CN214378853U - Antenna assembly and wireless device - Google Patents
Antenna assembly and wireless device Download PDFInfo
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- CN214378853U CN214378853U CN202022895125.9U CN202022895125U CN214378853U CN 214378853 U CN214378853 U CN 214378853U CN 202022895125 U CN202022895125 U CN 202022895125U CN 214378853 U CN214378853 U CN 214378853U
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Abstract
The utility model discloses an antenna assembly and wireless device. The antenna assembly includes: a first ground plate; a second ground plate disposed on the first ground plate; the dielectric substrate is fixedly connected with the second grounding plate; a first antenna disposed on the first ground plane; a second antenna disposed on the dielectric substrate; wherein the first antenna comprises a first radiating element and the second antenna comprises a second radiating element, the first radiating element being substantially parallel to the first ground plane and the second radiating element being substantially perpendicular to the first ground plane. Because the polarization directions of the first antenna and the second antenna are vertical in the antenna assembly, the signal interference between the first antenna and the second antenna is small, and the isolation degree is high.
Description
Technical Field
The utility model belongs to the technical field of the antenna, concretely relates to antenna assembly and wireless device.
Background
With the development of wireless communication technology, antennas have gained wide application and important technological progress as indispensable components in wireless communication equipment. The antenna functions to realize data communication by performing energy conversion of electromagnetic waves between a wireless transmitter and a wireless receiver, and thus at least one antenna is provided in a general wireless product. But this also brings new problems: there is mutual interference between the antennas. In order to reduce mutual interference, it is generally necessary to increase the isolation between the multiple antennas. The isolation between the plurality of antennas can be improved by increasing the antenna spatial distance, but increasing the antenna spatial distance tends to increase the product size, and thus the antenna spatial distance that can be increased tends to be limited.
Therefore, under the condition that the space distance of the antennas is constant, how to improve the isolation between the antennas is a considerable problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an antenna assembly spare, under the certain circumstances of antenna spatial distance, the isolation between a plurality of antennas improves greatly.
According to a first aspect of the present invention, there is provided an antenna assembly, comprising:
a first ground plate;
a second ground plate disposed on the first ground plate;
the dielectric substrate is fixedly connected with the second grounding plate;
a first antenna disposed on the first ground plane;
a second antenna disposed on the dielectric substrate;
wherein the first antenna comprises a first radiating element and the second antenna comprises a second radiating element, the first radiating element being substantially parallel to the first ground plane and the second radiating element being substantially perpendicular to the first ground plane.
Optionally, the first radiating element is electrically coupled to the first ground plate via a first ground element, and the second radiating element is electrically coupled to the second ground plate via a second ground element.
Optionally, the first ground element extends from an end of the first radiating element to the first ground plate, and the second ground element extends from an end of the second radiating element to the second ground plate.
Optionally, the first and second radiating elements are electrically coupled to different radio modules via first and second feeding elements, respectively.
Optionally, the first antenna and the second antenna are substantially inverted-F shaped.
Optionally, the minimum linear distance between the first antenna and the second antenna is 4 cm.
According to a second aspect of the present invention, there is provided an antenna assembly, comprising:
a ground plate;
the dielectric substrate is arranged on the grounding plate and is in surface contact with at least one part of the grounding plate;
a first antenna disposed on the ground plane;
a second antenna disposed on the dielectric substrate;
wherein the first antenna comprises a first radiating element and the second antenna comprises a second radiating element, the first radiating element being substantially parallel to the ground plane and the second radiating element being substantially perpendicular to the ground plane.
Optionally, the first radiating element is electrically coupled to the ground plate via a first ground element, and the second radiating element is electrically coupled to the ground plate via a second ground element.
Optionally, the first ground element extends from an end of the first radiating element to the ground plate, and the second ground element extends from an end of the second radiating element to the ground plate.
Optionally, the first and second radiating elements are electrically coupled to different radio modules via first and second feeding elements, respectively.
Optionally, the first antenna and the second antenna are substantially inverted F-shaped.
Optionally, the minimum linear distance between the first antenna and the second antenna is 4 cm.
According to a third aspect of the present invention, there is provided a wireless device comprising a first wireless module, a second wireless module, and the antenna assembly of any one of the above, wherein the first wireless module uses a first antenna in the antenna assembly, and the second wireless module uses a second antenna in the antenna assembly.
