CN115133943A

CN115133943A - Method, control device, antenna assembly, electronic device, and medium

Info

Publication number: CN115133943A
Application number: CN202210854888.XA
Authority: CN
Inventors: 文思超
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-09-30

Abstract

The application discloses a method, a control device, an antenna assembly, electronic equipment and a medium, and relates to the technical field of communication. The power control method comprises the following steps: obtaining the reflection coefficient of the antenna under a non-working frequency band; and if the reflection coefficient is less than or equal to the reflection coefficient threshold value, reducing the output power of a transmitter connected with the antenna under the working frequency band. The method and the device can reduce radiation to human tissues and improve the utilization rate of the antenna and the spectrum resources.

Description

Method, control device, antenna assembly, electronic device, and medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, a control device, an antenna assembly, an electronic device, and a medium.

Background

In the prior art, an SAR Sensor (Specific absorption Rate Sensor) is used for detecting whether human tissues approach an antenna or not, and the approach of the human tissues is judged through the change of induction capacitance caused by the approach of the human tissues, so that the transmitting power of the antenna can be adjusted, and the radiation of the antenna to the human tissues is reduced. However, the approach of metal or other objects may also cause the change of the sensing capacitance, and further cause erroneous judgment.

Disclosure of Invention

The technical problem to be solved by the present application is to provide a power control method, including:

obtaining the reflection coefficient of the antenna under a non-working frequency band;

and if the reflection coefficient is less than or equal to the reflection coefficient threshold value, reducing the output power of a transmitter connected with the antenna under the working frequency band.

The technical problem to be solved by the present application is to provide a power control apparatus, including:

the reflection coefficient acquisition module is used for acquiring the reflection coefficient of the antenna under the non-working frequency band; and

and the power control module is used for reducing the output power of a transmitter connected with the antenna under the working frequency band when the reflection coefficient is less than or equal to the reflection coefficient threshold value.

The technical problem that this application will be solved provides an antenna module, includes:

an antenna for operating in an operating frequency band and/or a non-operating frequency band;

a transmitter, connected to the antenna, for transmitting output power to the antenna in the operating frequency band and/or the non-operating frequency band; and

and the input end of the control device is connected to a signal path between the transmitter and the antenna so as to obtain the reflection coefficient of the antenna under the non-working frequency band, and the output end of the control device is connected with the transmitter so as to respond to the result that the reflection coefficient is less than or equal to the reflection coefficient threshold value and reduce the output power of the transmitter under the working frequency band.

The technical problem that this application will solve provides an electronic equipment, includes:

a housing;

the antenna is arranged on the shell and is used for working under a working frequency band and/or a non-working frequency band;

a transmitter disposed on the housing, connected to the antenna, and configured to transmit output power to the antenna in the operating frequency band and/or the non-operating frequency band; and

the input end of the control device is connected to a signal path between the transmitter and the antenna so as to obtain the reflection coefficient of the antenna under the non-working frequency band, and the output end of the control device is connected with the transmitter so as to reduce the output power of the transmitter under the working frequency band in response to the result that the reflection coefficient is smaller than or equal to the reflection coefficient threshold value; and

and the display screen is arranged on the shell and used for displaying information.

The technical problem to be solved by the present application is to provide a computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the method as described above.

Adopt this application technical scheme, the beneficial effect who has does: according to the method and the device, the reflection coefficient is obtained by utilizing the non-working frequency band, so that whether the human tissue is close or not can be judged, the human tissue is close based on the result that the reflection coefficient is smaller than or equal to the reflection coefficient threshold value, the output power of a transmitter connected with the antenna under the working frequency band is reduced based on the result that the reflection coefficient is smaller than or equal to the reflection coefficient threshold value, and the radiation to the human tissue is reduced. In addition, the reasonable utilization of the non-working frequency band and the working frequency band can improve the utilization rate of the antenna and the spectrum resource.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a flow chart illustrating power control according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an antenna assembly according to an embodiment of the present application;

FIG. 3 is a schematic diagram of another embodiment of the transmitter of FIG. 2;

FIG. 4 is a flow chart of the method of FIG. 1 of the present application in another embodiment;

FIG. 5 is a schematic diagram of another embodiment of the antenna assembly shown in FIG. 3;

FIG. 6 is a flow chart of the method of FIG. 4 of the present application in another embodiment;

FIG. 7 is a schematic diagram of an alternate embodiment of the antenna assembly of FIG. 5;

FIG. 8 is a flow chart of the method of FIG. 1 in another embodiment;

fig. 9 is a comparison diagram of S11 parameters of the antenna in a non-operating state according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a control device according to an embodiment of the present application;

FIG. 11 is a schematic diagram of an alternative embodiment of the antenna assembly shown in FIG. 2;

FIG. 12 is a schematic diagram of an alternative embodiment of the antenna assembly shown in FIG. 5;

FIG. 13 is a schematic diagram of an alternate embodiment of the antenna assembly of FIG. 12;

FIG. 14 is a schematic structural view of the antenna assembly shown in FIG. 13 in another embodiment;

fig. 15 is a schematic structural diagram of an electronic 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 schematic structural diagram of a computer-readable storage medium according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and embodiments. In particular, the following embodiments are only for illustrating the present application, and do not limit the scope of the present application. Likewise, the following embodiments are only some embodiments of the present application, not all embodiments, and all other embodiments obtained by those skilled in the art without making any creative effort fall within the protection scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Next, a power control method that can be used for controlling an antenna and an electronic device provided with the antenna will be described. The method can reduce radiation to human tissue. In addition, the method can also reasonably utilize the non-working frequency band and the working frequency band, thereby improving the utilization rate of the antenna and the spectrum resources.

