CN113690588A - Antenna device, electronic apparatus, and method for designing antenna device - Google Patents
Antenna device, electronic apparatus, and method for designing antenna device Download PDFInfo
- Publication number
- CN113690588A CN113690588A CN202110970150.5A CN202110970150A CN113690588A CN 113690588 A CN113690588 A CN 113690588A CN 202110970150 A CN202110970150 A CN 202110970150A CN 113690588 A CN113690588 A CN 113690588A
- Authority
- CN
- China
- Prior art keywords
- antenna
- region
- current
- ground plane
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/32—Circuit design at the digital level
-
- 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
-
- 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
Abstract
The application provides an antenna device, an electronic device and a design method of the antenna device, wherein a ground plane of the antenna device comprises a first area and a second area, the first antenna is arranged corresponding to the first area, the second antenna is arranged corresponding to the second area, and the second area is a current weak point area formed by the ground plane under the action of excitation current when the first antenna transmits the excitation current. According to the antenna device, the second antenna is arranged in the current weak point area formed on the ground plane by the first excitation current transmitted by the first antenna, the overall average current distribution of the multi-antenna system formed by the first antenna and the second antenna can be more uniform, the SAR value of the multi-antenna system formed by the first antenna and the second antenna can be reduced, and the total system efficiency of the multi-antenna system formed by the first antenna and the second antenna can be improved.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to an antenna device, an electronic device, and a method for designing the antenna device.
Background
With the development of communication technology, electronic devices such as smart phones have more and more functions, and communication modes of the electronic devices are more diversified. For example, the electronic device may implement cellular communication, near field communication, and the like.
However, people are more and more concerned about the influence of electromagnetic radiation generated by electronic equipment on human health while enjoying various conveniences brought by the electronic equipment. Generally, in the process of designing an antenna, the influence of electromagnetic radiation generated by an electronic device on a human body is evaluated by an electromagnetic absorption rate (SAR) index. The larger the SAR value, the larger the influence on the human body. How to reduce the SAR value in the multi-antenna system becomes an urgent problem to be solved.
Disclosure of Invention
The application provides an antenna device, an electronic device and a design method of the antenna device, which can reduce SAR values of a plurality of antennas.
In a first aspect, the present application provides an antenna apparatus comprising:
a ground plane including a first region and a second region;
the first antenna is arranged corresponding to the first area and is used for transmitting exciting current; and
and the second antenna is arranged corresponding to the second area, and the second area is a current weak point area formed by the ground plane under the action of the excitation current when the first antenna transmits the excitation current.
In a second aspect, the present application provides an electronic device comprising an antenna arrangement as described above.
In a third aspect, the present application provides a method for designing an antenna apparatus, including:
determining a first area on the ground plane;
setting a first antenna corresponding to the first area;
controlling the first antenna to transmit excitation current, and determining a second area on the ground plane, wherein the second area is a current weak point area formed by the ground plane under the action of the excitation current;
and arranging a second antenna corresponding to the second area.
According to the antenna device, the electronic equipment and the design method of the antenna device, the ground plane of the antenna device comprises a first area and a second area, the first antenna is arranged corresponding to the first area, the second antenna is arranged corresponding to the second area, and the second area is a current weak point area formed by the ground plane under the action of excitation current when the first antenna transmits the excitation current. Based on this, the antenna device of the present application places the second antenna in the current weak point region formed on the ground plane by the first excitation current transmitted by the first antenna, and the antenna device can make the overall average current distribution of the multi-antenna system formed by the first antenna and the second antenna more uniform, can reduce the SAR value of the multi-antenna system formed by the first antenna and the second antenna, and can improve the overall system efficiency of the multi-antenna system formed by the first antenna and the second antenna.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic view of a first structure of an antenna device according to an embodiment of the present application.
Fig. 2 is a schematic view of the current distribution formed by the ground plane when the antenna device shown in fig. 1 is provided with only the first antenna.
Fig. 3 is a schematic diagram of a current distribution formed by a ground plane when the antenna device shown in fig. 1 is provided with the first antenna and the second antenna at the same time.
Fig. 4 is a schematic diagram of a second structure of an antenna apparatus according to an embodiment of the present application.
Fig. 5 is a schematic view of a current distribution formed by the ground plane when the antenna device shown in fig. 4 is provided with the first antenna and the second antenna at the same time.
Fig. 6 is a schematic diagram of an S-parameter curve of the antenna device shown in fig. 1.
Fig. 7 is a schematic diagram of an S-parameter curve of the antenna device shown in fig. 4.
Fig. 8 is a graph illustrating SAR values of the antenna device shown in fig. 1 at different feeding phases.
Fig. 9 is a graph illustrating SAR values of the antenna device shown in fig. 4 at different feeding phases.
Fig. 10 is a graph illustrating an efficiency curve of the antenna device shown in fig. 1.
Fig. 11 is a graph illustrating the efficiency curve of the antenna device shown in fig. 4.
Fig. 12 is a schematic structural diagram of a third antenna device according to an embodiment of the present application.
Fig. 13 is a schematic diagram of a fourth structure of an antenna device according to an embodiment of the present application.
Fig. 14 is a schematic structural diagram of a fifth antenna device according to an embodiment of the present application.
Fig. 15 is a schematic diagram of a sixth structure of an antenna device according to an embodiment of the present application.
Fig. 16 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 17 is a flowchart illustrating a method for designing an antenna apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to fig. 1 to 17 in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides an antenna device, and the antenna device can realize a wireless communication function. For example, the antenna device may transmit Wi-Fi signals, Global Positioning System (GPS) signals, 3th-Generation (3G), 4th-Generation (4G), 5th-Generation (5G), Near Field Communication (NFC) signals, Bluetooth (BT) signals, Ultra Wide Band (UWB) signals, and the like.