According to a fourth aspect of the present invention, there is provided a wireless device, comprising a first wireless module, a second wireless module, and any one of the above antenna assemblies, wherein the first wireless module uses a first antenna in the antenna assembly, and the second wireless module uses a second antenna in the antenna assembly.
The utility model provides an among the antenna assembling unit, the radiation direction of first antenna and second antenna is perpendicular, and consequently the signal interference between each other is less, and the isolation is higher.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing embodiments of the present invention with reference to the following drawings, in which:
fig. 1 and 2 are a perspective view and a plan view of an antenna assembly according to an embodiment of the present invention;
fig. 3 is a perspective view of an antenna assembly according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a wireless device according to an embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, and procedures have not been described in detail so as not to obscure the present invention. The figures are not necessarily drawn to scale.
Before describing the various embodiments of the present disclosure, the following terminology is introduced.
Polarization of antenna: the polarization characteristic of the antenna is defined by the spatial orientation of the electric field intensity vector of the electromagnetic wave radiated by the antenna in the maximum radiation direction, and is a parameter for describing the spatial orientation of the electromagnetic wave vector radiated by the antenna.
Antenna directivity: the antenna has different radiation or receiving capabilities in different spatial directions, namely the directivity of the antenna, which is a characteristic of the radiation field of the antenna in a far-field region and is the ratio of maximum radiation power to isotropic power.
Antenna isolation refers to the ratio of the signal transmitted by one antenna to the signal power received by another antenna. Antenna isolation is an index used to characterize the isolation of an antenna. Antenna isolation depends on the antenna radiation pattern, the spatial distance of the antenna and the antenna gain.
Fig. 1 and 2 are a perspective view and a plan view of an antenna assembly according to an embodiment of the present invention. As shown, the antenna assembly 10 includes a ground plate 11, a ground plate 14, a dielectric substrate 15, a first antenna 12, and a second antenna 13. Such an antenna assembly 10 may be used in a wireless device. The first antenna 12 and the second antenna 13 may transmit radio frequency signals and be connected to different or the same wireless module via the feeding elements 122 and 132, respectively.
The ground plate 14 is stacked over the ground plate 11 and is in surface contact with at least a portion of the ground plate 11. The ground plate 14 is substantially parallel to the ground plate 11. The ground plane 11 provides a reference ground for the first antenna 12 and the ground plane 14 provides a reference ground for the second antenna 13. The dielectric substrate 15 is fixedly connected with the side surface of the grounding plate 14, and the dielectric substrate 15 and the grounding plate 14 are positioned on the same plane, namely the dielectric substrate 15 is substantially parallel to the grounding plate 11, and the grounding plate 11 plays a bearing role for the grounding plate 14 and the dielectric substrate 15. The second antenna 13 is disposed on a dielectric substrate 15, and the dielectric substrate 15 plays a bearing role for the second antenna 13. It can be seen from the figure that the dielectric substrate 15 and the ground plate 11 do not have a surface contact, but this is not necessary for the application.
As shown in the figure, the first antenna 12 has a radiating element 121, a ground element 123, and a feeding element 122. The radiating element 121 has a first radiating plane (not identified) substantially parallel to the ground plane 11 through which an electrical signal is radiated. The grounding element 123 is used to electrically couple the radiating element 121 and the ground plate 11, and may be disposed at one end of the radiating element 121 and extend to the ground plate 11 as shown in the figure, or disposed at the middle of the radiating element 121 and extend to the ground plate 11.
The first antenna 12 feeds an electrical signal via the feeding element 122. The feeding element 122 may be spaced from the ground element 123, for example, as shown, the feeding element 122 and the ground element 123 are both near the same end of the antenna 12 but are spaced apart. The feeding element 122 may be coupled to an external wireless module via an opening (not identified) of the ground plate 11. The first antenna 12 may be self-supporting, i.e., the first antenna 12 may be physically supported by the ground element 123 and the feed element 122, such that a separate frame is not required to support the first antenna 12. Since there is no separate frame, dielectric loss due to the separate frame can be eliminated, which can improve the efficiency of the antenna.
