CN112909543A - Antenna and wireless device - Google Patents
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- CN112909543A CN112909543A CN202110171776.XA CN202110171776A CN112909543A CN 112909543 A CN112909543 A CN 112909543A CN 202110171776 A CN202110171776 A CN 202110171776A CN 112909543 A CN112909543 A CN 112909543A
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- 230000005855 radiation Effects 0.000 claims abstract description 57
- 230000003071 parasitic effect Effects 0.000 claims description 31
- 238000002955 isolation Methods 0.000 abstract description 15
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- Variable-Direction Aerials And Aerial Arrays (AREA)
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Abstract
The invention discloses an antenna which comprises a first sub-antenna and a second sub-antenna, wherein a radiation part of the first sub-antenna is vertical to a radiation part of the second sub-antenna so as to reduce radiation components of the first sub-antenna and the second sub-antenna in the same direction. In addition, the first reference ground of the first sub-antenna is connected with the first reference ground of the second sub-antenna, so that the trend of the current on the first reference ground can be changed, the radiation components of the first sub-antenna and the second sub-antenna in the same direction are further reduced, and the isolation and the anti-interference performance between the first sub-antenna and the second sub-antenna are further improved. The invention also discloses wireless equipment which has the same beneficial effect as the antenna and meets the portable requirement.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to an antenna and a wireless device.
Background
With the development of wireless technology, in order to achieve better wireless communication performance of wireless devices, antennas in many existing wireless devices usually include two sub-antennas to meet different application requirements. However, interference is easily generated between the two sub-antennas, in order to improve the isolation between the two sub-antennas, the distance between the two sub-antennas is usually increased in the prior art, the center distance between some sub-antennas even reaches 60mm, the size of the antenna and the wireless device where the antenna is located is increased, and the miniaturization requirement of a user on the antenna and the portable requirement of the wireless device are not met.
Disclosure of Invention
The invention aims to provide an antenna and wireless equipment, which can realize better isolation and anti-interference performance between a first sub-antenna and a second sub-antenna, realize miniaturization of the antenna and meet the portable requirement.
In order to solve the above technical problem, the present invention provides an antenna, including a dielectric plate, and a first sub-antenna and a second sub-antenna disposed on the dielectric plate, where a radiation portion of the first sub-antenna is perpendicular to a radiation portion of the second sub-antenna, and a first reference ground of the first sub-antenna is connected to a first reference ground of the second sub-antenna.
Preferably, the first sub-antenna and the second sub-antenna each include the first reference ground, a radiation section, a parasitic section, a conductive section, and a ground section;
the radiating portion is connected to the first reference ground through the ground portion, and the parasitic portion is connected to a feeding point through the conductive portion, the parasitic portion being configured to couple an electrical signal received through the feeding point to the radiating portion.
Preferably, the radiating portion and the parasitic portion are located in a first plane, and the first plane is parallel to a second plane in which the reference ground is located.
Preferably, the first reference ground of the first sub-antenna is perpendicular to the first reference ground of the second sub-antenna.
Preferably, the parasitic portion of the first sub-antenna is perpendicular to the parasitic portion of the second sub-antenna.
Preferably, each of the first and second sub-antennas further includes a second reference ground connected to the corresponding first reference ground.
Preferably, the second reference ground of the first sub-antenna is perpendicular to the second reference ground of the second sub-antenna.
Preferably, each of the first and second sub-antennas further comprises a second reference ground connected to the corresponding first reference ground; the radiating part, the parasitic part and the first reference ground of the first sub-antenna and the second sub-antenna are all rectangular, the second reference ground of the first sub-antenna is rectangular, and the second reference ground of the second sub-antenna is T-shaped.
Preferably, the dielectric board is an FR-4 board.
Preferably, the area of the first reference ground of the first sub-antenna and the second sub-antenna is larger than the area of the corresponding radiation part.
