terminal device

Abstract

The present disclosure provides a terminal device, and relates to the field of communication. The terminal device comprises a middle frame body, a floating conductor and a frame antenna. The frame antenna comprises a first antenna and a second antenna. A gap is arranged between the first antenna and the second antenna. An interface device is arranged in the gap. The floating conductor is located inside the frame antenna and opposite to the gap. The floating conductor has opposite first and second ends. The first end of the floating conductor is coupled with the first antenna. The second end of the floating conductor is coupled with the second antenna. The floating conductor changes the equivalent circuit between the first antenna and the second antenna. An electromagnetic field with an opposite phase to the original coupling electromagnetic field is added between the first antenna and the second antenna. The two coupling electromagnetic fields can offset each other. The influence of the interface device on the coupling electromagnetic field is reduced. The isolation of the first antenna and the second antenna is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication, and in particular, to a terminal device. BACKGROUND

[0002] With the progress and development of communication technology, mobile phones need to support more and more frequency bands, so that multiple antennas need to be arranged inside the mobile phone to adapt to multiple use scenarios through multiple antennas supporting different frequency bands. However, due to the space limitation inside the mobile phone, multiple antennas in the mobile phone need to be arranged compactly, and there is mutual electromagnetic interference between the antennas. Moreover, various electronic components are also arranged inside the mobile phone, and the complex environment in which the multiple antennas are located makes the coupling phenomenon between adjacent antennas more serious, affecting the radiation performance of the multiple antennas of the mobile phone. SUMMARY

[0003] In view of this, the present disclosure provides a terminal device, which can improve the isolation between antennas.

[0004] Specifically, the technical scheme comprises the following:

[0005] In a first aspect, the present disclosure provides a terminal device, comprising:

[0006] a middle frame body and a frame antenna;

[0007] The frame antenna comprises a first antenna and a second antenna, and a gap is arranged between the first antenna and the second antenna, and an interface device is arranged in the gap.

[0008] A floating conductor is arranged inside the frame antenna and opposite to the gap, the floating conductor has opposite first and second ends, the first end of the floating conductor is coupled to the first antenna, and the second end of the floating conductor is coupled to the second antenna.

[0009] Optionally, the interface device is a USB interface, one end of the interface device is arranged inside the frame antenna and connected to the floating conductor.

[0010] Optionally, the first and second ends of the floating conductor are respectively provided with first connecting portions, and the interface device is provided with a second connecting portion, and the first connecting portions are connected to the second connecting portion.

[0011] Optionally, the first antenna is provided with a first protruding portion, the first protruding portion is close to the gap, and the first protruding portion is located on the side of the first antenna close to the floating conductor.

[0012] Optionally, a distance between the first end of the floating conductor and the first protrusion is 0.05λ0-0.1λ0, where λ0 is a wavelength of an electromagnetic field radiated when the first antenna and the second antenna are coupled.

[0013] Optionally, the first antenna is provided with a first recess, and the first recess is located on a side of the first antenna opposite to the first protrusion.

[0014] Optionally, the second antenna is provided with a second protrusion, and the second protrusion is located on a side of the second antenna close to the floating conductor.

[0015] Optionally, a distance between the second end of the floating conductor and the second protrusion is 0.05λ0-0.1λ0, where λ0 is a wavelength of an electromagnetic field radiated when the first antenna and the second antenna are coupled.

[0016] Optionally, the second antenna is provided with a third protrusion, and the second protrusion is located between the gap and the third protrusion, and the third protrusion is located on a side of the second antenna close to the floating conductor.

[0017] Optionally, the second antenna is provided with a second recess, and the second recess is located on a side of the second antenna opposite to the third protrusion.

[0018] Optionally, a length of the floating conductor is 0.25λ0-0.4λ0, where λ0 is a wavelength of an electromagnetic field radiated when the first antenna and the second antenna are coupled.

[0019] Optionally, the middle frame body includes a bottom plate, and a side of the bottom plate close to the gap has a receiving groove, and the floating conductor is located in the receiving groove and is spaced apart from an inner wall of the receiving groove.

