Antenna arrays and routers

Abstract

The embodiment of the present application discloses an antenna assembly and a router, wherein the antenna assembly includes a substrate and a plurality of antenna arrays, wherein the plurality of antenna arrays are arranged in an array on the same substrate surface of the substrate, and each antenna array extends in a first direction perpendicular to the substrate surface; the antenna array includes two array surfaces extending in the first direction and a first end and a second end located at relative positions on the array surfaces in the first direction, the antenna array is connected to the substrate at the first end, and a monopole antenna and a slot antenna are arranged on the two array surfaces, wherein the monopole antenna is connected at the first end and the slot antenna is connected at the second end, and along the second direction perpendicular to the array surface, the projection of the monopole antenna and the projection of the slot antenna overlap with each other. The technical solution disclosed in the embodiment of the present application realizes two polarized antennas with high isolation through two types of feeding, supports wide-band, dual-polarization scanning, and can provide wide-angle scanning.

Description

[Technical field]

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

[0002] Traditional scanning array antennas generally use dipoles, monopoles, Vivaldi arrays (Vivaldi is a slot microstrip antenna that uses an exponential slot structure to control electromagnetic waves to radiate electromagnetic energy from one end of the slot to the open end), etc. There are ways to adjust the main lobe of the antenna by mechanical structure, and there are also ways to control the direction of the main lobe by phase. In comparison, phase control has the advantages of high precision, high sensitivity, and precise scanning angle.

[0003] For the unit oscillators of the array, if high isolation between different antennas is to be achieved, commonly used methods include increasing the physical distance between different antennas, adding decoupling networks, polarization differences, and other solutions.

[0004] Supporting 5G (5th Generation Mobile Communication Technology) and WIFI6 (formerly known as IEEE 802.11.ax, the sixth generation of wireless network technology, is the name of the Wi-Fi standard. It is a wireless LAN technology created by the Wi-Fi Alliance based on the IEEE 802.11 standard.) means that there must be two or more antennas in very adjacent frequency bands, such as the 5G n79 band antenna (4.4-5GHz) and the WIFI 5GHz antenna; or two WIFI 5GHz antennas of the same frequency or two n79 antennas of the same frequency working at the same time to ensure that MIMO (multiple input multiple output) is effective. If multiple antennas of adjacent frequency bands or the same frequency band need to work at the same time, a better correlation coefficient is required. The more important factors that determine the correlation coefficient are isolation, directivity, etc. A common method to solve this problem is to give different antennas a physical interval. [Summary of the invention]

[0005] In view of this, the embodiments of the present application provide an antenna array and a router to solve the technical problem in the prior art that antennas are difficult to achieve the actual requirements of high gain and wide frequency band.

[0006] In a first aspect, an embodiment of the present application provides an antenna assembly, the antenna assembly comprising a substrate and a plurality of antenna elements, the plurality of antenna elements are arrayed on a same substrate surface of the substrate, and each of the antenna elements extends along a first direction perpendicular to the substrate surface;

[0007] The antenna array includes two array surfaces extending along the first direction and a first end and a second end located at relative positions on the array surfaces along the first direction. The antenna array is connected to the substrate at the first end. A monopole antenna and a slot antenna are arranged on the two array surfaces. The monopole antenna is connected to the first end, and the slot antenna is connected to the second end. Along the second direction perpendicular to the array surface, the projection of the monopole antenna and the projection of the slot antenna overlap with each other.

[0008] Through the solution provided in this embodiment, an antenna array that can support two polarizations is adopted as the basic unit of the antenna array. The dual-polarization isolation between the antenna arrays is high and the bandwidth is large. It supports 5G and Wifi6 signal reception and transmission, and the array arrangement can effectively reduce the volume of the antenna component and also have a good correlation coefficient.

[0009] In the method disclosed in the embodiment of the present application, the two array surfaces are respectively an upper surface metal layer and a lower surface metal layer, an intermediate dielectric layer is provided between the upper surface metal layer and the lower surface metal layer, and the upper surface metal layer and the lower surface metal layer are respectively adhered to the two surfaces of the intermediate dielectric layer.

[0010] Through the solution provided in this embodiment, a three-layer structure of antenna arrays is adopted to achieve high isolation between antenna arrays.

[0011] In the method disclosed in the embodiment of the present application, the monopole antenna includes the upper surface metal layer, a first oscillator and a first feed;

[0012] The slot antenna comprises the upper surface metal layer, a second dipole, a coupling feed source and a second feed;

[0013] The second vibrator is arranged on the upper surface metal layer, and the first vibrator, the coupling feed source, the first feed and the second feed are arranged on the lower surface metal layer;

[0014] The first feed connects the first vibrator to the upper surface metal layer through the first end;

[0015] One end of the coupling feed source is connected to the side of the lower surface metal layer, and the second feed connects the other end of the coupling feed source to the upper surface metal layer through the first end;

[0016] In the second direction, the projections of the first vibrator and the second vibrator overlap with each other, and the projections of the first vibrator and the first feed source overlap with each other.

