CN110943279B - Method, device, equipment and storage medium for improving antenna efficiency of mobile terminal - Google Patents
Method, device, equipment and storage medium for improving antenna efficiency of mobile terminal Download PDFInfo
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- CN110943279B CN110943279B CN201811118569.2A CN201811118569A CN110943279B CN 110943279 B CN110943279 B CN 110943279B CN 201811118569 A CN201811118569 A CN 201811118569A CN 110943279 B CN110943279 B CN 110943279B
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- antenna
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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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
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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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a method, a device, equipment and a storage medium for improving the antenna efficiency of a mobile terminal, which relate to the technical field of mobile terminals, and the method comprises the following steps: arranging the metal device close to the mobile terminal antenna; and controlling a switch to switch the access positions of the metal device and the main ground plane of the antenna according to the current working frequency of the antenna.
Description
Technical Field
The present invention relates to the field of mobile terminal technologies, and in particular, to a method, an apparatus, a device, and a storage medium for improving antenna efficiency of a mobile terminal.
Background
Under the communication environment of current 4G and future 5G, more and more communication frequency bands are provided, the requirement on an antenna by a terminal is higher and higher, the low frequency needs to support the bandwidth of 699 MHz-960 MHz, the high frequency needs to support the bandwidth of 1710 MHz-2700 Mhz, the thinner the mobile phone is, the larger the screen is, the less and less clearance can be provided for the antenna, and the conventional debugging method is difficult to meet the bandwidth required at present.
The existing technology for improving the bandwidth of the antenna is to add a tuning switch, add an antenna switch at a ground feed point of the antenna or add a variable capacitor at a signal feed point of the antenna to perform impedance tuning, thereby achieving the effects of switching frequency points and increasing the bandwidth. And the antenna switch has certain withstand voltage value, and when the antenna works, the withstand voltage value of the antenna switch can be exceeded, so that the switch cannot work.
Disclosure of Invention
The scheme provided by the embodiment of the invention solves the problems of insufficient bandwidth of the existing terminal antenna and active loss and overload of withstand voltage of the antenna tuning switch.
The method for improving the antenna efficiency of the mobile terminal provided by the embodiment of the invention comprises the following steps: metal device
Arranging the metal device close to the mobile terminal antenna;
and controlling a switch to switch the access position of the metal device and the main ground plane of the antenna according to the current working frequency of the antenna.
The device for improving the antenna efficiency of the mobile terminal provided by the embodiment of the invention comprises the following components:
a metal device disposed adjacent to the mobile terminal antenna;
and the switch is arranged between the main ground plane of the antenna and the metal device and used for switching the access position of the metal device and the main ground plane of the antenna.
According to the device for improving the antenna efficiency of the mobile terminal provided by the embodiment of the invention, the device comprises: a processor, and a memory coupled to the processor; the memory is stored with a program which can run on the processor and improves the antenna efficiency of the mobile terminal, and when the program is executed by the processor, the steps of the method for improving the antenna efficiency of the mobile terminal provided by the embodiment of the invention are realized.
According to the computer storage medium provided by the embodiment of the invention, the storage medium stores a program for improving the antenna efficiency of the mobile terminal, and the program for improving the antenna efficiency of the mobile terminal realizes the steps of the method for improving the antenna efficiency of the mobile terminal provided by the embodiment of the invention when being executed by a processor.
According to the scheme provided by the embodiment of the invention, the metal devices can be effectively utilized, and the switch is additionally arranged between the metal devices and the main ground plane and used for switching on and off the two states and changing the current distribution on the metal devices, so that the current distribution of the antenna is influenced, and the aims of switching resonance and expanding bandwidth are fulfilled.
