CN113572497B - Antenna structure and control method thereof - Google Patents
Antenna structure and control method thereof Download PDFInfo
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- CN113572497B CN113572497B CN202110839576.7A CN202110839576A CN113572497B CN 113572497 B CN113572497 B CN 113572497B CN 202110839576 A CN202110839576 A CN 202110839576A CN 113572497 B CN113572497 B CN 113572497B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
- H04B7/0608—Antenna selection according to transmission parameters
Abstract
The application discloses antenna structure belongs to the technical field of communication. The antenna structure includes: a first antenna element (100), a second antenna element (300) and a balun (200) having an input and two outputs, the two outputs being connected to the first antenna element (100) and the second antenna element (300), respectively; a first switch (400), wherein the moving end of the first switch (400) is connected with the first antenna unit (100) or the input end of the balancer (200); a control circuit (500) connected to the stationary terminal of the first switch (400); the control circuit (500) controls the movable end of the first switch (400) to be connected with the input end of the balun (200) when the SAR generated by the first antenna unit (100) is larger than a preset threshold value.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to an antenna structure and a control method thereof.
Background
SAR (Specific Absorption Rate) refers to an electromagnetic energy Absorption ratio of an electronic device, which is a measure of the influence of heat energy generated by electromagnetic waves on a human body. In order to meet the requirements of SAR standards, SAR reduction measures are required to be added to the antenna design of a terminal product.
A common and effective method is to add an SAR sensor to the electronic device, where when a human body approaches the electronic device, the SAR sensor reduces the antenna transmission power after sensing to reduce the SAR, and when the human body is far away from the electronic device, the antenna transmission power returns to normal.
However, reducing SAR by reducing antenna transmission power has an effect on the signal quality of the antenna, resulting in degradation of communication quality.
Disclosure of Invention
An object of the embodiments of the present application is to provide an antenna structure and a control method thereof, which can solve the technical problem that reducing SAR may cause the signal quality of an antenna to decrease.
In a first aspect, an embodiment of the present application provides an antenna structure, including:
the antenna comprises a first antenna unit, a second antenna unit and a balancer, wherein the balancer is provided with an input end and two output ends, and the two output ends are respectively connected with the first antenna unit and the second antenna unit;
the moving end of the first switch is connected with the first antenna unit or the input end of the balancer;
the control circuit is connected with the fixed end of the first switch;
and under the condition that the energy absorption ratio of the electromagnetic waves generated by the first antenna unit is greater than a preset threshold value, the control circuit controls the movable end of the first switch to be connected with the input end of the balancer.
In a second aspect, an embodiment of the present application provides an electronic device, which includes the antenna structure described in the first aspect.
In a third aspect, an embodiment of the present application provides a method for controlling an antenna structure, including:
under the condition that the SAR generated by the first antenna unit is greater than a preset threshold value, controlling the movable end of the first switch to be connected with the input end of the balancer;
wherein the antenna structure comprises:
the first antenna unit, the second antenna unit and the balun, wherein the balun has an input end and two output ends, and the two output ends are respectively connected with the first antenna unit and the second antenna unit;
the moving end of the first switch is connected with the first antenna unit or the input end of the balancer;
wherein a resonant frequency of the second antenna element is the same as a resonant frequency of the first antenna element.
In a fourth aspect, an embodiment of the present application provides a control device for an antenna structure, including:
the control module is used for controlling the movable end of the first switch to be connected with the input end of the frequency converter under the condition that the energy absorption ratio SAR of the electromagnetic waves generated by the first antenna unit is greater than a preset threshold value;
wherein the antenna structure comprises:
the first antenna unit, the second antenna unit and the balun, wherein the balun has an input end and two output ends, and the two output ends are respectively connected with the first antenna unit and the second antenna unit;
the movable end of the first switch is connected with the first antenna unit or the input end of the balancer;
wherein a resonant frequency of the second antenna element is the same as a resonant frequency of the first antenna element.
In a fifth aspect, the present application provides an electronic device, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the method according to the third aspect.