Referring to fig. 1, fig. 1 is a flow chart illustrating power control according to an embodiment of the present disclosure. The power control method may include:

step S101: and acquiring the reflection coefficient of the antenna under the non-working frequency band.

The applicant researches and discovers that when human tissues are close to the antenna, the human tissues mainly show absorption effect to the electromagnetic waves radiated by the antenna, and the Specific Absorption Rate (SAR) is usually used for measuring the absorption amount of the human tissues to the electromagnetic waves per unit volume in unit time. For an antenna, when incident power is input at an antenna input port, a part of the incident power is radiated into free space through the antenna, a part of the incident power is reflected back, and the reflected power can be referred to as "reflected power". Therefore, when human tissue approaches the antenna, the reflected power of the antenna is reduced because the human tissue absorbs the electromagnetic wave. Which in turn affects the return loss (also referred to as the "reflection coefficient") of the antenna. Therefore, the influence of the human tissue on the performance of the antenna and the influence of the antenna on the human tissue can be judged by utilizing the change of the reflection coefficient.

The antenna can normally work under the working frequency band, electromagnetic wave radiation is realized, and then the non-working frequency band is vacant, so that frequency spectrum resources are wasted. Moreover, when the antenna obtains the reflection coefficient under the working frequency band, because the antenna has good impedance matching under the working frequency band, the change range of the reflection coefficient is smaller, and it is difficult to accurately judge that the reason causing the reflection coefficient fluctuation is that human tissues are close to the antenna, and then the condition that misjudgment can occur when the reflection coefficient is obtained under the working frequency band of the antenna.

Therefore, the state of the human tissue assembly close to the antenna can be better judged by adopting the reflection coefficient of the antenna under the non-working frequency band.

In some embodiments, when the antenna performs reflection coefficient acquisition in the non-operating frequency band, the antenna may not perform normal operation in the operating frequency band. Of course, in some embodiments, the antenna may also perform normal operation in the operating frequency band while performing reflection coefficient acquisition in the non-operating frequency band. Furthermore, the method and the device can be used for detecting the influence of human tissues on the antenna and the influence of the antenna on the human tissues in real time, regulating and controlling the working data of the antenna under the working frequency band in real time according to the detection condition, and reducing the influence caused by the conversion of the antenna between the non-working frequency band and the working frequency band.

In some embodiments, please refer to fig. 2, where fig. 2 is a schematic structural diagram of an antenna element 100 according to an embodiment of the present application. The antenna assembly 100 may employ the above method, and the antenna assembly 100 may include a transmitter 10 and an antenna 20 connected to the transmitter 10. Wherein the transmitter 10 may act as a feed to provide incident power to the antenna 20 such that the incident power is input into the antenna 20 at an antenna input port of the antenna 20. The incident power may be the power input into the antenna 20 by the transmitter 10 at the antenna input port in the non-operating band of the antenna 20, or the power input into the antenna 20 by the transmitter 10 at the antenna input port in the operating band of the antenna 20.

The transmitter 10 may provide incident power for operation of the antenna 20 in the non-operating frequency band and may also provide incident power for operation of the antenna 20 in the operating frequency band. In some embodiments, the transmitter 10 may simultaneously provide the antenna 20 with incident power operating in the non-operating frequency band and incident power operating in the operating frequency band. In some embodiments, the transmitter 10 may not provide incident power for operation in the operating frequency band while providing incident power for operation in the non-operating frequency band to the antenna 20. In some embodiments, transmitter 10 may not provide incident power operating in the non-operating frequency band when antenna 20 is provided incident power operating in the operating frequency band.

In some embodiments, when the transmitter 10 provides incident power for the operation of the antenna 20, the antenna 20 reflects back the reflected power. In some embodiments, when the transmitter 10 provides incident power for the antenna 20 to operate in the non-operating frequency band, the antenna 20 reflects back the reflected power corresponding to the non-operating frequency band. In some embodiments, when the transmitter 10 provides incident power for the antenna 20 to operate in the operating frequency band, the antenna 20 reflects back reflected power corresponding to the operating frequency band.

