CN214957329U - Antenna assembly - Google Patents
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- CN214957329U CN214957329U CN202120728936.1U CN202120728936U CN214957329U CN 214957329 U CN214957329 U CN 214957329U CN 202120728936 U CN202120728936 U CN 202120728936U CN 214957329 U CN214957329 U CN 214957329U
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Abstract
The application relates to an antenna assembly, wherein the antenna assembly comprises a substrate and at least two antenna units, each antenna unit comprises a slot antenna and a monopole antenna, the slot antennas and the monopole antennas are respectively arranged on two opposite sides of the substrate, and in projection along the thickness direction of the substrate, a projected part of each monopole antenna is located in a projection range of the slot antenna. The design can reduce the whole installation area of the antenna unit, thereby being beneficial to reducing the volume of the antenna component.
Description
Technical Field
The application relates to the technical field of communication, in particular to an antenna assembly.
Background
With the development of the technology, the requirements of various terminal products of people are higher and higher, with the increasing number of functional modules of the terminal, the space environment for installing the antenna in the terminal is smaller and smaller, and due to the development of a Multiple Input Multiple Output (MIMO) technology, the number of the antennas is larger and larger, so that the layout of the antenna is difficult, and the size of the antenna assembly is larger.
SUMMERY OF THE UTILITY MODEL
The application provides an antenna assembly for providing a new antenna assembly structure to reduce the volume of the antenna assembly.
An embodiment of the present application provides an antenna assembly, the antenna assembly includes:
a substrate;
at least two antenna units disposed on the substrate;
the antenna unit comprises a slot antenna and a monopole antenna, the slot antenna and the monopole antenna are arranged on two opposite sides of the substrate, and in projection along the thickness direction of the substrate, a projected part of the monopole antenna is located in the projection range of the slot antenna.
In a possible implementation manner, the slot antenna includes a first gap, a second gap, and a radiator, where the first gap and the second gap are disposed on the substrate, the first gap is communicated with the second gap, and a width of the second gap gradually increases along a direction away from the first gap, and the radiator is located in the second gap.
In one possible embodiment, a projected portion of the monopole antenna is located within a projected range of the first gap in a projection in a thickness direction of the substrate.
In one possible embodiment, the substrate includes a metal ground, the metal ground is disposed on a side of the substrate having the slot antenna, and the first gap and the second gap are disposed on the metal ground.
In a possible embodiment, the antenna assembly includes two antenna units, and the slot antennas have a predetermined included angle therebetween, and the monopole antennas have a predetermined included angle therebetween.
In one possible implementation, the slot antennas are perpendicular to each other, and the monopole antennas are perpendicular to each other.
In one possible embodiment, the antenna assembly further comprises a transmission line connected to the substrate;
the transmission line and the substrate are of an integral structure.
In a possible embodiment, a transition structure is provided between the substrate and the transmission line.
In a possible embodiment, the cross-sectional area of the transition structure increases gradually in a direction towards the substrate.
In a possible embodiment, at least part of the transmission line is a microstrip line, which forms a strip-ground coplanar waveguide structure with the metal of the substrate.
The application provides an antenna assembly, wherein, antenna assembly includes base plate and two at least antenna element, and antenna element includes slot antenna and monopole antenna, and slot antenna and monopole antenna set up respectively in the relative both sides of base plate, and in the projection along the thickness direction of base plate, the part of monopole antenna's projection lies in slot antenna's projection range. The design can reduce the whole installation area of the antenna unit, thereby being beneficial to reducing the volume of the antenna component
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a schematic structural diagram of an antenna assembly provided in an embodiment of the present application;
FIG. 2 is a dimension scale of FIG. 1;
fig. 3 is a graph of S11 performance of an antenna assembly provided by an embodiment of the present application;
fig. 4 is a simulation result of isolation of the antenna assembly according to the embodiment of the present application.
Reference numerals:
1-a substrate;
11-metal ground;
2-an antenna element;
21-a slot antenna;
211 — a first gap;
212-a second gap;
213-a radiator;
22-a monopole antenna;
3-a transmission line;
4-transition structure.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
With the development of the technology, the requirements of various terminal products of people are higher and higher, with the increasing number of functional modules of the terminal, the space environment for installing the antenna in the terminal is smaller and smaller, and due to the development of a Multiple Input Multiple Output (MIMO) technology, the number of the antennas is larger and larger, so that the layout of the antenna is difficult, and the size of the antenna assembly is larger. Most of the existing MIMO decoupling technology adds structures such as defected ground, a neutral wire, a parasitic unit and the like between antennas for decoupling. Besides, polarization diversity and spatial diversity principles are also applied to antenna decoupling designs. The above methods are all to arrange the unit antennas in a certain way, and then reduce the distance of the unit antennas by decoupling design to reduce the size of the MIMO antenna. How to realize a high-isolation multi-antenna system in a smaller space is a current challenge.