In order to solve the technical problem, the invention further provides a wireless device comprising the antenna.
The invention provides an antenna which comprises a first sub-antenna and a second sub-antenna, wherein a radiation part of the first sub-antenna is vertical to a radiation part of the second sub-antenna so as to reduce radiation components of the first sub-antenna and the second sub-antenna in the same direction. In addition, the first reference ground of the first sub-antenna is connected with the first reference ground of the second sub-antenna, so that the trend of the current on the first reference ground can be changed, the radiation components of the first sub-antenna and the second sub-antenna in the same direction are further reduced, and the isolation and the anti-interference performance between the first sub-antenna and the second sub-antenna are further improved.
The invention also provides wireless equipment which has the same beneficial effects as the antenna and meets the portable requirement.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic top view of an antenna according to the present invention;
fig. 2 is a front view of the antenna of fig. 1 provided in accordance with the present invention;
fig. 3 is a left side view of the antenna of fig. 1 provided in accordance with the present invention;
fig. 4 is a schematic diagram of S parameters of the antenna shown in fig. 1 according to the present invention.
Detailed Description
The core of the invention is to provide the antenna and the wireless equipment, which can realize better isolation and anti-interference performance between the first sub-antenna and the second sub-antenna, realize the miniaturization of the antenna and meet the portable requirement.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
Referring to fig. 1, fig. 1 is a schematic top view of an antenna provided in the present invention.
The antenna comprises a dielectric plate 3, a first sub-antenna 1 and a second sub-antenna 2 which are arranged on the dielectric plate 3, wherein a radiation part 12 of the first sub-antenna 1 is vertical to a radiation part 12 of the second sub-antenna 2, and a first reference ground 11 of the first sub-antenna 1 is connected with a first reference ground 11 of the second sub-antenna 2.
Specifically, the antenna comprises a dielectric plate 3, a first sub-antenna 1 and a second sub-antenna 2, wherein the first sub-antenna 1 and the second sub-antenna 2 are arranged on the dielectric plate 3, and the applicant considers that when the working frequency bands of the first sub-antenna 1 and the second sub-antenna 2 are the same and the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction are more, the interference between the first sub-antenna 1 and the second sub-antenna 2 is larger, and the isolation is poorer. In order to solve the problem, in the present application, the radiation portion 12 of the first sub-antenna 1 is perpendicular to the radiation portion 12 of the second sub-antenna 2, and the radiation direction of the first sub-antenna 1 is made to be different from the radiation direction of the second sub-antenna 2 as much as possible by this way, so that the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction are reduced, and the isolation and the anti-interference performance between the first sub-antenna 1 and the second sub-antenna 2 are improved.
Further, the first sub-antenna 1 and the second sub-antenna 2 each include a first reference ground 11, the first reference ground 11 of the first sub-antenna 1 and the first reference ground 11 of the second sub-antenna 2 are connected, in this way, the intercommunication of radiation current is realized between the first reference ground 11 of the first sub-antenna 1 and the first reference ground 11 of the second sub-antenna 2, and by changing the trend of the radiation current on the first reference ground 11, the direction of the radiation current on the first reference ground 11 becomes regular and directional, so that the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction are further reduced, and the isolation and the anti-interference performance between the first sub-antenna 1 and the second sub-antenna 2 are further improved.
In conclusion, the antenna provided by the application reduces the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction, improves the isolation and the anti-interference performance between the first sub-antenna 1 and the second sub-antenna 2, has small size, and realizes the miniaturization of the antenna.
On the basis of the above-described embodiment:
as a preferred embodiment, the first sub-antenna 1 and the second sub-antenna 2 each include a first reference ground 11, a radiation section 12, a parasitic section 13, a conductive section 14, and a ground section 15;
the radiating portion 12 is connected to the first reference ground 11 through a ground portion 15, the parasitic portion 13 is connected to the feeding point through a conductive portion 14, and the parasitic portion 13 is used for coupling an electrical signal received through the feeding point to the radiating portion 12.