In some embodiments, referring to fig. 1 and fig. 2 together, in the implementation of step S101, the incident power input into the antenna 20 from the antenna input port when the antenna 20 operates in the non-operating frequency band by the transmitter 10 and the reflected power corresponding to the incident power when the antenna 20 operates in the non-operating frequency band are obtained, and a ratio between the obtained reflected power and the obtained incident power at that time is calculated, that is, the return loss of the antenna, and the return loss of the antenna may be a dB value as the parameter of the antenna reflection coefficient S11. The S11 parameter is one of scattering parameters that are S parameters of the antenna, and the S11 parameter generally indicates an (input) reflection coefficient of the antenna and indicates input return loss characteristics. The larger the value of the S11 parameter, the more energy reflected by the antenna itself, and thus the poorer the efficiency of the antenna.

Step S102: and if the reflection coefficient is less than or equal to the reflection coefficient threshold value, reducing the output power of a transmitter connected with the antenna under the working frequency band.

In this embodiment, the antenna is affected by the approach of human tissue, and thus exhibits a characteristic of a reduction in the reflection coefficient of the antenna in a non-operating frequency band and/or an operating frequency band. The reflection coefficient of the antenna shows the characteristic of reduction under the non-working frequency band, so that the distance between the antenna and human tissue and the reflection coefficient of the antenna under the non-working frequency band form specific correlation, and the distance between the antenna and the human body component can be accurately determined according to the reflection coefficient of the antenna under the non-working frequency band. And under the condition that the distance between the antenna and the human body component determines the specific absorption rate of human tissues when the antenna works in the working frequency band, the corresponding relation between the reflection coefficient of the antenna in the non-working frequency band and the specific absorption rate of the antenna when the antenna works in the working frequency band is formed. After the reflection coefficient of the antenna under the non-working frequency band is determined, the specific absorption rate of the antenna under the working frequency band can be determined.

The specific absorption rate of human tissues has a safe specific absorption rate range, and the safe reflection coefficient range can be determined according to the safe specific absorption rate range and the corresponding relation between the reflection coefficient of the antenna under the non-working frequency band and the specific absorption rate of the antenna working in the working frequency band. That is to say, the reflection coefficient of the antenna under the non-working frequency band is controlled within the safe reflection coefficient range, so that the specific absorption rate of human tissues when the antenna works in the working frequency band can be controlled, and the radiation of the antenna to the human tissues is reduced.

In some embodiments, the reflection coefficient threshold may be selectively determined within a safe reflection coefficient range. In some embodiments, the reflectance threshold value may be a value within a safe reflectance range to form a programmable value for storage in the antenna assembly.

When the reflection coefficient of the antenna under the non-working frequency band is smaller than the reflection coefficient threshold value, the human tissue is close to the antenna, so that the specific absorption rate of the human tissue under the working frequency band and/or the non-working frequency band of the antenna is increased, and the range of the safe specific absorption rate is possibly exceeded. Therefore, the output power of the transmitter 10 in fig. 2 in the working frequency band is reduced, so that the incident power of the antenna 20 at the antenna input port is reduced, and finally the radiation of the antenna 20 to the human body tissue in the working frequency band is reduced.

In some embodiments, step S101 may be: and when the antenna works in the working frequency band, detecting the reflection coefficient of the antenna under the non-working frequency band.

The antenna can work under working frequency band and non-working frequency band simultaneously, and then played real-time supervision human tissue to the influence of antenna and the influence of antenna to human tissue, and then when detecting the reflection coefficient of antenna under the non-working frequency band, and need not to interrupt the work of antenna under the working frequency band, promoted the communication ability of antenna.

It can be understood that when the antenna operates in the working frequency band, the antenna is not always in communication through the channel, but the antenna is also in an idle state at some time, and further, when the antenna is in the idle state, the antenna is switched from the working frequency band to the non-working frequency band, so as to perform step S101. Of course, the antenna may be switched from the non-operating frequency band to the operating frequency band in the non-idle state to perform communication. In addition, in some embodiments, when the antenna is in a non-idle state, the antenna may also be enabled to simultaneously operate in an operating frequency band and a non-operating frequency band, so as to perform step S101 in the non-operating frequency band.

In some embodiments, referring to fig. 3, fig. 3 is a schematic structural diagram of the transmitter 10 shown in fig. 2 according to another embodiment of the present application. The transmitter 10 may include first and second sub-transmitters 11 and 12 respectively connected to the antennas 20 and respectively providing output power to the antennas 20. The first sub-transmitter 11 may provide output power when the antenna 20 is operating in a non-operating frequency band, so as to input incident power into the antenna 20 at the antenna input port. The second sub-transmitter 12 may provide output power when the antenna 20 is operating in the operating frequency band, such that incident power is input into the antenna 20 at the antenna input port.

In some embodiments, the first sub-transmitter 11 may be connected to one antenna input port of the antenna 20 and the second sub-transmitter 12 may be connected to another antenna input port of the antenna 20.

In some embodiments, the first sub-transmitter 11 may be connected to the same antenna input port of the second sub-transmitter 12 and the antenna 20.

In some embodiments, the output power provided by the first sub-transmitter 11 is the same as the incident power input into the antenna 20 based on the first sub-transmitter 11, but may be different based on other structures disposed on the signal paths of the first sub-transmitter 11 and the antenna 20. In some embodiments, the output power provided by the first sub-transmitter 11 may be made proportional to the incident power input into the antenna 20 based on the first sub-transmitter 11.

