrate.

[0015] In a possible implementation, the central axis of the microstrip patch is in the same straight line as the central axis of the dielectric substrate, and the distance between the edge of the microstrip patch and the edge of the dielectric substrate is one quarter of the working wavelength of the antenna body.

[0016] In a possible implementation, the radome is provided with a feeder, one end of the feeder is connected to the feeding element, and the other end of the feeder is located outside the radome.

[0017] The embodiment of the present application provides a high-gain beautification antenna, which is provided by setting an antenna cover and an antenna body; the antenna body includes a dielectric substrate, a floor, a microstrip patch and a feeder, and the dielectric substrate, the floor, the microstrip patch and the feeder are all located inside the antenna cover; the microstrip patch and the floor are respectively arranged on the opposite sides of the dielectric substrate, and the feeder is connected to the dielectric substrate or the microstrip patch; the antenna body is provided with a plurality of through holes, and each through hole simultaneously penetrates the microstrip patch, the dielectric substrate and the floor. Thus, after the feeder is powered, the radio frequency signal excites the microstrip patch to generate electromagnetic waves. Secondly, the set through holes can effectively excite and regulate multiple resonant modes, thereby exciting three resonant modes with similar frequencies and similar radiation characteristics without increasing the overall cross-section of the antenna body and the number of dielectric substrate layers, thereby effectively improving the working bandwidth of the antenna body, and improving the size and stability of the radiation gain. It solves the problem of the antenna body having a high cross-section and a complex overall structure when widening the bandwidth in the prior art. Since the antenna body is small in size and thin in thickness, it can be embedded in a small antenna cover, which is more conducive to hiding the antenna body in the surrounding environment, significantly improving the concealment of the beautification antenna and reducing the difficulty of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments that conform to the present application, and together with the specification, are used to explain the principles of the present application.

[0019] Figure 1 A schematic diagram of a partial cross-sectional structure of a high-gain beautification antenna provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the antenna body;

[0021] Figure 3 for Figure 1 Reflection coefficient curve of the antenna body;

[0022] Figure 4 for Figure 1 The radiation pattern of the antenna body at the center frequency.

[0023] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0024] Description of reference numerals:

[0025] 100-radome;

[0026] 200-antenna body;

[0027] 210- dielectric substrate;

[0028] 220- Floor;

[0029] 230-microstrip patch;

[0030] 240-feeder;

[0031] 300-through hole;

[0032] 400-Feeder. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application and how the technical solutions in the present application solve the above-mentioned technical problems will be clearly and completely described below with specific embodiments and in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0035] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0036] In the related art, planar microstrip patch antennas are widely used in the field of wireless communications. When installed, an outer cover is used to cover the planar microstrip patch antenna to achieve the purpose of beautifying the antenna. In addition, the antenna bandwidth is often widened by changing the feeding structure (i.e., introducing a matching network at the antenna input or using an L-shaped probe or other structure to widen the antenna bandwidth), introducing a parasitic unit (i.e., increasing the resonance point by introducing a parasitic patch unit, and using a similar staggered tuning method to make it located near the original resonance frequency, thereby widening the antenna's operating frequency band) or exciting multiple resonance modes (i.e., by optimizing the antenna shape, regulating the multiple resonance modes of the patch resonator to aggregate them, thereby widening the antenna bandwidth).

[0037] However, when the antenna bandwidth is widened in the above manner, there are problems such as a high antenna profile and a relatively complex overall structure, which in turn increases the size of the required outer cover, making it difficult to hide the antenna in an indoor environment.

[0038] Thus, the embodiment of the present application provides a high-gain beautification antenna, through the antenna cover and the antenna body; the antenna body includes a dielectric substrate, a floor, a microstrip patch and a feeder, the microstrip patch and the floor are respectively arranged on the opposite sides of the dielectric substrate, and the feeder is connected to the dielectric substrate or the microstrip patch; the antenna body is provided with a plurality of through holes, each of which simultaneously penetrates the microstrip patch, the dielectric substrate and the floor; thus, after the feeder is powered, the radio frequency signal excites the microstrip patch to generate electromagnetic waves, and secondly, the through holes can effectively excite and regulate multiple resonant modes, thereby exciting three resonant modes with similar frequencies and similar radiation characteristics without increasing the overall cross-section of the antenna body and the number of layers of the dielectric substrate, thereby effectively improving the working bandwidth of the antenna body, and improving the size and stability of the radiation gain. The problem that the antenna body in the prior art has a high cross-section and a complex overall structure when widening the bandwidth is solved. Since the antenna body has the characteristics of small size and thin thickness, it can be embedded in a small antenna cover, which is more conducive to hiding the antenna body in the surrounding environment, significantly improving the concealment of the beautification antenna, and reducing the difficulty of installation.

