CN111430940A - Antenna structure and electronic equipment - Google Patents
Antenna structure and electronic equipment Download PDFInfo
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- CN111430940A CN111430940A CN202010325507.XA CN202010325507A CN111430940A CN 111430940 A CN111430940 A CN 111430940A CN 202010325507 A CN202010325507 A CN 202010325507A CN 111430940 A CN111430940 A CN 111430940A
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- antenna structure
- metal arm
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- antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
Abstract
The invention provides an antenna structure and an electronic device, wherein the antenna structure comprises: the first module comprises a first metal arm and a second metal arm which are coupled, and a fracture is arranged between the first metal arm and the second metal arm; the second module comprises an antenna patch and a feed branch which are in coupling connection; a feed source; the first end of the first matching circuit is electrically connected with the feed source, the second end of the first matching circuit is respectively electrically connected with the feed branch and a first feed point of the first metal arm, and the first feed point is positioned between the fracture and the first grounding point; one end of the first tuning switch is grounded, the other end of the first tuning switch is electrically connected with a second feeding point of the first metal arm, and the second feeding point is positioned between the first feeding point and the fracture; the first module is used for enabling the antenna structure to work in a first frequency band, the second module is used for enabling the antenna structure to work in a second frequency band, and the first frequency band is different from the second frequency band. Therefore, the stacking difficulty of the antenna structure can be effectively reduced.
Description
Technical Field
The present invention relates to the field of antenna technologies, and in particular, to an antenna structure and an electronic device.
Background
With the explosive growth of mobile user data volume, there is a higher demand for the rate and delay of mobile communication. A fifth Generation (5th-Generation, 5G) mobile communication system can meet the application requirements of people through more antennas, more frequency bands and wider bandwidth.
Currently, two frequency bands mainly used in 5G communication include an FR1 frequency band and an FR2 frequency band, wherein the frequency range of the FR1 frequency band is 450MHz to 6GHz, also called as a sub 6G frequency band, and the frequency range of the FR2 frequency band is 24.25GHz to 52.6GHz, also called as millimeter Wave (mm Wave), in order to enable an antenna structure of an electronic device to cover an FR1 frequency band, an antenna module supporting an FR1 frequency band needs to be arranged on the electronic device.
Disclosure of Invention
The embodiment of the invention provides an antenna structure and electronic equipment, and aims to solve the problem that the stacking difficulty of the antenna structure is increased by an existing antenna module supporting an FR1 frequency band.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an antenna structure, including:
the first module comprises a first metal arm and a second metal arm which are coupled, a fracture is arranged between the first metal arm and the second metal arm, the first metal arm comprises a first grounding point far away from one end of the fracture, the second metal arm comprises a second grounding point far away from one end of the fracture, and the first grounding point and the second grounding point are grounded;
the second module comprises an antenna patch and a feed branch which are in coupling connection;
a feed source;
a first end of the first matching circuit is electrically connected with the feed source, a second end of the first matching circuit is respectively electrically connected with the feed branch and a first feed point of the first metal arm, and the first feed point is positioned between the fracture and the first grounding point;
one end of the first tuning switch is grounded, the other end of the first tuning switch is electrically connected with a second feeding point of the first metal arm, and the second feeding point is located between the first feeding point and the fracture;
the first module is used for enabling the antenna structure to work in a first frequency band, the second module is used for enabling the antenna structure to work in a second frequency band, and the first frequency band is different from the second frequency band.
In a second aspect, an embodiment of the present invention further provides an electronic device, including the antenna structure.
In the embodiment of the invention, the second module is added on the basis of the first module for supporting the antenna structure to work in the first frequency band, and the first module and the second module share the feed source, so that the antenna structure can work in the first frequency band and can also work in the second frequency band; for the independent antenna module that needs support antenna structure work at the second frequency channel, can save a feed, effectual antenna structure's the design degree of difficulty that piles up that has reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced 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 that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a modal characterization of a second module according to an embodiment of the present invention;
FIG. 3 is a second diagram illustrating the modal characteristics of the second module according to the embodiment of the present invention;
FIG. 4 is a third diagram of the modal characteristics of the second module according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
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, 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.
