Antenna Module and Electronic Device

Abstract

The present application discloses an antenna module and an electronic device. The antenna module includes: a main antenna unit disposed on a first body of the electronic device; a parasitic antenna unit disposed on a second body of the electronic device, and the parasitic antenna unit and the main antenna unit are disposed at the same end. The first body and the second body are connected by a connecting component, and the first body and the second body can be switched between an unfolded state and a folded state; when the first body and the second body are in the unfolded state, the distance between one end of the main antenna unit close to the connecting component and one end of the parasitic antenna unit close to the connecting component is (nλ) / 2. The present application can selectively improve the antenna radiation efficiency of the electronic device in the unfolded state or in the folded state, has high flexibility and usability, and has a simple hardware structure without adding additional components, and has a low design cost.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to an antenna module and an electronic device. Background Art

[0002] Flexible screens are widely used in electronic devices. For an electronic device with a folding screen, it has multiple screens. The multiple screens are connected by a connecting component, and the multiple screens can be switched between an unfolded state and a folded state. The main antenna is generally disposed in one of the multiple screens. The main antenna excites the current on the parasitic stub through the ground current via the connecting component to excite the parasitic antenna disposed in other screens to achieve the radiation of the antenna. In the process of implementing this application, the applicant found that there are at least the following problems in the prior art: For a folding screen, the radiation efficiency of its main antenna is relatively low. Summary of the Invention

[0003] An object of the embodiments of this application is to provide an antenna module and an electronic device, which at least solve one of the problems of relatively low antenna radiation efficiency.

[0004] To solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of this application provides an antenna module, including:

[0006] A main antenna unit, which is disposed on a first main body of the electronic device;

[0007] A parasitic antenna unit, which is disposed on a second main body of the electronic device, and the parasitic antenna unit and the main antenna unit are disposed at the same end. The first main body and the second main body are connected by a connecting component, and the first main body and the second main body can be switched between an unfolded state and a folded state;

[0008] When the first main body and the second main body are in the unfolded state, the shortest distance between one end of the main antenna unit close to the connecting component and one end of the parasitic antenna unit close to the connecting component is (nλ) / 2; where λ is the target operating wavelength of the main antenna unit, n > 0 and n is an odd or even number.

[0009] In a second aspect, an embodiment of this application provides an electronic device, including:

[0010] A first main body;

[0011] A second main body;

[0012] The antenna module as described in the first aspect, where the antenna module is disposed on the first main body and the second main body.

[0013] In the embodiments of the present application, by setting the distance between the main antenna unit and the parasitic antenna unit to (nλ) / 2 and selecting the parity of n based on actual requirements, the directions of the currents in the main antenna unit and the parasitic antenna unit in the unfolded state are adjusted based on actual requirements, so as to selectively improve the antenna radiation efficiency of the main antenna unit of the electronic device in the unfolded state or the antenna radiation efficiency of the main antenna unit in the folded state. It has high flexibility and usability, and the hardware structure is simple without adding additional components, having a low design cost.

[0014] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is one of the schematic structural diagrams of the antenna module provided by the embodiments of the present application;

[0016] Figure 2 is another schematic structural diagram of the antenna module provided by the embodiments of the present application;

[0017] Figure 3 is the third schematic structural diagram of the antenna module provided by the embodiments of the present application;

[0018] Figure 4 is the fourth schematic structural diagram of the antenna module provided by the embodiments of the present application;

[0019] Figure 5 is the fifth schematic structural diagram of the antenna module provided by the embodiments of the present application;

[0020] Figure 6 is the sixth schematic structural diagram of the antenna module provided by the embodiments of the present application;

[0021] Figure 7 is the seventh schematic structural diagram of the antenna module provided by the embodiments of the present application;

[0022] Figure 8 is one of the schematic circuit diagrams of the antenna module provided by the embodiments of the present application;

[0023] Figure 9 is another schematic circuit diagram of the antenna module provided by the embodiments of the present application.