In some embodiments, the output power provided by the second sub-transmitter 12 is the same as the incident power input into the antenna 20 based on the second sub-transmitter 12, but may be different based on other structures disposed in the signal paths of the second sub-transmitter 12 and the antenna 20. In some embodiments, the output power provided by the second sub-transmitter 12 may be made proportional to the incident power input into the antenna 20 based on the second sub-transmitter 12.

In an embodiment, the first sub-transmitter 11 and the second sub-transmitter 12 may be an independent power circuit respectively. In an embodiment, the first sub-transmitter 11 and the second sub-transmitter 12 may also share some circuit devices such as a power supply, a power amplifier, and the like. It is of course also possible to share other circuits than the matching circuit, so as to implement the output power provided by the transmitter 10 to the antenna 20 in the working frequency band and/or the non-working frequency band through the matching circuit.

In some embodiments, the first sub-transmitter 11 and the second sub-transmitter 12 may operate simultaneously. Of course, the first sub-transmitter 11 and the second sub-transmitter 12 may also not operate at the same time, for example, at a certain time, at most one of the first sub-transmitter 11 and the second sub-transmitter 12 operates, and the switching between the first sub-transmitter 11 and the second sub-transmitter 12 may be implemented through the switching structure, so as to implement the switching between the operating frequency band and the non-operating frequency band.

In some embodiments, fig. 4 and 4 are flowcharts of the method of fig. 1 of the present application in another embodiment. Step S101 may include:

step S401: the reflection coefficient is obtained when the first sub-transmitter provides the antenna with output power in a non-operating frequency band.

Referring to fig. 3, the first sub-transmitter 11 provides the output power of the antenna 20 when operating in the non-operating frequency band, so as to input the incident power into the antenna 20 at the antenna input port. The incident power input into the antenna 20 may be obtained based on the output power provided by the first sub-transmitter 11 based on a proportional relationship between the output power provided by the first sub-transmitter 11 and the incident power input into the antenna 20. In addition, the reflection power based on the incident power input to the antenna 20 can be obtained, and the reflection coefficient can be obtained.

In some embodiments, when the first sub-transmitter 11 provides the output power to the antenna in the non-operating frequency band, the second sub-transmitter 12 may or may not operate in the operating frequency band.

Step S102 may include:

step S402: and if the reflection coefficient is less than or equal to the reflection coefficient threshold value, reducing the output power of the second sub-transmitter under the working frequency band.

In one embodiment, referring to fig. 5, fig. 5 is a schematic structural diagram of the antenna element 100 shown in fig. 3 in another embodiment. The first sub-transmitter 11 may include a power amplifier 111 that receives an input signal and outputs output power to the antenna 20. In some embodiments, the output terminal of the power amplifier 111 may be used as the output terminal of the first sub-transmitter 11, and the output power output by the power amplifier 111 is the output power output by the first sub-transmitter 11.

The second sub-transmitter 12 may include a power amplifier 121 that receives an input signal and outputs output power to the antenna 20. In some embodiments, the output terminal of the power amplifier 121 may serve as the output terminal of the second sub-transmitter 12, and the output power output by the power amplifier 121 is the output power output by the second sub-transmitter 12.

In one embodiment, please refer to fig. 5 and 6, fig. 6 is a flow chart of the method of fig. 4 according to another embodiment of the present application. Step S401 may include:

step S601: in the non-operating frequency band, the reflection coefficient is determined based on the output power of the power amplifier in the first sub-transmitter and the reflected power on the signal path between the first sub-transmitter and the antenna.

In this embodiment, when the first sub-transmitter provides the antenna to operate in the non-operating frequency band, the second sub-transmitter may or may not operate.

In an embodiment, the reflected power on the signal path between the first sub-transmitter and the antenna may be the reflected power of the antenna.

In an embodiment, referring to fig. 5 and 6, step S402 may include:

step S602: and if the reflection coefficient is less than or equal to the reflection coefficient threshold value, reducing the output power of the power amplifier in the second sub-transmitter under the working frequency band.

Referring to fig. 7, fig. 7 is a schematic diagram of the antenna element 100 shown in fig. 5 in another embodiment. The antenna assembly 100 further comprises a directional coupler 30 disposed in the signal path between the first sub-transmitter 11, e.g. the power amplifier 111, and the antenna 20. The directional coupler 30 may be used to detect the reflection coefficient of the antenna 20 in the non-operating frequency band.

In one embodiment, step S601 may include: in the non-operating frequency band, a reflection coefficient is determined based on the output power and the reflected power at the directional coupler on the signal path between the first sub-transmitter and the antenna.

In one embodiment, referring to fig. 7, the directional coupler 30 may have a first terminal 31 connected to the first sub-transmitter 11, a second terminal 32 connected to the antenna 20, a third terminal 33, and a fourth terminal 34.

The first sub-transmitter 11, for example, the power amplifier 111 outputs the output power to the first terminal 31, and the directional coupler 30 may output the first output power to the antenna 20 at the second terminal 32.