In a sixth aspect, the present application provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the third aspect.
In a seventh aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the steps of the method according to the third aspect.
According to the antenna structure and the control method thereof, under the condition that the SAR generated by the first antenna unit is larger than the preset threshold value, the first antenna unit is enabled to deflect the radiation of the human body under the combined action of the shifter and the second antenna unit, on one hand, the effect of reducing the SAR is achieved, and on the other hand, the stability of the signal quality of the antenna is further guaranteed because the transmitting power of the first antenna unit is not influenced.
Drawings
Fig. 1 is a schematic structural diagram of an antenna structure provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a weight shifter according to an embodiment of the present application;
fig. 3 is a second schematic structural diagram of an antenna structure according to an embodiment of the present application;
fig. 4 is a third schematic structural diagram of an antenna structure according to an embodiment of the present application;
fig. 5 is a flowchart illustrating a method for controlling an antenna structure according to an embodiment of the present application;
fig. 6 is a block diagram of a control device of an antenna structure according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;
fig. 8 is a hardware structure diagram of an electronic device implementing an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The antenna structure and the control method thereof provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings and specific embodiments and application scenarios thereof.
Fig. 1 is a schematic structural diagram of an antenna structure according to an embodiment of the present application. Referring to fig. 1, an embodiment of the present application provides an antenna structure, which may include:
a first antenna element 100, a second antenna element 300 and a balun 200; the balun has an input end and two output ends, the two output ends are respectively connected with the first antenna unit 100 and the second antenna unit 300;
a first switch 400, a moving end of the first switch 400 is connected with the first antenna unit 100, or connected with an input end of the balun 200;
a control circuit 500 connected to the stationary terminal of the first switch 400;
when the SAR generated by the first antenna unit 100 is greater than the preset threshold, the control circuit 500 controls the moving terminal of the first switch 400 to be connected to the input terminal of the balun 200.
It should be noted that the first Antenna unit 100 may be an Antenna unit of an electronic device, and an Antenna included in the Antenna unit may be, for example, an LDS (Laser Direct Structuring) Antenna, a PDS (Printing Direct Structuring) Antenna, an LMA (leak-Mode Antenna), an FPC (Flexible Printed Circuit) Antenna, or the like.
The electronic device may be, for example, a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a Personal Digital Assistant (PDA), etc.
The balun 200 is a three-port device, and is a wideband rf transmission line transformer that converts a matching input into a differential output to realize connection between a balanced transmission line circuit and an unbalanced transmission line circuit, and the structure thereof is shown in fig. 2.
The two outputs of the balun are equal in amplitude and opposite in phase:
in the frequency domain, this means that there is a phase shift of 180 ° between the two outputs;
in the time domain, this means that the voltage of one balanced output is the negative of the other balanced output.
The output of the balun 200 may be connected to the first antenna element 100 via the feeding point 101 of the first antenna element.
The second antenna element 300 may be a SAR-reduced antenna.
Optionally, the resonant frequency of the second antenna element 300 is the same as the resonant frequency of the first antenna element 100. Alternatively, the resonant frequency of the second antenna element 300, and thus the size of the second antenna element 300, may be determined by a vector network analyzer.
The second antenna element 300 may be connected to the input of the balun 200 via a feeding point 301 of the second antenna element.
The first switch 400 may be an SPDT (Single Pole Double Throw) switch.
In this embodiment, the antenna structure may further comprise a SAR sensor (not shown) for detecting a SAR value of the first antenna element 100.
Under the condition that the SAR generated by the first antenna unit 100 is greater than the preset threshold, the control circuit 500 controls the moving end of the first switch 400 to be connected with the input end of the balun 200, and then the second antenna unit 300 and the balun 200 act together on the first antenna unit 100 at the moment, so that the radiation of the first antenna unit 100 facing the human body is deflected to the left and right by using the same resonant frequency as the first antenna unit 100 and 180-degree phase offset, thereby achieving the effect of reducing the SAR.
