CN118017213A - Electronic equipment and control method thereof - Google Patents

Abstract

The disclosure provides an electronic device and a control method of the electronic device, which can be applied to the technical field of antennas. The electronic device includes: a motherboard including a ground layer; an antenna disposed around the main board; the electromagnetic wave absorptivity detection branch is arranged on one side of the main board and is separated from the antenna; the electromagnetic wave absorption rate detection branch knot is connected to the first end of the adjustable switch, the second end of the adjustable switch can be switched between the first ends of the isolation channels, the second ends of the isolation channels are connected with the grounding layer of the main board, and the isolation channels have different isolation characteristics.

Description

Electronic equipment and control method thereof

Technical Field

The disclosure relates to the technical field of antennas, and in particular relates to an electronic device and a control method of the electronic device.

Background

In the related art, functions of electronic devices are becoming more and more abundant. For example, the electronic device may implement various functions through cellular communication technology, UWB (Ultra Wide Band) technology, and multiple MIMO (Multiple In Multiple Out, multiple input multiple output) antenna technology, etc. The electronic device may also be provided with an electromagnetic absorption rate (SAR, specific Absorption Rate) detection branch. The SAR detection stub may be used to detect the electromagnetic wave absorption rate of an electromagnetic wave signal radiated by an antenna provided by the electronic device. The presence of SAR detection branches may affect the performance of the antenna of the electronic device.

Disclosure of Invention

The disclosure provides an electronic device and a control method of the electronic device.

According to one aspect of the present disclosure, there is provided an electronic device including: a motherboard including a ground layer; an antenna disposed around the main board; the electromagnetic wave absorptivity detection branch is arranged on one side of the main board and is separated from the antenna; the electromagnetic wave absorption rate detection branch knot is connected to the first end of the adjustable switch, the second end of the adjustable switch can be switched between the first ends of the isolation channels, the second ends of the isolation channels are connected with the grounding layer of the main board, and the isolation channels have different isolation characteristics.

According to an embodiment of the present disclosure, an antenna includes a first antenna branch and a second antenna branch separated from each other, and an electromagnetic wave absorption rate detection branch is located between the first antenna branch and the second antenna branch.

According to an embodiment of the disclosure, the adjustable switch is a multi-way switch, having a first end and a plurality of second ends, the first end being connected to the electromagnetic wave absorption rate detection branch, the plurality of second ends being respectively connected to the plurality of isolation paths.

According to an embodiment of the present disclosure, each isolation path includes at least one capacitor.

According to an embodiment of the present disclosure, at least one isolation path among the plurality of isolation paths further comprises at least one inductance in series with the at least one capacitance.

According to an embodiment of the present disclosure, the at least one inductance is closer to the motherboard than the at least one capacitance.

According to an embodiment of the present disclosure, the adjustable switch is a radio frequency tuning switch.

According to an embodiment of the present disclosure, the electronic device further includes: the control unit is connected to the control end of the adjustable switch, and is used for determining the isolation degree of the first antenna branch and the second antenna branch based on electromagnetic wave signals received by the first antenna branch and the second antenna branch and controlling the adjustable switch to connect one of a plurality of isolation passages to the electromagnetic wave absorptivity detection branch according to the isolation degree.

According to an embodiment of the present disclosure, the control unit is further configured to detect a capacitance between the electromagnetic wave absorption rate detection branch and the motherboard, and adjust a radiation power of the antenna according to the detected capacitance change.

According to embodiments of the present disclosure, the tunable switch and antenna are implemented as part of a metal bezel surrounding the motherboard.

According to another aspect of the present disclosure, there is provided a control method of an electronic device as above, including:

determining an isolation of the first antenna branch and the second antenna branch based on electromagnetic wave signals received by the first antenna branch and the second antenna branch; and

An adjustable switch is controlled according to the isolation to connect one of the plurality of isolation paths to the electromagnetic wave absorption rate detection branch.

According to an embodiment of the present disclosure, the method further comprises: and detecting the capacitance between the electromagnetic wave absorptivity detection branch of the electronic equipment and the main board of the electronic equipment, and adjusting the radiation power of the antenna according to the detected capacitance change.

Drawings

The foregoing and other objects, features and advantages of the disclosure will be more apparent from the following description of embodiments of the disclosure with reference to the accompanying drawings, in which:

Fig. 1 schematically illustrates a structural schematic diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 2 schematically illustrates a schematic diagram of an isolation path, an adjustable switch, and an electromagnetic wave absorption rate detection branch, according to an embodiment of the present disclosure;

FIG. 3 schematically illustrates a schematic diagram of an adjustable switch according to an embodiment of the present disclosure;

FIG. 4A schematically illustrates a schematic diagram of an isolation via according to an embodiment of the disclosure;

FIG. 4B schematically illustrates a schematic diagram of an isolation via according to another embodiment of the present disclosure;

FIG. 4C schematically illustrates a schematic diagram of an isolation via according to another embodiment of the present disclosure;

FIG. 4D schematically illustrates a schematic diagram of an isolation via according to another embodiment of the present disclosure;

FIG. 5A schematically illustrates a schematic diagram of an electronic device according to another embodiment of the present disclosure;

FIG. 5B schematically illustrates a schematic diagram of an electronic device according to another embodiment of the present disclosure;

FIG. 6 schematically illustrates a schematic diagram of an electronic device according to another embodiment of the disclosure; and

Fig. 7 schematically shows a flowchart of a control method of an electronic device according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is only exemplary and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and/or the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be construed to have meanings consistent with the context of the present specification and should not be construed in an idealized or overly formal manner.

Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a convention should be interpreted in accordance with the meaning of one of skill in the art having generally understood the convention (e.g., "a system having at least one of A, B and C" would include, but not be limited to, systems having a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).

In the technical scheme of the invention, the related user information (including but not limited to user personal information, user image information, user equipment information, such as position information and the like) and data (including but not limited to data for analysis, stored data, displayed data and the like) are information and data authorized by a user or fully authorized by all parties, and the processing of the related data such as collection, storage, use, processing, transmission, provision, disclosure, application and the like are all conducted according to the related laws and regulations and standards of related countries and regions, necessary security measures are adopted, no prejudice to the public welfare is provided, and corresponding operation inlets are provided for the user to select authorization or rejection.

The electromagnetic wave absorptivity may be an electromagnetic wave energy absorption ratio of an electronic device such as a mobile phone, which is defined as: under the influence of the external electromagnetic field, an induced electromagnetic field will be generated in a living body such as a human body. Since various organs of the human body are consumable media, in vivo electromagnetic fields will generate current, resulting in absorption and dissipation of electromagnetic energy.

In order to reduce electromagnetic radiation of the electronic equipment, SAR detection branches can be added into the electronic equipment, and the contact state of a user and the electronic equipment can be judged by detecting the capacitance between the SAR detection branches and the main board. Taking a mobile phone as an example, if the user's head or body is detected to be close to the mobile phone (such as making a call against an ear or directly putting the mobile phone on a leg, etc.), the capacitance value is detected to change, and the user is judged to be close to the mobile phone, the maximum transmitting power of the mobile phone antenna is reduced, the radiation quantity of the mobile phone is controlled within a safe range, and the safety of the user is ensured. Since the determination is to be made by detecting the amount of change in capacitance between the SAR detection branch and the motherboard, the SAR detection branch floats, i.e., is not directly conducted with the cell phone floor. The design of the suspended branch SAR detection branch has the potential to influence the radiation current of the antenna branches located near the SAR detection branch, for example, the radiation current between the antenna branches is conducted with each other, resulting in poor isolation between antennas and deteriorated antenna performance.

The embodiment of the disclosure provides an electronic device, which comprises a main board, wherein the main board comprises a grounding layer. And the antenna is arranged around the main board. Electromagnetic wave absorptivity detects branch knot, sets up in mainboard one side, and is separated with the antenna. The electromagnetic wave absorption rate detection branch knot is connected to the first end of the adjustable switch, the second end of the adjustable switch can be switched between the first ends of the isolation channels, the second ends of the isolation channels are connected with the grounding layer of the main board, and the isolation channels have different isolation characteristics.

Fig. 1 schematically illustrates a structural schematic diagram of an electronic device according to an embodiment of the present disclosure.

As shown in fig. 1, an electronic device 100 of the present disclosure includes: the main board 110, the antenna 120, the electromagnetic wave absorption detection branch 130, the adjustable switch 140, and a plurality of isolation paths 150_1, 150_2 (hereinafter collectively referred to as isolation paths 150). Although two isolation paths 150_1 and 150_2 are illustrated in fig. 1, the number of isolation paths in the drawings of the present disclosure is not limited thereto, and any number of isolation paths may be provided as needed.

Motherboard 110 may include a ground plane, where the ground plane is represented by the same box as motherboard 110 in the figures. The ground layer of the motherboard 110 may be connected to the antenna 120 through the ground component 111. The antenna 120 is disposed around the main board 110. The electromagnetic wave absorptivity detection stub 130 is disposed at one side of the main board 110 and is separated from the antenna 120. The first end of the adjustable switch 140 is connected to the electromagnetic wave absorption rate detection branch 130, and the second end of the adjustable switch 140 can be switched between the first ends of the plurality of isolation paths 150, and the second ends of the plurality of isolation paths 150 are connected to the ground layer of the main board 110.

According to an embodiment of the present disclosure, the electronic device 100 may be a device having a communication function. For example, the electronic device 100 may be a mobile communication device. For example, the electronic device 100 may include a terminal device such as a mobile phone. Motherboard 110 of electronic device 100 may include various circuitry for implementing the functions of electronic device 100, including, but not limited to, a host processor, memory, and the like. Motherboard 110 of electronic device 100 may also include circuit modules for implementing communication functions, such as, but not limited to, communication modules. In some embodiments, motherboard 110 may also include circuit modules, such as, but not limited to, a control unit or the like, for implementing SAR detection.

