CN115882200A - Antenna and electronic device - Google Patents
Antenna and electronic device Download PDFInfo
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- CN115882200A CN115882200A CN202111131870.9A CN202111131870A CN115882200A CN 115882200 A CN115882200 A CN 115882200A CN 202111131870 A CN202111131870 A CN 202111131870A CN 115882200 A CN115882200 A CN 115882200A
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 description 18
- 238000002955 isolation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The embodiment of the invention provides an antenna and electronic equipment. The antenna comprises an antenna component and a feed component connected with the antenna component; the antenna assembly comprises a first antenna unit and a second antenna unit; the first antenna unit comprises a first radiator, a first grounding branch section and a first feeding branch section, wherein the first grounding branch section and the first feeding branch section are respectively connected with the first radiator; the second antenna unit comprises a second radiator, a second grounding branch and a second feeding branch which are respectively connected with the second radiator; the feeding component comprises a feeding arm, a first feeding point and a second feeding point; the feeding arm is arranged at intervals with the first radiator and the second radiator and is respectively connected with the first feeding branch knot and the second feeding branch knot; a spacer is formed between the first radiator and the second radiator, the first feed point corresponds to the spacer and is arranged on the feed arm, and the second feed point is arranged at one end of the feed arm connected with the first feed branch or the second feed branch. The antenna provided by the invention has good MIMO performance.
Description
Technical Field
The present invention relates to the field of communications antennas, and in particular, to an antenna and an electronic device.
Background
With the development of the 5G technology, the data transmission capability of the terminal device can be effectively improved by adopting a Multiple-Input Multiple-Output (MIMO) antenna technology, however, the existing 5G terminal device has a smaller volume, the layout of the antennas becomes more difficult, and the MIMO performance of the antennas deteriorates due to the layout of Multiple antennas in a narrow space.
Disclosure of Invention
The embodiments of the present invention mainly aim to provide an antenna and an electronic device, which aim to effectively improve the MIMO performance of the antenna.
In a first aspect, an embodiment of the present invention provides an antenna, including:
the antenna assembly and a feed assembly connected with the antenna assembly;
the antenna assembly comprises a first antenna unit and a second antenna unit arranged at a distance from the first antenna unit;
the first antenna unit comprises a first radiator, a first grounding branch and a first feeding branch, wherein the first grounding branch and the first feeding branch are respectively connected with the first radiator;
the second antenna unit comprises a second radiator, a second grounding branch and a second feeding branch which are respectively connected with the second radiator;
the feeding component comprises a feeding arm, a first feeding point and a second feeding point, wherein the first feeding point and the second feeding point are arranged on the feeding arm;
the feeding arm is arranged at intervals with the first radiator and the second radiator and is respectively connected with the first feeding branch and the second feeding branch;
a spacer is formed between the first radiator and the second radiator, the first feed point corresponds to the spacer and is arranged on the feed arm, and the second feed point is arranged at one end of the feed arm connected with the first feed branch or the second feed branch;
when an external signal is input to the antenna through the first feeding point or the second feeding point, the external signal is radiated outwards through the first antenna unit and the second antenna unit.
In some possible embodiments, the spacer corresponds to a central region of the extended length of the feed arm.
In some possible embodiments, the feed arm extends over an odd multiple of the resonant wavelength of the antenna.
In some possible embodiments, the path length between the first feeding point and the second feeding point is two fifths to three fifths of the extension length of the feeding arm.
In some possible embodiments, a path length between the first feeding point and the second feeding point is 1/2 of a resonant wavelength of the antenna.
In some possible embodiments, when an external signal is input from the first feeding point, a current direction in the first radiator and a current direction in the second radiator are opposite;
when an external signal is input from the second feeding point, a current direction in the first radiator and a current direction in the second radiator are the same.
In some possible embodiments, when an external signal is input from the first feeding point, the current intensity of the second feeding point is less than 0.5A, and when an external signal is input from the second feeding point, the current intensity of the first feeding point is less than 0.5A.
