Mobile terminal, antenna performance adjustment method and apparatus

Abstract

The embodiment of the present application relates to the technical field of communication, and particularly relates to a mobile terminal, an antenna performance adjusting method and device. The mobile terminal comprises: a first screen unit and a second screen unit, the first screen unit and the second screen unit are connected and can be folded; a folding angle detection unit, the folding angle detection unit is used for detecting the folding angle of the first screen unit and the second screen unit; a ground length adjusting unit, the ground length adjusting unit is used for adjusting the electrical length of an antenna ground; and a control unit, the control unit is electrically connected with the folding angle detection unit and the ground length adjusting unit, and is used for controlling the ground length adjusting unit to adjust the electrical length of the antenna ground to 1 / 4 of the working wavelength of the antenna according to the working wavelength of the antenna and the folding angle detected by the folding angle detection unit. The technical scheme of the present application can ensure that the antenna performance of the mobile terminal in different folding states can reach the optimal state.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a mobile terminal, an antenna performance adjustment method, and an apparatus. Background Technology

[0002] Currently, some foldable mobile devices, such as smartphones, have achieved miniaturization, but this has also presented challenges to the antenna design. The antenna performance of a foldable mobile device varies significantly depending on its folded state.

[0003] When the antenna of a mobile terminal, such as a mobile phone, is working, the ground plane participates in the radiation as part of the antenna radiation. The electrical length of the ground plane differs between the open and closed states of a foldable mobile terminal. Due to the influence of the ground plane's electrical length, the antenna performance of the same antenna varies. Ensuring that the antenna performance of a foldable mobile terminal reaches its optimal state in different folding positions is a current challenge in antenna design. Summary of the Invention

[0004] Based on this, it is necessary to address the above-mentioned technical problems by providing a mobile terminal, an antenna performance adjustment method, and an apparatus that can ensure that the antenna performance of the mobile terminal can reach the optimal state in different folded states.

[0005] In a first aspect, this application provides a mobile terminal, comprising:

[0006] A first screen unit and a second screen unit, wherein the first screen unit and the second screen unit are connected and can be folded in half;

[0007] A folding angle detection unit is used to detect the folding angle of the first screen unit and the second screen unit;

[0008] A ground length adjustment unit, wherein a first end of the ground length adjustment unit is electrically connected to the first antenna ground of the first screen unit, and a second end is electrically connected to the second antenna ground of the second screen unit, wherein the first antenna ground and the second antenna ground constitute the antenna ground of the mobile terminal, and the ground length adjustment unit is used to adjust the electrical length of the antenna ground;

[0009] The control unit is electrically connected to the folding angle detection unit and the ground length adjustment unit, and is used to control the ground length adjustment unit to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal according to the operating wavelength of the antenna and the folding angle detected by the folding angle detection unit.

[0010] In some embodiments, the ground length adjustment unit includes at least one impedance adjustment circuit connected in series between the first antenna ground and the second antenna ground, the impedance adjustment circuit being used to adjust its own capacitance and / or inductance values.

[0011] In some embodiments, the impedance adjustment circuit includes a multiplexer switch and a plurality of reactive element groups. The moving terminal of the multiplexer switch is electrically connected to a first terminal of the impedance adjustment circuit. The first terminal of each reactive element group is electrically connected to the stationary terminal of the multiplexer switch. The second terminal of each reactive element group is electrically connected to a second terminal of the impedance adjustment circuit. The reactive element group includes at least one capacitive element and / or at least one inductive element, and the reactance of different reactive element groups is different.

[0012] In some embodiments, the mobile terminal further includes a metal hinge structure, through which the first screen unit and the second screen unit are connected and folded around the metal hinge structure;

[0013] The ground length adjustment unit includes a first impedance adjustment circuit and a second impedance adjustment circuit. The first impedance adjustment circuit is placed in the first screen unit, and the second impedance adjustment circuit is placed in the second screen unit. The first impedance adjustment circuit is connected in series between the first antenna ground and the metal rotating shaft structure, and the second impedance adjustment circuit is connected in series between the second antenna ground and the metal rotating shaft structure.

[0014] In some embodiments, the metal pivot structure includes a first end and a first connecting portion and a second connecting portion located at the first end and disposed opposite to each other, the first connecting portion being connected to the first screen unit, and the second impedance adjustment circuit being connected to the second connecting portion.

[0015] In some embodiments, the ground length adjustment unit further includes a third impedance adjustment circuit, and the metal shaft structure further includes a second end opposite to the first end;

[0016] The third impedance adjustment circuit is placed in the first screen unit and connected in series between the first antenna ground and the second end; or, the third impedance adjustment circuit is placed in the second screen unit and connected in series between the second antenna ground and the second end.