[0024] Reference Signs:

[0025] 111: main antenna arm; 114: feeding end; 121: parasitic antenna arm;

[0026] 161: first slit; 112: first ground return end; 162: second slit; 122: second ground return end;

[0027] 123: First frequency adjustment component; 113: Second frequency adjustment component;

[0028] 171: First clearance area; 172: Second clearance area;

[0029] R1: First resistor; R2: Second resistor; R3: Third resistor;

[0030] K1: First switch; 129: First matching network module;

[0031] R4: Fourth resistor; R5: Fifth resistor; K2: Second switch; 119: Second matching network module;

[0032] 118: Radio frequency circuit; 190: Decorative ring. Detailed implementation manners

[0033] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0034] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally means an "or" relationship between the associated objects before and after.

[0035] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "thickness", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] The following will describe an antenna module according to an embodiment of the present application in conjunction with Figures 1-9 the description.

[0038] As Figure 1 shown, an antenna module according to some embodiments of the present application includes: a main antenna unit and a parasitic antenna unit.

[0039] In this embodiment, the main antenna unit is disposed on a first main body 130 of the electronic device; the parasitic antenna unit is disposed on a second main body 140 of the electronic device.

[0040] The first main body 130 and the second main body 140 are connected by a connection component 150, and the first main body 130 and the second main body 140 are switchable between an unfolded state and a folded state.

[0041] The connection component 150 can be a hinge structure or other structures that can achieve a folding function.

[0042] Specifically, the first main body 130 and the second main body 140 can be switched between an unfolded state and a folded state by folding, wherein the folding can be an inward folding.

[0043] The parasitic antenna unit and the main antenna unit are disposed at the same end.

[0044] Wherein, at least part of the main antenna unit and at least part of the parasitic antenna unit are made of a metal conductive material.

[0045] When the electronic device is operating normally, in the unfolded state, the parasitic antenna unit in the second main body 140 is mainly excited by the ground current, that is, the main antenna unit in the first main body 130 excites the current on the parasitic antenna unit through the ground current via the connection component 150.

[0046] In the folded state, the parasitic antenna unit in the second main body 140 is simultaneously excited by space coupling and the ground current.

[0047] Exemplarily, the form of the main antenna unit can be a common dual-band IFA (Inverted F Antenna).

[0048] Of course, in other embodiments, the form of the main antenna unit can also be a monopole, PIFA, LOOP, or other forms, which are not limited in this application.

[0049] The form of the parasitic antenna unit is the same as that of the main antenna unit.

[0050] When the first body 130 and the second body 140 are in the unfolded state, the shortest distance between the end of the main antenna unit close to the connection component 150 and the end of the parasitic antenna unit close to the connection component 150 is (nλ) / 2; where λ is the target operating wavelength of the main antenna unit, n > 0 and n can be an odd or even number.

[0051] Among them, when n is an even number, n can take values of 2, 4, 6, or any other positive even value; when n is an odd number, n can take values of 1, 3, or any other positive odd value, which are not limited in this application.

[0052] In this application, the operating frequency range or the number of operating frequency bands of the main antenna unit is not limited and can be applied to 4G, 5G, or any other network.

[0053] It should be noted that when the main antenna unit is operating normally, when n is an even number, in the unfolded state, the currents in the main antenna unit and the parasitic antenna unit are in the same direction; in the folded state, the currents in the main antenna unit and the parasitic antenna unit are in the opposite direction.

[0054] Figure 1 An example of the current directions in the main antenna unit and the parasitic antenna unit in the unfolded state when n is an even number is shown, as indicated by the arrow directions, both are counterclockwise.

[0055] When n is an odd number, in the unfolded state, the currents in the main antenna unit and the parasitic antenna unit are in the opposite direction; in the folded state, the currents in the main antenna unit and the parasitic antenna unit are in the same direction.

[0056] Figure 4 An example of the current directions in the main antenna unit and the parasitic antenna unit in the unfolded state when n is an odd number is shown, as indicated by the arrow directions, where the current direction in the main antenna unit is counterclockwise and the current direction in the parasitic antenna unit is clockwise.

[0057] Figure 5 An example of the current directions in the main antenna unit and the parasitic antenna unit in the folded state when n is an odd number is shown, where the dashed arrow represents the direction of spatial coupling excitation and the solid arrow represents the direction of ground current excitation. It can be seen that the direction of spatial coupling excitation is opposite to the direction of ground current excitation.