In some possible embodiments, when an external signal is input from the first feeding point, the current intensity of the second feeding point is 0A, and when an external signal is input from the second feeding point, the current intensity of the first feeding point is 0A.
In some possible embodiments, the first ground branch is connected to an end of the first radiator away from the second radiator;
the second grounding branch is connected to one end, far away from the first radiator, of the second radiator.
In some possible embodiments, the first feed stub and the first ground stub are spaced apart; the second feeding branch and the second grounding branch are arranged at intervals.
Compared with the prior art, the antenna provided by the first aspect of the embodiments of the present invention includes an antenna assembly and a feed assembly connected to the antenna assembly, where the antenna assembly includes a first antenna unit and a second antenna unit, and a first radiator of the first antenna unit and a second radiator of the second antenna unit can be used as independent radiators to perform independent radiation or as a common radiator to perform radiation, so that the antenna has good radiation performance.
In a second aspect, an embodiment of the present invention further provides an electronic device, including the antenna described above.
In some possible embodiments, the electronic device further includes an antenna mount to which the antenna is mounted.
In some possible embodiments, the electronic device further includes a power supply battery, and the antenna is mounted on an outer surface of the power supply battery housing.
Compared with the prior art, the electronic device provided by the second aspect of the embodiments of the present invention has good MIMO performance because the electronic device includes the antenna of the first aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an antenna according to an embodiment of the present invention;
fig. 2 is a schematic current flow diagram when an external signal is input from a first feeding point by the antenna according to the embodiment of the present invention;
fig. 3 is a schematic current flow diagram when an external signal is input from a second feeding point by the antenna provided in the embodiment of the present invention;
fig. 4 is a simplified structural schematic diagram of an electronic device according to an embodiment of the present invention.
The reference numbers indicate:
10. an antenna;
11. an antenna assembly; 110. a spacer region;
111. a first antenna element; 1111. a first radiator; 1112. a first ground branch section; 1113. a first feed stub;
112. a second antenna element; 1121. a second radiator; 1122. a second ground branch; 1123. a second feed branch;
12. a feeding component; 121. a feed arm; 122. a first feeding point; 123. a second feeding point;
s1, a first transmission path;
s2, a second transmission path;
s3, a third transmission path;
s4, a fourth transmission path;
20. an electronic device; 201. an apparatus main body; 202. and a power supply battery.
Detailed Description
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.
The flow diagrams depicted in the figures are merely illustrative and do not necessarily include all of the elements and operations/steps, nor do they necessarily have to be performed in the order depicted. For example, some operations/steps may be decomposed, combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification 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.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with each other without conflict.
Referring to fig. 1, an antenna 10 according to an embodiment of the present invention includes an antenna assembly 11 and a feeding assembly 12, where the feeding assembly 12 is connected to the antenna assembly 11 to feed a signal into the antenna assembly 11.
Specifically, the antenna assembly 11 includes a first antenna element 111 and a second antenna element 112, wherein the first antenna element 111 and the second antenna element 112 are spaced apart. The first antenna unit 111 includes a first radiator 1111, a first ground branch 1112, and a first feed branch 1113; the first ground branch 1112 and the first feed branch 1113 are respectively connected to the first radiator 1111. The second antenna unit 112 includes a second radiator 1121, a second ground branch 1122, and a second feed branch 1123; the second radiator 1121 and the second feed branch 1123 are respectively connected to the second radiator 1121. The feeding component 12 includes a feeding arm 121, a first feeding point 122 and a second feeding point 123; wherein, the first feeding point 122 and the second feeding point 123 are respectively disposed on the feeding arm 121, and a space is provided between the first feeding point 122 and the second feeding point 123. The feeding arm 121 is disposed at an interval with the first radiator 1111 and the second radiator 1121, and is connected to the first feeding branch 1113 and the second feeding branch, respectively. A spacing region 110 is formed between the first radiator 1111 and the second radiator 1121, the first feeding point 122 is disposed on the feeding arm 121 corresponding to the spacing region 110, and the second feeding point 123 is disposed at one end of the feeding arm 121 connected to the first feeding branch 1113 or the second feeding branch 1123. When an external signal is input to the antenna 10 through the first feeding point 122 or the second feeding point 123, the external signal is radiated to the outside through the first antenna element 111 and the second antenna element 112. In the antenna 10 according to the embodiment of the present invention, the first antenna unit 111 and the second antenna unit 112 have similar structures and operate in the same resonant frequency band, and through the structural design of the feeding assembly 12 and the first antenna unit 111 and the second antenna unit 112, the first antenna unit 111 and the second antenna unit 112 have good isolation, and no matter the feeding is performed from the first feeding point 122 or the second feeding point 123, the first antenna unit 111 and the second antenna unit 112 both participate in the operation, the directional pattern of the first antenna unit 111 is complementary to the directional pattern of the second antenna unit 112, and the first radiator 1111 and the second radiator 1121 both radiate signals outwards, so that the antenna 10 can be ensured to have good MIMO performance; in addition, since the first radiator 1111 and the second radiator 1121 are shared, the space occupied by the antenna 10 can be saved, thereby providing more space for the layout of other components.