Referring to fig. 1, fig. 1 is a first structural schematic diagram of an antenna device according to an embodiment of the present disclosure. The antenna arrangement 100 comprises a first antenna 110, a second antenna 120 and a ground plane 130.
The first antenna 110 and the second antenna 120 may transmit wireless signals. For example, the first antenna 110 may transmit a first excitation current, which may excite the first antenna 110 to transmit a first wireless signal; the second antenna 120 may transmit a second excitation current, which may excite the second antenna 120 to transmit a second wireless signal.
It is understood that the first excitation current and the second excitation current may be the same excitation current, so that the first antenna 110 and the second antenna 120 may transmit the same wireless signal. Of course, the first excitation current and the second excitation current may be different excitation currents, so that the first antenna 110 and the second antenna 120 may transmit different wireless signals.
The ground plane 130 may form a common ground. The ground plane 130 may be formed by a conductor, a printed wiring, a metal printed layer, or the like in the antenna device 100. For example, the ground plane 130 may be formed on a circuit board or a small board of the antenna device 100, the ground plane 130 may be formed on a middle frame of the antenna device 100, and the ground plane 130 may be formed on a housing of the antenna device 100. The specific location of the ground plane 130 is not limited in the embodiment of the present application.
The ground plane 130 may include a first region 131 and a second region 132, the first antenna 110 may be disposed corresponding to the first region 131, the ground plane 130 may form one or more current weak regions under the action of a first excitation current when the first antenna 110 transmits the first excitation current, the second region 132 may be one of the current weak regions, and the second antenna 120 may be disposed corresponding to the second region 132.
It is understood that the first antenna 110 is disposed corresponding to the first region 131, the first antenna 110 may be connected to the first region 131, or a part or all of the projection of the first antenna 110 on the ground plane 130 may be located in the first region 131. Similarly, the second antenna 120 is disposed corresponding to the second region 132, the second antenna 120 may be connected to the second region 132, or a part or all of the projection of the second antenna 120 on the ground plane 130 may be located in the second region 132.
Referring to fig. 2 in conjunction with fig. 1, fig. 2 is a schematic view illustrating a current distribution formed by a ground plane when the antenna device shown in fig. 1 is disposed with only the first antenna. As shown in fig. 2, the antenna device 100 is provided with only the first antenna 110, and when the first antenna 110 transmits the first excitation current, the ground plane 130 forms a current distribution area diagram under the action of the first excitation current, and a current strong point area and a current weak point area may be formed on the ground plane 130. For example, the first region 131 and the regions near the first region 131 (the upper left corner region and the left region) may be current strong point regions; an area (e.g., the second area 132) away from the upper right corner area of the first area 131, a lower right corner area (e.g., the third area 133) may be a current weak area, and the second area 132 may be one of the plurality of current weak areas.
It is understood that the second region 132 may be a current weak point region of the upper right corner region of the ground plane 130, in this case, the ground plane 130 may further include a third region 133, the third region 133 may be a current weak point region of the lower right corner region of the ground plane 130, and the ground plane 130 may form two current weak point regions of the second region 132 and the third region 133 under the action of the first excitation current.
Referring to fig. 3 in conjunction with fig. 1, fig. 3 is a schematic view of current distribution formed by the ground plane 130 when the antenna apparatus shown in fig. 1 is provided with the first antenna and the second antenna at the same time. When the first antenna 110 is disposed corresponding to the first region 131 and the second antenna 120 is disposed corresponding to the second region 132, at this time, the first antenna 110 may be located in a current strong point region formed by the ground plane 130 under the first excitation current, and the second antenna 120 may be located in a current weak point region formed by the ground plane 130 under the first excitation current, as shown in fig. 3, the overall average current distribution of the multi-antenna system formed by the first antenna 110 and the second antenna 120 is more uniform.
Referring to fig. 4 and 5 in conjunction with fig. 1 and fig. 3, fig. 4 is a schematic diagram of a second structure of an antenna device according to an embodiment of the present application, and fig. 5 is a schematic diagram of current distribution formed by a ground plane when the antenna device shown in fig. 4 is provided with a first antenna and a second antenna at the same time. As shown in fig. 4, the ground plane 130 may further include a fourth area 134, where the fourth area 134 may be a non-current weak point area formed by the ground plane 130 under the action of the first excitation current, and when the second antenna 120 is disposed corresponding to the fourth area 134, as shown in fig. 5, when the overall average current distribution of the multi-antenna system formed by the first antenna 110 and the second antenna 120 is concentrated on the upper left portion of the ground plane 130, the overall average current distribution of the multi-antenna system formed by the first antenna 110 and the second antenna 120 is not uniform enough.
As can be seen from comparison between fig. 3 and fig. 5, in the antenna apparatus 100 according to the embodiment of the present application, the second antenna 120 is disposed corresponding to the current weak point region formed on the ground plane 130 by the first excitation current transmitted by the first antenna 110, so that the overall average current distribution of the multi-antenna system formed by the first antenna 110 and the second antenna 120 is more uniform.
Referring to fig. 6 and 7, fig. 6 is a schematic diagram of an S-parameter curve of the antenna device shown in fig. 1, and fig. 7 is a schematic diagram of an S-parameter curve of the antenna device shown in fig. 4.