[0017] Secondly, this application also provides an antenna performance adjustment method, implemented based on the mobile terminal described in the first aspect, the antenna performance adjustment method comprising:

[0018] Obtain the folding angle of the mobile terminal and the operating wavelength of the antenna;

[0019] Based on the folding angle and the operating wavelength, the electrical length of the antenna ground is adjusted to 1 / 4 of the operating wavelength.

[0020] In some embodiments, adjusting the electrical length of the antenna ground to 1 / 4 of the operating wavelength according to the folding angle and the operating wavelength includes:

[0021] The impedance adjustment circuit corresponding to the folding angle and the working wavelength, as well as the corresponding capacitance value and / or corresponding inductance value of the impedance adjustment circuit, are determined from the pre-established first correspondence. The first correspondence is used to characterize the correspondence between the folding angle of the mobile terminal, the working wavelength of the antenna, and the impedance adjustment circuit and its capacitance value and / or inductance value when the electrical length of the antenna ground is equal to 1 / 4 of the working wavelength.

[0022] The capacitance and / or inductance values ​​of the impedance adjustment circuit determined from the first correspondence will be adjusted to the corresponding capacitance and / or inductance values.

[0023] In some embodiments, adjusting the electrical length of the antenna ground to 1 / 4 of the operating wavelength according to the folding angle and the operating wavelength includes:

[0024] The selection status of each multiplexer switch corresponding to the folding angle and the operating wavelength is determined from the pre-established second correspondence, wherein the second correspondence is used to characterize the correspondence between the folding angle of the mobile terminal, the operating wavelength of the antenna, and the selection status of each multiplexer switch when the electrical length of the antenna ground is equal to 1 / 4 of the operating wavelength.

[0025] Based on the selection status of each multiplexer determined from the second correspondence, each multiplexer is controlled to perform the selection operation of the corresponding path.

[0026] Thirdly, this application also provides an antenna performance adjustment device, comprising:

[0027] The acquisition module is used to acquire the folding angle of the mobile terminal and the operating wavelength of the antenna;

[0028] An adjustment module is used to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength according to the folding angle and the operating wavelength.

[0029] The mobile terminal provided in this application includes a first screen unit and a second screen unit, which are connected and foldable; a folding angle detection unit for detecting the folding angle of the first screen unit and the second screen unit; a ground length adjustment unit, the first end of which is electrically connected to the first antenna ground of the first screen unit, and the second end of which is electrically connected to the second antenna ground of the second screen unit, wherein the first antenna ground and the second antenna ground constitute the antenna ground of the mobile terminal, and the ground length adjustment unit is used to adjust the electrical length of the antenna ground; and a control unit electrically connected to the folding angle detection unit and the ground length adjustment unit, for controlling the ground length adjustment unit to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal according to the operating wavelength of the antenna and the folding angle detected by the folding angle detection unit. Therefore, a ground length adjustment unit is set between the first antenna ground and the second antenna ground. The folding angle of the mobile terminal is detected by the mobile terminal antenna operating wavelength and folding angle detection unit. The ground length adjustment unit adjusts the electrical length of the mobile terminal antenna ground to 1 / 4 of the operating wavelength of the mobile terminal antenna, so as to tune the antenna performance of the mobile terminal and ensure that the antenna performance of the mobile terminal can reach the optimal state in different folding states. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a mobile terminal provided in an embodiment of this application;

[0033] Figure 2 A schematic diagram of the structure of a ground length adjustment unit provided in the application embodiment;

[0034] Figure 3 This is a schematic diagram of the structure of another mobile terminal provided in an embodiment of this application;

[0035] Figure 4 This is a schematic diagram of another length adjustment unit provided in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the structure of another mobile terminal provided in an embodiment of this application;

[0037] Figure 6 A schematic diagram of the structure of another length adjustment unit provided in the embodiments of this application;

[0038] Figure 7 This is a schematic diagram of the structure of another mobile terminal provided in an embodiment of this application;

[0039] Figure 8 A schematic diagram of the structure of another length adjustment unit provided in the embodiments of this application.

[0040] Figure 9 A flowchart illustrating an antenna performance adjustment method provided in this application embodiment;

[0041] Figure 10 This is a schematic diagram of the structure of an antenna performance adjustment device provided in an embodiment of this application;

[0042] Figure 11 This is a schematic diagram of the internal structure of a mobile terminal provided in an embodiment of this application.