Specifically, referring to fig. 2 and fig. 3, fig. 2 is a front view of the antenna shown in fig. 1 according to the present invention, and fig. 3 is a left side view of the antenna shown in fig. 1 according to the present invention.
The radiation portion 12 of the first sub-antenna 1 is connected to the first reference ground 11 thereof through the ground portion 15 thereof, the parasitic portion 13 of the first sub-antenna 1 is connected to the feeding point thereof through the conductive portion 14 thereof, the radiation portion 12 of the second sub-antenna 2 is connected to the first reference ground 11 thereof through the ground portion 15 thereof, and the parasitic portion 13 of the second sub-antenna 2 is connected to the feeding point thereof through the conductive portion 14 thereof.
The parasitic part 13 and the radiating part 12 constitute a radiating body of the antenna, and the parasitic part 13 receives an electrical signal through a feeding point connected to itself and couples the electrical signal to the radiating part 12, so that the radiating part 12 stores energy through a capacitive structure formed between the radiating part 12 and the first reference ground 11 after receiving the electrical signal and radiates the signal energy to a free space at an edge of the radiating part 12.
In fig. 1, the feeding point is a non-metal circular area, and transmits the electrical signal in the circuit to the antenna access port, and the access mode is generally a microstrip circuit. The conductive portion 14 is a cylindrical conductive PIN, and transmits the electrical signal received from the feeding point to the parasitic portion 13. The grounding part 15 conducts the radiation part 12 and the first reference ground 11, and the impedance characteristic of the antenna can be adjusted by changing the position of the grounding point, so that the radiation performance of the antenna is optimized. In addition, in practical applications, the impedance of the antenna can also be changed by adjusting the size of the parasitic part 13, and the resonance of the antenna can be changed by adjusting the size of the radiating part 12.
As a preferred embodiment, the radiating portion 12 and the parasitic portion 13 lie in a first plane, which is parallel to a second plane in which the reference ground lies.
In this application, radiation part 12 and parasitic part 13 are in a plane, and this plane is parallel with the ground of reference, and this kind of mode makes the structure of antenna more regular, the technology preparation of the antenna of being convenient for, the spatial layout of the wireless device at antenna place of being convenient for.
As a preferred embodiment, the first reference ground 11 of the first sub-antenna 1 is perpendicular to the first reference ground 11 of the second sub-antenna 2.
Specifically, in order to further reduce the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction, in the present application, the first reference ground 11 of the first sub-antenna 1 is perpendicular to the first reference ground 11 of the second sub-antenna 2, in this way, the radiation current direction on the first reference ground 11 becomes regular and directional, and the radiation directions of the first sub-antenna 1 and the second sub-antenna 2 are further adjusted, so that the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction are further reduced, and the isolation and the anti-interference performance between the first sub-antenna 1 and the second sub-antenna 2 are improved.
As a preferred embodiment, the parasitic portion 13 of the first sub-antenna 1 is perpendicular to the parasitic portion 13 of the second sub-antenna 2.
Specifically, in order to further reduce the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction, in this application, the parasitic portion 13 of the first sub-antenna 1 is perpendicular to the parasitic portion 13 of the second sub-antenna 2, so that the radiation current direction on the first reference ground 11 becomes regular and directional, and the radiation directions of the first sub-antenna 1 and the second sub-antenna 2 are further adjusted, so that the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction are further reduced, and the isolation and the anti-interference performance between the first sub-antenna 1 and the second sub-antenna 2 are improved.
As a preferred embodiment, the first sub-antenna 1 and the second sub-antenna 2 each further comprise a second reference ground 16 connected to the corresponding first reference ground 11.