Drawings
Fig. 1 is a flowchart of a method for improving antenna efficiency of a mobile terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an apparatus for improving the antenna efficiency of a mobile terminal according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a connection circuit between a metal device and a main ground plane according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a metal device and a main ground plane according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a metal device according to an embodiment of the present invention fully connected to a main ground plane;
FIG. 6 is a schematic structural diagram of a metal device provided by an embodiment of the present invention completely disconnected from a main ground plane;
FIG. 7 is a schematic structural diagram of a metal device connected to the left side of a main ground plane according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a metal device connected to the right side of a main ground plane according to an embodiment of the present invention;
fig. 9 is a passive standing wave diagram of four connections of a metal device to a primary ground plane provided by an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not to be construed as limiting the present invention.
The method is applied to the research and development debugging stage of the terminal built-in antenna, is used for expanding the bandwidth of the antenna, comprises any terminal wireless product, comprises an internet of things product with a wireless function which can appear in the future, and can debug better antenna performance in a poor clearance environment.
Fig. 1 is a flowchart of a method for improving antenna efficiency of a mobile terminal according to an embodiment of the present invention, as shown in fig. 1, including: metal device
Step S101: arranging the metal device close to the mobile terminal antenna;
step S102: and controlling a switch to switch the access positions of the metal device and the main ground plane of the antenna according to the current working frequency of the antenna.
In one embodiment, the metal device is disposed near a position where the mobile terminal antenna voltage is maximum.
In one embodiment, the metal device comprises at least two access points connected to the main ground plane of the antenna, and the switch controls at least one of the access points to be connected to the main ground plane of the antenna according to the current operating frequency of the antenna.
In one embodiment, the metal device includes one of: USB metal casing, loudspeaker metal casing, motor, MIC metal casing.
In one embodiment, as shown in fig. 3, when the metal device is a USB metal housing, the USB metal housing includes two access points, wherein a first access point is connected in series with an inductor of nanohenry level, and a second access point is connected in series with a zero ohm resistor, and the switch controls the first access point and the second access point to be connected with or disconnected from the main ground plane.
Fig. 2 is a schematic diagram of an apparatus for improving antenna efficiency of a mobile terminal according to an embodiment of the present invention, as shown in fig. 2, including: a metal device 201 disposed proximate to the mobile terminal antenna; a switch 202 disposed between the main ground plane of the antenna and the metal device for switching the access position of the metal device and the main ground plane of the antenna.
In one embodiment, the metal device is disposed near a position where the mobile terminal antenna voltage is maximum.
In one embodiment, the metal device comprises at least two access points connected to the main ground plane of the antenna, and the switch controls at least one of the access points to be connected to the main ground plane of the antenna according to the current operating frequency of the antenna.
According to the device for improving the antenna efficiency of the mobile terminal provided by the embodiment of the invention, the device comprises: a processor, and a memory coupled to the processor; the memory is stored with a program which can run on the processor and improves the antenna efficiency of the mobile terminal, and when the program is executed by the processor, the steps of the method for improving the antenna efficiency of the mobile terminal provided by the embodiment of the invention are realized.
According to the computer storage medium provided by the embodiment of the invention, the storage medium stores a program for improving the antenna efficiency of the mobile terminal, and the program for improving the antenna efficiency of the mobile terminal realizes the steps of the method for improving the antenna efficiency of the mobile terminal provided by the embodiment of the invention when being executed by a processor.
The embodiment of the invention is mainly applied to the project that the terminal is internally provided with the antenna and the metal device is arranged below the antenna. There are many metal devices (including but not limited to, speaker, motor, USB, earphone seat, MIC, earpiece, etc.) near the antenna of the current mainstream terminal, and these metal devices occupy the clearance environment of the antenna and affect the performance of the antenna. The tuning switch is added on the main ground plane near the antenna path, and the tuning switch is mainly used for switching the topological structure of the ground plane, which is equivalent to changing the environment of the antenna, thereby achieving the effect of changing the current distribution.
The invention is mainly applied to terminal products, and a metal device capable of increasing a tuning circuit is arranged near an antenna, as shown in figure 4, the invention comprises: an antenna, a ground plane (main ground plane), a metal device, and two connection points of the metal device to the ground plane. Furthermore, embodiments of the present invention are not limited to the illustrated configurations and antenna configurations, and any metal device near the antenna area may be used for tuning.