[0017] The solution provided in this embodiment enables physical isolation between the monopole antenna and the slot antenna.

[0018] In the method disclosed in the embodiment of the present application, the second vibrator includes a first slot structure and a second slot structure, and the first slot structure is connected to the second slot structure in the first direction; in a third direction perpendicular to both the first direction and the second direction, the width of the first slot structure is not less than the width of the second slot structure.

[0019] Through the solution provided in this embodiment, a slot antenna supporting broadband is adopted, so that the antenna element can have very good resonance between 5 and 6 GHz while maintaining high isolation.

[0020] In the method disclosed in the embodiment of the present application, in the second direction, the first slot structure and the first vibrator projection overlap with each other, and the second slot structure and the coupling feed source projection overlap with each other.

[0021] Through the solution provided in this embodiment, a high degree of isolation is maintained between the first vibrator and the second vibrator.

[0022] In the method disclosed in the embodiment of the present application, along the first direction, the first gap structure is a semi-elliptical gap, and the second gap structure is a linear gap;

[0023] The long axis of the first slot structure is parallel to the first direction and is located on the same straight line as the axis of the second slot structure; the first slot structure and the second slot structure are connected at a vertex of the long axis of the first slot structure close to the second end.

[0024] Through the solution provided in this embodiment, the first gap structure is designed as a semi-elliptical gap, which is conducive to generating more surface current, and the second gap structure is conducive to gathering the surface current and forming polarization.

[0025] In the method disclosed in the embodiment of the present application, there is a first spacing between the first vibrators in two adjacent antenna elements, and there is a second spacing between the second vibrators, and the first spacing and the second spacing are the same.

[0026] Through the solution provided in this embodiment, the first oscillators and the second oscillators of each antenna array are arranged at equal intervals.

[0027] In the method disclosed in the embodiment of the present application, the plurality of antenna elements are arranged on the surface of the substrate in one of a 4×4 array, an 8×8 array or a 16×16 array.

[0028] The solution provided by this embodiment can be applied to application scenarios of antennas of various sizes.

[0029] In the method disclosed in the embodiment of the present application, the material of the substrate is metal.

[0030] The solution provided in this embodiment can avoid interference from metal components of electronic products that may affect signal output.

[0031] In a second aspect, an embodiment of the present application provides a router, comprising the antenna assembly as described in the first aspect.

[0032] Compared with the prior art, this technical solution has at least the following beneficial effects:

[0033] The antenna assembly and router disclosed in the embodiments of the present application realize two polarized antennas with high isolation through two types of feeds, support wide-band, dual-polarization scanning, and can provide wide-angle scanning.

Brief Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 is a three-dimensional diagram of an antenna assembly provided in an embodiment of the present application;

[0036] Figure 2 is a side view of a single antenna element in the antenna assembly provided in an embodiment of the present application;

[0037] Figure 3 is a perspective view of a single antenna element in the antenna assembly provided in an embodiment of the present application;

[0038] Figure 4 It is a schematic structural diagram of the upper surface metal layer in a single antenna assembly in the antenna assembly provided in an embodiment of the present application;

[0039] Figure 5 is a side view of the antenna assembly provided by an embodiment of the present application;

[0040] Figure 6 It is a top view of the antenna assembly provided in an embodiment of the present application.

[0041] Reference numerals:

[0042] 1-substrate; 2-antenna element; 3-substrate surface; 4-element surface; 5-first end; 6-second end; 7-monopole antenna; 8-slot antenna; 9-upper surface metal layer; 10-lower surface metal layer; 11-middle dielectric layer; 12-first oscillator; 13-first feed; 14-second oscillator; 15-coupled feed source; 16-second feed; 17-side; 18-first slot structure; 19-second slot structure; a-long axis; b-vertex; x-axis line; S1-first spacing; S2-second spacing; D1-first direction; D2-second direction; D3-third direction. [Specific implementation method]