Specifically, in order to further reduce the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction, in the present application, the first sub-antenna 1 includes the second reference ground 16 connected to the own first reference ground 11, and the second sub-antenna 2 includes the second reference ground 16 connected to the own first reference ground 11. The second reference ground 16 is arranged to make the radiation current on the first reference ground 11 more uniform, and further make the radiation current direction on the first reference ground 11 become regular and directional, so as to further reduce the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction, and further improve the isolation and anti-interference performance between the first sub-antenna 1 and the second sub-antenna 2.
As a preferred embodiment, the second reference ground 16 of the first sub-antenna 1 is perpendicular to the second reference ground 16 of the second sub-antenna 2.
In order to further reduce the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction, in the present application, the second reference ground 16 of the first sub-antenna 1 is perpendicular to the second reference ground 16 of the second sub-antenna 2, so that the radiation current direction on the first reference ground 11 becomes regular and directional, thereby further reducing the radiation components of the first sub-antenna 1 and the second sub-antenna 2 in the same direction, and further improving the isolation and the anti-interference performance between the first sub-antenna 1 and the second sub-antenna 2.
As a preferred embodiment, the first sub-antenna and the second sub-antenna each further comprise a second reference ground connected to the corresponding first reference ground; the radiation portion 12, the parasitic portion 13 and the first reference ground 11 of the first sub-antenna 1 and the second sub-antenna 2 are all rectangular, the second reference ground 16 of the first sub-antenna 1 is rectangular, and the second reference ground 16 of the second sub-antenna 2 is T-shaped.
Referring to fig. 1, the radiation portion 12, the parasitic portion 13 and the first reference ground 11 of each sub-antenna are all rectangular, the second reference ground 16 of the first sub-antenna 1 is also rectangular, the first side of the first reference ground 11 of the first sub-antenna 1 is connected to the first side of the first reference ground 11 of the second sub-antenna 2 and is also vertically connected to the second side of the first reference ground 11 of the second sub-antenna 2, and the first side of the first reference ground 11 of the second sub-antenna 2 is perpendicular to the second side. One short side of the second reference ground 16 of the first sub-antenna 1 is connected to the first side of the first reference ground 11 of the first sub-antenna 1, and the second reference ground 16 of the first sub-antenna 1 is parallel to the second side of the second sub-antenna 2.
The second reference ground 16 of the second sub-antenna 2 is T-shaped, the second sub-antenna 2 specifically includes a first rectangular portion and a second rectangular portion, a first short side of the first rectangular portion is connected to the second rectangular portion, a second short side of the first rectangular portion is connected to a second side of the first reference ground 11 of the second sub-antenna 2, the first rectangular portion is perpendicular to the second side of the first reference ground 11 of the second sub-antenna 2, and the first rectangular portion is perpendicular to the second rectangular portion.
The second reference ground 16 of the first sub-antenna 1 is perpendicular to the second reference ground 16 of the second sub-antenna 2, so that the isolation and the anti-interference performance between the first sub-antenna 1 and the second sub-antenna 2 are further improved.
As a preferred embodiment, the dielectric board 3 is an FR-4 board.
In the application, the medium plate 3 is an FR-4 plate, and the FR-4 plate has the advantages of flame retardance, good heat resistance and moisture resistance and small influence on the performance of the medium plate by the environment.
Of course, other types of dielectric plates 3 may be used according to actual needs, and the present application is not limited in particular.
As a preferred embodiment, the area of the first reference ground 11 of the first sub-antenna 1 and the second sub-antenna 2 is larger than the area of the corresponding radiation portion 12.
Specifically, in order to make the radiation direction of the antenna upward (based on the direction toward the dielectric plate 3 as a lower direction), the radiation component toward the dielectric plate 3 is reduced as much as possible, in the present application, the area of the first reference ground 11 of the first sub-antenna 1 and the second sub-antenna 2 is larger than the area of the corresponding radiation portion 12. By the mode, the radiation direction of the antenna can be upwards as much as possible, and the radiation performance of the antenna is improved.