As shown in fig. 6, a curve S1 is an S22 parametric curve of the antenna device 100 in which the second antenna 120 is disposed corresponding to the second region 132, a curve S2 is an S21 parametric curve of the antenna device 100 in which the second antenna 120 is disposed corresponding to the second region 132, and a curve S3 is an S11 parametric curve of the antenna device 100 in which the second antenna 120 is disposed corresponding to the second region 132. As shown in fig. 7, a curve S4 is an S22 parametric curve of the antenna device 100 in which the second antenna 120 is disposed corresponding to the fourth region 134, a curve S5 is an S21 parametric curve of the antenna device 100 in which the second antenna 120 is disposed corresponding to the fourth region 134, and a curve S6 is an S11 parametric curve of the antenna device 100 in which the second antenna 120 is disposed corresponding to the fourth region 134.
Comparing the curves S3 and S6, it is understood that, in the embodiment of the present application, the second antenna 120 is disposed corresponding to the current weak point region, and the reflection coefficient S11 of the second antenna 120 in the frequency range from 2.4GHz to 2.5GHz is less than-6 dB, so that, although the second antenna 120 is disposed corresponding to the current weak point region, the current weak point region does not affect the radiation performance of the second antenna 120, and the second antenna 120 can operate in the 2.4G frequency band of Wi-Fi.
Referring to fig. 8 and 9, fig. 8 is a graph illustrating SAR values of the antenna device shown in fig. 1 at different feeding phases, and fig. 9 is a graph illustrating SAR values of the antenna device shown in fig. 4 at different feeding phases. As shown in fig. 8, a curve S7 is a SAR value curve of the antenna device 100 at different phase angles, in which the second antenna 120 is disposed corresponding to the second region 132; as shown in fig. 9, a curve S8 is a SAR value curve of the antenna device 100 at different phase angles, in which the second antenna 120 is disposed corresponding to the fourth region 134.
When the antenna device 100 of the embodiment of the application performs the SAR value simulation of the multi-antenna system, the human body model is prevented from being located 5mm below the antenna, the receiving power of the antenna is specified to be 1W (watt), and as can be known from the curve S8, under the frequency of 2.45GHz, the SAR peak value of the 10 g-normalized average multi-antenna system is 12.7W/kg for 1W of different feeding phases of the antenna device 100, which are arranged corresponding to the fourth area 134, of the second antenna 120; as can be seen from the curve S7, at the frequency of 2.45GHz, the SAR peak of the 1W normalized 10g average multiple antenna system of the antenna apparatus 100 with different feeding phases of the second antenna 120 corresponding to the second region 132 is 8.66W/kg.
Comparing the curves S7 and S8, the antenna device 100 of the embodiment of the present application sets the second antenna 120 corresponding to the current weak point region, and compared with a scheme that sets the second antenna 120 corresponding to the non-current weak point region, the SAR peak value of the antenna device 100 is reduced by about 31.8%, and the SAR value of the antenna device 100 can be significantly reduced by the antenna device 100 of the embodiment of the present application.
Referring to fig. 10 and 11, fig. 10 is a schematic diagram of an efficiency curve of the antenna device shown in fig. 1, and fig. 11 is a schematic diagram of an efficiency curve of the antenna device shown in fig. 4. As shown in fig. 10, a curve S9 is a graph of the efficiency of the antenna device 100 in which the second antenna 120 is disposed corresponding to the second region 132, and a curve S10 is a graph of the efficiency of the antenna device 100 in which the second antenna 120 is disposed corresponding to the fourth region 134.
As can be seen from S10, the total system efficiency of the antenna device 100, in which the second antenna 120 is disposed corresponding to the fourth region 134, is 0.73 at 2.45 GHz; as can be seen from S9, the total system efficiency of the antenna device 100 with the second antenna 120 corresponding to the second region 132 is 0.9 at 2.45 GHz.
Comparing S9 and S10, it is obvious that the antenna device 100 of the embodiment of the present application has the second antenna 120 corresponding to the current weak point region, and the overall system efficiency of the antenna device 100 is significantly increased compared to the scheme that has the second antenna 120 corresponding to the non-current weak point region.
Based on the above analysis, in the antenna apparatus 100 according to the embodiment of the present invention, the second antenna 120 is disposed in the second area 132, which is a current weak area formed on the ground plane 130 by the first excitation current transmitted by the first antenna 110, compared to a scheme in which the second antenna 120 is disposed in another non-current weak area, the antenna apparatus 100 according to the embodiment of the present invention can make the overall average current distribution of the multi-antenna system formed by the first antenna 110 and the second antenna 120 more uniform, can reduce the SAR value of the multi-antenna system formed by the first antenna 110 and the second antenna 120, and can improve the overall system efficiency of the multi-antenna system formed by the first antenna 110 and the second antenna 120.
Please refer to fig. 12 in combination with fig. 1, and fig. 12 is a schematic diagram of a third structure of an antenna device according to an embodiment of the present application. The first antenna 110 may include a first radiator 111 and a first feed 112, and the second antenna 120 may include a second radiator 121 and a second feed 122.
The first feed 112 may be directly or indirectly electrically connected to the first radiator 111, for example, a first feeding end 1111 may be disposed on the first radiator 111, and the first feed 112 may be electrically connected to the first feeding end 1111. The first feed 112 may provide a first excitation current, and the first feed 112 may feed the first radiator 111 with the first excitation current, which may flow on the first radiator 111 and excite the first radiator 111 to transmit a first wireless signal.
The second feed 122 may be directly or indirectly electrically connected to the second radiator 121, for example, a second feeding end 1211 may be disposed on the second radiator 121, and the second feed 122 may be electrically connected to the second feeding end 1211. The second feed 122 may provide a second excitation current, and the second feed 122 may feed the second radiator 121 with the second excitation current, which may flow on the second radiator 121 and excite the second radiator 121 to transmit a second wireless signal.