The directional coupler 30 may receive reflected power of the antenna 20 at the second end 32.

The directional coupler 30 may output a sub-output power proportional to the first output power at the third terminal 33.

The directional coupler 30 may output a sub-reflected power proportional to the reflected power at the fourth terminal 34.

In some embodiments, in the directional coupler 30, the first terminal 31 may receive the output power output by the first sub-transmitter 11, and may further output the first output power at the second terminal 32 (β is not 0), and may further output the sub-output power at the third terminal 33 (1- β). In some embodiments, the first output power may be the incident power of the first sub-transmitter 11 input into the antenna 20 at the antenna input port. In some embodiments, the first output power may be proportional to the incident power of the first sub-transmitter 11 input into the antenna 20 at the antenna input port.

In some embodiments, in the directional coupler 30, the second end 32 receives the reflected power, and may output a first reflected power (first reflected power β) at the first end 31 and a sub reflected power (1- β) at the fourth end 34.

When calculating the reflection coefficient based on the directional coupler 30, taking the first output power as the incident power of the first sub-transmitter 11 at the antenna input port into the antenna 20 as an example, the reflection coefficient is reflected power/first output power ((1- β) × reflected power)/((1- β) × first output power) ═ ((1- β) × reflected power)/((1- β) × output power) ═ sub reflected power/sub-output power. As can be seen, the sub-output power output from the third terminal 33 and the sub-reflection power output from the fourth terminal 34 of the directional coupler 30 are collected, so that the reflection coefficient of the antenna 20 based on the first sub-transmitter 11 in the non-operating frequency band can be obtained.

In one embodiment, step S102 may include:

and if the reflection coefficient is less than or equal to the reflection coefficient threshold value, reducing the output power of the transmitter under the working frequency band by the adjustment amount.

Based on the distance between the antenna and the human body tissue and the specific correlation formed between the reflection coefficients of the antenna in the non-working frequency band and the corresponding relation between the reflection coefficients of the antenna in the non-working frequency band and the specific absorption rate of the antenna in the working frequency band, the fluctuation amount of the reflection coefficients and the distance between the antenna and the human body tissue can be determined, and then the adjusting range of the specific absorption rate of the antenna in the working frequency band can be determined. According to the specific relation among the adjusting range of the specific absorption rate of the antenna when the antenna works in the working frequency band, the distance between the antenna and human tissues and the output power of the transmitter under the working frequency band, the adjusting amount of the output power of the transmitter under the working frequency band can be further determined. And further, the output power of the transmitter under the working frequency band is reduced by the adjustment quantity, so that the human tissue is in the safe specific absorption rate range.

In one embodiment, please refer to fig. 8, fig. 8 is a flowchart of the method shown in fig. 1 in another embodiment. After step S102, may include:

step S801: and acquiring the reflection coefficient of the antenna under the non-working frequency band again.

Step S802: and if the reflection coefficient is larger than the reflection coefficient threshold value, increasing the output power of the transmitter under the working frequency band.

It can be understood that when the human tissue is far away from the antenna, the reflection coefficient of the antenna in the non-operating frequency band can be increased, and then in step S802, the output power of the transmitter in the operating frequency band can be increased to improve the communication capability of the antenna. In addition, after step S802 is completed, step S601 may be performed.

In some scenarios, after step S102, the method may further include: the reflection coefficient threshold is updated.

The reflection coefficient threshold value can be adjusted and updated according to the adjustment quantity of the output power of the transmitter under the working frequency band, so that the influence of the change of the distance between the human tissue and the antenna on the reflection coefficient of the antenna is further determined after the step S102, and the antenna can be continuously controlled. It is understood that step S801 may be performed after updating the reflectance threshold value, and then step S802 or step S102 may be performed after step S801.

In some embodiments, the non-operating frequency band may be a frequency band outside the operating frequency band, and since impedance matching is relatively poor compared to the non-operating frequency band, the antenna is very susceptible to the influence of human tissue in the non-operating frequency band, so that it is easier to detect the fluctuation of the reflection coefficient caused by the approach of the human tissue, and it is also possible to accurately determine the approach of the human tissue.

Referring to fig. 9, fig. 9 is a comparison diagram of S11 parameters of an antenna in a non-operating state according to an embodiment of the present application. The abscissa is frequency band/dB, the ordinate is S11 parameter/dB, curve A is an S11 parameter curve graph of the antenna in a non-working state when human tissues are close to each other, and curve B is an S11 parameter curve graph of the antenna in the non-working state when no human tissues are close to each other. It is apparent that in free space, the non-operating frequency bands may comprise at least 0-4 GHz. The antenna reflection coefficient is above-4 dB in the 0-4GHz range on curve B, whereas on curve a, the reflection coefficient is significantly reduced due to the proximity of human tissue, especially sharply reduced in the 3.4GHz band. Therefore, the human tissue approach can be judged by detecting the reflection coefficient under the frequency band of 0-4GHz of the non-working frequency band.