In view of this, the present application provides an antenna assembly for providing a new structure of the antenna assembly to reduce the overall volume of the antenna assembly.
As shown in fig. 1, the present embodiment provides an antenna assembly, which may be a WiFi terminal MIMO antenna, and includes a substrate 1 and at least two antenna units 2, where the antenna units 2 include a slot antenna 21 and a monopole antenna 22, and the slot antenna 21 and the monopole antenna 22 are disposed on two opposite sides of the substrate 1, and the monopole antenna 22 is located on the other side of the substrate 1 and indicated by a dotted line. And in the projection in the thickness direction of the substrate 1, the projected portion of the monopole antenna 22 is located within the projection range of the slot antenna 21.
By such a design, the mounting area required for the entire antenna unit 2 can be reduced, the size of the substrate 1 can be reduced, and the entire size of the antenna assembly can be reduced.
As shown in fig. 1, in a possible embodiment, the slot antenna 21 includes a first gap 211, a second gap 212 and a radiator 213, where the first gap 211 and the second gap 212 are disposed on the substrate 1, and a width of the second gap 212 gradually increases along a direction away from the first gap 211, that is, the second gap 212 may be disposed in a tapered shape, and sidewalls of the second gap 212 may be linear or arc-shaped, and may be specifically disposed according to actual requirements.
The performance requirement of the slot antenna 21 can be met through the design, so that the stability of signals transmitted and received by the slot antenna 21 is improved, and the practical use requirement is met better.
As shown in fig. 1, in one possible embodiment, in a projection in the thickness direction of the substrate 1, a projected portion of the monopole antenna 22 is located within a projection range of the first gap 211, and the monopole antenna 22 and the first gap 211 are disposed perpendicular to each other. Specifically, the side of the substrate 1 on which the slot antenna 21 is mounted may be provided with a metal ground 11, specifically, the metal ground 11 may be a metal layer or the like, the first gap 211 and the second gap 212 may be provided in the metal ground 11, and the metal ground 11 may be used for grounding or the like.
Through the design, the first gap 211 can be used for cutting off the current of the microstrip line on the substrate 1, specifically, the first gap 211 is used for cutting off the current of the metal ground 11, so as to generate electromagnetic radiation, and the generated electromagnetic radiation can generate orthogonal mode characteristics for the magnetic current along the gap direction, the magnetic current and the current of the monopole antenna 22, so that the isolation degree is good, and the signal quality of the antenna is improved.
In one possible embodiment, as shown in fig. 1, the antenna assembly comprises two antenna elements 2, wherein the slot antennas 21 of each antenna element 2 have a predetermined angle therebetween and the monopole antennas 22 have a predetermined angle therebetween.
By the design, good isolation degree can be achieved between the antenna units 2, and therefore the overall performance of the antenna assembly is improved.
In one possible embodiment, the slot antennas 21 are perpendicular to each other and the monopole antennas 22 are perpendicular to each other, as shown in fig. 1.
Through the design, the antenna units 2 can be subjected to orthogonal stitching, so that the polarization of the two groups of antenna units 2 has orthogonal characteristics, and finally the antenna units 2 in the embodiment of the application have good isolation.
The present embodiment also optimizes the size of the antenna assembly, as shown in fig. 2. in one possible embodiment, the length L1 of the monopole antenna 22 is between 10 mm and 14 mm, preferably 12 mm. The length L2 of the first gap 211 is between 12 mm and 16 mm, preferably 14 mm. The width of the second gap 212 on the side facing away from the first gap 211 is between 12 mm and 16 mm, preferably 14 mm. The length of the radiator 213 ranges between 6 mm and 9 mm, preferably 7.5 mm. The above preferred dimensions are only one specific implementation provided in the examples of the present application, and in practical use, the dimensions may be adjusted according to practical requirements.
As shown in fig. 1, in one possible embodiment, the antenna assembly further comprises a transmission line 3, the transmission line 3 being connected to the substrate 1, in particular, the transmission line 3 being designed integrally with the substrate 1.
The structural space of the antenna assembly can be reduced through the design, so that the structure of the antenna assembly is optimized, and the whole volume of the antenna assembly is reduced.
As shown in fig. 1, in a possible embodiment, a transition structure 4 is provided between the substrate 1 and the transmission line 3, so that the antenna assembly can obtain stable impedance matching, thereby improving the signal quality of the antenna assembly.
In particular, as shown in fig. 1, in one possible embodiment, the cross-sectional area of the transition structure 4 gradually increases in a direction approaching the substrate 1.
Through the design, the transition structure 4 can form a gradual change structure, the change of the sectional area can be more uniform, and the antenna assembly can obtain stable impedance.
In a possible embodiment, at least part of the transmission line 3 is a microstrip line, the substrate 1 is provided with a metal ground 11, and the microstrip line and the metal ground 11 can form a strip-ground coplanar waveguide structure.