[0043] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0044] It should be clear that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0045] The embodiment of the present application discloses an antenna assembly, which includes a substrate 1 and a plurality of antenna elements 2. The plurality of antenna elements 2 are arranged in an array on the same substrate surface 3 of the substrate 1, and each antenna element 2 extends along a first direction D1 perpendicular to the substrate surface 3; the antenna element 2 includes two element surfaces 4 extending along the first direction D1 and a first end 5 and a second end 6 located at relative positions on the element surfaces 4 along the first direction D1; the antenna element 2 is connected to the substrate 1 at the first end 5, and a monopole antenna 7 and a slot antenna 8 are arranged on the two element surfaces 4; the monopole antenna 7 is connected to the first end 5, and the slot antenna 8 is connected to the second end 6; along the second direction D2 perpendicular to the element surface 4, the projection of the monopole antenna 7 and the projection of the slot antenna 8 overlap each other. Figure 1 As shown, in the embodiment of the present application, a typical 8×8 array of multiple antenna arrays 2 is taken as an example to explain the technical content of the present application, but it does not represent a limitation on the array form and the number of antenna arrays 2. In order to be applicable to application scenarios of antennas of various sizes, the antenna assembly disclosed in the embodiment of the present application can also be arranged on the substrate surface 3 with multiple antenna arrays 2 in a 4×4 array or a 16×16 array.

[0046] The antenna component of the embodiment of the present application adopts an antenna array 2 that can support two polarizations as the basic unit of the antenna array. The dual-polarization isolation between the antenna arrays 2 is high and the bandwidth is large. It supports 5G and Wifi6 signal reception and transmission, and the array arrangement can effectively reduce the volume of the antenna component and also have a good correlation coefficient.

[0047] like Figure 2As shown, in the antenna assembly disclosed in the embodiment of the present application, the two array surfaces 4 are respectively an upper surface metal layer 9 and a lower surface metal layer 10, and there is an intermediate dielectric layer 11 between the upper surface metal layer 9 and the lower surface metal layer 10, and the upper surface metal layer 9 and the lower surface metal layer 10 are respectively adhered to the two surfaces of the intermediate dielectric layer 11.

[0048] In the antenna assembly of the embodiment of the present application, each antenna element 2 has a three-layer structure, wherein the upper surface metal layer 9 and the lower surface metal layer 10 are the upper and lower surfaces, and the metal used can be copper, gold, aluminum, etc. The middle dielectric layer 11 is attached in the middle to produce isolation, and the dielectric used can be FR4, PU (Polyurethane), ABS (Acrylonitrile butadiene Styrene copolymers, acrylonitrile-butadiene-styrene copolymers), etc. The antenna element 2 with a three-layer structure realizes high isolation between the antenna elements 2.

[0049] like Figure 3 As shown, in the antenna assembly disclosed in the embodiment of the present application, the monopole antenna 7 includes an upper surface metal layer 9, a first vibrator 12 and a first feed 13; the slot antenna 8 includes an upper surface metal layer 9, a second vibrator 14, a coupling feed 15 and a second feed 16; the second vibrator 14 is arranged on the upper surface metal layer 9, and the first vibrator 12, the coupling feed 15, the first feed 13 and the second feed 16 are arranged on the lower surface metal layer 10; the first feed 13 connects the first vibrator 12 to the upper surface metal layer 9 through the first end 5; one end of the coupling feed 15 is connected to the side 17 of the lower surface metal layer 10, and the second feed 16 connects the other end of the coupling feed 15 to the upper surface metal layer 9 through the first end 5; in the second direction D2, the projections of the first vibrator 12 and the second vibrator 14 overlap with each other, and the projections of the first vibrator 12 and the first feed overlap with each other.

[0050] In the antenna assembly of the embodiment of the present application, the first feed 13 and the second feed 16 are both located at the first end 5, the first oscillator 12 is connected to the first end 5 through the first feed 13, and the coupling feed source 15 is connected to the first end 5 through the second feed 16, so that when necessary, a connector such as SMA (SubMiniature version A connector, SMA interface) or TNC can be directly welded on the other side of the substrate 1 opposite to the substrate surface 3 to connect the phase shifting unit, so that there is physical isolation between the monopole antenna 7 and the slot antenna 8.

[0051] like Figure 4As shown, in the antenna assembly disclosed in the embodiment of the present application, the second oscillator 14 includes a first slot structure 18 and a second slot structure 19, and the first slot structure 18 is connected to the second slot structure 19 in a first direction D1; in a third direction D3 perpendicular to both the first direction D1 and the second direction D2, the width of the first slot structure 18 is not less than the width of the second slot structure 19.

[0052] The antenna assembly of the embodiment of the present application adopts a slot antenna 8 that supports broadband, so that the antenna element 2 can have very good resonance between 5 and 6 GHz while maintaining high isolation.

[0053] In the antenna assembly disclosed in the embodiment of the present application, in the second direction D2, the projections of the first slot structure 18 and the first vibrator 12 overlap with each other, and the projections of the second slot structure 19 and the coupling feed source 15 overlap with each other.

[0054] The antenna assembly of the embodiment of the present application maintains a high degree of isolation between the first vibrator 12 and the second vibrator 14 .