The first feed 112 may also be in direct or indirect electrical connection with the first region 131 of the ground plane 130. For example, the first feed 112 may be electrically connected to the first radiator 111 and the first region 131 through a coaxial line, the first feed 112 may be electrically connected to the first radiation through an inner core of the coaxial line and transmit a first excitation current, and the first feed 112 may be electrically connected to the first region 131 of the ground plane 130 through an outer core of the coaxial line and be grounded. For another example, the first feed 112 may be electrically connected to a circuit structure such as a tuning circuit, a filter circuit, etc., and the circuit structure such as the tuning circuit, the filter circuit, etc., may be electrically connected to the first region 131 of the ground plane 130, so that the first feed 112 may be electrically connected to the first region 131 of the ground plane 130 through the circuit structure.
It is understood that when the first feed 112 is electrically connected to the first radiator 111 and the first region 131 of the ground plane 130, respectively, the first feed 112, the first radiator 111 and the ground plane 130 may form a current path in which a first excitation current may flow, the first excitation current may flow into the first region 131 and flow on the ground plane 130, and through analysis of distribution of strong points and weak points of the first excitation current formed on the ground plane 130, a region of weak points formed by the first excitation current may be determined on the ground plane 130 as the second region 132, and the second antenna 120 may be disposed corresponding to the second region 132.
It will be appreciated that a first ground point 1311 may be provided within the first region 131 of the ground plane 130, and the first feed 112 may be electrically connected to this first ground point 1311. As can be seen from fig. 2, 3 and 5, the first excitation current is stronger at the first ground point 1311.
It can be understood that when the first feed 112 is electrically connected to the ground plane 130, the first radiator 111 may be electrically connected to the ground plane 130 to achieve grounding, or the first radiator 111 may not be electrically connected to the ground plane 130, so that the first radiator 111 does not need to be grounded, and thus, the first radiator 111 does not need to be additionally designed with consideration for grounding, and the design of the first radiator 111 is more flexible.
In the antenna device 100 of the embodiment of the application, the first feed 112 is electrically connected to the first radiator 111 and the ground plane 130, the first excitation current may flow on the ground plane 130 through the first feed 112 and the first ground point 1311, the first excitation current may directly act on the ground plane 130, a simulation experiment may easily determine a current weak point region formed by the ground plane 130 under the effect of the first excitation current and determine the second region 132 more easily, and further, the design of the antenna device 100 is simpler.
Please refer to fig. 13, where fig. 13 is a schematic diagram of a fourth structure of the antenna device according to the embodiment of the present application. The first radiator 111 may have a first ground 1112, and the ground plane 130 may have a second ground 1312.
The first ground 1112 may be electrically connected to the second ground 1312, the first antenna 110 may be electrically connected to the first region 131 through the first ground 1112 and the second ground 1312, a first excitation current may flow into the ground plane 130 through the first ground 1112, the first excitation current may form a current strong point region and a current weak point region on the ground plane 130, the second region 132 may be a current weak point region formed by the ground plane 130 under the action of the first excitation current, and the second antenna 120 may be disposed corresponding to the second region 132.
It is understood that the distribution of the strong point region and the weak point region of the first excitation current formed on the ground plane 130 is influenced by the shape and the arrangement position of the first radiator 111, the position of the electrical connection point (the second grounding point 1312) of the first radiator 111 and the ground plane 130, and the position of the electrical connection point (the first grounding point 1311) of the first feed 112 and the ground plane 130. When the first radiator 111 is grounded through the first grounding point 1311, simulation experiments can easily determine a current weak point region formed by the grounding plane 130 under the action of the first excitation current and can easily determine the second region 132, and thus, the design of the antenna device 100 is simpler.
It is understood that the first feed 112 may be electrically connected to the ground plane 130, and the first radiator 111 may also be electrically connected to the ground plane 130 through the first ground point 1311, which is not limited in this embodiment.
In the antenna device 100 according to the embodiment of the application, the first radiator 111 is electrically connected to the ground plane 130 through the second grounding point 1312, the first excitation current can flow on the ground plane 130 through the second grounding point 1312, and the first excitation current can directly act on the ground plane 130, so that a simulation experiment can easily determine a current weak point area formed by the ground plane 130 under the action of the first excitation current and can more easily determine the second area 132, and further, the design of the antenna device 100 is simpler.
Please refer to fig. 14, wherein fig. 14 is a schematic diagram of a fifth structure of an antenna device according to an embodiment of the present application. The first antenna 110 may be spaced apart from the ground plane 130, and the first antenna 110 may not be in a physical electrical connection relationship with the ground plane 130.
A gap may be disposed between the first antenna 110 and the ground plane 130, when the first antenna 110 transmits the first excitation current, the ground plane 130 may generate electromagnetic coupling under the action of the first excitation current and generate an induced current, the induced current may form a current strong point region and a current weak point region on the ground plane 130, the second region 132 may be a current weak point region formed on the ground plane 130 by the induced current, and the second antenna 120 may be disposed corresponding to the second region 132.
It is understood that the induced current may be a current having the same frequency as the first excitation current, or may be a current having a different frequency from the first excitation current, and the specific frequency of the induced current is not limited in the embodiments of the present application.
In the antenna device 100 according to the embodiment of the present application, when the first antenna 110 is not physically and electrically connected to the ground plane 130, the first antenna 110 does not need to be provided with a physical electrical connector to be electrically connected to the ground plane 130, and the first antenna 110 is more flexibly provided.
