Array antenna

Abstract

The utility model relates to an array antenna, which comprises a substrate, a main array element, a director, a strip-shaped isolator and a weighting array element, and is characterized in that the upper side surface of the substrate is provided with a radio frequency bottom plate, and the strip-shaped isolator is electrically connected with the radio frequency bottom plate; the main array element is arranged on the upper side surface of the radio frequency bottom plate; the director is arranged above the main array element; the director comprises a plurality of metal main bodies, and the plurality of metal main bodies are stacked from bottom to top and are arranged at intervals; each metal main body is an annular mechanism, and the sizes of the plurality of metal main bodies are gradually changed; the weighting array elements are arranged on the upper side surface of the substrate and are arranged at intervals with the main array elements. Therefore, the director is arranged on the main array element, and the size of each metal main body is gradually changed from bottom to top, so that the passive gain of the array antenna can be improved; meanwhile, due to the gradually-changed director structural design, the coupling strength of the main array element and the weighted array element can be weakened, and the problems of energy loss and channel noise caused by coupling are effectively solved.

Description

Technical Field

[0001] The present application relates to the field of antenna technology, and in particular to an array antenna. Background Art

[0002] Traditional anti-interference antenna array elements all use microstrip circularly polarized antennas, and the array element layout is mainly planar array. The coupling problem is more prominent, and even some traditional isolator technologies can only solve the coupling problem to a limited extent. Utility Model Content

[0003] The purpose of this application is to overcome the defects of the prior art and provide an array antenna.

[0004] The present application provides an array antenna, comprising:

[0005] A substrate, wherein the upper side of the substrate is provided with a radio frequency bottom plate;

[0006] A main array element, the main array element being arranged on the upper side of the radio frequency base plate;

[0007] A director, the director being disposed above the main array element; the director comprising a plurality of metal bodies, the plurality of metal bodies being stacked and spaced from bottom to top; each of the metal bodies being annular, and the sizes of the plurality of metal bodies being gradually varied;

[0008] a strip-shaped isolator, the strip-shaped isolator being electrically connected to the radio frequency bottom plate;

[0009] The weighted array element is arranged on the upper side of the substrate and is spaced apart from the main array element.

[0010] Furthermore, there are multiple weighted array elements, and the multiple weighted array elements are arranged around the main array element; and two adjacent weighted array elements are arranged at intervals.

[0011] Furthermore, the strip isolator is provided between two adjacent weighted array elements.

[0012] Furthermore, the weighted array element, the strip isolator and the radio frequency backplane are respectively printed on the substrate using circuit printing technology.

[0013] Furthermore, the substrate is a high-frequency circuit board.

[0014] Furthermore, it also includes a support column and a plurality of dielectric substrates located above the main array element, the support column is connected to the RF base plate; the plurality of dielectric substrates are stacked and spaced from bottom to top, and each dielectric substrate is connected to the support column; each metal body is respectively arranged on one of the dielectric substrates.

[0015] Furthermore, the size of the metal body is gradually increased from bottom to top.

[0016] Furthermore, the shape of the metal body is one or more of a circular ring, a rectangular ring, or an elliptical ring.

[0017] Furthermore, the radio frequency base plate is a double-sided board, the upper side of the radio frequency base plate is a reflector, and the lower side of the radio frequency base plate is provided with a radio frequency circuit.

[0018] Furthermore, the antenna of the weighted array element is a broadband antenna; and the antenna of the main array element is a multi-frequency antenna.

[0019] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0020] The array antenna provided in the embodiment of the present application includes a substrate, a main array element, a director, a strip isolator, and a weighted array element. The upper side of the substrate is provided with a radio frequency base plate; the strip isolator is electrically connected to the radio frequency base plate; the main array element is arranged on the upper side of the radio frequency base plate; the director is arranged above the main array element; the director includes multiple metal bodies, which are stacked and spaced from bottom to top; each metal body is a ring-shaped structure, and the sizes of the multiple metal bodies are gradually set; the weighted array element is arranged on the upper side of the substrate and spaced from the main array element. In this way, by setting the director above the main array element and setting the size of each metal body from bottom to top in a gradually changing manner, the passive gain of the array antenna can be improved. At the same time, due to the gradual design of the director structure, the coupling strength between the main array element and the weighted array element can be weakened, effectively solving the energy loss and channel noise problems caused by coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] Figure 1It is a structural diagram of the array antenna of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure decomposition of the array antenna of the utility model;

[0026] Figure 3 It is a schematic diagram of the structural decomposition of the array antenna of the utility model.