In an embodiment, the non-operating frequency band may include at least one of 3.4GHz and 3.5 GHz. Namely, only the reflection coefficient of 3.4GHz or 3.5GHz of a specific frequency band is detected to judge that the human body is close.

Next, a power control device is described, which can be applied to the above method, can also be used in controlling an antenna, and can also be applied to an electronic device provided with an antenna, so as to reasonably utilize a non-working frequency band and a working frequency band, thereby improving the utilization rate of the antenna and spectrum resources.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a control device according to an embodiment of the present application. The control device 200 may include:

a reflection coefficient obtaining module 201, configured to obtain a reflection coefficient of the antenna in a non-operating frequency band; and

and the power control module 202 is configured to reduce output power of a transmitter connected to the antenna in an operating frequency band when the reflection coefficient is less than or equal to the reflection coefficient threshold.

In some embodiments, the reflection coefficient acquisition module 201 may be connected with the power control module 202.

In one embodiment, referring to fig. 11, fig. 11 is a schematic structural diagram of the antenna element 100 shown in fig. 2 in another embodiment. The reflection coefficient obtaining module 201 may be connected to a signal path between the transmitter 10 and the antenna 20, and the power control module 202 may be connected to the transmitter 10, so that the reflection coefficient obtaining module 201 obtains a reflection coefficient of the antenna 20 in a non-operating frequency band. When the reflection coefficient is less than or equal to the reflection coefficient threshold, the power control module 202 decreases the output power of the transmitter 10 in the operating frequency band.

In some embodiments, the reflection coefficient obtaining module 201 detects the reflection coefficient of the antenna in the non-operating frequency band when the antenna operates in the operating frequency band.

In some embodiments, referring to fig. 12, fig. 12 is a schematic structural diagram of the antenna assembly 100 shown in fig. 5 in another embodiment. The transmitter 10 may include first and second sub-transmitters 11 and 12 respectively connected to the antennas 20 and respectively providing output power to the antennas 20. The first sub-transmitter 11 may provide output power when the antenna 20 is operating in a non-operating frequency band, so as to input incident power into the antenna 20 at the antenna input port. The second sub-transmitter 12 may provide output power when the antenna 20 is operating in the operating frequency band, so that incident power is input into the antenna 20 at the antenna input port.

In some embodiments, the first sub-transmitter 11 may be connected to one antenna input port of the antenna 20, and the second sub-transmitter 12 may be connected to another antenna input port of the antenna 20.

In an embodiment, the first sub-transmitter 11 and the second sub-transmitter 12 may be an independent power circuit respectively. In an embodiment, the first sub-transmitter 11 and the second sub-transmitter 12 may also share some circuit devices such as a power supply, a power amplifier, and the like. Of course, other circuits than the matching circuit may be used in common, so that the transmitter 10 can provide the antenna 20 with output power in the working frequency band and/or the non-working frequency band through the matching circuit.

In an embodiment, the reflection coefficient obtaining module 201 is configured to obtain the reflection coefficient when the first sub-transmitter 11 provides the antenna 20 with the output power in the non-operating frequency band; the power control module 202 is configured to decrease the output power of the second sub-transmitter in the operating frequency band when the reflection coefficient is less than or equal to the reflection coefficient threshold.

In one embodiment, referring to fig. 13, fig. 13 is a schematic structural diagram of the antenna element 100 shown in fig. 12 in another embodiment. The first sub-transmitter 11 may include a power amplifier 111 receiving an input signal and outputting an output power to the antenna 20. In some embodiments, the output terminal of the power amplifier 111 may be used as the output terminal of the first sub-transmitter 11, and the output power output by the power amplifier 111 is the output power output by the first sub-transmitter 11.

In an embodiment, the reflection coefficient obtaining module 201 is configured to determine the reflection coefficient based on the output power of the power amplifier 111 in the first sub-transmitter 11 and the reflection power on the signal path between the first sub-transmitter 11 and the antenna 20 in the non-operating frequency band.

In an embodiment, the power control module 202 is configured to turn down the output power of the power amplifier 121 in the second sub-transmitter 12 in the operating frequency band when the reflection coefficient is less than or equal to the reflection coefficient threshold.

In one embodiment, referring to fig. 14, fig. 14 is a schematic structural diagram of the antenna element 100 shown in fig. 13 in another embodiment. The reflection coefficient obtaining module 201 may include:

a directional coupler 30 having a first terminal 31 connected to the first sub-transmitter 11, a second terminal 32 connected to the antenna 20, a third terminal 33, and a fourth terminal 34, wherein the first sub-transmitter 11 outputs an output power to the first terminal 31 to output the first output power to the antenna 20 at the second terminal 32, the third terminal 33 is used for outputting a sub-output power proportional to the first output power, the second terminal 32 is used for receiving a reflected power of the antenna 20, and the fourth terminal 34 is used for outputting a sub-reflected power proportional to the reflected power;

the determining module 2011 is connected to the third terminal 33 and the fourth terminal 34 respectively to obtain the sub-output power and the sub-reflected power, and is configured to determine the reflection coefficient based on the sub-output power and the sub-reflected power.