[0020] The technical scheme provided by the embodiments of the present disclosure has at least the following beneficial effects:

[0021] The terminal device provided by the embodiments of the present disclosure is provided with a floating conductor in the middle frame body of the terminal device, and the floating conductor is opposite to the gap between the first antenna and the second antenna, and the opposite ends of the floating conductor are close to the first antenna and the second antenna respectively, so that the equivalent capacitances between the first antenna and the second antenna can be formed respectively, and the floating conductor itself serves as an inductor. The interface device is arranged in the gap between the first antenna and the second antenna, and the floating conductor is equivalent to two capacitors and inductors connected in parallel to the equivalent capacitance between the first antenna and the second antenna, that is, the equivalent circuit between the first antenna and the second antenna is changed, and the coupling electromagnetic field opposite in phase to the original coupling electromagnetic field is added between the first antenna and the second antenna, the two coupling electromagnetic fields can offset each other, the influence of the interface device on the coupling electromagnetic field is reduced, and the isolation degree of the first antenna and the second antenna is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 The partial schematic view of the terminal device provided by the embodiments of the present disclosure is shown in the figure.

[0024] Figure 2 The schematic view of the middle frame body of the terminal device provided by the embodiments of the present disclosure is shown in the figure.

[0025] Figure 3 The partial schematic view of the terminal device provided by the embodiments of the present disclosure is shown in the figure.

[0026] Figure 4 The partial equivalent circuit diagram of the terminal device provided by the embodiments of the present disclosure is shown in the figure.

[0027] The reference signs in the figure respectively represent:

[0028] 1-First antenna; 2-Second antenna; 3-Floating conductor; 4-Middle frame body; 5-Interface device;

[0029] 10-Gap; 11-First protruding part; 12-First recess; 21-Second protruding part; 22-Second recess; 23-Third protruding part; 31-First connecting part; 41-Base plate; 42-Frame body; 51-Second connecting part;

[0030] 301-First end; 302-Second end; 410-Containing groove.

[0031] The specific embodiments of the present disclosure have been shown in the above drawings, and will be described in more detail hereinafter. These drawings and descriptions are not intended to limit the scope of the present disclosure concept in any way, but to illustrate the present disclosure concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present disclosure.

[0033] The present disclosure provides a terminal device, Figure 1 A partial schematic diagram of a terminal device is provided in the embodiments of the present disclosure. The terminal device includes a middle frame body 4, a floating conductor 3, and a frame antenna, the frame antenna includes a first antenna 1 and a second antenna 2, a gap 10 is arranged between the first antenna 1 and the second antenna 2, an interface device 5 is arranged in the gap 10, the floating conductor 3 is located inside the frame antenna and opposite to the gap 10, the floating conductor 3 has opposite first and second ends 301 and 302, the first end 301 of the floating conductor 3 is coupled to the first antenna 1, and the second end 302 of the floating conductor 3 is coupled to the second antenna 2.

[0034] In the terminal device provided in the embodiments of the present disclosure, the floating conductor 3 is arranged in the middle frame body 4 of the terminal device, and the floating conductor 3 is opposite to the gap 10 between the first antenna 1 and the second antenna 2, the opposite ends of the floating conductor 3 are close to the first antenna 1 and the second antenna 2 respectively, so as to form equivalent capacitances between the floating conductor 3 and the first antenna 1 and the second antenna 2 respectively, and the floating conductor 3 between the first end 301 and the second end 302 is used as an inductor. The interface device 5 is arranged in the gap 10 between the first antenna 1 and the second antenna 2, the floating conductor 3 is equivalent to two capacitors and an inductor connected in parallel to the equivalent capacitance between the first antenna 1 and the second antenna 2, that is, the equivalent circuit between the first antenna 1 and the second antenna 2 is changed, so as to increase the coupling electromagnetic field opposite in phase to the original coupling electromagnetic field between the first antenna 1 and the second antenna 2, the two coupling electromagnetic fields can offset each other, the influence of the interface device 5 on the coupling electromagnetic field is reduced, and the isolation degree of the first antenna 1 and the second antenna 2 is improved.

[0035] In order to make the technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in further detail below with reference to the drawings.

[0036] As Figure 1As shown, the terminal device provided by the embodiment of the present disclosure comprises a middle frame body 4 and a floating conductor 3, and the floating conductor 3 is located in the middle frame body 4. The middle frame body 4 is provided with a gap 10, and the gap 10 is provided with an interface device 5. The gap 10 is used to divide the first antenna 1 and the second antenna 2 on the middle frame body 4, and the floating conductor 3 is opposite to the gap 10. The floating conductor 3 has opposite first and second ends 301 and 302. The first end 301 of the floating conductor 3 is close to the first antenna 1, the second end 302 of the floating conductor 3 is close to the second antenna 2, and the floating conductor 3 is spaced apart from the first antenna 1 and the second antenna 2, respectively.

[0037] For example, the material of the floating conductor 3 is metal, such as copper, silver, nickel or an alloy formed by copper, silver and nickel.

[0038] It should be noted that any one of the first antenna 1 and the second antenna 2 can be a monopole antenna, an IFA antenna, a T antenna, etc., which is not limited in the embodiment of the present disclosure.