[0043] Among them, 100 is a mobile terminal; 101 is a first screen unit; 102 is a second screen unit; 103 is a folding angle detection unit; 104 is a ground length adjustment unit; 105 is a first antenna ground; 106 is a second antenna ground; 107 is a control unit; 108 is an impedance adjustment circuit; 109 is a multiplexer switch; 110 is a reactive component group; 111 is a metal shaft structure; 112 is a first end; 113 is a second end; 01 is a first impedance adjustment circuit; 02 is a second impedance adjustment circuit; 03 is a third impedance adjustment circuit; 011 is a first connection part; 012 is a second connection part; A1 is the first end of the ground length adjustment unit; A2 is the second end of the ground length adjustment unit; B1 is the first end of the impedance adjustment circuit; B2 is the second end of the impedance adjustment circuit; C1 is a moving end; C2 is a stationary end; D1 is the first end of the reactive component group; D2 is the second end of the reactive component group. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0045] The mobile terminal provided in this application embodiment has a ground length adjustment unit set between the first antenna ground and the second antenna ground. The folding angle of the mobile terminal is detected by the mobile terminal antenna operating wavelength and the folding angle detection unit. The ground length adjustment unit adjusts the electrical length of the mobile terminal antenna ground to 1 / 4 of the operating wavelength of the mobile terminal antenna to tune the antenna performance of the mobile terminal, thereby ensuring that the antenna performance of the mobile terminal can reach the optimal state in different folding states.

[0046] The mobile terminal, antenna performance adjustment method, and apparatus provided in the embodiments of this application will be described exemplarily below with reference to the accompanying drawings.

[0047] Figure 1 This is a schematic diagram of the structure of a mobile terminal provided in an embodiment of this application. Figure 1 As shown, the mobile terminal 100 includes a first screen unit 101 and a second screen unit 102, which are connected and foldable; a folding angle detection unit 103, which detects the folding angle of the first screen unit 101 and the second screen unit 102; a ground length adjustment unit 104, whose first end A1 is electrically connected to the first antenna ground 105 of the first screen unit 101, and its second end A2 is electrically connected to the second antenna ground 106 of the second screen unit 102. The first antenna ground 105 and the second antenna ground 106 constitute the antenna ground of the mobile terminal 100, and the ground length adjustment unit 104 is used to adjust the electrical length of the antenna ground; and a control unit 107, which is electrically connected to the folding angle detection unit 103 and the ground length adjustment unit 104, and is used to control the ground length adjustment unit 104 to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal 100 according to the operating wavelength of the antenna and the folding angle detected by the folding angle detection unit 103.

[0048] Specifically, the mobile terminal 100 includes a first screen unit 101 and a second screen unit 102, and both the first screen unit 101 and the second screen unit 102 are foldable. The first screen unit 101 includes a circuit board (…). Figure 1 (Not shown in the image), the first screen unit 101 includes a circuit board ( Figure 1 (Not shown in the image). When the first screen unit 101 and the second screen unit 102 are folded together, for example, the first screen unit 101 and the second screen unit 102 are folded along... Figure 1 The dashed lines shown in the diagram indicate that different folding angles can be formed between the first screen unit 101 and the second screen unit 102, which can be understood as the mobile terminal 100 presenting different folding angles.

[0049] The folding angle of the first screen unit 101 and the second screen unit 102 can be detected by the folding angle detection unit 103. The folding angle detection unit 103 transmits the detected folding angle to the control unit 107, thereby allowing the control unit 107 to obtain the folding angle of the first screen unit 101 and the second screen unit 102. After the control unit 107 obtains the folding angle of the first screen unit 101 and the second screen unit 102, the control unit 107, in conjunction with the operating wavelength of the antenna of the mobile terminal 100, controls the ground length adjustment unit 104 to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal 100, so that the antenna performance of the mobile terminal 100 reaches the optimal state, which is beneficial to improving the user experience.

[0050] It should be noted that the antenna evolved from the dipole antenna. The ground of the mobile terminal 100, such as the motherboard of a mobile phone, is used as one pole of the antenna, namely the antenna ground. The antenna radiation performance is optimal when the electrical length of the antenna ground is equal to one-quarter of the operating wavelength of the antenna of the mobile terminal 100.

[0051] The ground length adjustment unit 104 has its first terminal A1 electrically connected to the first antenna ground 105, and its second terminal A2 electrically connected to the second antenna ground 106. The first antenna ground 105 is located on the circuit board of the first screen unit 101, and the second antenna ground 106 is located on the circuit board of the second screen unit 102. Thus, by placing the ground length adjustment unit 104 between the first antenna ground 105 and the second antenna ground 106 of the mobile terminal 100, the electrical length of the antenna ground of the mobile terminal 100 is adjusted by the ground length adjustment unit 104 when the mobile terminal 100 is in different folded states. The electrical length of the antenna ground is adjusted to 1 / 4 of the operating wavelength of the antenna of the mobile terminal 100, so that the antenna performance of the mobile terminal 100 reaches its optimal state, thereby ensuring that the antenna performance of the mobile terminal 100 reaches its optimal state in different folded states. Therefore, by adjusting the circuit state of the ground length adjustment unit 104, the electrical length of the antenna ground of the mobile terminal 100 can be changed to tune the antenna to its optimal state.