The directional coupler 30 may refer to the description of the above embodiment, and the determination module 2011 calculates the reflection coefficient by using the reflection coefficient ═ reflected power/first output power ═ reflected power ((1- β)/((1- β) ×) first output power)/((1- β) ×) β ×) output power) ═ sub reflected power/sub output power, taking the first output power as the incident power of the first sub transmitter 11 at the antenna input port as an example.

In an embodiment, the reflection coefficient obtaining module 201 may determine the reflection coefficient based on the output power and the reflection power at the directional coupler 30 on the signal path between the first sub-transmitter 11 and the antenna 20 in the non-operating frequency band.

In one embodiment, the power control module 202 is configured to decrease the output power of the transmitter 10 in the operating frequency band by an adjustment amount when the reflection coefficient is less than or equal to the reflection coefficient threshold, where the adjustment amount is determined based on the reflection coefficient.

In an embodiment, the reflection coefficient obtaining module 201 is configured to obtain the reflection coefficient of the antenna again in the non-operating frequency band. The power control module 202 is configured to increase the output power of the transmitter 10 in the operating frequency band when the reflection coefficient is greater than the reflection coefficient threshold.

In one embodiment, the non-operating frequency band comprises 0-4 GHz.

In an embodiment, the non-operating frequency band comprises at least one of 3.4GHz and 3.5 GHz.

Next, an electronic device is described, which can be used to set the antenna assembly 100 in the above embodiment, can also be used to execute the method in the above embodiment, and can also be used as a control device in the above embodiment.

As used herein, "electronic equipment" (which may also be referred to as a "terminal" or "mobile terminal" or "electronic device") includes, but is not limited to, devices that are configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

The electronic device may mount the antenna assembly 100 in the above-described embodiments. The electronic device may be any one of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, calculators, programmable remote controls, pagers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving picture experts group (MPEG-1 or MPEG-2), audio layer 3(MP3) players, portable medical devices, and digital cameras and combinations thereof.

Referring to fig. 15, fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 300 may include a display screen 301 for displaying information, a middle frame assembly 302 for mounting the display screen 301 on one side, a circuit board 303 mounted on the middle frame assembly 302, a battery 304 mounted on the middle frame assembly 302, and a rear cover 305 snap-coupled to the other side of the middle frame assembly 302.

In some embodiments, the electronic device 300 may include, but is not limited to, an electronic device having a communication function, such as a mobile phone, an internet device (MID), an electronic book, a Portable Player Station (PSP), or a Personal Digital Assistant (PDA).

The Display 301 may be a Liquid Crystal Display (LCD) or an Organic Light-Emitting Diode (OLED) Display, and the like, for displaying information and pictures.

The material of the middle frame assembly 302 may be a metal such as magnesium alloy, aluminum alloy, stainless steel, etc., but the material is not limited thereto and may be other materials. The middle frame assembly 302 may be disposed between the display screen 301 and the back cover 305. The middle frame component 302 may be used to carry the display screen 301. The middle frame assembly 302 and the rear cover 305 are connected to form a housing of the electronic device 300, and a receiving cavity is formed inside the housing. The housing chamber can be used to house electronic components such as a camera, a circuit board 303, a battery 304, a processor, and various types of sensors in the electronic apparatus 300. It is understood that the housing may not be limited to the center frame assembly 302 and the rear cover 305, but may include other structures.

The circuit board 303 is mounted in the accommodating chamber, and may be mounted at any position in the accommodating chamber. The circuit board 303 may be a main board of the electronic device 300. The processor of the electronic device 300 may be disposed on a circuit board 303. One, two or more of functional components such as a motor, a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera, a distance sensor, an ambient light sensor, and a gyroscope may also be integrated on the circuit main board 303. Meanwhile, the display screen 301 may be connected to a circuit main board 303. In some embodiments, the processor of the electronic device 300 may be the control apparatus 200 in the above embodiments. In some embodiments, the transmitter 10 of the antenna assembly 100 may be disposed on the circuit board 303.

The battery 304 is mounted in the receiving cavity and may be mounted at any position in the receiving cavity. The battery 304 may be connected to the circuit board 303 to enable the battery 304 to power the electronic device 300. The circuit board 303 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 304 to various electronic components in the electronic device 300, such as the display screen 301.

The back cover 305 may be formed of the same material as the center frame assembly 302, although other materials may be used. The rear cover 305 may be integrally formed with the center frame assembly 302. In some embodiments, the back cover 305 may enclose the center frame assembly 302, which may carry the display screen 301. Rear cover 305 is provided with a rear camera hole, a fingerprint identification module mounting hole and the like.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The middle frame assembly 302 may be used to configure the antenna 20 in the antenna assembly 100. The antenna 20 may be one or a mixture of Flexible Printed Circuit (FPC) antenna, Laser Direct Structuring (LDS) antenna, Print Direct Structuring (PDS) antenna, and metal stub antenna. Of course, the antenna 20 may be other types of antennas, which are not described in detail.