The ground layer of the motherboard 110 may provide a reference voltage for the motherboard 110.

The antenna 120 may have a plurality of antenna branches for transmitting or receiving electromagnetic wave signals, and the electromagnetic wave absorption rate detection branch 130 may be disposed between adjacent antenna branches. According to an embodiment of the present disclosure, the antenna 120 includes a first antenna branch 120_1 and a second antenna branch 120_2 separated from each other, and the electromagnetic wave absorption rate detection branch 130 is located between the first antenna branch 120_1 and the second antenna branch 120_2.

The adjustable switch 140 may be a switching device having a controllable on-off function. For example, the adjustable switch 140 may be a radio frequency tuning switch. For example, the adjustable switch 140 may be controlled to select one or more isolation paths from the plurality of isolation paths 150 to connect to the electromagnetic wave absorption detection branch 130. For example, the second end of the adjustable switch 140 can be switched between the first ends of the plurality of isolation vias 150, and the second ends of the plurality of isolation vias 150 are connected to the ground plane of the motherboard 110. Thus, at least one of the plurality of isolation paths 150 may be selected to connect to the electromagnetic wave absorption detection branch 130 through the second end of the adjustable switch 140 to achieve switching of the isolation paths 150 having different isolation characteristics.

According to an embodiment of the present disclosure, the electromagnetic wave absorptivity detection stub 130 is disposed at one side of the main board 110 and separated from the antenna 120. Compared with the traditional mode that the electromagnetic wave absorptivity detection branch is arranged on the plastic support at the back of the electronic device 100, the electromagnetic wave absorptivity detection branch 130 and the antenna 120 can be realized in the frame of the electronic device, so that the detection range of the electromagnetic wave absorptivity detection branch 130 can be enlarged, and the accuracy of detecting the electromagnetic wave absorptivity is improved.

And, since the electromagnetic wave absorptivity detection branch 130, the adjustable switch 140 and the plurality of isolation paths 150 are connected, an LC circuit can be formed with the electromagnetic wave absorptivity detection branch 130 by selecting an appropriate isolation path 150 through the adjustable switch 140, and the formed LC path can block the coupling between currents generated by electromagnetic wave signals radiated from the antenna branches at both sides of the electromagnetic wave absorptivity detection branch 130, thereby improving the isolation between the antenna branches of the antenna 120. For example, the formed LC path may feed a current generated due to an electromagnetic wave signal radiated from an antenna branch of the antenna 120_1 to the ground, and the current may be prevented from affecting the performance of the antenna 120_2. And vice versa.

Based on this, since switching is performed between the first ends of the plurality of isolation paths 150 by causing the second ends of the adjustable switches 140, switching of the isolation paths 150 having different isolation characteristics can be achieved, so that the isolation between the antenna branches of the antenna 120 can be adjusted. Based on this, flexibility in adjusting the isolation between antenna branches of the antenna 120 is improved.

According to an embodiment of the present disclosure, the plurality of isolation vias 1501, 1502 have different isolation characteristics. For example, the isolation vias 150_1, 150_2 may each include one or more electronic devices of a type such as, but not limited to, capacitance or inductance. The isolation via may be provided with corresponding isolation characteristics by setting parameters of the electronics in the isolation via. For example, the isolation path 150_1 and the isolation path 150_2 may include a capacitance, and by reasonably setting the capacitance size, it is possible to ensure that the electromagnetic wave absorption rate detection flow is not affected while providing isolation characteristics for the isolation path 150_1 and the isolation path 150_2. It is understood that the capacitances in the isolation path 150_1 and the isolation path 150_2 may have different magnitudes to achieve different isolation characteristics without affecting the electromagnetic wave absorption rate detection process.

In addition to the capacitance, an inductance may be included in the isolation path 150_1 and the isolation path 150_2, the capacitance and the inductance being connected in series. In some embodiments, the inductance may be closer to the motherboard than the capacitance. In some embodiments, isolation path 150_1 may be made to include a capacitance, and isolation path 150_2 includes a capacitance and an inductance in series with the capacitance, where the inductance is closer to the motherboard than the capacitance. In other embodiments, isolation path 150_1 and isolation path 150_2 may each include a combination of at least one capacitance and at least one inductance.

