CN115528426A - Antenna array and router - Google Patents

Abstract

The embodiment of the application discloses an antenna assembly and a router, wherein the antenna assembly comprises a substrate and a plurality of antenna arrays, the antenna arrays are arranged on the surface of the same substrate of the substrate, and each antenna array extends along a first direction vertical to the surface of the substrate; antenna array includes along two array surfaces that first direction extends and along first direction to be located the first end and the second end of array sub-surface relative position, and antenna array and substrate connection are in first end, and two arrays are provided with monopole antenna and slot antenna on the surface, and monopole antenna connects in first end, and slot antenna connects at the second end, along the second direction on perpendicular to array surface, and monopole antenna's projection and slot antenna's projection overlap each other. According to the technical scheme disclosed by the embodiment of the application, two high-isolation polarized antennas are realized through two kinds of feeds, broadband and dual-polarized scanning is supported, and wide-angle scanning can be provided.

Description

Antenna Arrays and Routers

【Technical field】

The present application relates to the technical field of wireless communication, and in particular to an antenna array and a router.

【Background technique】

Traditional scanning array antennas generally use dipoles, monopoles, and Vivaldi elements (Vivaldi is a slot microstrip antenna that controls electromagnetic waves to radiate electromagnetic energy from one end of the slot to the opening end by using an exponential slot structure), etc., with mechanical The structure adjusts the main lobe of the antenna, and there is also a way to control the direction of the main lobe through the phase. In comparison, phase control has the advantages of high precision, high sensitivity, and precise scanning angle.

For the element oscillators of the array, if you want to achieve high isolation between different antennas, the usual methods are similar to increasing the physical distance between different antennas, adding decoupling networks, and polarization differences.

Support 5G (5th Generation Mobile Communication Technology, fifth-generation communication technology) and WIFI6 (formerly known as: IEEE 802.11.ax, the sixth-generation wireless network technology, is the name of the Wi-Fi standard. It was created by the Wi-Fi Alliance in IEEE 802.11 standard wireless local area network technology.) means that there need to be two or more antennas in very adjacent frequency bands such as 5G n79 frequency band antennas (4.4~5GHz) and WIFI 5GHz antennas; or two same-frequency WIFI 5GHz or two same-frequency n79 antennas work at the same time to ensure that MIMO (multiple input multiple output, multiple input multiple output) takes effect. If multiple antennas in 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., which can be used to solve this problem. The more common way to solve the problem is to give different antennas a physical separation.

【Content of invention】

In view of this, an embodiment of the present application provides an antenna array and a router, which are used to solve the technical problem in the prior art that it is difficult for antennas to achieve high-gain and wide-band practical requirements.

In the first aspect, the embodiment of the present application provides an antenna assembly, the antenna assembly includes a substrate and a plurality of antenna elements, the array of the plurality of antenna elements is arranged on the same substrate surface of the substrate, and each of the The antenna element extends along a first direction perpendicular to the surface of the substrate;

The antenna element includes two element surfaces extending along the first direction, and a first end and a second end located opposite to the element surface along the first direction, and the antenna element is connected to the substrate on At the first end, the two elements are provided with a monopole antenna and a slot antenna on the surface, the monopole antenna is connected to the first end, and the slot antenna is connected to the second end, along the vertical In the second direction of the surface of the element, the projection of the monopole antenna and the projection of the slot antenna overlap each other.

Through the solution provided by this embodiment, the antenna element that can support two polarizations is used as the basic unit of the antenna array. The dual-polarization isolation between the antenna elements is high, the bandwidth is large, and the signal transmission and reception of 5G and Wifi6 are supported, and the array The arrangement can effectively reduce the volume of the antenna component and also have a good correlation coefficient.

In the method disclosed in the embodiments of the present application, the two substrate surfaces are respectively an upper metal layer and a lower metal layer, and there is an intermediate dielectric layer between the upper metal layer and the lower metal layer, and the The upper surface metal layer and the lower surface metal layer are attached to the two surfaces of the intermediate dielectric layer respectively.

Through the solution provided in this embodiment, antenna elements with a three-layer structure are used to achieve high isolation between antenna elements.

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

The slot antenna includes the upper surface metal layer, a second dipole, a coupling feed and a second feed;

The second vibrator is disposed on the upper metal layer, and the first vibrator, the coupling feed, the first power feed, and the second power feed are disposed on the lower 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 is connected to the side of the lower surface metal layer, and the second feed connects the other end of the coupling feed to the upper surface metal layer through the first end;

In the second direction, projections of the first oscillator and the second oscillator overlap each other, and projections of the first oscillator and the first feed source overlap each other.

Through the solution provided by this embodiment, there is physical isolation between the monopole antenna and the slot antenna.

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 and the second slot structure are connected in the first direction; In a third direction perpendicular to both the first direction and the second direction, the width of the first slit structure is not smaller than the width of the second slit structure.

Through the solution provided by this embodiment, the slot antenna supporting broadband is used, so that the antenna element can have a very good resonance between 5-6 GHz while maintaining high isolation.