The preset threshold may be a value specified in a relevant standard, or may be a value set according to an actual situation, which is not specifically limited in this embodiment of the present application.
When the SAR generated by the first antenna unit 100 is less than or equal to the preset threshold, the control circuit 500 controls the moving end of the first switch 400 to be connected to the first antenna unit 100, and at this time, the first antenna unit 100 is not affected by the second antenna unit 300 and the balun 200, and still maintains a normal working state.
According to the antenna structure provided by the embodiment of the application, under the condition that the SAR generated by the first antenna unit 100 is larger than the preset threshold value, the first antenna unit 100 is enabled to be over against the radiation deflection of the human body by utilizing the combined action of the balancer 200 and the second antenna unit 300, on one hand, the effect of reducing the SAR is achieved, and on the other hand, the stability of the signal quality of the antenna is further ensured because the transmitting power of the first antenna unit 100 is not influenced.
As shown in fig. 3, in one embodiment, the control circuit 500 may include:
a drain D of the field effect transistor 501 is connected with a fixed end of the first switch 400;
the control unit 503, the control unit 503 is respectively connected with the base of the PNP type triode 502 and the source of the field effect transistor 501.
Optionally, when the SAR generated by the first antenna unit 100 is greater than a preset threshold, the control unit 503 may input a high level signal to the field effect transistor 501 through the source, and input a low level signal to the PNP transistor 502 through the base;
when the SAR generated by the first antenna unit 100 is less than or equal to the preset threshold, the control unit 503 inputs a low level signal to the fet 501 and inputs a high level signal to the PNP transistor 502.
It should be noted that the control logic of the first switch 400 may be as follows:
| input level signal | Vias |
| 0 | ① |
| 1 | ② |
Therefore, when the control unit 503 inputs a high level signal to the fet 501 and inputs a low level signal to the PNP transistor 502, and the SAR generated by the first antenna unit 100 is greater than the preset threshold, the fet 501 is turned on, and the PNP transistor 502 is turned off, the first switch 400 receives the high level signal, so as to turn on the path (2), and the moving end of the first switch 400 is connected to the balun 200. At this time, the second antenna unit 300 and the balun 200 act on the first antenna unit 100 together to deflect the radiation of the first antenna unit facing the human body to the left and right, thereby achieving the effect of reducing the SAR.
When the control unit 503 inputs a low level signal to the fet 501 and inputs a high level signal to the PNP transistor 502, and the SAR generated by the first antenna unit 100 is less than or equal to the intensity threshold, the fet 501 is not turned on, and the PNP transistor 502 is turned on, and the first switch 400 receives the low level signal, thereby turning on the path (1), so that the moving end of the first switch 400 is connected to the first antenna unit 100. At this time, the first antenna unit 100 is not affected by the second antenna unit 300 and the balun 200, and still maintains a normal operation state.
The antenna structure provided by the embodiment of the application realizes the control circuit 500 by the mutual cooperation of the field effect transistor 501, the PNP type triode 502 and the control unit 503, so that the movable end of the first switch 400 can be connected with the input end of the balun 200 under the condition that the SAR generated by the first antenna unit 100 is greater than the preset threshold, and the movable end of the first switch 400 can be connected with the first antenna unit 100 under the condition that the SAR generated by the first antenna unit 100 is less than or equal to the preset threshold, thereby ensuring the reduction of the SAR and the stability of the signal quality of the antenna.
In one embodiment, the control unit 503 may include:
as shown in fig. 4, the electromagnetic field intensity sensing unit 5031, wherein a first end of the electromagnetic field intensity sensing unit 5031 is connected to the base b of the PNP triode 502;
the controller 5032 is connected to the source S of the fet 501 and the second end of the electromagnetic field intensity sensing unit 5031.