The individual devices in the isolation path may be connected in different ways as desired, such as but not limited to parallel, series, or a combination of series and parallel, to achieve different isolation characteristics. The electromagnetic wave absorption detection branch 130 may exhibit inductive or capacitive properties in different frequency bands. Taking the simplest case as an example, assuming that the electromagnetic wave absorption detection branch 130 is equivalent to an inductance, the isolation path 150_1 and the isolation path 150_2 each include a capacitance, and when the capacitance in the isolation path 150_1 and the isolation path may form an LC circuit with the electromagnetic wave absorption detection branch 130. The LC circuit formed by the electromagnetic wave absorption detection branches 130 and the different isolation channels 150 can present different LC isolation characteristics, and the isolation channels 150 with the required isolation characteristics are selected from the isolation channels 150 with the different isolation characteristics by using the adjustable switch 140 to be connected with the electromagnetic wave absorption detection branches 130, so that the LC circuit with the required LC isolation characteristics can be obtained, thereby effectively blocking the current between the antenna branches of the antennas 120 at both sides of the electromagnetic wave absorption detection branches 130, improving the isolation between the antenna branches 120 of the antennas 120, and alleviating the influence of the electromagnetic wave absorption detection branches 130 on the signals of the antenna branches of the antennas 120.

According to the embodiment of the disclosure, the adjustable switch and the plurality of isolation passages with different isolation characteristics are arranged between the electromagnetic wave absorptivity detection branch and the main board, and the adjustable switch can be utilized to select a required isolation passage from the plurality of isolation passages to be connected with the electromagnetic wave absorptivity detection branch, so that an LC circuit with the required isolation characteristics is obtained, and therefore currents between antenna branches on two sides are effectively blocked, isolation between the antenna branches is improved, and performance of the antenna is optimized.

Fig. 2 schematically illustrates a schematic diagram of an isolation path, an adjustable switch, and an electromagnetic wave absorption rate detection branch according to an embodiment of the present disclosure.

As shown in fig. 2, the adjustable switch 140 is a multi-way switch, and has a first terminal OUT and a plurality of second terminals I1 and I2 (a lower Wen Tongchen second terminal I). The first terminal OUT is connected to the electromagnetic wave absorption rate detection branch 130, and the plurality of second terminals I1 and I2 are connected to the plurality of isolation paths 150_1 and 150_2, respectively. It should be noted that in some embodiments, the electromagnetic wave absorption rate detection stub 130 is made of a conductive material, and may exhibit inductive or capacitive properties at different frequencies. To more intuitively illustrate the present disclosure, the electromagnetic wave absorption rate detection stub 130 is equivalent to an inductance to be schematically illustrated.

According to embodiments of the present disclosure, there may be a one-to-one correspondence between the plurality of second ends I and the plurality of isolation vias 150. For example, the plurality of isolation vias may include isolation via 1501_1 and isolation via 1502_2. For example, the second terminal I1 may be connected to the isolation path 1501_1, and the second terminal I2 may be connected to the isolation path 1501_2.

According to an embodiment of the present disclosure, the adjustment switch 140 includes, but is not limited to, a multiplexer. The regulating switch 140 may select one or more second terminals I from among the plurality of second terminals I to be connected to the first terminal OUT in response to the received control signal S, thereby connecting one or more isolation paths of the plurality of isolation paths 150 to the magnetic wave absorption detection branch 130. For example, the adjustable switch 140 may be controlled to connect at least one isolation path 150 of the plurality of isolation paths 150 to the electromagnetic wave absorption rate detection branch 130 by transmitting the control signal S to the adjustable switch 140, so that the connected isolation path 150 and the electromagnetic wave absorption rate detection branch 130 constitute an LC circuit, which serves to improve isolation between antenna branches.

For example, when the control signal S is 0, the adjustable switch 140 connects the second terminal I1 to the first terminal OUT, thereby connecting the isolation path 1501_1 connected to the second terminal I1 to the electromagnetic wave absorption rate detection branch 130, so that the isolation path 1501_1 and the electromagnetic wave absorption rate detection branch 130 constitute a first LC circuit. When the control signal S is 1, the adjustable switch 140 connects the second terminal I2 to the first terminal OUT, thereby connecting the isolation path 1501_2 connected to the second terminal I2 to the electromagnetic wave absorption rate detection branch 130, so that the isolation path 1501_2 and the electromagnetic wave absorption rate detection branch 130 constitute a second LC circuit. Since the isolation path 1501_1 has different isolation characteristics from the isolation path 1502_2, the first LC circuit and the second LC circuit composed of the electromagnetic wave absorption rate detection branch 130 have different LC isolation characteristics, respectively. The LC circuit with the required isolation characteristic can be obtained by selecting the required isolation passage to be connected with the electromagnetic wave absorptivity detection branch, so that the current between the antenna branches at two sides is effectively blocked, the isolation between the antenna branches is improved, and the performance of the antenna is optimized.

The connection and control relationship between the regulating switch and the isolation path are schematically illustrated in the above embodiments by taking an alternative example. However, embodiments of the present disclosure are not limited thereto, and in some embodiments, a desired number of isolation paths may be provided as desired and the appropriate adjustable switches 140 may be provided accordingly.