It should be noted that, the above is merely an exemplary example of the ground plane 130 forming the second region 132 under the action of the first excitation current, the forming manner of the second region 132 in the embodiment of the present application is not limited thereto, and other manners of forming the second region 132 on the ground plane 130 by the first excitation current are within the protection scope of the embodiment of the present application.
Referring to fig. 12 again, the ground plane 130 may include a first side a1, a second side a2, a third side a3 and a fourth side a4, which are connected in sequence, wherein the first side a1 and the third side a3 are disposed oppositely, the second side a2 and the fourth side a4 are disposed oppositely, the first side a1 and the third side a3 may extend in a first direction H1, the second side a2 and the fourth side a4 may extend in a second direction H2, and the ground plane 130 may have a rectangular structure.
The first radiator 111 of the first antenna 110 may be disposed corresponding to the first side a1 and the second side a 2. The first radiator 111 may include a first radiation branch 1113, a second radiation branch 1114, and a third radiation branch 1115, the first radiation branch 1113 may be disposed corresponding to the first edge a1, and the first radiation branch 1113 may extend along the first direction H1. The second radiation branch 1114 may be connected to the first radiation branch 1113, the second radiation branch 1114 may extend along the second direction H2, and the second radiation branch 1114 may be disposed corresponding to the second side a 2. Third radiating branch 1115 may be connected to second radiating branch 1114, third radiating branch 1115 may extend toward second side a2, and third radiating branch 1115 may extend toward first direction H1, such that first radiating branch 1113, second radiating branch 1114, and third radiating branch 1115 may form an arc structure, first feeding end 1111 may be disposed on third radiating branch 1115, and third radiating branch 1115 may be electrically connected to first feed 112.
It is understood that the ground plane 130 may have dimensions of 72mm x 140mm in the first direction H1 and the second direction H2; the dimensions of the first radiating branch 1113 in the first direction H1 and the second direction H2 may be 10.5mm by 1.5 mm; the dimensions of the second radiation stub 1114 in the first direction H1 and the second direction H2 may be 1.5mm by 22.5 mm; the dimensions of third radiating branch 1115 in first direction H1 and second direction H2 may be 4mm by 1.5 mm. The first radiating branch 1113 and the ground plane 130 may be in the same plane and spaced apart by 2.7 mm.
In the first antenna 110 of the embodiment of the application, the first radiator 111 includes the first radiation branch 1113, the second radiation branch 1114, and the third radiation branch 1115, the first radiator 111 may be disposed corresponding to the first side a1 and the second side a2, and the first radiator 111 may form a current strong point region of the first excitation current in a region where the first side a1 and the second side a2 of the ground plane 130 are located, on one hand, the radiation efficiency of the first radiator 111 is stronger, on the other hand, the first radiator 111 may radiate toward two different directions where the first side a1 and the second side a2 are located, and the radiation range of the first radiator 111 is wider.
The second radiator 121 of the second antenna 120 may be disposed corresponding to the third side a3, the second radiator 121 may include a fourth radiation branch 1212 and a fifth radiation branch 1213, the fourth radiation branch 1212 may be disposed corresponding to the third side a3, and the fourth radiation branch 1212 may extend along the first direction H1. The fifth radiation branch 1213 may be connected to the fourth radiation branch 1212, the fifth radiation branch 1213 may extend toward the third side a3, the fifth radiation branch 1213 may extend along the second direction H2, the second feeding end 1211 may be disposed on the fifth radiation branch 1213, and the fifth radiation branch 1213 may be electrically connected to the second feed 122.
It is understood that the fourth radiation stub 1212 may have a dimension of 24mm x 1.5mm in the first direction H1 and the second direction H2; the dimensions of the fifth radiating branch 1213 in the first direction H1 and the second direction H2 may be 1.5mm x 4 mm. The fourth radiation branch 1212 and the ground plane 130 may be in the same plane and be 0.5mm apart.
It is understood that the distance between first feeding end 1111 disposed on third radiating branch 1115 and second feeding end 1211 disposed on fifth radiating branch 1213 may be 29.7 mm.
In the antenna device 100 of the embodiment of the application, when the first radiator 111 includes the first radiation branch 1113, the second radiation branch 1114 and the third radiation branch 1115, and the second radiator 121 includes the fourth radiation branch 1212 and the fifth radiation branch 1213, the first radiator 111 may cover the first side a1 and the second side a2 of the ground plane 130, and the second radiator 121 may cover the third side a3 of the ground plane 130, as can be seen from fig. 3, at this time, the current strong point area formed on the ground plane by the multi-antenna system formed by the first antenna 110 and the second antenna 120 can be distributed on the first side a1, the second side a2 and the third side a3, the average current distribution of the multi-antenna system formed by the first antenna 110 and the second antenna 120 is more uniform, the SAR value of the antenna system is more favorably reduced, meanwhile, the area of the current weak point region on the ground plane 130 is very small, and the antenna system has better total radiation efficiency.
It should be noted that the above is merely an exemplary example of the first radiator 111 and the second radiator 121, and the structures of the first radiator 111 and the second radiator 121 in the embodiment of the present application are not limited to these, and the embodiment of the present application does not limit this.
Please refer to fig. 15, where fig. 15 is a schematic diagram of a sixth structure of an antenna device according to an embodiment of the present application. The ground plane 130 may include a third region 133, the antenna apparatus 100 may further include a third antenna 140, and the third antenna 140 may be disposed corresponding to the third region 133.
It will be appreciated that while the ground plane 130 may form a plurality of regions of current weakness under the influence of the first excitation current, the third region 133 and the second region 132 may be two distinct regions of current weakness, with the third region 133 being distinct from the second region 132.