Alternatively, in the case that the intensity of the electromagnetic field sensed by the electromagnetic field intensity sensing unit 5031 is greater than the intensity threshold, the controller 5032 inputs a high level signal to the fet 501 through the source, and inputs a low level signal to the PNP transistor 502 through the base;
when the electromagnetic field intensity sensed by the electromagnetic field intensity sensing unit 5031 is less than or equal to the intensity threshold, the controller 5032 inputs a low-level signal to the fet 501 and inputs a high-level signal to the PNP transistor 502;
wherein the intensity threshold is determined according to the corresponding electromagnetic field intensity when the SAR generated by the first antenna unit 100 is equal to the preset threshold.
It should be noted that, for directly adopting the SAR sensor to detect the SAR, the principle is to interrupt by using the change of the coupling capacitance of the suspended metal structure on the electronic device and the human body, and the area of the suspended metal needs to be large enough to meet the detection requirement of the SAR sensor; in addition, the SAR sensor device is added and is also compatible with the circuit design of the SAR sensor; both of which increase the design difficulty of the antenna.
Therefore, in the present embodiment, the electromagnetic field intensity sensing unit 5031 may be employed instead of the SAR sensor.
Since the larger the SAR, the larger the corresponding electromagnetic field strength is generated. Therefore, by setting the intensity threshold value to determine according to the electromagnetic field intensity corresponding to the SAR generated by the first antenna unit 100 when the SAR is equal to the preset threshold value, and determining whether the electromagnetic field intensity is greater than the intensity threshold value, it can be determined whether the SAR generated by the first antenna unit 100 is greater than the preset threshold value at this time.
When the electromagnetic field intensity sensed by the electromagnetic field intensity sensing unit 5031 is greater than the intensity threshold, the controller 5032 inputs a high level signal to the fet 501 and inputs a low level signal to the PNP transistor 502; the fet 501 is turned on, and the PNP transistor 502 is turned off, the first switch 400 receives a high level signal, so as to turn on the path (2), and the second antenna unit 300 and the weight changer 200 jointly act on the first antenna unit 100, so that the radiation of the human body is deflected to the left and right, thereby achieving the effect of reducing SAR.
When the electromagnetic field intensity sensed by the electromagnetic field intensity sensing unit 5031 is less than or equal to the intensity threshold, the controller 5032 will input a low level signal to the fet 501 and input a high level signal to the PNP transistor 502; the fet 501 is not turned on, and the PNP transistor 502 is turned on, the first switch 400 receives the low level signal, so as to turn on the path (1), and at this time, the first antenna unit 100 is not affected by the second antenna unit 300 and the balun 200, and still maintains a normal working state.
According to the antenna structure provided by the embodiment of the application, the electromagnetic field intensity sensing unit 5031 is arranged to replace an SAR sensor device, so that the compatibility difficulty of electronic equipment for related circuits can be reduced, the cost is saved, and the design difficulty of the antenna is effectively reduced.
An embodiment of the present application further provides an electronic device including the antenna structure according to any of the above embodiments.
Since the electronic device according to the embodiment of the present application has the antenna structure according to any of the embodiments, the technical effects obtained by any of the embodiments can be achieved, and are not described herein again to avoid repetition.
Fig. 5 is a flowchart illustrating a method for controlling an antenna structure according to an embodiment of the present application. Referring to fig. 5, on the basis of the above embodiment of the antenna structure, an embodiment of the present application further provides a method for controlling an antenna structure, which may include:
wherein the antenna structure comprises:
the first antenna unit, the second antenna unit and the balun, wherein the balun has an input end and two output ends, and the two output ends are respectively connected with the first antenna unit and the second antenna unit;
the moving end of the first switch is connected with the first antenna unit or the input end of the balancer;
wherein a resonant frequency of the second antenna element is the same as a resonant frequency of the first antenna element.
It should be noted that an execution main body of the antenna structure control method provided in the embodiments of the present application may be an electronic device, for example, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a Personal Digital Assistant (PDA).
In an embodiment, the method for controlling an antenna structure provided in the embodiment of the present application may further include:
and controlling the movable end of the first switch to be connected with the first antenna unit when the SAR generated by the first antenna unit is less than or equal to a preset threshold value.