Fig. 3 schematically illustrates a schematic diagram of another example of an adjustable switch according to an embodiment of the present disclosure.

As shown in fig. 3, in this embodiment, the adjustable switch 140 may include a first terminal OUT, a second terminal I1, a second terminal I2, a second terminal I3, and a second terminal I4 (lower Wen Tongchen second terminal I). The adjustable switch 140 may be switched between the second terminal I1, the second terminal I2, the second terminal I3 and the second terminal I4 under the control of the control signal S1 and the control signal S2 (hereinafter collectively referred to as control signal S).

For example, in the case where the control signal S1 is 0 and the control signal S2 is 0, the adjustable switch 140 connects the second terminal I1 to the first terminal OUT, thereby connecting the isolation path connected to the second terminal I1 to the electromagnetic wave absorption rate detection branch. In the case where the control signal S1 is 0 and the control signal S2 is 1, the adjustable switch 140 connects the second terminal I2 to the first terminal OUT, thereby connecting the isolation path connected to the second terminal I2 to the electromagnetic wave absorption rate detection branch. In the case where the control signal S1 is 1 and the control signal S2 is 0, the adjustable switch 140 connects the second terminal I3 to the first terminal OUT, thereby connecting the isolation path connected to the second terminal I3 to the electromagnetic wave absorption rate detection branch. In the case where the control signal S1 is 1 and the control signal S2 is 1, the adjustable switch 140 connects the second terminal I4 to the first terminal OUT, thereby connecting the isolation path connected to the second terminal I4 to the electromagnetic wave absorption rate detection branch. In this way, the adjustable switch 140 can select a desired isolation path from the four isolation paths to be connected to the electromagnetic wave absorption rate detection branch under the control of the control signals S1 and S2, thereby obtaining an LC circuit having a desired LC isolation characteristic.

According to the embodiment of the disclosure, any number of isolation paths can be set and the adjustable switch with corresponding input and output can be selected according to the requirement, so that the flexibility of switching the isolation paths 150 is improved.

For a better understanding of embodiments of the present disclosure, the following is set forth in connection with fig. 4A-4D.

According to embodiments of the present disclosure, each isolation via 150 may include at least one capacitance.

In some embodiments, at least one isolation via 150 of the plurality of isolation vias 150 may include at least one capacitance. For example, the isolation circuit may include a single capacitor C (as shown in FIG. 4A) or may include multiple capacitors C1 and C2 (as shown in FIG. 4C).

In other embodiments, at least another isolation via 150 of the plurality of isolation vias 150 may further comprise at least one inductance in series with at least one capacitance. Wherein the at least one inductance is closer to the motherboard than the at least one capacitance. For example, as shown in fig. 4B, the isolation circuit includes a combination of a capacitance C and an inductance L, where the inductance L is closer to the motherboard 110 than the capacitance C. However, embodiments of the present disclosure are not limited thereto, and the number of capacitors and/or inductors in the isolation circuit and the connection manner thereof may be set as needed. For example, in the case where a plurality of capacitors (e.g., capacitors C1 and C2) are included in the single isolation path 150, the plurality of capacitors Cl and C2 may be connected in series (as shown in fig. 4C) or may be connected in parallel (as shown in fig. 4D), but a combination of series and parallel may be adopted in the case where the number of capacitors is greater than 3. Also, in the case where at least one capacitor and at least one inductor are included in the single isolation path 150, the inductors and capacitors may be connected in any desired manner as needed, and will not be described again. In order to focus on the drawings, some of the embodiments described above are not schematically illustrated in fig. 4A to 4D, and the embodiments of the present disclosure are described in the specification.

The circuit configuration of each isolation circuit may be the same or different. For example, one or more of the plurality of isolation circuits may take the configuration shown in fig. 4A. The isolation circuits may all have the same structure, for example, the circuit structure shown in fig. 4B. The proper structure and parameters of devices in the circuit can be selected for each isolation circuit according to the requirement, so that each isolation circuit has different isolation characteristics. For example, assuming that the isolation circuit 1501 includes the capacitor C1 and the isolation circuit 1502 includes the capacitor C2, the capacitors C1 and C2 may be set to have different capacitance values, so that LC circuits having different LC isolation characteristics can be formed when the isolation circuits 150_1 and 150_2 are connected to the electromagnetic wave absorption rate detection branch, respectively.

According to an embodiment of the present disclosure, the adjustable switch 140 is a radio frequency tuning switch.

Fig. 5A schematically illustrates a schematic diagram of an electronic device according to another embodiment of the disclosure.