When the first antenna 110 is disposed corresponding to the first region 131, the second antenna 120 is disposed corresponding to the second region 132, and the third antenna 140 is disposed corresponding to the third region 133, at this time, the first antenna 110 may be located in a current strong point region formed by the ground plane 130 under the action of the first excitation current, and the second antenna 120 and the third antenna 140 may be located in a current weak point region formed by the ground plane 130 under the action of the first excitation current, so that the overall average current distribution of the multi-antenna system formed by the first antenna 110, the second antenna 120, and the third antenna 140 is more uniform, the SAR value of the multi-antenna system is lower, and the overall efficiency of the multi-antenna system is higher.
It is understood that the ground plane 130 may include one or more third regions 133, and in this case, the antenna device 100 may include one or more third antennas 140, and each third antenna 140 is disposed corresponding to one third region 133.
It is understood that the first antenna 110 and the second antenna 120 may transmit wireless signals of the same frequency. The first antenna 110, the second antenna 120, and the third antenna 140 may also transmit wireless signals of the same frequency. Since the second region 132 and the third region 133 are weak regions of the first excitation current formed on the ground plane, and the second antenna 120 and the third antenna 140 are controlled to transmit wireless signals with the same frequency as that excited by the first excitation current of the first antenna 110, the current distribution of the multi-antenna system formed by the first antenna 110, the second antenna 120 and the third antenna 140 can be more uniform, and the SAR value of the multi-antenna system can be more favorably reduced.
It is understood that two or three of the first antenna 110, the second antenna 120, and the third antenna 140 may form a Multiple-Input Multiple-Output (MIMO) system, a main diversity transmission system, and the like, where the SAR value of the multi-antenna system formed by the first antenna 110, the second antenna 120, and the third antenna 140 is lower, and the radiation performance of the multi-antenna system is better.
Of course, one or more of the first antenna 110, the second antenna 120, and the third antenna 140 may also transmit wireless signals with different frequencies, which is not limited in this embodiment.
Based on the structure of the antenna device 100, an embodiment of the present application further provides an electronic device, where the electronic device may be a smart phone, a tablet computer, or other devices, and may also be a game device, an Augmented Reality (AR) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or other devices. Referring to fig. 16, fig. 16 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 10 may include the antenna device 100, the display screen 200, the middle frame 300, the circuit board 400, the battery 500, and the rear case 600 of the foregoing embodiments.
The display screen 200 may be mounted on the middle frame 300 and connected to the rear cover through the middle frame 300 to form a display surface of the electronic device 10. The display screen 200 may be used to display information such as images, text, and the like. The display screen 200 may be an Organic Light-Emitting Diode (OLED) display device or an Organic Light-Emitting Diode (OLED) display type display device.
The middle frame 300 may include a frame (not shown in fig. 16) and a carrier plate (not shown in fig. 16), which may provide a supporting function for the electronic device or the electronic devices in the electronic apparatus 10. The frame is connected to the edge of the loading board and protrudes out of the loading board, the frame and the loading board form an accommodating space, and the electronic components and the electronic devices in the electronic device 10 can be installed and fixed in the accommodating space.
The circuit board 400 may be mounted on the middle frame 300. The circuit board 400 may be a motherboard of the electronic device 10. One, two or more electronic devices such as a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera assembly, a distance sensor, an environmental sensor, a gyroscope, and a processor may be integrated on the circuit board 400. The display screen 200 may be electrically connected to the circuit board 400, so as to control the display of the display screen 200 through the processor on the circuit board 400. One or more of the first feed 112 and the second feed 122 may be disposed on the circuit board 400 to control the above-described devices through a processor.
The battery 500 may be mounted in the middle frame 300. Meanwhile, the battery 500 is electrically connected to the circuit board 400 to enable the battery 500 to power the electronic device 10. Power management circuitry may be disposed on circuit board 400. The power management circuit is used to distribute the voltage provided by the battery 500 to the various electronic devices in the electronic device 10.
The rear case 600 may be connected with the middle frame 300. The rear case 600 is used to seal the electronic devices and functional components of the electronic device 10 inside the electronic device 10 together with the middle frame 300 and the display screen 200, so as to protect the electronic devices and functional components of the electronic device 10.
The ground plane 130 of the antenna device 100 may be, but is not limited to being, formed on the circuit board 400, the middle frame 300, the rear case 600, etc. of the electronic device 10, and the first radiator 111 and the second radiator 121 may be, but are not limited to being, formed on the middle frame 300, the rear case 600, etc. of the electronic device 10. In the embodiment of the present application, a specific mode in which the antenna device 100 is provided in the electronic apparatus 10 is not limited.
Based on the antenna device 100 and the electronic device 10, the embodiment of the present application further provides a method for designing an antenna device. Referring to fig. 17, fig. 17 is a schematic flowchart illustrating a method for designing an antenna device according to an embodiment of the present application.
In 101, a first area 131 is defined on the ground plane 130;
in 102, the first antenna 110 is disposed corresponding to the first region 131;
it is understood that the first antenna 110 is designed to have a clearance area without metal conductors in a certain space above and below the first antenna 110, and therefore, the first antenna 110 is often disposed at the edge of the ground plane 130, and the first area 131 may be an edge area on the ground plane 130.
It will be appreciated that the first area 131 may be defined on the ground plane 130 based on the shape, configuration, radiation frequency requirements of the first antenna 110, and the like of the electronic device 10. For example, to prevent the influence of the user's hand on the first antenna 110, the first antenna 110 may be disposed in an upper left corner area of the electronic device 10, and accordingly, the first area 131 may be an upper left corner area of the ground plane 130.
It should be noted that, in the embodiment of the present application, a specific determination manner of the first region 131 is not limited, and any manner in which the first region 131 can be determined on the ground plane 130 is within the protection scope of the embodiment of the present application.