[0039] In some embodiments of the present disclosure, as shown in Figure 1 The first antenna 1 is provided with a first protrusion 11, the first protrusion 11 is close to the gap 10, and the first protrusion 11 is located on the side of the first antenna 1 close to the floating conductor 3. The first protrusion 11 is used to adjust the distance between the first antenna 1 and the first end 301 of the floating conductor 3, and adjust the area of the opposite part of the floating conductor 3, so as to adjust the value of the equivalent capacitance between the first antenna 1 and the floating conductor 3, so as to change the phase and amplitude of the coupled electromagnetic field formed by the first antenna 1 and the second antenna 2 through the floating conductor 3.

[0040] In some embodiments of the present disclosure, as shown in Figure 1 The second antenna 2 is provided with a second protrusion 21, the second protrusion 21 is close to the gap 10, and the second protrusion 21 is located on the side of the second antenna 2 close to the floating conductor 3. The second protrusion 21 is used to adjust the distance between the second antenna 2 and the second end 302 of the floating conductor 3, and adjust the area of the opposite part of the floating conductor 3, so as to adjust the value of the equivalent capacitance between the second antenna 2 and the floating conductor 3, so as to change the phase and amplitude of the coupled electromagnetic field formed by the second antenna 2 and the first antenna 1 through the floating conductor 3.

[0041] Figure 2 A schematic view of the middle frame body 4 of the terminal device provided by the embodiment of the present disclosure is shown in Figure 2 As shown, because there is a gap 10 between the first antenna 1 and the second antenna 2, an equivalent capacitance C 12So that the first antenna 1 and the second antenna 2 generate a larger coupling electromagnetic field between each other when working at a certain frequency, and the isolation between the first antenna 1 and the second antenna 2 is reduced.

[0042] In some embodiments of the present disclosure, referring to Figure 2 The middle frame body 4 includes a bottom plate 41 and a frame 42, the frame 42 is arranged around the edge of the bottom plate 41 and connected with the bottom plate 41. The side of the bottom plate 41 close to the gap 10 has a receiving groove 410 for receiving the floating conductor 3 and making the floating conductor 3 opposite to the gap 10. The first antenna 1 and the second antenna 2 are arranged on the frame 42. For example, the frame 42 is rectangular, and the first antenna 1 and the second antenna 2 are arranged on the longer side of the frame 42, or the first antenna 1 and the second antenna 2 are arranged on two adjacent sides of the frame 42 respectively.

[0043] Figure 3 A partial schematic diagram of a terminal device provided by an embodiment of the present disclosure is shown. In some embodiments of the present disclosure, as shown in Figure 3 The interface device 5 is a USB interface, one end of the interface device 5 is arranged inside the frame antenna and connected with the floating conductor 3, and the end of the interface device 5 close to the bottom plate 41 is provided with a pin and connected with a circuit board in the terminal device, so as to fix the position of the floating conductor 3 relative to the middle frame body 4. In some embodiments, the first antenna 1, the second antenna 2 and the floating conductor 3 are arranged at the lower edge of the terminal device, and the interface device 5 is used to connect other parts in the terminal device or connect the terminal device with other devices.

[0044] In some embodiments of the present disclosure, as shown in Figure 3 The positions close to the first end 301 and the second end 302 of the floating conductor 3 are respectively provided with a first connecting part 31, and the interface device 5 is provided with two second connecting parts 51, and the two first connecting parts 31 are respectively connected with the two second connecting parts 51.

[0045] For example, the first connecting part 31 is a screw, the second connecting part 51 is a threaded hole, and the first connecting part 31 and the second connecting part 51 are connected by screwing. Or the first connecting part 31 and the second connecting part 51 are welded. For example, the interface device 5 can be a USB Type-c, a USB Type-A or the like.

[0046] In some embodiments of the present disclosure, as shown in Figure 3As shown, the first antenna 1 is provided with a first recess 12, which is located on the side of the first antenna 1 opposite to the first protrusion 11. The first recess 12 is used to reduce the width of the first antenna 1 at the position where the first protrusion 11 is provided, so as to adjust the current distribution on the first antenna 1. Moreover, the first protrusion 11 and the first recess 12 increase the length of the first antenna 1, so as to adjust the radiation frequency range of the first antenna 1.

[0047] In some embodiments of the present disclosure, as shown in Figure 3 As shown, the second antenna 2 is provided with a third protrusion 23, the second protrusion 21 is located between the gap 10 and the third protrusion 23, and the third protrusion 23 is located on the side of the second antenna 2 close to the floating conductor 3. The third protrusion 23 increases the local width of the second antenna 2, so as to adjust the current distribution on the second antenna 2.