[0055] In the antenna assembly disclosed in the embodiment of the present application, along the first direction D1, the first slot structure 18 is a semi-elliptical slot, and the second slot structure 19 is a linear slot; the long axis a of the first slot structure 18 is parallel to the first direction D1 and is located on the same straight line as the axis x of the second slot structure 19; the first slot structure 18 and the second slot structure 19 are connected at the vertex b of the long axis a of the first slot structure 18 close to the second end 6.

[0056] In the antenna assembly of the embodiment of the present application, the first slot structure 18 is designed as a semi-elliptical slot, which is beneficial to generating more surface currents, and the second slot structure 19 is beneficial to gathering the surface currents and forming polarization.

[0057] like Figure 5 and Figure 6 As shown, combined with Figure 1 In the antenna assembly disclosed in the embodiment of the present application, there is a first spacing S1 between the first oscillators 12 in two adjacent antenna arrays 2, and there is a second spacing S2 between the second oscillators 14, and the first spacing S1 and the second spacing S2 are the same.

[0058] In the antenna assembly of the embodiment of the present application, the first oscillators 12 and the second oscillators 14 of each antenna array 2 are arranged at equal intervals.

[0059] In the antenna assembly disclosed in the embodiment of the present application, the material of the substrate 1 is metal.

[0060] The antenna assembly of the embodiment of the present application can avoid being interfered by metal components of electronic products and affecting the output of signals.

[0061] An embodiment of the present application also provides a router, comprising the antenna assembly described above.

[0062] The antenna assembly and router disclosed in the embodiments of the present application realize two polarized antennas with high isolation through two types of feeds, support wide-band, dual-polarization scanning, and can provide wide-angle scanning.

[0063] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An antenna assembly, characterized in that: The antenna assembly includes a substrate and a plurality of antenna elements, wherein the plurality of antenna elements are arranged in an array on a same substrate surface of the substrate, and each of the antenna elements extends along a first direction perpendicular to the substrate surface; The antenna array comprises two array surfaces extending along the first direction and a first end and a second end located at opposite positions on the array surfaces along the first direction, the antenna array is connected to the substrate at the first end, a monopole antenna and a slot antenna are arranged on the two array surfaces, the monopole antenna is connected to the first end, the slot antenna is connected to the second end, and along a second direction perpendicular to the array surface, a projection of the monopole antenna and a projection of the slot antenna overlap each other; The two array surfaces are respectively an upper surface metal layer and a lower surface metal layer, an intermediate dielectric layer is provided between the upper surface metal layer and the lower surface metal layer, and the upper surface metal layer and the lower surface metal layer are respectively attached to two surfaces of the intermediate dielectric layer; The monopole antenna comprises the upper surface metal layer, a first dipole and a first feed; The slot antenna comprises the upper surface metal layer, a second dipole, a coupling feed source and a second feed; The second vibrator is arranged on the upper surface metal layer, and the first vibrator, the coupling feed source, the first feed and the second feed are arranged on the lower surface metal layer; The first feed connects the first vibrator to the upper surface metal layer through the first end; One end of the coupling feed source is connected to the side of the lower surface metal layer, and the second feed connects the other end of the coupling feed source to the upper surface metal layer through the first end; In the second direction, the projections of the first vibrator and the second vibrator overlap with each other, and the projections of the first vibrator and the first feed source overlap with each other.

2. The antenna assembly according to claim 1, characterized in that: The second vibrator includes a first slot structure and a second slot structure, and the first slot structure is connected to the second slot structure in the first direction; In a third direction perpendicular to both the first direction and the second direction, a width of the first gap structure is not less than a width of the second gap structure.

3. The antenna assembly according to claim 2, characterized in that: In the second direction, the first slot structure and the first vibrator projection overlap with each other, and the second slot structure and the coupling feed source projection overlap with each other.

4. The antenna assembly according to claim 3, characterized in that: Along the first direction, the first slit structure is a semi-elliptical slit, and the second slit structure is a linear slit; the long axis of the first slit structure is parallel to the first direction and is located on the same straight line as the axis of the second slit structure; The first slot structure and the second slot structure are connected at a vertex of the long axis of the first slot structure close to the second end.

5. The antenna assembly according to claim 1, characterized in that: There is a first spacing between the first oscillators in two adjacent antenna elements, and there is a second spacing between the second oscillators, and the first spacing and the second spacing are the same.

6. The antenna assembly according to claim 1, characterized in that: The plurality of antenna elements are arranged on the surface of the substrate in one of a 4×4 array, an 8×8 array or a 16×16 array.

7. The antenna assembly according to claim 1, characterized in that: The material of the substrate is metal.

8. A router, characterized in that: Comprising the antenna assembly according to any one of claims 1 to 7.

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