According to the control method of the antenna structure, under the condition that the SAR generated by the first antenna unit is larger than the preset threshold value, the first antenna unit is enabled to be over against the radiation deflection of a human body under the combined action of the shifter and the second antenna unit, on one hand, the effect of reducing the SAR is achieved, and on the other hand, the stability of the signal quality of the antenna is further guaranteed because the transmitting power of the first antenna unit is not influenced.
It should be noted that, in the embodiment of the antenna structure, technical details and technical effects related to the control method have been described in detail, and therefore, in order to avoid repetition, no further description is given here.
It should be noted that, in the control method of an antenna structure provided in the embodiment of the present application, the execution main body may be a control device of the antenna structure, or a control module used in the control device of the antenna structure to execute the control method of the antenna structure. In the embodiment of the present application, a control device of an antenna structure provided in the embodiment of the present application is described by taking an example of a method for a control device of an antenna structure to execute a control of the antenna structure.
Fig. 6 is a block diagram of a control device of an antenna structure according to an embodiment of the present application. Referring to fig. 6, an embodiment of the present application provides a control apparatus for an antenna structure, which may include:
the control module 610 is used for controlling the movable end of the first switch to be connected with the input end of the balun under the condition that the energy absorption ratio SAR of the electromagnetic waves generated by the first antenna unit is greater than a preset threshold value;
wherein the antenna structure comprises:
the first antenna unit, the second antenna unit and the balun, wherein the balun has an input end and two output ends, and the two output ends are respectively connected with the first antenna unit and the second antenna unit;
the moving end of the first switch is connected with the first antenna unit or the input end of the balancer;
wherein a resonant frequency of the second antenna element is the same as a resonant frequency of the first antenna element.
In one embodiment, the control module 610 is further configured to:
and under the condition that the SAR generated by the first antenna unit is less than or equal to a preset threshold value, controlling the movable end of the first switch to be connected with the first antenna unit.
According to the control device of the antenna structure, under the condition that the SAR generated by the first antenna unit is larger than the preset threshold value, the first antenna unit is enabled to deflect the radiation of a human body under the combined action of the converter and the second antenna unit, on one hand, the effect of reducing the SAR is achieved, on the other hand, the stability of the signal quality of the antenna is further guaranteed because the transmitting power of the first antenna unit is not influenced.
The control device of the antenna structure in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.
The control device of the antenna structure in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
The control device of the antenna structure provided in the embodiment of the present application can implement each process implemented in the embodiments of fig. 1 to 5, and is not described here again to avoid repetition.
Optionally, as shown in fig. 7, an electronic device 700 is further provided in this embodiment of the present application, and includes a processor 701, a memory 702, and a program or an instruction stored in the memory 702 and executable on the processor 701, where the program or the instruction is executed by the processor 701 to implement each process of the above-mentioned embodiment of the method for controlling an antenna structure, and can achieve the same technical effect, and in order to avoid repetition, it is not described here again.
It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 8 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 800 includes, but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810.
Those skilled in the art will appreciate that the electronic device 800 may further comprise a power supply (e.g., a battery) for supplying power to the various components, and the power supply may be logically connected to the processor 810 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The electronic device structure shown in fig. 8 does not constitute a limitation to the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.
The processor 810 is configured to control the movable end of the first switch to be connected to the input end of the balun when the energy absorption ratio SAR of the electromagnetic wave generated by the first antenna unit is greater than a preset threshold;
wherein the antenna structure comprises:
the first antenna unit, the second antenna unit and the balun, wherein the balun has an input end and two output ends, and the two output ends are respectively connected with the first antenna unit and the second antenna unit;
the moving end of the first switch is connected with the first antenna unit or the input end of the balancer;
wherein a resonant frequency of the second antenna element is the same as a resonant frequency of the first antenna element.
Optionally, the processor 810 is further configured to control the moving end of the first switch to remain connected to the first antenna unit when the SAR generated by the first antenna unit is less than or equal to a preset threshold.