Referring to fig. 1, in some embodiments, the spacer 110 corresponds to a central region of the extended length of the feeding arm 121. The positional relationship between the spacer 110 and the feeding arm 121 may realize the sharing of the first radiator 1111 in the first antenna unit 111 and the second radiator 1121 in the second antenna unit 112, so as to effectively improve the radiation performance of the antenna 10 on the premise of ensuring the isolation between the first antenna unit 111 and the second antenna unit 112.
Referring to fig. 1, 2 and 3, in some embodiments, the feed arm 121 extends an odd number of times the resonant wavelength of the antenna 10, that is: l = (2 n-1) λ, where L is an extended length of the feed arm 121; n is a positive integer, such as 1 or 2 or 3 or 4, etc.; λ is the resonant wavelength of the antenna 10. With such a structure, when an external signal is input from the first feeding point 122, the external signal has a first transmission path S1 and a second transmission path S2 in the antenna 10, wherein the length of the first transmission path S1 is a distance that the external signal travels from the first feeding point 122 to an end of the first radiator 1111 near the second radiator 1121, and the length of the second transmission path S2 is a distance that the external signal travels from the first feeding point 122 to an end of the second radiator 1121 near the first radiator 1111, so that the length of the first transmission path S1 is the same as the length of the second transmission path S2, and at this time, a current direction in the first radiator 1111 and a current direction in the second radiator 1121 are opposite. When an external signal is input from the second feeding point 123, the external signal has a third transmission path S3 and a fourth transmission path S4 in the antenna 10, where the length of the third transmission path S3 is a distance traveled by the external signal from the second feeding point 123 to the end of the first radiator 1111 near the second radiator 1121 through the feeding arm 121, and the length of the fourth transmission path S4 is a distance traveled by the external signal from the second feeding point 123 to the end of the second radiator 1121 near the first radiator 1111; or, the length of the third transmission path S3 is a distance traveled by an external signal from the second feeding point 123 to the end of the second radiator 1121 near the first radiator 1111 through the feeding arm 121, and the length of the fourth transmission path S4 is a distance traveled by an external signal from the second feeding point 123 to the end of the first radiator 1111 near the second radiator 1121, because the third transmission path S3 is extended by the entire feeding arm 121 and the extended length of the feeding arm 121 is designed to be an odd multiple of the resonant wavelength of the antenna 10, the current direction of the first radiator 1111 is the same as the current direction of the second radiator 1121, and the obtained patterns of the first antenna unit 111 and the second antenna unit 112 are complementary to each other, thereby ensuring the MIMO performance of the antenna 10. In some embodiments, the resonant frequency band of the antenna 10 includes any of B41, N78, N79, e.g., the B41 frequency band includes 2500M-2690M; the N78 frequency band comprises 3400MHz-3700MHz; the N79 frequency band comprises 4900MHz-5000MHz.