[0048] Optionally, as shown in Figure 3 The second antenna 2 is provided with a second recess 22, which is located on the side of the second antenna 2 opposite to the third protrusion 23. The second recess 22 and the third protrusion 23 increase the length of the first antenna 2, so as to adjust the radiation frequency range of the second antenna 2.

[0049] As shown in Figure 3 As shown, the first end 301 of the floating conductor 3 close to the edge of the first antenna 1 is arc-shaped, the first protrusion 11 close to the edge of the floating conductor 3 is arc-shaped, and the arc shape of the edge of the first protrusion 11 is parallel to the arc shape of the edge of the first antenna 1, so as to adjust the distance and the relative surface area between the first protrusion 11 and the floating conductor 3, and to adjust the value of the equivalent capacitance formed between the first protrusion 11 and the floating conductor 3.

[0050] Similarly, the second end 302 of the floating conductor 3 close to the edge of the second antenna 2 is arc-shaped, the second protrusion 21 close to the edge of the floating conductor 3 is arc-shaped, and the structure is similar to that of the first end 301 of the floating conductor 3 and the first protrusion 11 of the first antenna 1, so as to adjust the distance and the relative surface area between the second protrusion 21 and the floating conductor 3, and to adjust the value of the equivalent capacitance formed between the second protrusion 21 and the floating conductor 3.

[0051] In other embodiments, the first end 301 of the floating conductor 3 close to the edge of the first antenna 1 is straight, the end of the first protrusion 11 is straight, and the end of the first protrusion 11 is opposite to the first end 301 of the floating conductor 3 and at least partially parallel to each other; the second end 302 of the floating conductor 3 close to the edge of the second antenna 2 is straight, the end of the second protrusion 21 is straight, and the end of the second protrusion 21 is opposite to the second end 302 of the floating conductor 3 and at least partially parallel to each other.

[0052] It should be noted that the shapes of the floating conductor 3, the first antenna 1 and the second antenna 2 can be changed according to the coupling electromagnetic field to be generated, so as to generate another coupling electromagnetic field which is opposite in phase to the coupling electromagnetic field between the first antenna 1 and the second antenna 2 when the floating conductor 3 is not arranged.

[0053] In some embodiments of the present disclosure, the distance between the first end 301 of the floating conductor 3 and the first protrusion 11 is 0.05λ0-0.1λ0, where λ0is the wavelength of the electromagnetic field radiated when the first antenna 1 and the second antenna 2 are coupled. For example, when the frequency of the electromagnetic field radiated when the first antenna 1 and the second antenna 2 are coupled is 3GHz, λ0is 10mm, and the distance between the first end 301 of the floating conductor 3 and the first protrusion 11 is 0.5mm-1mm.

[0054] In some embodiments of the present disclosure, the distance between the second end 302 of the floating conductor 3 and the second protrusion 21 is 0.05λ0-0.1λ0, where λ0is the wavelength of the electromagnetic field radiated when the first antenna 1 and the second antenna 2 are coupled. For example, when the frequency of the electromagnetic field radiated when the first antenna 1 and the second antenna 2 are coupled is 6GHz, λ0is 5mm, and the distance between the second end 302 of the floating conductor 3 and the second protrusion 21 is 0.25mm-0.5mm.

[0055] It should be noted that the electromagnetic field radiated when the first antenna 1 and the second antenna 2 are coupled refers to the coupling electromagnetic field between the first antenna 1 and the second antenna 2 when the floating conductor 3 is not arranged, and the wavelength of the coupling electromagnetic field depends on the structures, arrangement modes and respective radiation frequency bands of the first antenna 1 and the second antenna 2. 12 The coupling electromagnetic field generated when the first antenna 1 and the second antenna 2 are coupled, and the wavelength of the coupling electromagnetic field depends on the structures, arrangement modes and respective radiation frequency bands of the first antenna 1 and the second antenna 2.

[0056] For example, when the radiation frequency bands of the first antenna 1 and the second antenna 2 are 1.8GHz-2.6GHz, and the wavelength λ0of the coupling electromagnetic field between the first antenna 1 and the second antenna 2 when the floating conductor 3 is not arranged is 15mm, the distance between the first end 301 of the floating conductor 3 and the first protrusion 11 is 0.75mm-1.5mm, and the distance between the second end 302 of the floating conductor 3 and the second protrusion 21 is 0.75mm-1.5mm.