[0052] The folding angle detection unit 103 can be disposed on the first screen unit 101 or the second screen unit 102. Figure 1 The folding angle detection unit 103 is exemplarily disposed on the first screen unit 101; the control unit 107 may be disposed on the first screen unit 101 or the second screen unit 102. Figure 1 The control unit 107 is exemplaryly disposed on the first screen unit 101; however, this application embodiment does not specifically limit this.

[0053] The mobile terminal provided in this application includes a first screen unit and a second screen unit, which are connected and foldable; a folding angle detection unit for detecting the folding angle of the first screen unit and the second screen unit; a ground length adjustment unit, the first end of which is electrically connected to the first antenna ground of the first screen unit, and the second end of which is electrically connected to the second antenna ground of the second screen unit, wherein the first antenna ground and the second antenna ground constitute the antenna ground of the mobile terminal, and the ground length adjustment unit is used to adjust the electrical length of the antenna ground; and a control unit electrically connected to the folding angle detection unit and the ground length adjustment unit, which controls the ground length adjustment unit to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal according to the operating wavelength of the antenna and the folding angle detected by the folding angle detection unit. Therefore, a ground length adjustment unit is set between the first antenna ground and the second antenna ground. The folding angle of the mobile terminal is detected by the mobile terminal antenna operating wavelength and folding angle detection unit. The ground length adjustment unit adjusts the electrical length of the mobile terminal antenna ground to 1 / 4 of the operating wavelength of the mobile terminal antenna to tune the antenna performance of the mobile terminal, thereby ensuring that the antenna performance of the mobile terminal can reach the optimal state in different folding states.

[0054] In some embodiments, Figure 2 This is a schematic diagram of the structure of a ground length adjustment unit provided in the embodiment of the application. (Combined with...) Figure 1 and Figure 2 The ground length adjustment unit 104 includes at least one impedance adjustment circuit 108, which is connected in series between the first antenna ground 105 and the second antenna ground 106. The impedance adjustment circuit 108 is used to adjust its own capacitance and / or inductance value. Figure 2 An exemplary embodiment shows that the ground length adjustment unit 104 includes an impedance adjustment circuit 108.

[0055] Specifically, at least one impedance adjustment circuit 108 is provided between the first antenna ground 105 and the second antenna ground 106. The impedance adjustment circuit 108 adjusts its own capacitance value to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal 100, so as to achieve the optimal antenna performance of the mobile terminal 100; or the impedance adjustment circuit 108 adjusts its own inductance value to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal 100, so as to achieve the optimal antenna performance of the mobile terminal 100; or the impedance adjustment circuit 108 adjusts its own capacitance and inductance values ​​to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal 100, so as to achieve the optimal antenna performance of the mobile terminal 100.

[0056] It should be noted that the antenna of the mobile terminal 100 is an LC resonant unit composed of an inductor and a capacitor. Therefore, the electrical length of the antenna ground can be adjusted by adjusting its capacitance and / or inductance values ​​through the impedance adjustment circuit 108.

[0057] In some embodiments, continue to refer to Figure 2 The impedance adjustment circuit 108 includes a multiplexer 109 and multiple reactive element groups 110. The moving terminal C1 of the multiplexer 109 is electrically connected to the first terminal B1 of the impedance adjustment circuit 108. The first terminal D1 of each reactive element group 110 is electrically connected to the stationary terminal C2 of the multiplexer 109. The second terminal D2 of each reactive element group 110 is electrically connected to the second terminal B2 of the impedance adjustment circuit 108. The reactive element group 110 includes at least one capacitive element and / or at least one inductive element. The reactance of different reactive element groups 110 is different.

[0058] Specifically, the multiplexer 109 includes a moving terminal C1 and multiple stationary terminals C2. The moving terminal C1 of the multiplexer 109 is electrically connected to the first terminal B1 of the impedance adjustment circuit 108, thereby connecting the first antenna ground 105 through the first terminal B1 of the impedance adjustment circuit 108. The multiple stationary terminals C2 of the multiplexer 109 are respectively electrically connected to the first terminal D1 of the corresponding reactive element group 110. The second terminal D2 of each reactive element group 110 is electrically connected to the second terminal B2 of the impedance adjustment circuit 108, thereby connecting the second antenna ground 106 through the second terminal B2 of the impedance adjustment circuit 108.