As shown in fig. 1, an embodiment of the present invention provides an antenna structure, including:
the first module comprises a first metal arm 10 and a second metal arm 20 which are coupled, a fracture 30 is arranged between the first metal arm 10 and the second metal arm 20, the first metal arm 10 comprises a first grounding point 11 far away from one end of the fracture 30, the second metal arm 20 comprises a second grounding point 21 far away from one end of the fracture 30, and the first grounding point 11 and the second grounding point 21 are grounded;
a second module comprising an antenna patch 40 and a feed stub 50 coupled together;
a feed source 60;
a first matching circuit 70, a first end of the first matching circuit 70 is electrically connected to the feed source 60, a second end of the first matching circuit 70 is electrically connected to the feeding branch 50 and the first feeding point 12 of the first metal arm 10, respectively, and the first feeding point 12 is located between the fracture 30 and the first grounding point 11;
a first tuning switch 80, one end of the first tuning switch 80 is grounded, and the other end is electrically connected to the second feeding point 13 of the first metal arm 10, and the second feeding point 13 is located between the first feeding point 12 and the fracture 30;
the first module is used for supporting the antenna structure to work in a first frequency band, the second module is used for supporting the antenna structure to work in a second frequency band, and the first frequency band is different from the second frequency band.
In this embodiment, on the basis of the first module for supporting the antenna structure to operate in the first frequency band, the second module is added, and the first module and the second module share the feed source 60, so that the antenna structure can operate in both the first frequency band and the second frequency band; for the independent antenna module (including feed and radiation branch) that needs support antenna structure work at the second frequency channel, can save a feed, the effectual antenna structure's that has reduced piles up the design degree of difficulty.
The first module can be used for supporting the antenna structure to work in L TE frequency band, the frequency range of the first module comprises 1.7 GHz-2.7 GHz, and the second module can be used for supporting the antenna structure to work in sub 6G frequency band, the frequency range of the second module comprises 3.3 GHz-4.2 GHz and 4.4 GHz-5 GHz.
In this embodiment, can be on the basis of original first module, namely on the basis of L TE antenna module, through the antenna paster 40 and the feed minor matters 50 that increase the second module, can realize the bandwidth extension to N77/78/79 (frequency range includes 3.3GHz ~ 4.2GHz and 4.4GHz ~ 5GHz), thereby make antenna structure can work at first frequency channel through first module, also can work at the second frequency channel through the second module, on the basis of realizing not increasing antenna structure's the pile degree of difficulty, improve antenna structure's frequency coverage, antenna structure's radiation performance has been promoted.
It should be noted that, after the second module is added on the basis of the first module, the coverage area of the antenna structure in the first frequency band is almost unchanged.
It should be further noted that the L TE antenna module in this embodiment is only one expression of the first module, and the first module may also be an antenna module covering other frequency bands, and correspondingly, the second module may also cover antenna modules covering other frequency bands.
The first matching circuit 70 is a common impedance optimization circuit, and includes a capacitor, an inductor, or a combination of a capacitor and an inductor; and the second end of the first matching circuit 70 may be electrically connected to the feeding branch 50 and the first feeding point 12 of the first metal arm 10, respectively.
The feeding branch 50 is also coupled with the first metal arm 10, but in the antenna design process, an avoidance design is performed on the influence generated by the coupling connection between the feeding branch 50 and the first metal arm 10, so that the influence of the coupling connection between the feeding branch 50 and the first metal arm 10 on the first frequency band or the second frequency band of the antenna structure operation is reduced.
Optionally, the second end of the first matching circuit 70 may be electrically connected to the first feeding point 12 through a first elastic piece (not shown), and may also be electrically connected to the feeding branch 50 through a second elastic piece (not shown). Through the connection mode of the elastic sheet, the flexibility of the connection of the first matching circuit 70, the first feeding point 12 and the feeding branch 50 can be effectively improved, and the later maintenance and management of the antenna structure are convenient.
The first module can adjust the resonant frequency through the first tuning switch 80, so that the antenna structure can cover the working bandwidth of 1.7 GHz-2.7 GHz.
Optionally, the antenna structure includes a substrate (not shown), and the antenna patch 40 and the feed branch 50 are disposed on the substrate. The metal plating layers of the antenna patch 40 and the feed branch 50 may be formed on the substrate by a spraying process to form a second module for supporting the antenna structure to operate in the second frequency band.