By the design, the isolation between the antenna units 2 can be improved, so that the possibility of mutual interference between the antenna units 2 can be reduced, the stability of receiving and sending signals of the antenna units 2 is improved, and the overall performance of the antenna is improved.
The width of the transmission line 3 can be optimized and in a possible embodiment the width of the transmission line 3 can be 0.2 mm.
The antenna assembly provided by the embodiment of the application can be integrated on a circuit board, and the feed structure can be directly led out by a radio frequency line.
As shown in fig. 3 and 4, for an S11 diagram obtained by performing CST simulation on the antenna assembly provided by the embodiment of the present application, where as shown in fig. 3, the abscissa of the diagram is frequency, and the ordinate of the diagram is return loss, it can be seen from fig. 3 that, in the antenna assembly provided by the embodiment of the present application, the slot antenna 21 generates resonance in two frequency bands, namely, WiFi 2.4GHz and 5GHz, and the monopole antenna 22 generates resonance in a WiFi 5GHz frequency band, so that the antenna provided by the embodiment of the present application can meet normal use requirements. As shown in fig. 4, it can be seen from fig. 4 that the isolation performance of the antenna assembly provided in the embodiment of the present application is better than 19dB in the operating frequency band, so that the antenna assembly can be used in a WiFi terminal supporting WiFi 5G 4 x 4MIMO + WiFi 2.4G 2 x 2MIMO, that is, the antenna assembly meets the actual use requirement.
The embodiment of the application provides an antenna assembly, wherein, the antenna assembly includes base plate 1 and at least two antenna elements 2, antenna element 2 includes slot antenna 21 and monopole antenna 22, and slot antenna 21 and monopole antenna 22 set up respectively in the relative both sides of base plate 1, and in the projection along the thickness direction of base plate 1, the part of the projection of monopole antenna 22 is located the projection range of slot antenna 21. By such a design, the entire installation area of the antenna unit 2 can be reduced, which is advantageous for reducing the size of the antenna assembly.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An antenna assembly, characterized in that the antenna assembly comprises:
a substrate (1);
at least two antenna units (2), the antenna units (2) being arranged on the substrate (1);
wherein the antenna unit (2) comprises a slot antenna (21) and a monopole antenna (22), the slot antenna (21) and the monopole antenna (22) are arranged on two opposite sides of the substrate (1), and in a projection along the thickness direction of the substrate (1), a part of the projection of the monopole antenna (22) is located within a projection range of the slot antenna (21).
2. An antenna assembly according to claim 1, characterized in that the slot antenna (21) comprises a first gap (211), a second gap (212) and a radiator (213), the first gap (211) and the second gap (212) being arranged at the substrate (1), the first gap (211) communicating with the second gap (212) and the width of the second gap (212) gradually increasing in a direction away from the first gap (211), the radiator (213) being located at the second gap (212).
3. Antenna assembly according to claim 2, characterized in that, in a projection in the thickness direction of the substrate (1), the projected part of the monopole antenna (22) is located within the projection of the first gap (211).
4. Antenna assembly according to claim 2, characterized in that the substrate (1) comprises a metal ground (11), the metal ground (11) being arranged on the side of the substrate (1) having the slot antenna (21), the first gap (211) and the second gap (212) being arranged on the metal ground (11).
5. An antenna assembly according to claim 1, characterized in that the antenna assembly comprises two antenna elements (2), and that the slot antennas (21) have a predetermined angle therebetween and the monopole antennas (22) have a predetermined angle therebetween.
6. An antenna assembly according to claim 5, characterized in that the slot antennas (21) are perpendicular to each other and the monopole antennas (22) are perpendicular to each other.
7. An antenna assembly according to any one of claims 1 to 6, characterized in that it further comprises a transmission line (3), the transmission line (3) being connected to a substrate (1);
the transmission line (3) and the substrate (1) are of an integrated structure.
8. An antenna component according to claim 7, characterized in that a transition structure (4) is arranged between the substrate (1) and the transmission line (3).
9. Antenna assembly according to claim 8, characterized in that the cross-sectional area of the transition structure (4) increases gradually in the direction towards the substrate (1).
10. Antenna assembly according to claim 7, characterized in that at least part of the transmission line (3) is a microstrip line forming a strip-ground coplanar waveguide structure with the metallic ground (11) of the substrate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120728936.1U CN214957329U (en) | 2021-04-09 | 2021-04-09 | Antenna assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120728936.1U CN214957329U (en) | 2021-04-09 | 2021-04-09 | Antenna assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214957329U true CN214957329U (en) | 2021-11-30 |
Family
ID=79044981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120728936.1U Active CN214957329U (en) | 2021-04-09 | 2021-04-09 | Antenna assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214957329U (en) |
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2021
- 2021-04-09 CN CN202120728936.1U patent/CN214957329U/en active Active
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