Referring to fig. 1, in some embodiments, the path length between the first feeding point 122 and the second feeding point 123 is two fifths to three fifths of the extension length of the feeding arm 121, that is: d =2/5L to 3/5L, where D is a path length between the first feeding point 122 and the second feeding point 123, and L is an extended length of the feeding arm 121. When the path lengths of both the first feeding point 122 and the second feeding point 123 are set to be two fifths to three fifths of the extension length of the feeding arm 121, the current intensity of the second feeding point 123 is less than 0.5A when an external signal is input from the first feeding point 122, and the current intensity of the first feeding point 122 is less than 0.5A when an external signal is input from the second feeding point 123, the antenna 10 exhibits a smaller amount of coupling, thereby allowing a better isolation between the first antenna element 111 and the second antenna element 112. In some embodiments, the path length between the first feeding point 122 and the second feeding point 123 is 1/2 of the resonant wavelength of the antenna 10, and such a structure is designed that when an external signal is input from the first feeding point 122, the current intensity of the second feeding point 123 is 0A, and when an external signal is input from the second feeding point 123, the current intensity of the first feeding point 122 is 0A, and the coupling amount of the antenna 10 can be minimized and the isolation between the first antenna element 111 and the second antenna element 112 can be in an excellent state regardless of whether the external signal is input from the first feeding point 122 or the second feeding point 123. In some embodiments, the isolation is above-28 dB, and the isolation can be improved by above 18dB compared with the existing antenna.
Referring to fig. 2 and 3, in some embodiments, when an external signal is input from the first feeding point 122, a current direction in the first radiator 1111 is opposite to a current direction in the second radiator 1121; and when an external signal is inputted from the second feeding point 123, a current direction in the first radiator 1111 and a current direction in the second radiator 1121 are the same. Such a current direction distribution ensures that the pattern of the first antenna element 111 and the pattern of the second antenna element 112 are complementary, so that the antenna 10 has good MIMO performance.
Referring to fig. 1, in some embodiments, the first ground branch 1112 is connected to an end of the first radiator 1111 away from the second radiator 1121; the second ground branch 1122 is connected to an end of the second radiator 1121 remote from the first radiator 1111. Due to the structural design, the first antenna unit 111 and the second antenna unit 112 are conveniently grounded respectively, and the first radiator 1111 and the second radiator 1121 are shared. In some embodiments, the first feed branch 1113 and the first ground branch 1112 are spaced apart; meanwhile, the second feed branch 1123 and the second ground branch 1122 are disposed at an interval.
Referring to fig. 4, an electronic device 20 is further provided in an embodiment of the present invention, where the electronic device 20 includes an antenna 10, and a specific structure of the antenna 10 is the same as that of the antenna 10 provided in the foregoing, which is not described herein again.
Referring to fig. 4, in some embodiments, the electronic device 20 further includes a device body 201 and an antenna bracket (not shown), the antenna bracket is connected to the device body 201, and the antenna 10 is mounted on the antenna bracket, so that the antenna 10 is mounted on the device body 201. In some embodiments, the electronic device 20 further includes a power supply battery 202, and the antenna 10 is mounted on an outer surface of the housing of the power supply battery 202.
Referring to fig. 4, in some embodiments, the device main body 201 includes a printed circuit board (not shown), and the first ground branch 1112 and the second ground branch 1122 are respectively connected to a ground point of the printed circuit board, so as to ground the antenna 10.
In some embodiments, the electronic device 20 may be a smartphone, a tablet, a laptop, a personal digital assistant, a wearable device, a POS, a vehicle-mounted computer, and the like. Since the electronic device 20 uses the antenna 10 described above, it has good MIMO performance.