[0058] It should be noted that when the currents in the main antenna unit and the parasitic antenna unit are in the same direction, the antenna radiation efficiency of the corresponding main antenna unit is higher than that when the currents in the main antenna unit and the parasitic antenna unit are in the opposite direction.

[0059] For example, in some embodiments, the shortest distance between the first ground end 112 and the second ground end 122 in the unfolded state can be set to an even multiple of λ / 2, so that in the unfolded state, the currents in the main antenna unit and the parasitic antenna unit are in the same direction, thereby improving the antenna radiation efficiency of the main antenna unit in the unfolded state.

[0060] Again, in some other embodiments, the distance between the first ground end 112 and the second ground end 122 in the unfolded state can be set to an odd multiple of λ / 2, so that in the unfolded state, the currents in the main antenna unit and the parasitic antenna unit are in the opposite direction, while in the folded state, the currents in the main antenna unit and the parasitic antenna unit are in the same direction, thereby improving the antenna radiation efficiency of the main antenna unit in the folded state.

[0061] According to the antenna module of the embodiments of the present application, by setting the distance between the main antenna unit and the parasitic antenna unit to (nλ) / 2 and selecting the parity of n based on actual needs, the direction of the currents in the main antenna unit and the parasitic antenna unit in the unfolded state is adjusted based on actual needs, so as to selectively improve the antenna radiation efficiency of the main antenna unit of the electronic device in the unfolded state or the antenna radiation efficiency of the main antenna unit in the folded state. It has high flexibility and usability, and the hardware structure is simple without adding additional components, and has a low design cost.

[0062] Continue to refer to Figure 1 , according to some embodiments of the present application, the main antenna unit includes a feeding end 114 and a main antenna arm 111. The feeding end 114 is connected between the main antenna arm 111 and the first main body 130, and one end of the feeding end 114 is connected to the main antenna arm 111, and the other end is grounded through the first main body 130. The parasitic antenna unit includes a parasitic antenna arm 121, and the lengths of the main antenna arm 111 and the parasitic antenna arm 121 are equal.

[0063] In this embodiment, the main antenna arm 111 and the first main body 130 are in the same plane, and the main antenna arm 111 is perpendicular to the connecting component 150; the parasitic antenna arm 121 and the second main body 140 are in the same plane, and the parasitic antenna arm 121 is perpendicular to the connecting component 150.

[0064] Clearance areas are provided inside both the main antenna unit and the parasitic antenna unit.

[0065] In some embodiments, the first clearance area 171 inside the main antenna unit and the second clearance area 172 inside the parasitic antenna unit are of the same size and symmetric.

[0066] The clearance area is used to reduce the influence of the metal frame (equivalent to a metal ground) of the second body 140 on the antenna performance of the main antenna unit in the folded state.

[0067] The main antenna arm 111 is disposed on the first body 130, and a first clearance area 171 is formed between the main antenna arm 111 and the first body 130; the parasitic antenna arm 121 is disposed on the second body 140, and a second clearance area 172 is formed between the parasitic antenna arm 121 and the second body 140.

[0068] The feeding end 114 is used for power supply.

[0069] The feeding end 114 is disposed in the clearance area inside the first body 130 and is electrically connected to both the main antenna arm 111 and the first body 130 respectively.

[0070] In some embodiments, the lengths of both the main antenna arm 111 and the parasitic antenna arm 121 are λ / 4; where λ is the target operating wavelength of the main antenna unit, n>0 and n is an odd or even number.

[0071] In some other embodiments, the lengths of the main antenna arm 111 and the parasitic antenna arm 121 can be other values, which will be described below.

[0072] According to the antenna module of the embodiments of the present application, by making the lengths of the main antenna arm 111 and the parasitic antenna arm 121 consistent, it is possible to make the main antenna unit and the parasitic antenna unit maintain symmetry as much as possible in the folded state, thereby improving the aesthetics of the electronic device.

[0073] According to some embodiments of the present application, when n is an even number and the first body 130 and the second body 140 are in the unfolded state, the main antenna unit and the parasitic antenna unit are arranged in the same direction or facing away from each other.

[0074] In this embodiment, when n is an even number, that is, in the unfolded state, the shortest distance between one end of the main antenna unit close to the connection component 150 and one end of the parasitic antenna unit close to the connection component 150 is an even multiple of λ / 2. At this time, the currents in the main antenna unit and the parasitic antenna unit are in the same direction, and the antenna radiation efficiency of the main antenna unit in the unfolded state is relatively high.