The following simulation demonstration is performed on the embodiment of the invention with reference to fig. 5 to 9:
the switch is controlled to switch between off and on, and four switch states are simulated as follows:
the metal device is fully connected to the ground plane (All on), as shown in fig. 5;
the metal device is completely disconnected from the ground plane (All off), as shown in fig. 6;
the metal device is connected to the Left side of the ground plane (Left), as shown in fig. 7;
the metal device is connected to the Right side of the ground plane (Right) as shown in fig. 8.
For the passive standing wave patterns in the above four connection states, it can be seen from fig. 9 that resonance point shift is generated at both low frequency resonance (around 0.8 GHz) and high frequency resonance (around 3 GHz), where the shift degree near 3G is large, and if the resonance high frequency coverage of a single state is narrow, the four states can be used to switch, so that the full coverage of high frequency 3 GHz-3.6 GHz.
And (3) current analysis: two points (a frequency point 3 (Right mode, 3.0147 GHz) and a frequency point 6 (All off mode, 3.5627 GHz)) with the farthest high-frequency distance are selected for current comparison analysis, and the analysis result shows that the grounding pin on the Right side of the Right mode metal device is the current maximum point, while the current distribution difference of the two states is large because the metal device has no grounding point and the same position on the Right side is the current minimum point in the All off mode, so that the deviation of the resonant frequency point is caused.
In the practical debugging, the environment is more complex, the states (the number of the switches can be added is not limited to the four states) can be flexibly used, the switching can be carried out in the required frequency band, and the switching can be matched with the switch of the main channel for use and can be mutually supplemented.
A ground plane switch: the switching amplitude is large, the control is not easy, the loss is small, and the method is suitable for coarse adjustment.
Traditional main path switch: the switching amplitude is small, the control is good, the loss is large, the larger the switching amplitude is, the more the bandwidth loss is, and the fine tuning is suitable for.
The practical item is taken as a test experiment below, the ground plane utilizes the USB as a switching metal device, the USB is very close to an antenna area, a switch circuit can be added on a daughter board for switching, two lines are led out from the left seat and the right seat of the USB, and the matching position is reserved to the ground, namely the connection and disconnection of the two matching positions are changed to adjust the resonance of the antenna. Because the transmission rate requirement of USB and EMC test requirement, can not totally break off, so through 100nH realize switching on under the low frequency signal, the effect of disconnection under the high frequency signal. The experimental results are as follows:
tr1 series two 0 ohm (conducting)
Tr2 two 100nH series (open)
Tr3 left string 100nH (off) and right string 0 ohm (on)
Tr4 left string 0 ohm, right string 100nH (open)
The resonances near 900MHZ for Tr1 and Tr3 were selected, shifted significantly towards low frequencies, and the test antenna efficiencies were compared as follows:
it can be seen that the efficiency is also shifted to low frequency, and the efficiency of 824-870 frequency bands is obviously improved. Therefore, a tuning switch (switch) can be added at the left foot, only one single-pole double-throw switch is needed for switching between 0 ohm and 100nH, if the antenna uses the B8 (880-960) frequency band, the switch is turned to 0 ohm, and if the antenna uses the B5 (824-870) frequency band, the switch is turned to 100nH.
In summary, the following steps: 1. the antenna can be used in cooperation with a tuning switch of a ground feed pin, the switching is more flexible, and the bandwidth is wider. Basically covers 699 MHz-960 MHz required by the current mainstream. 2. The metal device is not limited to USB, and any metal device that can be processed in a floating manner near the antenna can be processed in a tuning manner, such as a horn, a motor, an MIC, and the like. The connection mode of the metal device and the ground plane is switched through the switch, so that different couplings are generated with the antenna, the resonance point of the antenna is changed, and the purpose of improving the efficiency is achieved. 3. The system can be flexibly switched among several states according to the actual debugging condition.