According to an embodiment of the present disclosure, the electronic device 100 may further include a control unit 160. The control unit 160 is connected to the control terminal of the adjustable switch 140 and the first antenna branch 120_1 and the second antenna branch 120_2 of the antenna 120. The control unit 160 is configured to receive electromagnetic wave signals from the first antenna branch 120_1 and the second antenna branch 120_2 of the antenna 120, determine the isolation degree of the first antenna branch 120_1 and the second antenna branch 120_2 based on the received electromagnetic wave signals, and apply a control signal S to a control terminal of the adjustable switch 140 to control the adjustable switch 140 to connect one of the plurality of isolation paths 150 to the electromagnetic wave absorption rate detection branch 130 in response to the isolation degree not meeting a preset requirement. In some embodiments, the signals received by the first antenna branch 120_1 and the second antenna branch 120_2 may be sent to the control unit 160 after a series of front-end processing, including but not limited to amplifying, filtering, shaping, and the like, which are not described herein. After receiving the antenna signal subjected to the front-end processing, the control unit 160 may determine the isolation between the first antenna branch 120_1 and the second antenna branch 120_2 based on the received antenna signal.

According to an embodiment of the present disclosure, the control terminal of the adjustable switch 140 may receive a control signal as described above, such as the control signal S described above, or the control signals S1 and S2, from the control unit 160 in order to connect one or more of the plurality of isolation paths 150 to the electromagnetic wave absorption rate detection branch 130 under the control of the control signal.

According to embodiments of the present disclosure, the degree of isolation between the first antenna branch 120_1 and the second antenna branch 120_2 may be determined in various ways as desired. For example, a difference between each of the electromagnetic wave signal of the first antenna branch 120_1 and the electromagnetic wave signal of the second antenna branch 120_2 and the reference signal may be calculated, and then the isolation between the first antenna branch 120_1 and the second antenna branch 120_2 may be determined according to the two difference values. For example, the control unit 160 may use the transmission and reception performance indexes of the first antenna branch 120_1 and the second antenna branch 120_2 as the determination criteria of the isolation degree, where the poor performance index means that the isolation degree is low, and vice versa. These performance metrics include, but are not limited to, received signal strength, transmit power, and received throughput of the antenna stub. Whether the performance index meets the requirements can be judged by comparing each performance index with a corresponding reference standard. For example, assuming that the first antenna branch 120_1 and the second antenna branch 120_2 operate in the same frequency band, if the received signal strength of one of the first antenna branch 120_1 and the second antenna branch 120_2 is lower than a preset threshold, it means that the antenna branch is affected by the current of the other antenna branch to cause poor performance index, that is, it can be determined that the isolation between the two antenna branches does not meet the preset requirement. On the contrary, if the received signal strengths of the first antenna branch 120_1 and the second antenna branch 120_2 reach the preset requirement, it means that the two antenna branches do not affect each other, that is, it can be determined that the isolation between the two antenna branches meets the preset requirement. Although the description is made by taking the performance index of the received signal strength in the same frequency band as an example, the embodiments of the disclosure are not limited thereto, and whether the isolation between the antenna branches meets the preset requirement may be determined according to other performance indexes or according to multiple performance indexes, which is not repeated here.

According to the embodiment of the disclosure, when judging whether the isolation meets the preset requirement, different isolation judging standards can be adopted. For example, the isolation threshold may be preset. In the case that the isolation is less than the preset isolation threshold, the control unit 160 may determine that the isolation does not meet the preset requirement; in the case where the isolation is equal to or greater than the preset isolation threshold, the control unit 160 may determine that the isolation meets the preset requirement.

According to an embodiment of the present disclosure, the control unit 160 is further configured to: after controlling the adjustable switch 140 to connect one of the plurality of isolation paths 150 to the electromagnetic wave absorption rate detection branch 130, electromagnetic wave signals are received again from the first antenna branch 120_1 and the second antenna branch 120_2 of the antenna 120, the isolation degree of the first antenna branch 120_1 and the second antenna branch 120_2 is determined based on the received electromagnetic wave signals, and in response to the isolation degree not meeting a preset requirement, the adjustable switch 140 is controlled to connect the other of the plurality of isolation paths 150 to the electromagnetic wave absorption rate detection branch 130.

For example, as shown in fig. 5A, the control unit 160 applies the control signal S to the control terminal of the adjustable switch 140 to control the adjustable switch 140 to connect the isolation path 150_1 of the plurality of isolation paths 150 to the electromagnetic wave absorption rate detection branch 130 in response to the isolation degree of the first antenna branch 120_1 and the second antenna branch 120_2 not meeting the preset requirement, so as to adjust the isolation degree between the first antenna branch 120_1 and the second antenna branch 120_2 by using the band-stop characteristic of the LC circuit constituted by the isolation path 150_1 and the electromagnetic wave absorption rate detection branch 130. Thereafter, the control unit 160 may again receive electromagnetic wave signals from the first antenna branch 120_1 and the second antenna branch 120_2 of the antenna 120, and determine the direct isolation of the first antenna branch 120_1 and the second antenna based on the received electromagnetic wave signals. In the case that the isolation degree does not meet the preset requirement, the control unit 160 may control the adjustable switch 140 to connect the isolation path 150_2 to the electromagnetic wave absorption rate detection branch 130, so as to adjust the isolation degree between the first antenna branch 120_1 and the second antenna branch 120_2 by using the band-stop characteristic of the LC circuit formed by the isolation path 150_2 and the electromagnetic wave absorption rate detection branch 130.