[0075] In this case, the main antenna unit and the parasitic antenna unit can be axially symmetrically arranged based on the connection component 150 between the first body 130 and the second body 140; alternatively, the main antenna unit and the parasitic antenna unit can be arranged in the same direction.

[0076] According to the antenna module of the embodiment of the present application, by setting n to an even number, it is ensured that when the electronic device is in the unfolded state, the current directions inside the main antenna unit and the parasitic antenna unit are the same, thereby improving the antenna radiation efficiency of the main antenna unit in the unfolded state.

[0077] The following specifically describes the setting method from two implementation perspectives.

[0078] One, the slits are provided at both ends

[0079] As Figure 1 and Figure 3 shown, according to some embodiments of the present application, the main antenna unit is provided with a first slit 161, and the parasitic antenna unit is provided with a second slit 162;

[0080] The first slit 161 is provided at one end of the main antenna arm 111, and the distance from the first slit 161 of the main antenna unit to the first ground end 112 is λ / 4;

[0081] The second slit 162 is provided at one end of the parasitic antenna arm 121, and the distance from the second slit 162 of the parasitic antenna unit to the second ground end 122 is λ / 4;

[0082] In this embodiment, the main antenna unit includes a first slit 161, and the parasitic antenna unit includes a second slit 162.

[0083] One end of the main antenna arm 111 is connected to the first main body 130, and a first slit 161 is formed between the other end and the first main body 130; one end of the parasitic antenna arm 121 is connected to the second main body 140, and a second slit 162 is formed between the other end and the second main body 140.

[0084] The main antenna unit includes a first ground end 112, and the parasitic antenna unit includes a second ground end 122.

[0085] Among them, the distance from the first slit 161 of the main antenna unit to the first ground end 112 is λ / 4, that is, the length of the main antenna arm 111 is λ / 4; the distance from the second slit 162 of the parasitic antenna unit to the second ground end 122 is λ / 4, that is, the length of the parasitic antenna arm 121 is λ / 4.

[0086] As Figure 1 shown, in some embodiments, when the main antenna unit and the parasitic antenna unit are arranged in a facing-away manner, in the unfolded state, the first ground end 112 and the second ground end 122 are symmetrically arranged along the connecting component 150, and the first slit 161 and the second slit 162 are symmetrically arranged along the connecting component 150; the shortest distance between the first ground end 112 of the main antenna unit and the second ground end 122 of the parasitic antenna unit is an even multiple of λ / 2.

[0087] Specifically, in the deployed state, the distances of the first ground end 112 and the second ground end 122 from the axis of the connection component 150 are equal, both being (nλ) / 4; the distance between the first slot 161 and the second slot 162 is (λ / 4 + (nλ) / 4 + λ / 4); where n is an even number.

[0088] The main antenna arm 111 of the first body 130 excites a quarter-wavelength IFA mode from the first slot 161 to the first ground end 112. The ground current is transmitted through the connection component 150 to the parasitic antenna arm 121 of the second body 140. After traveling an even multiple of λ / 2, a co-directional current is excited in the parasitic antenna arm 121, thereby improving the antenna efficiency.

[0089] As Figure 3 shown, in some other embodiments, when the main antenna unit and the parasitic antenna unit are arranged in the same direction, in the deployed state, the direction from the first ground end 112 to the first slot 161 in the main antenna unit is the same as the direction from the second ground end 122 to the second slot 162 in the parasitic antenna unit;

[0090] Specifically, in the deployed state, the shortest distance between the first ground end 112 of the main antenna unit and the second slot 162 of the parasitic antenna unit is an even multiple of λ / 2; the distance of the first ground end 112 from the axis of the connection component 150 is (nλ) / 4, and the lengths of both the main antenna arm 111 and the parasitic antenna arm 121 are λ / 4.

[0091] Second, the slot is provided in the middle

[0092] As Figure 2 shown, according to some embodiments of the present application, the main antenna unit is provided with a first slot 161, and the parasitic antenna unit is provided with a second slot 162; the first slot 161 is provided in the middle of the main antenna arm 111; the second slot 162 is provided in the middle of the parasitic antenna arm 121.