Referring to fig. 16, fig. 16 is a schematic structural diagram of an electronic device according to an embodiment of the present application, in which the electronic device 400 includes a processor 401 and a memory 402. The memory 402 stores computer programs thereon and the processor 401 is coupled to the memory 402. The processor 401 executes a computer program to implement the display method described in the above embodiments when operating.

Referring to fig. 17, fig. 17 is a schematic structural diagram of a computer-readable storage medium according to an embodiment of the present application, and a computer-readable storage medium 500 is further provided, in which a computer program 501 is stored, and when the computer program 501 is executed by a processor, the display method described in the above embodiments is implemented.

Specifically, in different embodiments, the computer-readable storage medium described in the above embodiments includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, are not limited in particular.

In some embodiments, the processor may be the processor 401 in the embodiments described above.

In some embodiments, the computer-readable storage medium 500 may be the memory 402 in the embodiments described above.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules or units is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes performed by the present application and the contents of the appended drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A method for controlling power, comprising:

2. The method of claim 1, wherein the obtaining the reflection coefficient of the antenna in the non-operating frequency band comprises:

and when the antenna works in the working frequency band, detecting the reflection coefficient of the antenna under the non-working frequency band.

3. The method of claim 1, wherein the transmitter comprises a first sub-transmitter and a second sub-transmitter respectively connected to the antennas and respectively providing output power to the antennas;

the obtaining of the reflection coefficient of the antenna under the non-working frequency band includes:

when the first sub transmitter provides output power under the non-working frequency band for the antenna, acquiring the reflection coefficient;

if the reflection coefficient is less than or equal to the reflection coefficient threshold, reducing the output power of a transmitter connected with the antenna under the working frequency band comprises:

and if the reflection coefficient is less than or equal to the reflection coefficient threshold value, reducing the output power of the second sub-transmitter under the working frequency band.

4. The method of claim 3, wherein obtaining the reflection coefficient when the first sub-transmitter provides the output power of the antenna in the non-operating frequency band comprises:

and under the non-working frequency band, determining the reflection coefficient based on the output power of a power amplifier in the first sub transmitter and the reflection power on a signal path between the first sub transmitter and the antenna.

5. The method of claim 3, wherein the adjusting the output power of the second sub-transmitter at the operating frequency band down if the reflection coefficient is less than or equal to the reflection coefficient threshold comprises:

and if the reflection coefficient is less than or equal to the reflection coefficient threshold value, reducing the output power of the power amplifier in the second sub-transmitter under the working frequency band.

6. The method of claim 3, wherein obtaining the reflection coefficient when the first sub-transmitter provides the output power of the antenna in the non-operating frequency band comprises:

determining the reflection coefficient based on an output power and a reflected power at a directional coupler on a signal path between the first sub-transmitter and the antenna at the non-operating frequency band.

7. The method of claim 1, further comprising, after the adjusting the output power of a transmitter connected to the antenna to a working frequency band to be low if the reflection coefficient is less than or equal to a reflection coefficient threshold value, the method further comprising:

obtaining the reflection coefficient of the antenna under the non-working frequency band again;

and if the reflection coefficient is larger than the reflection coefficient threshold value, increasing the output power of the transmitter under the working frequency band.

8. The method according to any of claims 1-7, wherein the non-operating frequency band comprises 0-4 GHz.

9. An apparatus for controlling power, comprising:

10. An antenna assembly, comprising:

11. The antenna assembly of claim 10, wherein the transmitter comprises:

a first sub-transmitter connected to the antenna for transmitting output power to the antenna in the non-operating frequency band, wherein an input end of the control device is connected to a signal path between the first sub-transmitter and the antenna; and

and the second sub-transmitter is connected with the antenna and used for transmitting output power to the antenna under the working frequency band, the output end of the control device is connected with the second sub-transmitter, and the control device responds to the result that the reflection coefficient of the antenna under the non-working frequency band is smaller than or equal to the reflection coefficient threshold value and adjusts the output power of the second sub-transmitter under the working frequency band to be low.

12. The antenna assembly of claim 11, characterized in that said control means comprises:

a directional coupler having a first terminal connected to the first sub-transmitter, a second terminal connected to the antenna, a third terminal, and a fourth terminal, wherein the first sub-transmitter is configured to output an output power to the first terminal so as to output a first output power to the antenna at the second terminal, the third terminal is configured to output a sub-output power proportional to the first output power, the second terminal is configured to receive a reflected power of the antenna, and the fourth terminal is configured to output a sub-reflected power proportional to the reflected power;

a determining module, connected to the third terminal and the fourth terminal, respectively, for obtaining the sub-output power and the sub-reflected power, and determining the reflection coefficient based on the sub-output power and the sub-reflected power; and

and the input end of the power control module is connected with the determining module to obtain the reflection coefficient, and the output end of the power control module is connected with the second sub-transmitter to reduce the output power of the second sub-transmitter under the working frequency band based on the result that the reflection coefficient is less than or equal to the reflection coefficient threshold value.

13. An electronic device, comprising:

a housing;

14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1-8.