It is understood that the first antenna 110 is disposed corresponding to the first region 131, the first antenna 110 may be connected to the first region 131, or a part or all of the projection of the first antenna 110 on the ground plane 130 may be located in the first region 131.
In 103, the first antenna 110 is controlled to transmit an excitation current and a second area 132 is defined on the ground plane 130. The second region 132 is a current weak point region formed by the ground plane 130 under the action of the excitation current;
in 104, the second antenna 120 is disposed corresponding to the second region 132.
The antenna device 100 or the electronic device 10 may determine the second region 132 by a current region profile of the first excitation current on the ground plane 130. Then, the second antenna 120 may be disposed corresponding to the second region 132.
It is understood that the second antenna 120 is disposed corresponding to the second region 132, the second antenna 120 may be connected to the second region 132, or a part or all of the projection of the second antenna 120 on the ground plane 130 may be located in the second region 132.
In the method for designing the antenna apparatus according to the embodiment of the present application, the second antenna 120 is disposed in a current weak point region formed on the ground plane 130 by the first excitation current transmitted by the first antenna 110, and the antenna apparatus 100 may make the overall average current distribution of the multi-antenna system formed by the first antenna 110 and the second antenna 120 more uniform, may reduce the SAR value of the multi-antenna system formed by the first antenna 110 and the second antenna 120, and may improve the overall system efficiency of the multi-antenna system formed by the first antenna 110 and the second antenna 120.
Wherein the determining of the second region 132 on the ground plane 130 may include: sequentially changing the phases of the first excitation currents by preset phase differences, and determining a plurality of current area distribution maps formed by the ground plane 130 under the action of the first excitation currents of different phases; determining an average current profile formed by the ground plane 130 under the action of the first excitation current according to the plurality of current region profiles; the region of current weakness in the average current profile is identified as the second region 132.
It is understood that the phase of the excitation current may be sequentially changed by a predetermined phase difference in one period of 0 ° to 360 ° to obtain a plurality of current region profiles formed by the ground plane 130 under the effect of the first excitation current at each phase. For example, the preset phase difference may be 10 °, and the ground plane 130 may be sequentially acquired to form a plurality of current region distribution patterns under the action of the first excitation current of phases 10 °, 20 °, and 30 ° … ….
It is understood that the average current profile formed by the ground plane 130 under the action of the excitation current may be determined by obtaining a current area profile formed by obtaining a plurality of first excitation currents of different phases, and then obtaining a plurality of current area profiles according to a normalization algorithm, an averaging algorithm, or the like. Having obtained the average current profile of the first excitation current, a region of current weakness in the average current profile can be identified as the second region 132.
It is understood that the antenna apparatus 100 or the electronic device 10 may also determine the second region 132 by directly testing a current weak point region formed on the ground plane 130 by the first excitation current of a certain phase through a simulation experiment.
It is understood that the antenna apparatus 100 or the electronic device 10 may further determine the second area 132 according to a current weak point area formed on the ground plane 130 by an induced current generated on the ground plane 130 when the first antenna 110 transmits the first excitation current.
It is to be understood that the above is only an exemplary example of determining the second region 132 on the ground plane 130, and the manner of the embodiment of the present application is not limited thereto. The manner in which the second region 132 can be defined on the ground plane 130 is within the scope of the embodiments of the present application, and the embodiments of the present application are not limited thereto.
In the description of the present application, it is to be understood that terms such as "first", "second", and the like are used merely to distinguish one similar element from another, and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated.
The antenna device, the electronic device, and the design method of the antenna device provided in the embodiments of the present application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (12)
1. An antenna device, comprising:
a ground plane including a first region and a second region;
the first antenna is arranged corresponding to the first area and is used for transmitting exciting current; and
and the second antenna is arranged corresponding to the second area, and the second area is a current weak point area formed by the ground plane under the action of the excitation current when the first antenna transmits the excitation current.
2. The antenna device of claim 1, wherein the first antenna comprises:
a first radiator; and
the first feed source is electrically connected with the first radiator, the first feed source is used for feeding the excitation current to the first radiator, the first feed source is also electrically connected with the first region, and the excitation current flows into the first region, so that the second region forms the current weak point region.
3. The antenna device according to claim 1, wherein the first antenna includes a ground point, the ground point being electrically connected to the first region, the excitation current flowing into the first region through the ground point so that the second region forms the current weak region.
4. The antenna device according to claim 1, wherein the first antenna is spaced apart from the first region, the ground plane is configured to generate an induced current under the action of the excitation current, and the second region is a current weak point region formed on the ground plane by the induced current.
5. The antenna device according to claim 1, wherein the ground plane includes a first side, a second side, a third side, and a fourth side connected in series, the first side and the third side are disposed opposite to each other, the second side and the fourth side are disposed opposite to each other, the first antenna is disposed corresponding to the first side and the second side, and the second antenna is disposed corresponding to the third side.
6. The antenna device of claim 5, wherein the first antenna comprises a first radiator and a first feed, the first radiator comprising:
the first radiation branch knot is arranged corresponding to the first edge;
the second radiation branch is connected with the first radiation branch, and the second radiation branch is arranged corresponding to the second edge; and
and the third radiation branch knot is connected with the second radiation branch knot, extends towards the direction where the second edge is located, and is electrically connected with the first feed source.
7. The antenna device of claim 5, wherein the second antenna comprises a second radiator and a second feed, the second radiator comprising:
a fourth radiating branch arranged corresponding to the third edge;
and the fifth radiation branch is connected with the fourth radiation branch, extends towards the direction of the third edge, and is electrically connected to the second feed source.