[0039] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0040] like Figure 1 and Figure 2 As shown, the embodiment of the present application provides a high-gain beautification antenna, including an antenna cover 100 and an antenna body 200; the antenna body 200 includes a dielectric substrate 210, a floor 220, a microstrip patch 230 and a feeder 240, and the dielectric substrate 210, the floor 220, the microstrip patch 230 and the feeder 240 are all located inside the antenna cover 100; the microstrip patch 230 and the floor 220 are respectively arranged on opposite sides of the dielectric substrate 210, and the feeder 240 is connected to the dielectric substrate 210 or the microstrip patch 230; the antenna body 200 is provided with a plurality of through holes 300, and each through hole 300 simultaneously penetrates the microstrip patch 230, the dielectric substrate 210 and the floor 220.

[0041] In the embodiment of the present application, the dielectric substrate 210 can be placed horizontally, and the microstrip patch 230 is attached to the upper surface of the dielectric substrate 210, and the floor 220 is attached to the lower surface of the dielectric substrate 210. The microstrip patch 230 is made of a metal material, such as copper, gold or aluminum; the floor 220 is made of a metal material, such as copper or aluminum.

[0042] Generally, a lower dielectric constant of the dielectric substrate 210 helps increase the bandwidth of the antenna. In this regard, in this embodiment, the dielectric constant of the dielectric substrate 210 is 1-20. Of course, the thickness and dielectric constant of the dielectric substrate 210 can also be reasonably set according to actual needs, and can also be replaced with air medium, and no other restrictions are made on this.

[0043] A plurality of through holes 300 are provided, and each through hole 300 simultaneously penetrates the microstrip patch 230 , the dielectric substrate 210 , and the floor 220 . The aperture and shape of the through hole 300 can be set according to actual needs, and there is no limitation thereto.

[0044] It should be noted that the antenna cover 100 can be set as a thin-walled structure, and the specific shape of the antenna cover 100 can be set according to the actual environment or the overall shape of the antenna body 200. For example, according to the needs of the application scenario, it can be flexibly changed into a square column shape, an exhaust pipe shape, a spotlight shape, a chameleon shape, a mural shape or other shapes. There is no restriction on this, so long as it can cover the antenna body 200 to ensure the concealment of the antenna body 200.

[0045] Therefore, after the feeder 240 is powered, the RF signal excites the microstrip patch 230 to generate electromagnetic waves. Secondly, the through hole 300 can effectively excite and regulate multiple resonant modes, thereby improving the operating frequency and bandwidth of the antenna body 200 without increasing the overall cross-section of the antenna body 200; at the same time, the resonant modes are close to each other to form broadband performance, achieving high gain characteristics, improving the efficiency and gain of the antenna body 200, and not easily increasing the size of the required antenna cover 100, which is more conducive to hiding the antenna body 200 in the surrounding environment, solving the problem of the antenna in the prior art having a high cross-section and a relatively complex overall structure when widening the bandwidth. Since the antenna body has the characteristics of small size and thin thickness, it can be embedded in a small antenna cover, which is more conducive to hiding the antenna body in the surrounding environment, significantly improving the concealment of the beautified antenna and reducing the difficulty of installation.

[0046] It should be noted that the shape of the microstrip patch 230 is any symmetrical shape, such as a square, a circle, a polygon, etc. This helps to generate a symmetrical radiation pattern, thereby improving the directivity and coverage of the antenna.

[0047] In order to facilitate the connection of the antenna body 200 in the antenna cover 100, as shown in FIG. Figure 1 and Figure 2 As shown, in some embodiments, the radome 100 is provided with a feed line 400 , one end of the feed line 400 is connected to the feeding element 240 , and the other end of the feed line 400 is located outside the radome 100 .

[0048] In actual implementation, for example, a hole or a gap for the feed line 400 to pass through can be opened on the antenna cover 100.

[0049] When in use, just connect one end of the feed line 400 to the feed element 240, and pass the other end through the hole or notch on the antenna cover 100 to the outside of the antenna cover 100, and connect the end of the feed line 400 away from the feed element 240 to the external circuit, thereby improving the convenience of connecting the antenna body 200 to the power supply.

[0050] It is understandable that, in actual operation, the excess feeder line 400 can be stored in the antenna cover 100 according to the actual length requirement of the feeder line 400, so as to reasonably reduce the length of the feeder line 400 exposed outside the antenna cover 100, thereby providing protection for the feeder line 400 through the antenna cover 100 as much as possible.