In practical application, the first sub-antenna 1 and the second sub-antenna 2 may both have a size of 12 × 10 × 7mm, and both operate in a 2.4GHz band, and the center-to-center distance between the two sub-antennas is about 14mm, so that compared with the center-to-center distance of 60mm antennas in the prior art, the sizes of the first sub-antenna 1 and the second sub-antenna 2 are greatly reduced, and the antenna can be adapted to a miniaturized wireless device.
Referring to fig. 4, fig. 4 is a schematic diagram of S parameters of the antenna shown in fig. 1 according to the present invention.
S11 is the reflection coefficient of the first sub-antenna, S22 is the reflection coefficient of the second sub-antenna, and S21 is the isolation between the two antennas.
It can be seen that, in the vicinity of 2.4GHz, S11 and S22 of the antenna are both below-10 dB, and S21 is below-20 dB.
The invention also provides a wireless device comprising the antenna.
Specifically, the wireless device may be a mobile phone, a watch, or the like, and the application is not particularly limited thereto. In addition, please refer to the above embodiments for the introduction of the antenna in the wireless device provided by the present invention, which is not repeated herein.
It is to be noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An antenna is characterized by comprising a dielectric plate, a first sub-antenna and a second sub-antenna, wherein the first sub-antenna and the second sub-antenna are arranged on the dielectric plate, a radiation part of the first sub-antenna is perpendicular to a radiation part of the second sub-antenna, and a first reference ground of the first sub-antenna is connected with a first reference ground of the second sub-antenna.
2. The antenna of claim 1, wherein the first sub-antenna and the second sub-antenna each include the first reference ground, a radiating portion, a parasitic portion, a conductive portion, and a ground portion;
the radiating portion is connected to the first reference ground through the ground portion, and the parasitic portion is connected to a feeding point through the conductive portion, the parasitic portion being configured to couple an electrical signal received through the feeding point to the radiating portion.
3. The antenna of claim 2, wherein the radiating portion and the parasitic portion lie in a first plane that is parallel to a second plane in which the reference ground lies.
4. The antenna of claim 2, wherein the first reference ground of the first sub-antenna is perpendicular to the first reference ground of the second sub-antenna.
5. The antenna of claim 2, wherein the parasitic portion of the first sub-antenna is perpendicular to the parasitic portion of the second sub-antenna.
6. The antenna of claim 1, wherein the first sub-antenna and the second sub-antenna each further comprise a second reference ground connected to the corresponding first reference ground.
7. The antenna of claim 6, wherein the second reference ground of the first sub-antenna is perpendicular to the second reference ground of the second sub-antenna.
8. The antenna of claim 2, wherein the first sub-antenna and the second sub-antenna each further comprise a second reference ground connected to the corresponding first reference ground; the radiating part, the parasitic part and the first reference ground of the first sub-antenna and the second sub-antenna are all rectangular, the second reference ground of the first sub-antenna is rectangular, and the second reference ground of the second sub-antenna is T-shaped.
9. The antenna according to any one of claims 1 to 8, wherein the first reference ground of the first sub-antenna and the second sub-antenna has an area larger than an area of a corresponding radiation portion.
10. A wireless device, characterized in that it comprises an antenna according to any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171776.XA CN112909543A (en) | 2021-02-08 | 2021-02-08 | Antenna and wireless device |
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| CN202110171776.XA CN112909543A (en) | 2021-02-08 | 2021-02-08 | Antenna and wireless device |
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| CN112909543A true CN112909543A (en) | 2021-06-04 |
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| CN111478035A (en) * | 2020-05-15 | 2020-07-31 | 上海电力大学 | Flexible double-stop-band UWB-MIMO antenna based on coplanar waveguide feed |
| CN112164882A (en) * | 2020-09-24 | 2021-01-01 | 昆山亿趣信息技术研究院有限公司 | MIMO antenna and mobile communication equipment |
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Application publication date: 20210604 |