[0027] Substrate 1, radio frequency bottom plate 2, main array element 3, director 4, metal body 41, support column 42, dielectric substrate 43, weighted array element 5, strip isolator 6. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0030] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0031] Figures 1 to 3 The array antenna shown in the figure includes a substrate 1, a main array element 3, a director 4, a strip isolator 6 and a weighted array element 5. The upper side of the substrate 1 is provided with a radio frequency base plate 2; the strip isolator is electrically connected to the radio frequency base plate; the main array element 3 is arranged on the upper side of the radio frequency base plate 2; the director 4 is arranged above the main array element 3; the director 4 includes a plurality of metal bodies 41, which are stacked and spaced from bottom to top; each metal body 41 is a ring-shaped structure, and the sizes of the plurality of metal bodies 41 are gradually set; the weighted array element 5 is provided on the upper side of the substrate 1 and is spaced from the main array element 3.

[0032] It can be understood that by placing director 4 above main array element 3 and gradually varying the size of each metal body 41 from bottom to top, the passive gain of the array antenna can be improved. Furthermore, the gradually varying structure of director 4 can reduce the coupling strength between main array element 3 and weighted array element 5, effectively addressing energy loss and channel noise caused by coupling.

[0033] The arrangement of the array antenna of the present application is different from that of a planar array. Instead, a positioning common array antenna is formed by designing the positions of the director 4, the RF base plate 2, the main array element 3 and the weighted array element 5, which can improve the interference performance.

[0034] like Figures 1 to 3 As shown, in the technical solution of this embodiment, there are multiple weighted array elements 5, which are arranged around the main array element 3; adjacent weighted array elements 5 are arranged at intervals. The multiple weighted array elements 5 are arranged in a circular array around the main array element 3. The weighted array elements 5 can be set to a GNSS operating frequency, for example, Beidou B3, B1L1G1E1, or other frequencies. The main array element 3 can be set to the same frequency as the weighted array elements 5, or can also be set to GNSS multi-frequency.

[0035] like Figures 1 to 3 As shown, in the technical solution of this embodiment, in order to further solve the coupling problem between the main array element 3 and the weighted array element 5 , a strip isolator 6 is provided between two adjacent weighted array elements 5 .

[0036] In this embodiment, the weighted array element 5 , the strip isolator 6 and the radio frequency backplane 2 are respectively printed on the substrate 1 using a circuit printing technology.

[0037] It is understandable that the manufacturing process adopts circuit printing technology and is automatically produced by automatic production equipment. This can eliminate complex processes such as frequency debugging of the antenna and welding and assembly of the weighted array element 5 during production, thereby achieving better product consistency and a simpler production process, thereby reducing the cost of the antenna.

[0038] In the technical solution of this embodiment, the substrate 1 is a high-frequency circuit board.

[0039] It's understandable that high-frequency circuit boards, as a specialty type of circuit board, are primarily suitable for applications with relatively high electromagnetic frequencies, particularly in the high-frequency (frequencies greater than 300MHz or wavelengths less than 1 meter) and microwave (frequencies greater than 3GHz or wavelengths less than 0.1 meter) fields. They are manufactured on a microwave-based copper-clad laminate by adopting some of the manufacturing processes or special processing methods used for conventional rigid circuit boards. Generally speaking, a circuit board is considered high-frequency when its frequency reaches 1GHz or above.

[0040] To support the metal body 41, Figures 1 to 3 As shown, in the technical solution of this embodiment, the director 4 also includes support columns 42 and multiple dielectric substrates 43 located above the main array element 3. The support columns 42 are connected to the RF baseplate 2. The multiple dielectric substrates 43 are stacked and spaced apart from each other from bottom to top, and each dielectric substrate 43 is connected to the support columns 42. Each metal body 41 is mounted on a dielectric substrate 43. In this way, the support columns 42 provide a mounting base for the multiple dielectric substrates 43, allowing the multiple dielectric substrates 43 to be sequentially arranged above the main array element 3 at intervals, with each dielectric substrate 43 providing a mounting base for the metal body 41.

[0041] In this embodiment, the metal body 41112 can be copper foil or other materials with good conductivity.

[0042] In this embodiment, the support pillars 42 are made of insulating material, and there are multiple support pillars 42 .