In the method disclosed in the embodiment of the present application, in the second direction, the first slot structure and the first dipole projection overlap each other, and the second slot structure and the coupling feed projection overlap each other. stack.

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

In the method disclosed in the embodiment of the present application, 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 on the same line as the axis of the second slit structure; the first slit structure and the second slit structure are connected to the first The vertex of the long axis of the slit structure is close to the second end.

Through the solution provided by this embodiment, the design of the first slit structure as a semi-elliptical slit is conducive to generating more surface current, and the second slit structure is conducive to gathering the surface current and forming polarization.

In the method disclosed in the embodiment of the present application, there is a first spacing between the first dipoles in two adjacent antenna elements, a second spacing between the second dipoles, and the first spacing and the second The spacing is the same.

Through the solution provided by this embodiment, the first dipoles and the second vibrators of each antenna element are arranged at equal intervals.

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.

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

In the methods disclosed in the embodiments of the present application, the material of the substrate is metal.

Through the solution provided by this embodiment, it is possible to avoid being interfered by the metal components of the electronic product and affecting the output of the signal.

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

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

The antenna assembly and the router disclosed in the embodiments of the present application implement two kinds of high-isolation polarized antennas through two kinds of feeds, support wide-band, dual-polarized scanning and provide wide-angle scanning.

【Description of drawings】

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a perspective view of an antenna assembly provided by an embodiment of the present application;

Fig. 2 is a side view of a single antenna element in the antenna assembly provided by the embodiment of the present application;

Fig. 3 is a perspective view of a single antenna element in the antenna assembly provided by the embodiment of the present application;

Fig. 4 is a schematic structural diagram of the upper surface metal layer of a single antenna component in the antenna component provided by the embodiment of the present application;

Fig. 5 is a side view of the antenna assembly provided by the embodiment of the present application;

Fig. 6 is a top view of the antenna assembly provided by the embodiment of the present application.

Reference signs:

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-intermediate dielectric layer; 12-first oscillator; 13-first feed; 14-second oscillator; 15-coupling feed; 16-second feed; 17-side; 18 -first gap structure; 19-second gap structure; a-major axis; b-vertex; x-axis; S1-first spacing; S2-second spacing; D1-first direction; D2-second direction; D3 - third direction.

【detailed description】

In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The embodiment of the present application discloses an antenna assembly. The antenna assembly includes a substrate 1 and a plurality of antenna elements 2. The plurality of antenna elements 2 are arrayed on the same substrate surface 3 of the substrate 1, and each antenna element 2 is perpendicular to the The first direction D1 of the substrate surface 3 extends; 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 opposite positions of the element surface 4 along the first direction D1, the antenna The element 2 and the substrate 1 are connected to the first end 5, and the two element surfaces 4 are provided with a monopole antenna 7 and a slot antenna 8, 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 surface 4 of the element, the projection of the monopole antenna 7 and the projection of the slot antenna 8 overlap each other. As shown in Figure 1, in the embodiment of this application, a typical 8×8 array of multiple antenna elements 2 is used as an example to explain the technical content of this application, but it does not represent a limitation on the array form and the number of antenna elements 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 a plurality of antenna elements 2 in a 4×4 array or a 16×16 array.

The antenna assembly of the embodiment of the present application adopts the antenna element 2 capable of supporting two polarizations as the basic unit of the antenna array. The dual-polarization isolation between the antenna elements 2 is high, the bandwidth is large, and the signal transmission and reception of 5G and Wifi6 are supported. Moreover, the array arrangement can effectively reduce the volume of the antenna component and also have a good correlation coefficient.

As shown in FIG. 2, in the antenna assembly disclosed in the embodiment of the present application, the two element surfaces 4 are respectively an upper surface metal layer 9 and a lower surface metal layer 10, and there is a metal layer between the upper surface metal layer 9 and the lower surface metal layer 10. The intermediate dielectric layer 11 , the upper surface metal layer 9 and the lower surface metal layer 10 are attached to the two surfaces of the intermediate dielectric layer 11 respectively.

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 may be copper, gold, aluminum, etc. , the intermediate dielectric layer 11 is attached in the middle for isolation, and the medium used can be FR4, PU (Polyurethane, polyurethane), ABS (Acrylonitrile butadiene Styrene copolymers, acrylonitrile-butadiene-styrene copolymer), etc. . The antenna elements 2 with a three-layer structure are used to achieve high isolation between the antenna elements 2 .

As shown in Figure 3, 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 Two oscillators 14, coupling feed 15 and second feed 16; the second oscillator 14 is set on the upper surface metal layer 9, and the first oscillator 12, coupling feed 15, first feed 13 and second feed 16 are set 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 Connect 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 oscillator 12 and the second oscillator 14 overlap each other, and the first oscillator 12 and the first feed source The projections overlap each other.