[0051] In addition, the provision of the through hole 300 essentially changes the resonance condition of the microstrip patch 230, thus interfering with the field distribution characteristics within the microstrip patch 230, thereby affecting the resonance frequency and radiation characteristics of the resonance mode. Therefore, by regulating the number and position of the through hole 300, the bandwidth and radiation characteristics of the antenna body 200 can also be effectively adjusted.

[0052] like Figure 2 As shown, in some embodiments, a plurality of through holes 300 are symmetrically distributed around the center of the microstrip patch 230 , and each through hole 300 is located on a different symmetry axis of the microstrip patch 230 .

[0053] Furthermore, the number of through holes 300 is a multiple of four.

[0054] Exemplarily, four through holes 300 may be provided, and each through hole 300 is located on a different symmetry axis of the microstrip patch 230 .

[0055] Thus, the symmetrically arranged through holes 300 can help to more accurately control the resonant frequency of the antenna body 200 , thereby improving the frequency selectivity and sensitivity of the antenna body 200 .

[0056] In other embodiments, the through holes 300 may be provided in other numbers according to actual requirements.

[0057] In this embodiment, the microstrip patch 230 is set to a rectangular structure, and the four through holes 300 are divided into two groups, each group including two through holes 300. The two through holes 300 in one group are simultaneously located on a symmetry axis parallel to the long side of the microstrip patch 230, and the two through holes 300 in the other group are simultaneously located on a symmetry axis parallel to the wide side of the microstrip patch 230, and the two through holes 300 in the same group are also symmetrically distributed relative to the center of the microstrip patch 230.

[0058] Furthermore, it can further help improve the radiation characteristics of the antenna body 200, making the radiation pattern of the antenna body 200 more symmetrical and balanced, thereby improving the performance of the antenna body 200.

[0059] It should be noted that the plurality of through holes 300 may also be arranged on a circumference with the center of the microstrip patch 230 as the center.

[0060] It can be understood that, in the embodiment of the present application, the four through holes 300 are all located on a circle with the center of the microstrip patch 230 as the center.

[0061] Thereby, the symmetry of the radiation of the antenna body 200 is further increased, and the use effect of the antenna body 200 is improved.

[0062] In other embodiments, the microstrip patch 230 may be configured to have other shapes, such as a circle, a diamond, or other polygonal structures, which is not limited thereto.

[0063] like Figure 2 As shown, in some embodiments, the edge of the microstrip patch 230 is located inside the edge of the dielectric substrate 210 .

[0064] In actual implementation, the dielectric substrate 210 and the microstrip patch 230 may both be configured as quadrilateral structures, with the extension directions of the corresponding sides being parallel to each other, and the edge of the microstrip patch 230 being located inside the edge of the dielectric substrate 210 .

[0065] When working, the edge effect can be reduced, the impedance and frequency can be accurately adjusted, and the reliability and electromagnetic compatibility of the antenna body 200 can be improved. At the same time, the dielectric substrate 210 provides physical protection for the microstrip patch 230, reducing the possibility of damage to the edge of the microstrip patch 230.

[0066] like Figure 2 As shown, on this basis, further, the central axis of the microstrip patch 230 and the central axis of the dielectric substrate 210 can be aligned in a straight line, and the distance between the edge of the microstrip patch 230 and the edge of the dielectric substrate 210 is one quarter of the working wavelength of the antenna body 200.

[0067] It should be noted that the distance between the edge of the microstrip patch 230 and the edge of the dielectric substrate 210 is one quarter of the working wavelength of the antenna body 200. This can effectively control the edge effect, help reduce unnecessary radiation and improve antenna efficiency, and ensure the stability of the radiation pattern of the antenna body 200 and the symmetry of the direction.

[0068] Thus, the symmetry of the overall structure of the antenna body 200 can be ensured, which helps to achieve symmetrical electromagnetic field distribution, thereby improving the radiation pattern and directivity of the antenna body 200.

[0069] In other optional embodiments, the edge of the microstrip patch 230 may be flush with the edge of the dielectric substrate 210. This can maximize the radiation area of ​​the antenna body 200 and simplify the manufacturing process, so that the antenna body 200 also has a better use effect.

[0070] like Figure 2 As shown, in some embodiments, the feeding element 240 includes a feeding probe, one end of which is disposed on a surface of the microstrip patch 230 facing away from the dielectric substrate 210 .

[0071] The feeding element 240 is configured as a feeding probe, which has the advantage of a simple structure, can make the overall structure of the antenna body 200 more concise, reduce manufacturing cost and complexity, and facilitate integration.

[0072] like Figure 2 As shown, further, the feeding probe is located on any diagonal line of the microstrip patch 230 .