The type of the antenna patch 40 includes, but is not limited to, a circular patch, a square patch, or an elliptical patch; the feed stub 50 may be strip plated.
Alternatively, the strip-shaped feeding branch 50 may be disposed parallel to the first metal arm 10, and the feeding branch 50 is located between the antenna patch 40 and the first metal arm 10, so that the feeding branch 50 is electrically connected to the first feeding point 12 and the second end of the first matching circuit 60, thereby optimizing the stacking design of the antenna structure.
In order to make the working distance of the antenna patch 40 greater than 10 mm, the area of the antenna patch 40 may be designed to be greater than 70 mm, for example 76 mm.
Optionally, the opening 41 may be formed in the antenna patch 40, and the opening 41 may suppress signal resonance in the first frequency band, and may also improve modal purity of the antenna structure operating in the second frequency band, thereby effectively suppressing generation of higher order modes and improving radiation performance of the antenna structure.
Specifically, the case where the antenna patch 40 has a square structure will be described below, and the frame in the longitudinal direction of the antenna patch 40 may be set to be a wide side and the frame in the width direction of the antenna patch 40 may be set to be a narrow side. The second module can work in three characteristic modes to respectively cover the antenna resonance of N77/78/79.
As shown in fig. 2, when the second module operates in the broadside radiation mode, that is, when the second module performs radiation by using the longitudinal frame of the antenna patch 40, the antenna resonance of N77 can be covered, and in the broadside radiation mode, the antenna signal is concentrated on the longitudinal frame of the antenna patch 40, and the arrow in fig. 2 indicates the flow direction of the antenna signal.
As shown in fig. 3, when the second module operates in the narrow-side radiation mode, that is, when the second module performs radiation using the frame in the width direction of the antenna patch 40, the antenna resonance of N78 can be covered, and in the narrow-side radiation mode, the antenna signal is concentrated on the frame in the width direction of the antenna patch 40, and the arrow in fig. 3 indicates the flow direction of the antenna signal.
As shown in fig. 4, when the second module operates in the self-radiation mode of the feed stub 50, that is, when radiation is performed by using the feed stub 50, the antenna resonance of N79 can be covered, and in this radiation mode, the antenna signal is concentrated on the feed stub 50, and the arrow in fig. 4 indicates the flow direction of the antenna signal.
Furthermore, holes may be formed in the antenna patch 40 to improve the modal purity of the three characteristic modes and reduce the influence on the L TE band resonance generated by the first module.
The embodiment of the invention also provides electronic equipment comprising the antenna structure.
It should be noted that the implementation manner of the above-mentioned antenna structure embodiment is also applicable to the embodiment of the electronic device, and can achieve the same technical effect, and is not described herein again.
As shown in fig. 5, the electronic device further includes a first chip 91, and a third elastic sheet 92 electrically connected to the first chip 91, where the third elastic sheet 92 is attached to the antenna patch 40;
the first chip 91 may acquire a distance between the electronic device and the target object based on the third elastic sheet 92.
Furthermore, the electronic device further comprises a processor (not shown) electrically connected to the first chip 91, the processor being further electrically connected to the feed 60 of the antenna structure; the processor is configured to adjust the output power of the feed 60 based on the distance between the electronic device and the target object collected by the first chip 91.
In this embodiment, the third elastic sheet 92 and the target object may form an inductive capacitor, the third elastic sheet 92 is equivalent to a first plate of the inductive capacitor, and the target object is equivalent to a second plate of the inductive capacitor; when the distance between the electronic device and the target object changes, the capacitance of the sensing capacitor also changes. Therefore, the distance between the electronic equipment and the target object can be detected by detecting the capacitance change condition of the induction capacitor; especially in the case of a human or animal target object and when the distance between the electronic device and the target object is short, the SAR value of the antenna structure can be reduced by reducing the output power of the feed 60, thereby avoiding the influence of high radiation on the human or animal.
Moreover, the third elastic sheet 92 and the antenna patch 40 are attached to each other, so that the coverage area of the first plate can be increased, and the sensitivity of the induction capacitor is enhanced.