[0043] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the size of the metal body 41 is gradually increased from bottom to top. This can better reduce the coupling strength between the main array element 3 antenna and the weighted array element 5, effectively solving the energy loss and channel noise problems caused by coupling.

[0044] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the shape of the metal body 41 is a circular ring. In some other embodiments, the shape of the metal body 41 can also be one or more of a rectangular ring, an elliptical ring, or the like.

[0045] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the RF base plate 2 is a double-sided board, both sides of which are coated with a conductive layer and separated by an insulating material in the middle. The upper side of the RF base plate 2 is located in a layer that is a reflector, and the lower side of the RF base plate 2 is located in a layer that is provided with a RF circuit.

[0046] The design of the reflector can improve the sensitivity of the antenna signal of the main array element 3, and reflect the antenna signal to the director 4, which not only greatly enhances the antenna capability, but also blocks and shields other radio waves from the back of the RF base plate 2, which interfere with the received signal and improve the anti-interference performance.

[0047] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the antenna of the weighted array element 5 is a broadband antenna, while the antenna of the main array element 3 is a multi-frequency antenna. The antenna of the main array element 3 can be configured as an air dielectric antenna or a microstrip patch antenna. This allows the weighted array element 5, reflector, and strip isolator 6 to be printed on a high-frequency plate. The manufacturing process utilizes circuit printing technology and is automated using automated production equipment. This eliminates complex production processes such as antenna frequency tuning and soldering and assembly of the weighted array element 5. This results in greater product consistency and a more streamlined production process, reducing antenna costs.

[0048] The technical solutions of the embodiments of the present application can better solve a series of problems in the existing market, such as low passive gain of antennas with an array size less than half a wavelength, strong coupling, complex processes such as the need for debugging in the production of small-sized antenna array elements, and poor production consistency.

[0049] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0050] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0051] The foregoing description is intended only to provide specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but rather to be construed in the broadest manner consistent with the principles and novel features claimed herein.

Claims

1. An array antenna, characterized in that: include: A substrate (1), wherein a radio frequency bottom plate (2) is provided on the upper side of the substrate (1); A main array element (3), the main array element (3) being arranged on the upper side of the radio frequency base plate (2); A director (4), the director (4) being arranged above the main array element (3); the director (4) comprising a plurality of metal bodies (41), the plurality of metal bodies (41) being stacked and spaced from bottom to top; each of the metal bodies (41) being an annular structure, and the sizes of the plurality of metal bodies (41) being arranged in a gradually varying manner; a strip-shaped isolator (6), the strip-shaped isolator (6) being electrically connected to the radio frequency bottom plate (2); The weighted array element (5) is arranged on the upper side of the substrate (1) and is spaced apart from the main array element (3).

2. The array antenna according to claim 1, wherein: There are multiple weighted array elements (5), and the multiple weighted array elements (5) are arranged around the main array element (3); and two adjacent weighted array elements (5) are arranged at intervals.

3. The array antenna according to claim 1, wherein: The strip-shaped isolator (6) is provided between two adjacent weighted array elements (5).

4. The array antenna according to claim 3, wherein: The weighted array element (5), the strip isolator (6), and the radio frequency base plate (2) are respectively printed on the substrate (1) using circuit printing technology.

5. The array antenna according to claim 1, wherein: The substrate (1) is a high-frequency circuit board.

6. The array antenna according to any one of claims 1 to 5, characterized in that: The invention also includes a support column (42) and a plurality of dielectric substrates (43) located above the main array element (3), wherein the support column (42) is connected to the radio frequency base plate (2); the plurality of dielectric substrates (43) are stacked and arranged at intervals from bottom to top, and each dielectric substrate (43) is connected to the support column (42); and each metal body (41) is respectively arranged on one dielectric substrate (43).

7. The array antenna according to any one of claims 1 to 5, characterized in that: The size of the metal body (41) is gradually increased from bottom to top.

8. The array antenna according to any one of claims 1 to 5, characterized in that: The shape of the metal body (41) is one or more of a circular ring, a rectangular ring, or an elliptical ring.

9. The array antenna according to any one of claims 1 to 5, characterized in that: The radio frequency bottom plate (2) is a double-sided plate, the upper side of the radio frequency bottom plate (2) is a reflector, and the lower side of the radio frequency bottom plate (2) is provided with a radio frequency circuit.

10. The array antenna according to any one of claims 1 to 5, characterized in that: The antenna of the weighted array element (5) is a broadband antenna; the antenna of the main array element (3) is a multi-frequency antenna.

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