[0073] This helps to adjust the resonant frequency of the antenna body 200 to make it more suitable for specific application requirements; at the same time, it can excite multiple modes of the microstrip patch 230 to achieve a more complex radiation pattern and even a wider bandwidth.

[0074] In other embodiments, the feeder 240 may also be configured as a variety of feeding forms such as microstrip, coupling, etc. Furthermore, the feeder 240 may also be disposed on the dielectric substrate 210 .

[0075] In the embodiments of the present application, for example, Figure 3 As shown, the antenna body 200 works in three resonance modes at the same time, and the cross section is only 0.034λ g A bandwidth of 14.5% was achieved under the condition of

[0076] like Figure 4 As shown, the E plane refers to the plane where the electric field vector is located (i.e., the plane perpendicular to the floor 220), and the H plane refers to the plane where the magnetic field vector is located (i.e., the plane parallel to the floor 220); the main polarization refers to the main polarization direction, and the cross polarization refers to the polarization direction orthogonal to the main polarization. As can be seen from the figure, the gain of the antenna can reach about 8.7dB, and the cross polarization in the main radiation direction (i.e., the direction with the highest radiation intensity) is much lower than the main polarization. Compared with the traditional patch antenna, the gain is increased by about 3dB.

[0077] In summary, the embodiment of the present application provides a high-gain beautification antenna. After the feed 240 is powered, the radio frequency signal excites the microstrip patch 230 to generate electromagnetic waves. Secondly, the set through hole 300 can effectively excite and regulate multiple resonant modes, thereby improving the operating frequency and bandwidth of the antenna body 200 without increasing the overall cross-section of the antenna body 200, and improving the efficiency and gain of the antenna body 200. It is not easy to increase the size of the required antenna cover 100, and it is more conducive to hiding the antenna body 200 in the surrounding environment, which solves the problem of the antenna in the prior art having a high cross-section and a relatively complex overall structure when widening the bandwidth.

[0078] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0079] Those skilled in the art will readily appreciate other embodiments of the present application after considering the description and practicing the contents disclosed herein. The present application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application. The description and embodiments are only considered as exemplary, and the scope of the present application is limited only by the appended claims.

Claims

1. A high-gain beautification antenna, characterized in that: It comprises a radome (100) and an antenna body (200); The antenna body (200) comprises a dielectric substrate (210), a floor (220), a microstrip patch (230) and a feeder (240); the dielectric substrate (210), the floor (220), the microstrip patch (230) and the feeder (240) are all located inside the radome (100); The microstrip patch (230) and the floor (220) are respectively and correspondingly arranged on two opposite sides of the dielectric substrate (210), and the feeding element (240) is connected to the dielectric substrate (210) or the microstrip patch (230); The antenna body (200) is provided with a plurality of through holes (300), and each of the through holes (300) simultaneously penetrates the microstrip patch (230), the dielectric substrate (210) and the floor (220).

2. The high-gain beautification antenna according to claim 1, characterized in that: The shape of the microstrip patch (230) is any symmetrical shape.

3. The high-gain beautification antenna according to claim 2, characterized in that: The plurality of through holes (300) are symmetrically distributed around the center of the microstrip patch (230), and each of the through holes (300) is located on a different symmetry axis of the microstrip patch (230).

4. The high-gain beautification antenna according to claim 3, characterized in that: The number of the through holes (300) is a multiple of 4.

5. The high-gain beautification antenna according to claim 1, characterized in that: The feeding element (240) comprises a feeding probe, one end of which is arranged on a surface of the microstrip patch (230) facing away from the dielectric substrate (210).

6. The high-gain beautification antenna according to claim 5, characterized in that: The feeding probe is located on any diagonal line of the microstrip patch (230).

7. The high-gain beautification antenna according to any one of claims 1 to 6, characterized in that: The dielectric constant of the dielectric substrate (210) is 1-20.

8. The high-gain beautification antenna according to any one of claims 1 to 6, characterized in that: The edge of the microstrip patch (230) is located inside the edge of the dielectric substrate (210).

9. The high-gain beautification antenna according to claim 8, characterized in that: The central axis of the microstrip patch (230) and the central axis of the dielectric substrate (210) are in the same straight line, and the distance between the edge of the microstrip patch (230) and the edge of the dielectric substrate (210) is one quarter of the working wavelength of the antenna body (200).

10. The high-gain beautification antenna according to any one of claims 1 to 6, characterized in that: The radome (100) is provided with a feeder (400), one end of the feeder (400) is connected to the feeder (240), and the other end of the feeder (400) is located outside the radome (100).

Images