The second antenna 13 has substantially the same structure as the first antenna 12. As shown in the figure, the second antenna 13 has a radiation element 131, a ground element 133, and a feed element 132. The radiating element 131 has a second radiating plane (not identified) substantially perpendicular to the ground plane 11 through which an electrical signal is radiated. The grounding element 133 electrically couples the radiation element 131 and the ground plate 14, and the grounding element 133 may be disposed at one end of the radiation element 131 as shown in the figure, or may be disposed at the middle position of the radiation element 131. The second antenna 13 may feed electrical signals via the feeding element 132, and the feeding element 132 may be spaced from the ground element 133, for example, as shown in the figure, the feeding element 132 and the ground element 133 are both located at one end of the antenna 13 but spaced apart. The feeding element 132 may be coupled to an external wireless module via openings (not identified) on the ground plates 11 and 14.
As can be seen from the figure, the first radiation plane of the first antenna 12 is substantially parallel to the surface of the ground plate 11, and the second radiation plane of the second antenna 13 is substantially perpendicular to the same surface of the ground plate 11, so that the first radiation plane of the first antenna 12 is substantially perpendicular to the second radiation plane of the second antenna 13, and thus the polarization directions of the first antenna 12 and the second antenna 13 are substantially perpendicular, so that signal interference between the first antenna 12 and the second antenna 13 can be reduced, and the isolation between the first antenna 12 and the second antenna 13 can be improved.
In the antenna assembly shown in fig. 1, the dielectric substrate 15 may be made of a material with a high dielectric constant and low microwave loss, for example, FR-4 material with a thickness of 30mil may be used, and the first antenna 12 and the second antenna 13 are usually made of a conductive material with characteristics of high conductivity, good stability, strong adhesion with the dielectric substrate, for example, copper with a thickness of 1/2oz may be used, and the coupled resistor has a resistance of 100 Ω and a withstand power of 100W.
In the antenna assembly shown in fig. 1, the first antenna 12 and the second antenna 13 are in the shape of an inverted F. They may both be a Planar Inverted F Antenna (PIFA). When designing an inverted-F antenna, there are three main structural parameters that determine the input impedance, resonant frequency, impedance bandwidth, etc. of the antenna. These three structural parameters are the resonant length of the antenna, the height of the antenna and the distance between the two vertical arms, respectively. Therefore, if a planar inverted F antenna is used, the structural parameters of the first antenna 12 and the second antenna 13 may be designed such that the first antenna 12 and the second antenna 13 operate in the same frequency band or different frequency bands, for example, the first antenna 12 and the second antenna 13 may be designed to have the same structural parameters, such that the first antenna 12 and the second antenna 13 both operate in the 2.4G frequency band or the 5G frequency band, or the first antenna 12 and the second antenna 13 may be designed to have different structural parameters, such that the first antenna 12 operates in the 2.4G frequency band and the second antenna 13 operates in the 5G frequency band.
According to the present embodiment, two antennas are packaged in the same antenna assembly, thereby reducing the number of antennas and associated components used in the wireless device, as well as reducing the amount of space required for the antennas. Moreover, because the polarization directions of the first antenna and the second antenna are substantially vertical in the antenna assembly, the signal interference between the first antenna and the second antenna is small, and the isolation degree is high.
Fig. 3 is a schematic structural diagram of an antenna assembly according to another embodiment of the present invention. The antenna assembly 20 differs from the antenna assembly 10 provided in fig. 1 in that in the antenna assembly 20, instead of the ground plate 14 in fig. 1, the dielectric substrate 15 is directly stacked on the ground plate 11, the ground plate 11 plays a role of fixing and carrying the dielectric substrate 15, and the dielectric substrate 15 plays a role of carrying and isolating the second antenna 13, and the ground element 131 electrically couples the radiating element 131 and the ground plate 11. That is, the first antenna 12 and the second antenna 13 share the ground plane 11 as a reference ground.
In the two embodiments, the polarization directions of the first antenna and the second antenna are designed to be substantially perpendicular, so that the signal interference between the first antenna and the second antenna is reduced and the isolation is improved. According to simulation experiments, an antenna assembly can be designed according to the application, and comprises 2 2.4G antennas with the minimum linear distance of only 4cm, but the isolation between the two antennas can reach more than 24 dB.
On the basis, the application also provides a wireless device, as shown in fig. 4. The wireless device 400 includes a first wireless module 401, a second wireless module 402, and an antenna assembly 403. The antenna assembly 403 is, for example, the antenna assembly shown in fig. 1 or the antenna assembly shown in fig. 3. As such, the first wireless module 401 may wirelessly communicate using a first antenna in the antenna assembly 403 and the second wireless module 402 may wirelessly communicate using a second antenna in the antenna assembly 403. The first wireless module 401 and the second wireless module 402 may be wireless transceivers, such as 2.4G or 5G wireless transceivers. Further, the wireless device 400 may also be integrated into a wireless communication chip that can be sold and assembled as a stand-alone product.