According to the electronic equipment provided by the embodiment of the application, under the condition that the SAR generated by the first antenna unit is larger than the preset threshold value, the first antenna unit is enabled to be over against the radiation deflection of a human body by utilizing the combined action of the weighing apparatus and the second antenna unit, on one hand, the effect of reducing the SAR is achieved, and on the other hand, the stability of the signal quality of the antenna is further ensured because the transmitting power of the first antenna unit is not influenced.
It should be understood that in the embodiment of the present application, the input Unit 804 may include a Graphics Processing Unit (GPU) 8041 and a microphone 8042, and the Graphics Processing Unit 8041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes a touch panel 8071 and other input devices 8072. A touch panel 8071, also referred to as a touch screen. The touch panel 8071 may include two portions of a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein. Memory 809 may be used to store software programs as well as various data including, but not limited to, application programs and operating systems. The processor 810 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 810.
An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above-described embodiment of the control method for an antenna structure, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the control method embodiment of the antenna structure, and can achieve the same technical effect, and is not described here again to avoid repetition.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, or a system-on-chip.
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 phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An antenna structure, comprising:
the antenna comprises a first antenna unit, a second antenna unit and a balancer, wherein the balancer is provided with an input end and two output ends, and the two output ends are respectively connected with the first antenna unit and the second antenna unit;
the movable end of the first switch is connected with the first antenna unit or the input end of the balancer;
the control circuit is connected with the immobile end of the first switch;
under the condition that the energy absorption ratio of the electromagnetic waves generated by the first antenna unit is greater than a preset threshold value, the control circuit controls the movable end of the first switch to be connected with the input end of the balancer;
the control circuit includes:
the drain electrode of the field effect transistor is connected with the immobile end of the first switch;
the emitter of the PNP type triode is grounded, and the collector of the PNP type triode is connected with the grid of the field effect tube;
and the control unit is respectively connected with the base electrode of the PNP type triode and the source electrode of the field effect transistor.
2. The antenna structure according to claim 1, characterized in that the resonance frequency of the second antenna element is the same as the resonance frequency of the first antenna element.
3. The antenna structure according to claim 1, characterized in that the moving end of the first switch remains connected to the first antenna element in the case where the energy absorption ratio of the electromagnetic waves generated by the first antenna element is less than or equal to a preset threshold value.
4. The antenna structure of claim 1, wherein the first switch is a single pole double throw switch.
5. The antenna structure according to claim 4,
under the condition that the first switch receives a high-level signal, the movable end of the first switch is connected with the balancer;
and under the condition that the first switch receives a low-level signal, the movable end of the first switch is connected with the first antenna unit.
6. The antenna structure according to claim 1, characterized in that the control unit comprises:
the first end of the electromagnetic field intensity induction unit is connected with the base electrode of the PNP type triode;
and the controller is respectively connected with the source electrode of the field effect tube and the second end of the electromagnetic field strength induction unit.
7. The antenna structure according to claim 6,
and under the condition that the electromagnetic field intensity sensed by the electromagnetic field intensity sensing unit is greater than an intensity threshold value, the controller inputs a high level signal to the field effect transistor and inputs a low level signal to the PNP type triode, and the intensity threshold value is determined according to the corresponding electromagnetic field intensity when the energy absorption ratio of the electromagnetic wave generated by the first antenna unit is equal to the preset threshold value.
8. The antenna structure according to claim 7,
and under the condition that the intensity of the electromagnetic field sensed by the electromagnetic field intensity sensing unit is less than or equal to the intensity threshold value, the controller inputs a low level signal to the field effect transistor and inputs a high level signal to the PNP type triode.
9. An electronic device, characterized in that it comprises an antenna structure according to any one of claims 1 to 8.
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| CN102800956A (en) * | 2012-08-18 | 2012-11-28 | 哈尔滨工业大学（威海） | Wideband dual-polarized antenna for integrated balun feed |
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| US10263319B2 (en) * | 2016-03-23 | 2019-04-16 | Mediatek Inc. | Antenna with swappable radiation direction and communication device thereof |
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