8. The antenna device according to any of claims 1 to 7, wherein the first antenna and the second antenna are configured to transmit radio signals of the same frequency.
9. The antenna device according to any of claims 1 to 7, wherein the ground plane further comprises one or more third regions, the third regions being current weak regions formed by the ground plane under the excitation current when the first antenna transmits the excitation current, the third regions being different from the second regions; the antenna device further includes:
one or more third antennas, each of the third antennas being disposed corresponding to one of the third areas.
10. An electronic device, characterized in that it comprises an antenna device according to any of claims 1 to 9.
11. A method of designing an antenna device, comprising:
determining a first area on the ground plane;
setting a first antenna corresponding to the first area;
controlling the first antenna to transmit excitation current, and determining a second area on the ground plane, wherein the second area is a current weak point area formed by the ground plane under the action of the excitation current;
and arranging a second antenna corresponding to the second area.
12. The method of claim 11, wherein said determining a second area on said ground plane comprises:
sequentially changing the phases of the excitation currents by preset phase differences, and determining a plurality of current area distribution graphs formed by the ground plane under the action of the excitation currents of different phases;
determining an average current distribution graph formed by the ground plane under the action of the excitation current according to the plurality of current region distribution graphs;
determining a region of current weakness in the average current profile as the second region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110970150.5A CN113690588A (en) | 2021-08-23 | 2021-08-23 | Antenna device, electronic apparatus, and method for designing antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110970150.5A CN113690588A (en) | 2021-08-23 | 2021-08-23 | Antenna device, electronic apparatus, and method for designing antenna device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113690588A true CN113690588A (en) | 2021-11-23 |
Family
ID=78581564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110970150.5A Pending CN113690588A (en) | 2021-08-23 | 2021-08-23 | Antenna device, electronic apparatus, and method for designing antenna device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113690588A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155593A1 (en) * | 2022-02-21 | 2023-08-24 | Oppo广东移动通信有限公司 | Electronic device |
| WO2024041090A1 (en) * | 2022-08-22 | 2024-02-29 | Oppo广东移动通信有限公司 | Antenna apparatus and electronic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417967A (en) * | 2018-01-31 | 2018-08-17 | 广东欧珀移动通信有限公司 | Shell, antenna module and electronic equipment |
| CN111446540A (en) * | 2020-04-08 | 2020-07-24 | 海信集团有限公司 | Electronic device |
| CN112751160A (en) * | 2019-10-31 | 2021-05-04 | 华为技术有限公司 | Foldable electronic device |
| CN112751162A (en) * | 2019-10-31 | 2021-05-04 | 华为技术有限公司 | Mobile terminal |
-
2021
- 2021-08-23 CN CN202110970150.5A patent/CN113690588A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417967A (en) * | 2018-01-31 | 2018-08-17 | 广东欧珀移动通信有限公司 | Shell, antenna module and electronic equipment |
| CN112751160A (en) * | 2019-10-31 | 2021-05-04 | 华为技术有限公司 | Foldable electronic device |
| CN112751162A (en) * | 2019-10-31 | 2021-05-04 | 华为技术有限公司 | Mobile terminal |
| WO2021082560A1 (en) * | 2019-10-31 | 2021-05-06 | 华为技术有限公司 | Foldable electronic device |
| CN111446540A (en) * | 2020-04-08 | 2020-07-24 | 海信集团有限公司 | Electronic device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155593A1 (en) * | 2022-02-21 | 2023-08-24 | Oppo广东移动通信有限公司 | Electronic device |
| WO2024041090A1 (en) * | 2022-08-22 | 2024-02-29 | Oppo广东移动通信有限公司 | Antenna apparatus and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10819029B2 (en) | Electronic device having multi-frequency ultra-wideband antennas | |
| CN107431271B (en) | Multi-band antenna on a surface of a wireless communication device | |
| TWI514666B (en) | Mobile device | |
| CN210805993U (en) | Antenna radiator and electronic device | |
| EP2996196B1 (en) | Multi-antenna system and mobile terminal | |
| WO2023024795A1 (en) | Antenna apparatus, electronic device, and design method for antenna apparatus | |
| US7821470B2 (en) | Antenna arrangement | |
| US20130050050A1 (en) | Distributed loop antennas | |
| US20100207826A1 (en) | Antenna system using housings of electronic device and electronic device comprising the same | |
| CN108400797B (en) | Mobile terminal | |
| CN103138052B (en) | The multifrequency antenna of portable communication device | |
| CN113690588A (en) | Antenna device, electronic apparatus, and method for designing antenna device | |
| US20080261667A1 (en) | Mobile terminal having an improved internal antenna | |
| CN112952358A (en) | Antenna device and electronic apparatus | |
| US9601825B1 (en) | Mobile device | |
| EP2375488B1 (en) | Planar antenna and handheld device | |
| JP2004336742A (en) | Antenna device for radio and radio communication device using the same | |
| JP2002152353A (en) | Portable terminal | |
| CN112787077A (en) | Antenna radiator and electronic device | |
| CN215342969U (en) | Antenna device and electronic apparatus | |
| US20100245203A1 (en) | Multiband antenna | |
| EP3471203B1 (en) | Antenna and mobile terminal | |
| CN115000684A (en) | Antenna device and electronic apparatus | |
| EP4266497A1 (en) | Electronic device | |
| CN113410623B (en) | Antenna device and electronic apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Lin Inventor after: Pang Bo Inventor after: Huang He Inventor after: Chen Qixuan Inventor after: Hu Wei Inventor after: Jiang Wen Inventor before: Zhou Lin |