[0059] Figure 2 An exemplary embodiment shows a multiplexer 109 comprising four stationary terminals C2, with four different reactive element groups 110 corresponding to each of the four stationary terminals C2. The reactance of each of the four reactive element groups 110 is different; that is, each reactive element group 110 has a different capacitive and / or inductive element. Thus, by electrically connecting the moving terminal C1 of the multiplexer 109 to one of the stationary terminals C2, different reactive element groups 110 can be connected in series between the first antenna ground 105 and the second antenna ground 106 to adjust the capacitance and / or inductance values ​​of the impedance adjustment circuit 108. This adjusts the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the mobile terminal 100's antenna, thereby optimizing the antenna performance of the mobile terminal 100.

[0060] It should be noted that the multiplexer switch 109 may also include five stationary terminals C2 and five different reactive element groups 110, so as to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal 100, so that the antenna performance of the mobile terminal 100 can be optimized. This application embodiment does not make specific limitations on this, as long as the antenna performance adjustment requirements are met.

[0061] In some embodiments, Figure 3 This is a schematic diagram of the structure of another mobile terminal provided in an embodiment of this application. Figure 3 As shown, the mobile terminal 100 also includes a metal hinge structure 111. The first screen unit 101 and the second screen unit 102 are connected through the metal hinge structure 111 and are folded around the metal hinge structure 111. The ground length adjustment unit 104 includes a first impedance adjustment circuit 01 and a second impedance adjustment circuit 02. The first impedance adjustment circuit 01 is placed in the first screen unit 101, and the second impedance adjustment circuit 02 is placed in the second screen unit 102. The first impedance adjustment circuit 01 is connected in series between the first antenna ground 105 and the metal hinge structure 111, and the second impedance adjustment circuit 02 is connected in series between the second antenna ground 106 and the metal hinge structure 111.

[0062] Specifically, a metal hinge structure 111 can be provided to realize the connection between the first screen unit 101 and the second screen unit 102, and the first screen unit 101 and the second screen unit 102 can be folded along the metal hinge structure 111 to form different folding angles.

[0063] Specifically, a first impedance adjustment circuit 01 is disposed on the first screen unit 101 and connected between the first antenna ground 105 and the metal rotating shaft structure 111; a second impedance adjustment circuit 02 is disposed on the second screen unit 102 and connected between the second antenna ground 106 and the metal rotating shaft structure 111. Specifically, as shown... Figure 3 As shown, the metal shaft structure 111 includes a first end 112 and a first connecting portion 011 and a second connecting portion 012 located at the first end 112 and disposed opposite to each other. A first impedance adjustment circuit 01 is connected to the first connecting portion 011, and a second impedance adjustment circuit 02 is connected to the second connecting portion 012. Thus, the first impedance adjustment circuit 01 and the second impedance adjustment circuit 02 are connected in series between the first antenna ground 105 and the second antenna ground 106 through the first end 112 of the metal shaft structure 111.

[0064] For example, Figure 4 This is a schematic diagram of another length adjustment unit provided in an embodiment of this application. Figure 4As shown, the ground length adjustment unit 104 includes a first impedance adjustment circuit 01 and a second impedance adjustment circuit 02, which are connected in series between the first antenna ground 105 and the second antenna ground 106. Thus, by adjusting the capacitance and / or inductance values ​​of the first impedance adjustment circuit 01 and the second impedance adjustment circuit 02, the adjustment range of the ground length adjustment unit 104 for the electrical length of the antenna ground is increased. Therefore, when the mobile terminal 100 is in different folding angle states, open states, and closed states, the antenna state of the mobile terminal 100 is tuned by adjusting the operating states of the first impedance adjustment circuit 01 and the second impedance adjustment circuit 02, thereby adjusting the antenna state of the mobile terminal 100 to the optimal state.

[0065] In some embodiments, Figure 5 This is a schematic diagram of the structure of another mobile terminal provided in this embodiment. For example... Figure 5 As shown, the ground length adjustment unit 104 also includes a third impedance adjustment circuit 03, and the metal shaft structure 111 also includes a second end 113 opposite to the first end 112; the third impedance adjustment circuit 03 is placed in the first screen unit 101, and the third impedance adjustment circuit 03 is connected in series between the first antenna ground 105 and the second end 113.

[0066] Specifically, a third impedance adjustment circuit 03 is provided and connected between the first antenna ground 105 and the second end 113 of the metal shaft structure 111. When adjusting the electrical length of the antenna ground of the mobile terminal 100, the second impedance adjustment circuit 02 and the third impedance adjustment circuit 03 can be turned on, and the first impedance adjustment circuit 01 can be turned off. The second impedance adjustment circuit 02, the metal shaft structure 111, and the third impedance adjustment circuit 03 can be connected in series between the first antenna ground 105 and the second antenna ground 106. Thus, by connecting the metal shaft structure 111 to the series circuit of the first antenna ground 105 and the second antenna ground 106, the electrical length of the antenna ground can be increased.