[0093] In this embodiment, in the deployed state, the main antenna unit and the parasitic antenna unit are arranged facing away from each other. In the deployed state, the first ground end 112 and the second ground end 122 are axially symmetrically arranged along the connection component 150, and the first slot 161 and the second slot 162 are axially symmetrically arranged along the connection component 150; the distance between the first ground end 112 and the second ground end 122 is (nλ) / 2, where n is an even number; and the total length of the main antenna arm 111 including the first slot 161 is λ / 2, and the total length of the parasitic antenna arm 121 including the second slot 162 is λ / 2.

[0094] According to the antenna module of the embodiments of the present application, by providing various setting methods for the main antenna unit and the parasitic antenna unit, users can flexibly select the best design method based on actual needs, while improving the antenna radiation efficiency of the main antenna unit of the electronic device in the unfolded state or the folded state, and also improving flexibility and usability.

[0095] As Figure 4 shown, according to some embodiments of the present application, when n is odd and the first main body 130 and the second main body 140 are in the unfolded state, the main antenna unit and the parasitic antenna unit are arranged facing away from each other.

[0096] In this embodiment, when n is odd, that is, in the unfolded state, the shortest distance between the end of the main antenna unit close to the connection component 150 and the end of the parasitic antenna unit close to the connection component 150 is an odd multiple of λ / 2. At this time, the currents in the main antenna unit and the parasitic antenna unit are in opposite directions, while in the folded state, the currents in the antenna unit and the parasitic antenna unit are in the same direction. At this time, the antenna radiation efficiency of the main antenna unit in the folded state is relatively high.

[0097] When n is odd, in the unfolded state, the main antenna unit and the parasitic antenna unit can be arranged axially symmetrically based on the connection component 150 between the first main body 130 and the second main body 140, and the shortest distance between the first ground end 112 of the main antenna unit and the second ground end 122 of the parasitic antenna unit is an odd multiple of λ / 2.

[0098] For example, in the unfolded state, the distances from the first ground end 112 and the second ground end 122 to the axis of the connection component 150 are equal, both being (nλ) / 4; the distance between the first slit 161 and the second slit 162 is (λ / 4 + (nλ) / 4 + λ / 4); where n is odd.

[0099] Among them, the distance from the first slit 161 of the main antenna unit to the first ground end 112 is λ / 4, that is, the length of the main antenna arm 111 is λ / 4; the distance from the second slit 162 of the parasitic antenna unit to the second ground end 122 is λ / 4, that is, the length of the parasitic antenna arm 121 is λ / 4.

[0100] According to the antenna module of the embodiments of the present application, by setting n to be odd, it is ensured that in the folded state of the electronic device, the current directions inside the main antenna unit and the parasitic antenna unit are the same, thereby improving the antenna radiation efficiency of the main antenna unit in the folded state.

[0101] As Figure 6 and Figure 7 shown, according to some embodiments of the present application, the parasitic antenna unit may include: a first frequency adjustment component 123 and a third resistor R3.

[0102] In this embodiment, the first frequency adjustment component 123 is used to achieve a multi-frequency effect.

[0103] The multi-frequency effect includes: high frequency and low frequency.

[0104] The first frequency adjustment component 123 is disposed on the parasitic antenna arm 121 and is electrically connected to the parasitic antenna arm 121.

[0105] As Figure 8 shown, the first frequency adjustment component 123 may include: a first resistor R1, a second resistor R2, a first switch K1, and a first matching network module 129; wherein, one end of the first resistor R1 and the second resistor R2 in parallel is grounded, and the other end is connected in series with the first matching network module 129 through the first switch K1.

[0106] One end of the first matching network module 129 is grounded through a third resistor R3, and the other end is electrically connected to the parasitic antenna arm 121.

[0107] Wherein, the resistance value of the third resistor R3 may be 50Ω or other resistance values.

[0108] The first switch K1 and components such as resistors can be of any model that satisfies the antenna function.

[0109] Of course, in other embodiments, the topological structure of the first frequency adjustment component 123 may also be any other form available for antennas, and the present application does not make a limitation.