It should be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items and includes such combinations. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. An antenna, comprising:
the antenna assembly and a feed assembly connected with the antenna assembly;
the antenna assembly comprises a first antenna unit and a second antenna unit arranged at a distance from the first antenna unit;
the first antenna unit comprises a first radiator, a first grounding branch and a first feeding branch, wherein the first grounding branch and the first feeding branch are respectively connected with the first radiator;
the second antenna unit comprises a second radiator, a second grounding branch and a second feeding branch which are respectively connected with the second radiator;
the feeding component comprises a feeding arm, a first feeding point and a second feeding point;
the feeding arm is arranged at intervals with the first radiator and the second radiator and is respectively connected with the first feeding branch and the second feeding branch;
a spacer is formed between the first radiator and the second radiator, the first feed point corresponds to the spacer and is arranged on the feed arm, and the second feed point is arranged at one end of the feed arm connected with the first feed branch or the second feed branch;
when an external signal is input to the antenna through the first feeding point or the second feeding point, the external signal is radiated outward through the first antenna element and the second antenna element.
2. An antenna according to claim 1, wherein the spacer corresponds to a central region of the extended length of the feed arm.
3. An antenna according to claim 1, wherein the feed arm extends over an odd multiple of the resonant wavelength of the antenna.
4. An antenna according to claim 3, wherein the path length between the first feed point and the second feed point is between two fifths and three fifths of the extension of the feed arm.
5. An antenna according to claim 3, wherein the path length between the first feed point and the second feed point is 1/2 of the resonant wavelength of the antenna.
6. The antenna according to any one of claims 1 to 5, wherein a direction of current flow in the first radiator and a direction of current flow in the second radiator are opposite when an external signal is input from the first feed point;
when an external signal is input from the second feeding point, a current direction in the first radiator and a current direction in the second radiator are the same.
7. The antenna according to any one of claims 1 to 5, wherein the current intensity of the second feeding point is less than 0.5A when an external signal is input from the first feeding point, and the current intensity of the first feeding point is less than 0.5A when an external signal is input from the second feeding point.
8. The antenna according to claim 7, wherein the current strength of the second feeding point is 0A when an external signal is input from the first feeding point, and the current strength of the first feeding point is 0A when an external signal is input from the second feeding point.
9. The antenna of any one of claims 1-5, wherein the first ground stub is connected to an end of the first radiator distal from the second radiator;
the second grounding branch is connected to one end, far away from the first radiator, of the second radiator.
10. The antenna of any of claims 1-5, wherein the first feed stub and the first ground stub are spaced apart; the second feed branch and the second grounding branch are arranged at intervals.
11. An electronic device, characterized in that it comprises an antenna according to any of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111131870.9A CN115882200A (en) | 2021-09-26 | 2021-09-26 | Antenna and electronic device |
| PCT/CN2022/100723 WO2023045452A1 (en) | 2021-09-26 | 2022-06-23 | Antenna and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111131870.9A CN115882200A (en) | 2021-09-26 | 2021-09-26 | Antenna and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115882200A true CN115882200A (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111131870.9A Pending CN115882200A (en) | 2021-09-26 | 2021-09-26 | Antenna and electronic device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115882200A (en) |
| WO (1) | WO2023045452A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI487195B (en) * | 2012-07-03 | 2015-06-01 | Wistron Neweb Corp | Electronic device and multiband antenna thereof |
| CN104733861A (en) * | 2013-12-20 | 2015-06-24 | 深圳富泰宏精密工业有限公司 | Antenna structure and wireless communication device with same |
| WO2015182677A1 (en) * | 2014-05-30 | 2015-12-03 | 旭硝子株式会社 | Multiple antenna and wireless device provided with same |
| GB201718009D0 (en) * | 2017-10-31 | 2017-12-13 | Smart Antenna Tech Limited | Hybrid closed slot LTE antenna |
| CN112531331B (en) * | 2019-09-18 | 2022-04-12 | 华为技术有限公司 | Antenna and terminal equipment |
| CN112928456B (en) * | 2021-03-30 | 2023-05-26 | Oppo广东移动通信有限公司 | Antenna assembly and electronic equipment |
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2021
- 2021-09-26 CN CN202111131870.9A patent/CN115882200A/en active Pending
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- 2022-06-23 WO PCT/CN2022/100723 patent/WO2023045452A1/en active Application Filing
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| WO2023045452A1 (en) | 2023-03-30 |
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