[0067] For example, Figure 6 This is a schematic diagram of another length adjustment unit provided in an embodiment of this application. Figure 6 As shown, the third impedance adjustment circuit 03, the metal shaft structure 111, and the second impedance adjustment circuit 02 are connected in series between the first antenna ground 105 and the second antenna ground 106.

[0068] In some embodiments, Figure 7 This is a schematic diagram of the structure of another mobile terminal provided in an embodiment of this application. For example... Figure 7As shown, the third impedance adjustment circuit 03 is placed in the second screen unit 102, and the third impedance adjustment circuit 03 is connected in series between the second antenna ground 106 and the second end 113.

[0069] Specifically, when adjusting the electrical length of the antenna ground of the mobile terminal 100, the first impedance adjustment circuit 01 and the third impedance adjustment circuit 03 can be turned on, and the second impedance adjustment circuit 02 can be turned off. This connects the first impedance adjustment circuit 01, the metal shaft structure 111, and the third impedance adjustment circuit 03 in series between the first antenna ground 105 and the second antenna ground 106. Thus, by connecting the metal shaft structure 111 to the series circuit of the first antenna ground 105 and the second antenna ground 106, the electrical length of the antenna ground can be increased.

[0070] For example, Figure 8 This is a schematic diagram of another length adjustment unit provided in an embodiment of this application. Figure 8 As shown, the first impedance adjustment circuit 01, the metal shaft structure 111, and the third impedance adjustment circuit 03 are connected in series between the first antenna ground 105 and the second antenna ground 106.

[0071] This application also provides an antenna performance adjustment method, which is implemented based on the mobile terminal described in the above-mentioned embodiments, and therefore has the same or similar beneficial effects, which will not be repeated here.

[0072] Figure 9 This is a flowchart illustrating an antenna performance adjustment method provided in an embodiment of this application. This method is applicable to application scenarios requiring adjustment of the antenna performance of a mobile terminal. This method can be executed by the antenna performance adjustment device provided in this embodiment, which can be implemented in software and / or hardware. Figure 1 As shown, the antenna performance adjustment method includes the following steps:

[0073] S201. Obtain the folding angle of the mobile terminal and the operating wavelength of the antenna.

[0074] Specifically, as described above, the folding angle of the mobile terminal is detected by the folding angle detection unit, thereby obtaining the folding angle. Simultaneously, based on the mobile terminal's operating state, the corresponding antenna operating wavelength is obtained. For example, the mobile terminal's antenna is currently operating at low frequency, mid frequency, or high frequency.

[0075] S202. Adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength according to the folding angle and the operating wavelength.

[0076] Specifically, this step adjusts the impedance adjustment circuit in the ground length adjustment unit based on the folding angle of the mobile terminal and the operating wavelength of the antenna obtained in S201, adjusting the electrical length of the antenna ground of the mobile terminal to 1 / 4 of the operating wavelength, so that the antenna performance of the mobile terminal reaches the optimal state, thereby improving the user experience.

[0077] In some embodiments, adjusting the electrical length of the antenna ground to 1 / 4 of the operating wavelength according to the folding angle and the operating wavelength includes:

[0078] The impedance adjustment circuit corresponding to the folding angle and the working wavelength, as well as the corresponding capacitance value and / or corresponding inductance value of the impedance adjustment circuit, are determined from the pre-established first correspondence. The first correspondence is used to characterize the correspondence between the folding angle of the mobile terminal, the working wavelength of the antenna, and the impedance adjustment circuit and its capacitance value and / or inductance value when the electrical length of the antenna ground is equal to 1 / 4 of the working wavelength.

[0079] The capacitance and / or inductance values ​​of the impedance adjustment circuit determined from the first correspondence will be adjusted to the corresponding capacitance and / or inductance values.

[0080] Specifically, during the initial debugging process, with the electrical length of the antenna ground equal to 1 / 4 of the operating wavelength, the correspondence between the mobile terminal's folding angle, the antenna's operating wavelength, and the impedance adjustment circuit and its capacitance and / or inductance values ​​is established, thus creating a first correspondence. This first correspondence can be compiled into a correspondence table, which is stored on the mobile terminal's processor. During mobile terminal application, the first correspondence stored in the processor is directly invoked. Based on the mobile terminal's folding angle and operating wavelength, the corresponding impedance adjustment circuit and its corresponding capacitance and / or inductance values ​​are determined from the first correspondence. This allows the impedance adjustment circuit to be adjusted so that the electrical length of the antenna ground is adjusted to 1 / 4 of the mobile terminal's antenna's operating wavelength, achieving optimal antenna performance.