[0110] According to the antenna module of the embodiment of the present application, by setting the first frequency adjustment component 123, there is no need to add a new radio frequency path, and only devices (such as capacitors, inductors, and switching devices) with the same topology as the matching network or tuning network of the main antenna unit need to be added to achieve the multi-frequency effect. While improving the performance of the electronic device, it can also effectively save costs.

[0111] According to some embodiments of the present application, the main antenna unit may include: a second frequency adjustment component 113 and a radio frequency circuit 118.

[0112] In this embodiment, the second frequency adjustment component 113 is used to adjust the operating wavelength of the main antenna unit, and the second frequency adjustment component 113 is correspondingly arranged with the first frequency adjustment component 123.

[0113] The second frequency adjustment component 113 is disposed on the main antenna arm 111 and is electrically connected to the main antenna arm 111.

[0114] The second frequency adjustment component 113 is similar in structure to the first frequency adjustment component 123.

[0115] As Figure 9As shown, the second frequency adjustment component 113 may include: a fourth resistor R4, a fifth resistor R5, a second switch K2, and a second matching network module 119.

[0116] One end of the parallel connection of the fourth resistor R4 and the fifth resistor R5 is grounded, and the other end is connected in series with the second matching network module 119 through the second switch K2.

[0117] One end of the second matching network module 119 is connected to the RF circuit 118, and the other end is electrically connected to the main antenna arm 111.

[0118] By adjusting the second frequency adjustment component 113, the operating frequency of the main antenna unit can be changed, and thus the operating wavelength of the main antenna unit can be changed.

[0119] Among them, the operating frequency of the main antenna unit includes a high frequency and a low frequency.

[0120] According to the antenna module of the embodiment of the present application, by setting the second frequency adjustment component 113 to achieve a multi-frequency effect, it can not only improve the usage performance of the electronic device, but also save costs.

[0121] According to some embodiments of the present application,

[0122] When the main antenna unit is operating in the low-frequency state and the first main body 130 and the second main body 140 are in the unfolded state, the target operating wavelength is the operating wavelength of the main antenna unit in the low-frequency state;

[0123] When the main antenna unit is operating in the high-frequency state and the first main body 130 and the second main body 140 are in the unfolded state, the target operating wavelength is the operating wavelength of the main antenna unit in the low-frequency state.

[0124] In this embodiment, the operating wavelength of the main antenna unit in the low-frequency state is λ1; the operating wavelength of the main antenna unit in the high-frequency state is λ2.

[0125] It should be noted that in the case where the electronic device has a multi-frequency effect, regardless of whether the main antenna unit is operating in the low-frequency state or the high-frequency state, in the unfolded state, the distance between the end of the main antenna unit close to the connection component 150 and the end of the parasitic antenna unit close to the connection component 150 is (nλ) / 2, where λ = λ1, λ is the target operating wavelength, and the target operating wavelength is the operating wavelength λ1 of the main antenna unit in the low-frequency state.

[0126] In the unfolded state, the distance between the feeding end 114 of the main antenna unit and the first frequency adjustment component 123 of the parasitic antenna unit is (nλ2) / 2; where λ2 is the operating wavelength of the main antenna unit in the high-frequency state.

[0127] Such asFigure 7 As shown, in some embodiments, when n is an even number, in the unfolded state, the current directions of the main antenna unit and the parasitic antenna unit are the same, both being counterclockwise, which improves the antenna radiation efficiency of the main antenna unit in the unfolded state.

[0128] As Figure 6 shown, in other embodiments, when n is an odd number, in the unfolded state, the current directions of the main antenna unit and the parasitic antenna unit are opposite, where the current direction of the main antenna unit is counterclockwise and the current direction of the parasitic antenna unit is clockwise; while in the folded state, the current directions of the main antenna unit and the parasitic antenna unit are the same, thereby improving the antenna radiation efficiency of the main antenna unit in the folded state.

[0129] In other embodiments, in the case where the electronic device only has a single - frequency effect, the target operating wavelength is the actual operating wavelength of the main antenna unit.

[0130] According to the antenna module of the embodiments of the present application, by taking different values of n in the multi - frequency mode, while providing a multi - frequency effect to broaden the application scenarios of the electronic device and improve the performance of the electronic device, users can also select different n values according to actual needs to correspondingly improve the antenna radiation efficiency in the unfolded state or the folded state, thereby further improving the performance of the electronic device.