In the antenna assembly of the embodiment of the present application, both the first feed 13 and the second feed 16 are located at the first end 5, the first vibrator 12 is connected to the first end 5 through the first feed 13, and the coupling feed 15 is connected to the first end 5 through the second feed. Electricity 16 is connected to the first end 5, so that the other side opposite to the substrate surface 3 on the substrate 1 can directly weld SMA (SubMiniature version Aconnector, SMA interface) or TNC and other connectors when needed to connect the phase shifter unit, so that there is physical isolation between the monopole antenna 7 and the slot antenna 8 .

As shown in FIG. 4, in the antenna assembly disclosed in the embodiment of the present application, the second vibrator 14 includes a first slot structure 18 and a second slot structure 19, and the first slot structure 18 and the second slot structure 19 are in the first direction D1 The upper phase is connected; in the third direction D3 perpendicular to the first direction D1 and the second direction D2, the width of the first slit structure 18 is not smaller than the width of the second slit structure 19 .

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

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 dipole 12 overlap each other, and the projections of the second slot structure 19 and the coupling feed 15 overlap each other.

The antenna assembly of the embodiment of the present application maintains high isolation between the first dipole 12 and the second dipole 14 .

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 the same as the first The direction D1 is parallel to and on the same line as the axis x of the second slit structure 19 ; the first slit structure 18 and the second slit structure 19 are connected to the vertex b of the long axis a of the first slit structure 18 near the second end 6 .

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 generate more surface current, and the second slot structure 19 is beneficial to gather the surface current and form polarization.

As shown in Figure 5 and Figure 6, 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 dipoles 12 in two adjacent antenna elements 2, and the second dipoles 14 There is a second spacing S2 between them, and the first spacing S1 and the second spacing S2 are the same.

In the antenna assembly of the embodiment of the present application, the first vibrator 12 and the second vibrator 14 of each antenna element 2 are arranged at equal intervals.

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

The antenna assembly of the embodiment of the present application can avoid being interfered by the metal assembly of the electronic product and affecting the output of the signal.

An embodiment of the present application also provides a router, including the antenna assembly described above.

The antenna assembly and the router disclosed in the embodiments of the present application implement two kinds of high-isolation polarized antennas through two kinds of feeds, support wide-band, dual-polarized scanning and provide wide-angle scanning.

The above are only preferred embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the protection of the application. within range.

Claims (10)

1. An antenna assembly, characterized in that the antenna assembly comprises a substrate and a plurality of antenna arrays, the plurality of antenna arrays are arranged on the same substrate surface of the substrate, and each antenna array extends along a first direction perpendicular to the substrate surface;

the antenna array includes the edge two array surfaces that first direction extends and follows first direction is located array surface relative position's first end and second end, the antenna array with the base plate connect in first end, two array are provided with monopole antenna and slot antenna on the surface, monopole antenna connects first end, slot antenna connects the second end is followed the perpendicular to the second direction on array surface, monopole antenna's projection with slot antenna's projection overlaps each other.

2. The antenna assembly of claim 1, wherein the two array surfaces are an upper surface metal layer and a lower surface metal layer, respectively, an intermediate dielectric layer is disposed 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.

3. The antenna assembly of claim 2, wherein the monopole antenna includes the upper surface metal layer, a first element, and a first feed;

the slot antenna comprises the upper surface metal layer, a second oscillator, a coupling feed source and a second feed;

the second oscillator is arranged on the upper surface metal layer, and the first oscillator, 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 element to the upper surface metal layer through the first end;

one end of the coupling feed source is connected to the side edge of the lower surface metal layer, and the second feed source connects the other end of the coupling feed source to the upper surface metal layer through the first end;

in the second direction, the first oscillator and the second oscillator overlap in projection, and the first oscillator and the first feed source overlap in projection.

4. The antenna assembly of claim 3, characterized in that the second element comprises a first slot structure and a second slot structure, the first slot structure and the second slot structure being connected in the first direction; in a third direction perpendicular to both the first direction and the second direction, a width of the first slit structure is not smaller than a width of the second slit structure.

5. The antenna assembly of claim 4, wherein in the second direction the first slot structure overlaps the first element projection and the second slot structure overlaps the coupling feed projection.

6. The antenna assembly of claim 5, wherein along the first direction, the first slot structure is a semi-elliptical slot and the second slot structure is a linear slot; the long axis of the first slit structure is parallel to the first direction and is positioned on the same straight line with the axis of the second slit structure; the first slit structure and the second slit structure are connected to a vertex of the long axis of the first slit structure, which is close to the second end.

7. The antenna assembly of claim 3, wherein a first spacing is provided between first elements and a second spacing is provided between second elements of two adjacent antenna arrays, and wherein the first spacing and the second spacing are the same.

8. The antenna assembly of claim 1, wherein the plurality of antenna elements are arranged in one of a 4 x 4 array, an 8 x 8 array, or a 16 x 16 array on the substrate surface.

9. The antenna assembly of claim 1, wherein the material of the substrate is a metal.

10. A router comprising the antenna assembly of any one of claims 1 to 9.

Images