[0081] In some embodiments, adjusting the electrical length of the antenna ground to 1 / 4 of the operating wavelength according to the folding angle and the operating wavelength includes:

[0082] The selection status of each multiplexer switch corresponding to the folding angle and the operating wavelength is determined from the pre-established second correspondence. The second correspondence is used to characterize the correspondence between the folding angle of the mobile terminal, the operating wavelength of the antenna, and the selection status of each multiplexer switch when the electrical length of the antenna ground is equal to 1 / 4 of the operating wavelength. Based on the selection status of each multiplexer switch determined from the second correspondence, each multiplexer switch is controlled to perform the selection operation of the corresponding path.

[0083] Specifically, during the initial debugging process, with the electrical length of the antenna ground equal to 1 / 4 of the operating wavelength, the correspondence between the folding angle of the mobile terminal, the operating wavelength of the antenna, and the selection status of each multiplexer switch is established, i.e., a second correspondence is created. This second correspondence can be formed into a correspondence table, which is stored on the mobile terminal's processor. During the application of the mobile terminal, the second correspondence stored in the processor is directly invoked. Based on the folding angle and operating wavelength of the mobile terminal, the selection status of each multiplexer switch is determined from the second correspondence. Each multiplexer switch is then controlled to perform the selection operation of the corresponding path, thereby adjusting the impedance adjustment circuit so that the electrical length of the antenna ground is adjusted to 1 / 4 of the operating wavelength of the mobile terminal's antenna, achieving optimal antenna performance for the mobile terminal.

[0084] It should be understood that, although Figure 9 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 9 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0085] Based on the above embodiments, this application also provides an antenna performance adjustment device. Figure 10 This is a schematic diagram of an antenna performance adjustment device provided in an embodiment of this application. Figure 10 As shown, the antenna performance adjustment device includes: an acquisition module 31 for acquiring the folding angle of the mobile terminal and the operating wavelength of the antenna; and an adjustment module 32 for adjusting the electrical length of the antenna ground to 1 / 4 of the operating wavelength according to the folding angle and the operating wavelength.

[0086] The mobile terminal photography devices provided in the above-described embodiments are used to perform the above-described mobile terminal photography, and therefore have the same or similar beneficial effects, which will not be repeated here.

[0087] Specific limitations regarding the antenna performance adjustment device can be found in the limitations of the antenna performance adjustment device method described above, and will not be repeated here. Each module in the aforementioned antenna performance adjustment device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the processor in a computer device, or stored in software in the memory of a computer device, so that the processor can call and execute the operations corresponding to each module.

[0088] This application also provides a mobile terminal, the internal structure of which can be shown in the following embodiment: Figure 11 As shown, the mobile terminal includes a processor, memory, communication interface, display screen, and input device connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The communication interface allows for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, Near Field Communication (NFC), or other technologies. When executed by the processor, the computer program implements an antenna performance adjustment method. The display screen can be an LCD screen or an e-ink screen. The input device can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the mobile terminal's casing, or an external keyboard, touchpad, or mouse.

[0089] Those skilled in the art will understand that Figure 11 The structure shown is merely a block diagram of a portion of the structure related to the solution of this application and does not constitute a limitation on the mobile terminal to which the solution of this application is applied. A specific mobile terminal may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0090] In some embodiments, the antenna performance adjustment device provided in this application can be implemented as a computer program, and the computer program can be implemented as follows: Figure 11 The device operates on the mobile terminal shown. The mobile terminal's memory can store the various program modules that make up the antenna performance adjustment device, for example, Figure 10 The acquisition module 31 and adjustment module 32 are shown. The computer program, composed of these modules, causes the processor to execute the steps in the antenna state adjustment methods of the various embodiments of this application described in this specification.

[0091] For example, Figure 11 The mobile terminal shown can be accessed via, for example... Figure 10The acquisition module 31 in the antenna performance adjustment device shown acquires the folding angle of the mobile terminal. The mobile terminal can then adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength based on the folding angle and the operating wavelength via the adjustment module 32.

[0092] In some embodiments, this application provides a mobile terminal, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the steps in the above-described method embodiments, having the same or similar beneficial effects, which will not be elaborated here.

[0093] This application also provides a computer-readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the steps in the above-described method embodiments and has the same or similar beneficial effects, which will not be repeated here.