It should be noted that the antenna patch 40 in this embodiment does not need to be grounded, so when the antenna patch 40 serves as the first plate of the inductive capacitor, the radiation performance of the antenna structure is not affected.
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 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 like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An antenna structure, comprising:
the first module comprises a first metal arm and a second metal arm which are coupled, a fracture is arranged between the first metal arm and the second metal arm, the first metal arm comprises a first grounding point far away from one end of the fracture, the second metal arm comprises a second grounding point far away from one end of the fracture, and the first grounding point and the second grounding point are grounded;
the second module comprises an antenna patch and a feed branch which are in coupling connection;
a feed source;
a first end of the first matching circuit is electrically connected with the feed source, a second end of the first matching circuit is respectively electrically connected with the feed branch and a first feed point of the first metal arm, and the first feed point is positioned between the fracture and the first grounding point;
one end of the first tuning switch is grounded, the other end of the first tuning switch is electrically connected with a second feeding point of the first metal arm, and the second feeding point is located between the first feeding point and the fracture;
the first module is used for enabling the antenna structure to work in a first frequency band, the second module is used for enabling the antenna structure to work in a second frequency band, and the first frequency band is different from the second frequency band.
2. The antenna structure of claim 1, wherein the antenna patch is a loop patch and the feed stub is a strip structure.
3. An antenna structure according to claim 1, characterized in that the antenna patch is provided with an aperture, the geometric centre of which coincides with the geometric centre of the antenna patch.
4. The antenna structure of claim 1, wherein the second end of the first matching circuit is electrically connected to the first feeding point through a first resilient piece and is electrically connected to the feeding branch through a second resilient piece.
5. The antenna structure according to any of claims 1 to 4, characterized in that the feed stub is located between the antenna patch and the first metal arm.
6. The antenna structure according to claim 5, characterized in that the feed stub is arranged parallel to the first metal arm.
7. The antenna structure of claim 5, wherein the first metal arm and the feed stub are coupled.
8. An electronic device, characterized in that it comprises an antenna structure according to any one of claims 1 to 7.
9. The electronic device of claim 8, further comprising a first chip, and a third spring electrically connected to the first chip, wherein the third spring is attached to the antenna patch;
the first chip can acquire the distance between the electronic equipment and a target object based on the third elastic sheet.
10. The electronic device of claim 9, further comprising a processor electrically connected to the first chip, the processor further electrically connected to the feed;
the processor is used for adjusting the output power of the feed source based on the distance between the electronic equipment and the target object acquired by the first chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010325507.XA CN111430940B (en) | 2020-04-23 | 2020-04-23 | Antenna structure and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010325507.XA CN111430940B (en) | 2020-04-23 | 2020-04-23 | Antenna structure and electronic equipment |
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| CN111430940A true CN111430940A (en) | 2020-07-17 |
| CN111430940B CN111430940B (en) | 2021-09-24 |
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| CN202010325507.XA Active CN111430940B (en) | 2020-04-23 | 2020-04-23 | Antenna structure and electronic equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112928469A (en) * | 2021-01-22 | 2021-06-08 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN113422619A (en) * | 2021-06-18 | 2021-09-21 | 安徽安努奇科技有限公司 | Tuning circuit and communication equipment |
| WO2022247493A1 (en) * | 2021-05-27 | 2022-12-01 | Oppo广东移动通信有限公司 | Antenna apparatus and electronic device |
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| US20140340280A1 (en) * | 2013-05-14 | 2014-11-20 | Chiun Mai Communication Systems, Inc. | Antenna structure and wireless communication device |
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|---|---|---|---|---|
| CN112928469A (en) * | 2021-01-22 | 2021-06-08 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN112928469B (en) * | 2021-01-22 | 2023-12-26 | Oppo广东移动通信有限公司 | Antenna device and electronic equipment |
| WO2022247493A1 (en) * | 2021-05-27 | 2022-12-01 | Oppo广东移动通信有限公司 | Antenna apparatus and electronic device |
| CN113422619A (en) * | 2021-06-18 | 2021-09-21 | 安徽安努奇科技有限公司 | Tuning circuit and communication equipment |
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| CN111430940B (en) | 2021-09-24 |
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