The wireless communication device 400 may also be integrated with other components into various products, such as using the wireless communication device 400 in a home scene, for example, integrated into products such as a smart refrigerator, a smart air conditioner, a smart television, smart furniture, a smart sound box, and the like; or using the communications apparatus 400 in a wireless interconnection scenario, such as integrated in various wireless access devices; the communication device 400 may also or alternatively be used in a logistics scenario, such as integrated into a smart delivery vehicle, a smart pick-up robot inside a warehouse, an electronic price tag on a commodity, and so forth.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. For example, in practical applications, the above module functions may be divided into different functional structures different from the embodiments of the present invention according to different needs, or several functional modules in the embodiments of the present invention may be combined and decomposed into different functional structures. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (14)
1. An antenna assembly, comprising:
a first ground plate;
a second ground plate disposed on the first ground plate;
the dielectric substrate is fixedly connected with the second grounding plate;
a first antenna disposed on the first ground plane;
a second antenna disposed on the dielectric substrate;
wherein the first antenna comprises a first radiating element, the second antenna comprises a second radiating element, the first radiating element is parallel to the first ground plane, and the second radiating element is perpendicular to the first ground plane.
2. The antenna assembly of claim 1, wherein the first radiating element is electrically coupled to the first ground plate via a first grounding element, and wherein the second radiating element is electrically coupled to the second ground plate via a second grounding element.
3. The antenna assembly of claim 2, wherein the first ground element extends from an end of the first radiating element to the first ground plate, and wherein the second ground element extends from an end of the second radiating element to the second ground plate.
4. The antenna assembly of claim 1, wherein the first and second radiating elements are electrically coupled to different radio modules via first and second feeding elements, respectively.
5. The antenna assembly of claim 1, wherein the first antenna and the second antenna are inverted-F shaped.
6. The antenna assembly of claim 1, wherein the first antenna and the second antenna have a minimum linear distance of 4 cm.
7. An antenna assembly, comprising:
a ground plate;
the dielectric substrate is arranged on the grounding plate and is in surface contact with at least one part of the grounding plate;
a first antenna disposed on the ground plane;
a second antenna disposed on the dielectric substrate;
wherein the first antenna comprises a first radiating element and the second antenna comprises a second radiating element, the first radiating element is parallel to the ground plane, and the second radiating element is perpendicular to the ground plane.
8. The antenna assembly of claim 7, wherein the first radiating element is electrically coupled to the ground plate via a first grounding element, and wherein the second radiating element is electrically coupled to the ground plate via a second grounding element.
9. The antenna assembly of claim 8, wherein the first ground element extends from an end of the first radiating element to the ground plate, and wherein the second ground element extends from an end of the second radiating element to the ground plate.
10. The antenna assembly of claim 7, wherein the first and second radiating elements are electrically coupled to different radio modules via first and second feeding elements, respectively.
11. The antenna assembly of claim 7, wherein the first antenna and the second antenna are inverted-F shaped.
12. The antenna assembly of claim 7, wherein the first antenna and the second antenna have a minimum linear distance of 4 cm.
13. A wireless device comprising a first wireless module, a second wireless module, and the antenna assembly of any of claims 1-6, the first wireless module using a first antenna in the antenna assembly, the second wireless module using a second antenna in the antenna assembly.
14. A wireless device comprising a first wireless module, a second wireless module, and the antenna assembly of any of claims 7-12, the first wireless module using a first antenna in the antenna assembly, the second wireless module using a second antenna in the antenna assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022895125.9U CN214378853U (en) | 2020-12-03 | 2020-12-03 | Antenna assembly and wireless device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022895125.9U CN214378853U (en) | 2020-12-03 | 2020-12-03 | Antenna assembly and wireless device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214378853U true CN214378853U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022895125.9U Active CN214378853U (en) | 2020-12-03 | 2020-12-03 | Antenna assembly and wireless device |
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| CN (1) | CN214378853U (en) |
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- 2020-12-03 CN CN202022895125.9U patent/CN214378853U/en active Active
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