According to an embodiment of the present disclosure, the control unit 160 is further configured to: in response to the isolation meeting the preset requirement, the state of the adjustable switch 140 is locked in the current state. In this way, the control unit may control the adjustable switch 140 to maintain the connection relationship between the electromagnetic wave absorption rate detection branch and the currently connected isolation circuit, i.e. not switch to other isolation circuits, when the isolation degree meets the preset requirement.

According to an embodiment of the present disclosure, the control unit 160 is further configured to detect a capacitance between the electromagnetic wave absorption rate detection branch 130 and the main board 110, and adjust the radiation power of the antenna 120 according to the detected capacitance change. The detection capacitance can reflect a distance between a user using the electronic device 100 and the electronic device 100. For example, in a case where the head or body of the user is close to the electronic device 100, the capacitance value of the detection capacitance in the electromagnetic wave absorption rate detection branch 130 may change. Thus, in the case where the change in the capacitance value of the detection capacitance in the electromagnetic wave absorption rate detection branch 130 reaches the preset threshold, the electronic device 100 may determine that the distance between the user and the electronic device 100 reaches a certain extent, so that the influence of the radiation of the electronic device 100 may be received. The electromagnetic wave absorption rate detection branch 130 detects that the head or body of the user is close to the electronic device 100, and may include a case where the user makes a call against the ear or a case where the user places a leg of a mobile phone to surf the internet, without being limited thereto. Under the condition that the user approaches, the radiation power of the antenna 120 can be reduced, so that the radiation quantity of electromagnetic wave signals of the antenna 120 can be controlled within a safe range, the influence of radiation on the user is reduced, and the safety of the user is ensured.

According to an embodiment of the present disclosure, the control unit 160 may control the radiation intensities of the electromagnetic wave signals of the first antenna branch 120_1 and the second antenna branch 120_2. In fig. 5A and 5B, for convenience of illustration, the connection line between the control unit and the adjustable switch is not shown, but does not represent that the above-mentioned line does not exist in the electronic device 500.

According to an embodiment of the present disclosure, the control unit 160 may be integrated into the main board 110 or independent of the main board 110. In the example of fig. 5A, the control unit 160 is integrated into the motherboard 110. In the example of fig. 5B, the control unit 160 is a circuit module that is independent of the motherboard 110 and is not integrated into the circuitry of the motherboard 110.

According to embodiments of the present disclosure, the adjustable switch 140 and antenna 120 may be implemented as part of a metal bezel surrounding the motherboard 110.

Fig. 6 schematically illustrates a schematic diagram of an electronic device according to another embodiment of the disclosure.

As shown in fig. 6, the antenna 120 of the electronic device 600 may include other antenna branches in addition to the first antenna branch 120_1 and the first antenna branch 120_2. Other antenna branches may include, but are not limited to, third antenna branch 120_3, fourth antenna branch 120_4, fifth antenna branch 120_5, sixth antenna branch 120_6, and so forth. Wherein, the functions implemented by the third antenna branch 120_3, the fourth antenna branch 120_4, the fifth antenna branch 120_5 and the sixth antenna branch 120_6 may be the same or different. Likewise, the functions performed by the third antenna branch 120_3, the fourth antenna branch 120_4, the fifth antenna branch 120_5, and the sixth antenna branch 120_6 may be the same as or different from the functions performed by the first antenna branch 120_1 and the first antenna branch 120_2.

In some embodiments, the electronic device 600 may also include the battery 160 and the interface 170. The battery 160 may be used to power the electronic device 600. For example, interface 170 may be used for data transfer with electronic device 600 and other devices, including but not limited to a USB interface. Embodiments of the present disclosure are not limited thereto, and the electronic device may further include other structures, which are not described herein.

Fig. 7 schematically shows a flowchart of a control method of an electronic device according to an embodiment of the present disclosure.

As shown in fig. 7, the control method of the electronic device of this embodiment includes operations S710 to S730.

In operation S710, an isolation degree of the first antenna branch and the second antenna branch is determined based on electromagnetic wave signals received by the first antenna branch and the second antenna branch.

In operation S720, an adjustable switch is controlled to connect one of a plurality of isolation paths to an electromagnetic wave absorption rate detection branch according to the isolation.

According to the embodiment of the disclosure, since the electromagnetic wave absorption rate detection branch, the adjustable switch and the plurality of isolation passages are connected, the currents generated due to electromagnetic wave signals radiated by the first antenna branch and the second antenna branch can be blocked from each other through the electromagnetic wave absorption rate detection branch, the adjustable switch and the plurality of isolation passages, so that the influence of the currents on the performance of the antenna is avoided, and the isolation between the antenna branches is improved.