[0131] Continuing to refer to Figure 6 and Figure 7 , according to some embodiments of the present application, the main antenna unit is provided with a first slot 161, and the parasitic antenna unit is provided with a second slot 162. The first slot 161 is provided at one end of the main antenna unit, and the second slot 162 is provided at one end of the parasitic antenna unit. And in the unfolded state, the main antenna unit and the parasitic antenna unit are arranged facing away from each other.

[0132] In this embodiment, when the main antenna unit operates in the low - frequency state, the corresponding operating wavelength is λ1, and the first body 130 and the second body 140 are in the unfolded state, the mode is a quarter - wave IFA mode from the slot to the ground end, that is, the lengths of the main antenna arm 111 and the parasitic antenna arm 121 are both λ1 / 4, and the distance between the first ground end 112 and the second ground end 122 is (nλ1) / 2, where λ1 is the operating wavelength of the main antenna unit when operating in the low - frequency state;

[0133] When the main antenna unit operates in the high-frequency state and the first body 130 and the second body 140 are in the unfolded state, the distance between the first ground return end 112 and the second ground return end 122 is (nλ1) / 2, where λ1 is the operating wavelength of the main antenna unit in the low-frequency state; the distance between the feeding end 114 and the first frequency adjustment component 123 of the parasitic antenna unit is (nλ2) / 2; the mode is a quarter monopole mode from the slot to the feeding end, that is, the distance between the first slot 161 and the feeding end 114 is λ2 / 4, and the distance between the second slot 162 and the first frequency adjustment component 123 is λ2 / 4; where λ2 is the operating wavelength of the main antenna unit in the high-frequency state.

[0134] Of course, in other embodiments, when the main antenna unit operates in the high-frequency state and the first body 130 and the second body 140 are in the unfolded state, a quarter IFA mode can also be excited, which is not limited in this application.

[0135] In some embodiments, when n is an even number, in the unfolded state, the current directions of the main antenna unit and the parasitic antenna unit are the same, as Figure 7 shown, which improves the antenna radiation efficiency of the main antenna unit in the unfolded state.

[0136] In other embodiments, when n is an odd number, in the unfolded state, the current directions of the main antenna unit and the parasitic antenna unit are opposite, as Figure 6 shown; while in the folded state, the current directions of the main antenna unit and the parasitic antenna unit are the same, and the ground current excitation is used to weaken the reverse current intensity caused by the spatial coupling excitation, so as to improve the antenna radiation efficiency of the main antenna unit in the folded state.

[0137] According to the antenna module of the embodiment of the present application, in the high-frequency mode, by setting the distance between the feeding end 114 and the first frequency adjustment component 123 of the parasitic antenna unit to be (nλ2) / 2, and setting the distance between the first slot 161 and the feeding end 114 to be λ2 / 4, and setting the distance between the second slot 162 and the first frequency adjustment component 123 to be λ2 / 4, when n is an even number, the currents in the main antenna unit and the parasitic antenna unit are in the same direction in the unfolded state, and when n is an odd number, the currents in the main antenna unit and the parasitic antenna unit are in the same direction in the folded state, so as to improve the radiation efficiency of the antenna in the unfolded state or the folded state by controlling the low current excitation.

[0138] The electronic device provided by the present application will be described below.

[0139] The electronic device can be a mobile electronic device, such as a mobile phone, a tablet computer, a watch, a vehicle-mounted terminal, and a wearable intelligent terminal; or it can also be a non-mobile electronic device, such as a PC.

[0140] An electronic device according to some embodiments of the present application includes: a first body, a second body, and an antenna module as described in any of the above embodiments.

[0141] Wherein, the first body and the second body are connected by a connecting component, and the first body and the second body are switchable between an unfolded state and a folded state.

[0142] The antenna module is disposed on the first body and the second body.

[0143] According to an embodiment of the present application, by integrating an antenna module in an electronic device and setting the distance between the main antenna unit and the parasitic antenna unit in the antenna module to (nλ) / 2, the parity of n is selected based on actual needs, so as to adjust the direction of the current in the main antenna unit and the parasitic antenna unit in the unfolded state based on actual needs, thereby selectively improving the antenna radiation efficiency of the main antenna unit in the unfolded state or the antenna radiation efficiency of the main antenna unit in the folded state of the electronic device. It has high flexibility and usability, and the hardware structure is simple without adding additional components, and has a low design cost.