[0094] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static random access memory (SRAM) and dynamic random access memory (DRAM), etc.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A mobile terminal, characterized in that, include: A first screen unit and a second screen unit, wherein the first screen unit and the second screen unit are connected and can be folded in half; A metal hinge structure is provided, in which the first screen unit and the second screen unit are connected and folded around the metal hinge structure. A folding angle detection unit is used to detect the folding angle of the first screen unit and the second screen unit; A ground length adjustment unit is provided, wherein a first end of the ground length adjustment unit is electrically connected to the first antenna ground of the first screen unit, and a second end is electrically connected to the second antenna ground of the second screen unit. The first antenna ground and the second antenna ground constitute the antenna ground of the mobile terminal. The ground length adjustment unit is used to adjust the electrical length of the antenna ground. The ground length adjustment unit includes at least one impedance adjustment circuit, which is connected in series between the first antenna ground and the second antenna ground. The impedance adjustment circuit is used to adjust its own capacitance and / or inductance value. The ground length adjustment unit includes a first impedance adjustment circuit and a second impedance adjustment circuit, wherein the first impedance adjustment circuit is placed in the first screen unit, and the second impedance adjustment circuit is placed in the second screen unit. The first impedance adjustment circuit is connected in series between the first antenna ground and the metal rotating shaft structure, and the second impedance adjustment circuit is connected in series between the second antenna ground and the metal rotating shaft structure. The control unit is electrically connected to the folding angle detection unit and the ground length adjustment unit, and is used to control the ground length adjustment unit to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength of the antenna of the mobile terminal according to the operating wavelength of the antenna and the folding angle detected by the folding angle detection unit.

2. The mobile terminal according to claim 1, characterized in that, The impedance adjustment circuit includes a multiplexer switch and multiple groups of reactive elements. The moving end of the multiplexer switch is electrically connected to the first end of the impedance adjustment circuit. The first end of each group of reactive elements is electrically connected to the stationary end of the multiplexer switch. The second end of each group of reactive elements is electrically connected to the second end of the impedance adjustment circuit. Each group of reactive elements includes at least one capacitive element and / or at least one inductive element, and the reactance of different groups of reactive elements is different.

3. The mobile terminal according to claim 1, characterized in that, The metal shaft structure includes a first end and a first connecting part and a second connecting part located at the first end and disposed opposite to each other. The first impedance adjustment circuit is connected to the first connecting part, and the second impedance adjustment circuit is connected to the second connecting part.

4. The mobile terminal according to claim 3, characterized in that, The ground length adjustment unit further includes a third impedance adjustment circuit, and the metal shaft structure further includes a second end opposite to the first end; The third impedance adjustment circuit is placed in the first screen unit and connected in series between the first antenna ground and the second end; or, the third impedance adjustment circuit is placed in the second screen unit and connected in series between the second antenna ground and the second end.

5. A method for adjusting antenna performance, characterized in that, Based on the mobile terminal as described in any one of claims 1-4, the method includes: Obtain the folding angle of the mobile terminal and the operating wavelength of the antenna; Based on the folding angle and the operating wavelength, the electrical length of the antenna ground is adjusted to 1 / 4 of the operating wavelength; The process of adjusting the electrical length of the antenna ground to 1 / 4 of the operating wavelength, based on the folding angle and the operating wavelength, includes: The impedance adjustment circuit corresponding to the folding angle and the working wavelength, as well as the corresponding capacitance value and / or corresponding inductance value of the impedance adjustment circuit, are determined from the pre-established first correspondence. The first correspondence is used to characterize the correspondence between the folding angle of the mobile terminal, the working wavelength of the antenna, and the impedance adjustment circuit and its capacitance value and / or inductance value when the electrical length of the antenna ground is equal to 1 / 4 of the working wavelength. The capacitance and / or inductance values ​​of the impedance adjustment circuit determined from the first correspondence will be adjusted to the corresponding capacitance and / or inductance values.

6. The antenna performance adjustment method according to claim 5, characterized in that, Adjusting the electrical length of the antenna ground to 1 / 4 of the operating wavelength based on the folding angle and the operating wavelength includes: The selection status of each multiplexer switch corresponding to the folding angle and the operating wavelength is determined from the pre-established second correspondence, wherein the second correspondence is used to characterize the correspondence between the folding angle of the mobile terminal, the operating wavelength of the antenna, and the selection status of each multiplexer switch when the electrical length of the antenna ground is equal to 1 / 4 of the operating wavelength. Based on the selection status of each multiplexer determined from the second correspondence, each multiplexer is controlled to perform the selection operation of the corresponding path.

7. An antenna performance adjustment device, characterized in that, include: The acquisition module is used to acquire the folding angle of the mobile terminal and the operating wavelength of the antenna; The mobile terminal is the mobile terminal as described in any one of claims 1-4; An adjustment module is used to adjust the electrical length of the antenna ground to 1 / 4 of the operating wavelength according to the folding angle and the operating wavelength.

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