Based on this, since switching is performed between the first ends of the plurality of isolation paths by causing the second ends of the adjustable switches, switching of isolation paths having different isolation characteristics can be achieved, and thus isolation between antennas can be adjusted. Based on this, flexibility in adjusting the isolation between antennas is improved.

According to an embodiment of the present disclosure, the method for controlling an electronic device further includes: after controlling the adjustable switch to connect one of the plurality of isolation paths to the electromagnetic wave absorption rate detection branch 130, receiving electromagnetic wave signals again from the first antenna branch and the second antenna branch of the antenna, determining the isolation degree of the first antenna branch and the second antenna branch based on the received electromagnetic wave signals, and controlling the adjustable switch to connect the other of the plurality of isolation paths to the electromagnetic wave absorption rate detection branch in response to the isolation degree not meeting a preset requirement.

According to an embodiment of the present disclosure, the method for controlling an electronic device further includes: and locking the state of the adjustable switch in the current state in response to the isolation degree meeting the preset requirement.

According to an embodiment of the present disclosure, the method for controlling an electronic device further includes: and detecting the capacitance between the electromagnetic wave absorptivity detection branch of the electronic equipment and the main board of the electronic equipment, and adjusting the radiation power of the antenna according to the detected capacitance change.

It should be noted that, unless there is an execution sequence between different operations or an execution sequence between different operations in technical implementation, the execution sequence between multiple operations may be different, and multiple operations may also be executed simultaneously in the embodiment of the disclosure.

Those skilled in the art will appreciate that the features recited in the various embodiments of the disclosure and/or in the claims may be provided in a variety of combinations and/or combinations, even if such combinations or combinations are not explicitly recited in the disclosure. In particular, the features recited in the various embodiments of the present disclosure and/or the claims may be variously combined and/or combined without departing from the spirit and teachings of the present disclosure. All such combinations and/or combinations fall within the scope of the present disclosure.

The embodiments of the present disclosure are described above. These examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the embodiments cannot be used advantageously in combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be made by those skilled in the art without departing from the scope of the disclosure, and such alternatives and modifications are intended to fall within the scope of the disclosure.

Claims (11)

1. An electronic device, comprising:

a motherboard, the motherboard including a ground layer;

an antenna disposed around the main board;

an electromagnetic wave absorptivity detection branch knot is arranged on one side of the main board and is separated from the antenna;

The electromagnetic wave absorption rate detection branch knot is connected to the first end of the adjustable switch, the second end of the adjustable switch can be switched between the first ends of the isolation paths, the second ends of the isolation paths are connected with the grounding layer of the main board, and the isolation paths have different isolation characteristics.

2. The electronic device of claim 1, wherein the antenna comprises a first antenna branch and a second antenna branch that are separate from each other, the electromagnetic wave absorption rate detection branch being located between the first antenna branch and the second antenna branch.

3. The electronic device of claim 2, wherein,

The adjustable switch is a multi-way switch and is provided with a first end and a plurality of second ends, wherein the first end is connected with the electromagnetic wave absorptivity detection branch knot, and the plurality of second ends are respectively connected with the plurality of isolation passages.

4. The electronic device of claim 3, wherein each of the isolation vias comprises at least one capacitance.

5. The electronic device of claim 4, wherein at least one isolation path of the plurality of isolation paths further comprises at least one inductance in series with the at least one capacitance.

6. The electronic device of any of claims 1-5, wherein the adjustable switch is a radio frequency tuning switch.

7. The electronic device of any of claims 1-6, further comprising: and the control unit is connected to the control end of the adjustable switch, and is used for determining the isolation degree of the first antenna branch and the second antenna branch based on electromagnetic wave signals received by the first antenna branch and the second antenna branch and controlling the adjustable switch to connect one of the isolation passages to the electromagnetic wave absorptivity detection branch according to the isolation degree.

8. The electronic device of claim 7, wherein the control unit is further configured to detect a capacitance between the electromagnetic wave absorption rate detection branch and the motherboard, and adjust a radiation power of the antenna according to the detected capacitance change.

9. The electronic device of any of claims 1-8, wherein the adjustable switch and the antenna are implemented as part of a metal bezel surrounding the motherboard.

10. A control method of the electronic apparatus according to any one of claims 1 to 9, comprising:

determining an isolation of the first antenna branch and the second antenna branch based on electromagnetic wave signals received by the first antenna branch and the second antenna branch; and

And controlling the adjustable switch to connect one of the isolation paths to the electromagnetic wave absorptivity detection branch according to the isolation degree.

11. The method of claim 10, further comprising: and detecting the capacitance between the electromagnetic wave absorptivity detection branch of the electronic equipment and the main board of the electronic equipment, and adjusting the radiation power of the antenna according to the detected capacitance change.