[0144] In some embodiments, with continued reference to Figure 5 , the electronic device may further include a decorative ring 190, wherein the decorative ring 190 is disposed on one surface of the first body 130.

[0145] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0146] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An antenna module, characterized in that, Comprising: A main antenna unit, which is disposed on a first body of the electronic device; A parasitic antenna unit, which is disposed on a second body of the electronic device, and the parasitic antenna unit and the main antenna unit are disposed at the same end. The first body and the second body are connected by a connecting component, and the first body and the second body are switchable between an unfolded state and a folded state; When the first body and the second body are in the unfolded state, the shortest distance between one end of the main antenna unit close to the connecting component and one end of the parasitic antenna unit close to the connecting component is (nλ) / 2; where λ is the target operating wavelength of the main antenna unit, n>0 and n is odd or even.

2. The antenna module according to claim 1, wherein The main antenna unit includes a feeding end and a main antenna arm. One end of the feeding end is connected to the main antenna arm, and the other end of the feeding end is grounded. The parasitic antenna unit includes a parasitic antenna arm, and the lengths of the main antenna arm and the parasitic antenna arm are equal.

3. The antenna module according to claim 2, wherein When n is even and the first body and the second body are in the unfolded state, the main antenna unit and the parasitic antenna unit are arranged in the same direction or facing away from each other.

4. The antenna module according to claim 3, characterized in that, The main antenna unit is provided with a first slit, and the parasitic antenna unit is provided with a second slit; The first slit is disposed at one end of the main antenna arm, and the distance from the first slit of the main antenna unit to the first grounding end of the main antenna unit is λ / 4; The second slit is disposed at one end of the parasitic antenna arm, and the distance from the second slit of the parasitic antenna unit to the second grounding end of the parasitic antenna unit is λ / 4; Or, The first slit is disposed in the middle of the main antenna arm; the second slit is disposed in the middle of the parasitic antenna arm.

5. The antenna module according to claim 2, wherein When n is odd and the first body and the second body are in the unfolded state, the main antenna unit and the parasitic antenna unit are arranged facing away from each other.

6. The antenna module according to claim 2, wherein The parasitic antenna unit includes: a first frequency adjustment component, which is disposed on the parasitic antenna arm.

7. The antenna module according to claim 6, wherein When the main antenna unit operates in a low-frequency state and the first body and the second body are in the unfolded state, the target operating wavelength is the operating wavelength of the main antenna unit in the low-frequency state; When the main antenna unit operates in a high-frequency state and the first body and the second body are in the unfolded state, the target operating wavelength is the operating wavelength of the main antenna unit in the low-frequency state, and the distance between the feeding end and the first frequency adjustment component is (nλ2) / 2; where λ2 is the operating wavelength of the main antenna unit in the high-frequency state.

8. The antenna module according to claim 7, wherein The main antenna unit is provided with a first slit, and the parasitic antenna unit is provided with a second slit. The first slit is disposed at one end of the main antenna unit, the second slit is disposed at one end of the parasitic antenna unit, and the main antenna unit and the parasitic antenna unit are arranged facing away from each other in the unfolded state; When the main antenna unit operates in the low-frequency state and the first body and the second body are in the unfolded state, both the length of the main antenna arm and the length of the parasitic antenna arm are λ1 / 4; where λ1 is the operating wavelength of the main antenna unit in the low-frequency state. When the main antenna unit operates in the high-frequency state and the first body and the second body are in the unfolded state, the distance between the first slot and the feeding end is λ2 / 4, and the distance between the second slot and the first frequency adjustment component is λ2 / 4.

9. The antenna module according to claim 6, wherein The main antenna unit includes: A second frequency adjustment component, which is arranged on the main antenna arm; A radio frequency circuit, which is electrically connected to the main antenna arm through the second frequency adjustment component.

10. An electronic device, characterized in that, It includes: A first body; A second body; The antenna module according to any one of claims 1-9, wherein the antenna module is arranged on the first body and the second body.

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