According to the scheme provided by the embodiment of the invention, the metal device near the antenna has certain influence on the resonance and the bandwidth of the antenna, and the switch is arranged between the metal device and the main ground plane to switch on and off the two states by reasonably utilizing the loading effect of the metal device on the antenna, so that the loading effect of the metal device on the antenna is changed, the current distribution is influenced, and the aims of switching resonance and expanding the bandwidth are fulfilled.
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and various modifications can be made by those skilled in the art in light of the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (8)
1. A method for improving antenna efficiency of a mobile terminal is characterized by comprising the following steps: the metal device is arranged close to the mobile terminal antenna;
controlling a switch to switch the access position of the metal device and the main ground plane of the antenna according to the current working frequency of the antenna;
the metal device includes one of: the device comprises a USB metal shell, a horn metal shell, a motor and an MIC metal shell;
the metal device comprises at least two access points, wherein a first access point is connected with an inductor in series at a nano-henry level, a second access point is connected with a zero-ohm resistor in series, and the switch controls the first access point and the second access point to be connected with or disconnected from the main ground plane.
2. The method according to claim 1, characterized in that the metallic device is placed close to the location where the mobile terminal antenna voltage is maximum.
3. The method of claim 1, wherein the switch controls the at least one access point to be switched on with a main ground plane of the antenna according to a current operating frequency of the antenna.
4. An apparatus for improving antenna efficiency of a mobile terminal, comprising:
a metal device disposed adjacent to the mobile terminal antenna;
the switch is arranged between the main ground plane of the antenna and the metal device and used for switching the access position of the metal device and the main ground plane of the antenna;
the metal device includes one of: the device comprises a USB metal shell, a horn metal shell, a motor and an MIC metal shell;
the metal device comprises at least two access points, wherein a first access point is connected with an inductor in series at a nano-henry level, a second access point is connected with a zero-ohm resistor in series, and the switch controls the first access point and the second access point to be connected with or disconnected from the main ground plane.
5. The apparatus according to claim 4, wherein the metal device is disposed close to a position where the mobile terminal antenna voltage is maximum.
6. The apparatus of claim 4, wherein the switch controls the at least one access point to be switched on with a main ground plane of the antenna according to a current operating frequency of the antenna.
7. An apparatus for improving antenna efficiency of a mobile terminal, the apparatus comprising: a processor, and a memory coupled to the processor; the memory is stored with a program operable on the processor for improving the antenna efficiency of a mobile terminal, which when executed by the processor implements the steps of the method for improving the antenna efficiency of a mobile terminal according to any one of claims 1 to 3.
8. A computer storage medium, characterized in that the storage medium stores a program for improving the antenna efficiency of a mobile terminal, and the program for improving the antenna efficiency of a mobile terminal realizes the steps of the method for improving the antenna efficiency of a mobile terminal according to any one of claims 1 to 3 when being executed by a processor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118569.2A CN110943279B (en) | 2018-09-25 | 2018-09-25 | Method, device, equipment and storage medium for improving antenna efficiency of mobile terminal |
| PCT/CN2019/100708 WO2020063177A1 (en) | 2018-09-25 | 2019-08-15 | Method, apparatus and device for improving mobile terminal antenna efficiency, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811118569.2A CN110943279B (en) | 2018-09-25 | 2018-09-25 | Method, device, equipment and storage medium for improving antenna efficiency of mobile terminal |
Publications (2)
| Publication Number | Publication Date |
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| CN110943279A CN110943279A (en) | 2020-03-31 |
| CN110943279B true CN110943279B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811118569.2A Active CN110943279B (en) | 2018-09-25 | 2018-09-25 | Method, device, equipment and storage medium for improving antenna efficiency of mobile terminal |
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| Country | Link |
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| CN (1) | CN110943279B (en) |
| WO (1) | WO2020063177A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020063177A1 (en) | 2020-04-02 |
| CN110943279A (en) | 2020-03-31 |
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