[0057] In some embodiments of the present disclosure, as shown in Figure 3 The floating conductor 3 is arranged in the accommodating groove 410 and is spaced apart from the inner wall of the accommodating groove 410. The distance between the floating conductor 3 and the inner wall of the accommodating groove 410 is large, so as to avoid the generation of induced current between the bottom plate 41 and the floating conductor 3. The floating conductor 3 is not in direct contact with the middle frame body 4, so as to avoid the influence of the electrical connection between other devices arranged in the middle frame body 4 and the floating conductor 3 on the coupling circuit formed by the floating conductor 3, the first antenna 1 and the second antenna 2.

[0058] Figure 4 A partial equivalent circuit diagram of a terminal device provided in an embodiment of this disclosure. For example... Figure 4 As shown, the equivalent circuit between the first antenna 1 and the second antenna 2 includes capacitor C. 12 and with capacitor C 12 parallel capacitor C 13 Inductor L3 and capacitor C 23 Among them, capacitor C 12 Capacitor C is used to generate the first electromagnetic field. 13 Inductor L3 and capacitor C 23 Used to generate a second electromagnetic field, wherein the phase of the first electromagnetic field is opposite to the phase of the second electromagnetic field. Capacitor C 12 The value of L3 is determined based on the distance between the opposite ends of the first antenna 1 and the second antenna 2 and the overlapping area; the value of inductance L3 is determined based on the length of the levitation conductor 3; and the value of capacitance C is determined based on the length of the levitation conductor 3. 13 The value of capacitance C is determined based on the shape of the first end 301 of the levitation conductor 3 and the first antenna 1, as well as the distance between the first end 301 and the first antenna 1. 23 The value is determined based on the shape of the second end 302 of the levitation conductor 3 and the second antenna 2, as well as the distance between the second end 302 and the second antenna 2. Since the first electromagnetic field can cancel out the second electromagnetic field, the isolation between the first antenna 1 and the second antenna 2 can be effectively improved.

[0059] Optionally, the length of the levitation conductor 3 is 0.25λ0 to 0.4λ0, where λ0 is the wavelength of the electromagnetic field radiated when the first antenna 1 and the second antenna 2 are coupled.

[0060] For example, if the frequency of the electromagnetic field radiated when the first antenna 1 and the second antenna 2 are coupled is 6 GHz without the suspension conductor 3, then the wavelength λ0 of the electromagnetic field is 20 mm, and the length of the suspension conductor 3 is 5 mm to 8 mm.

[0061] It should be noted that the terminal device provided in this disclosure embodiment may be, but is not limited to, a smartphone, tablet computer, MP3 player (Moving Picture Experts Group Audio Layer III), MP4 player (Moving Picture Experts Group Audio Layer IV), or laptop computer. This electronic device may also be referred to as a user device, portable terminal, laptop terminal, or other names.

[0062] It should be noted that, in the present document, "several", "at least one", means one or more, "multiple", "at least two", means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents an "or" relationship between the front and rear associated objects.

[0063] In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection; can be direct connection, can also be indirect connection through intermediate medium; can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0064] In the present disclosure, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0065] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0066] In the description of the present specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the described embodiments or examples are included in at least one embodiment or example of the present disclosure.

[0067] The above merely provides an example of the present disclosure, and is not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A terminal device, characterized in that, include: The mid-frame body (4) and the frame antenna; The frame antenna includes a first antenna (1) and a second antenna (2), and a gap (10) is provided between the first antenna (1) and the second antenna (2), and an interface device (5) is provided in the gap (10). A levitation conductor (3) is located inside the frame antenna and opposite to the gap (10). The levitation conductor (3) has a first end (301) and a second end (302) opposite to each other. The first end (301) of the levitation conductor (3) is coupled to the first antenna (1), and the second end (302) of the levitation conductor (3) is coupled to the second antenna (2).

2. The terminal device according to claim 1, characterized in that, The interface device (5) is a USB interface. One end of the interface device (5) is located inside the frame antenna and is connected to the floating conductor (3).

3. The terminal device according to claim 2, characterized in that, The first end (301) and the second end (302) of the suspended conductor (3) are respectively provided with a first connecting part (31), and the interface device (5) is provided with a second connecting part (51). The first connecting part (31) is connected to the second connecting part (51).

4. The terminal device according to claim 1, characterized in that, The first antenna (1) is provided with a first protrusion (11), which is close to the gap (10) and is located on the side of the first antenna (1) close to the levitation conductor (3).

5. The terminal device according to claim 4, characterized in that, The distance between the first end (301) of the suspended conductor (3) and the first protrusion (11) is 0.05λ0~0.1λ0, where λ0 is the wavelength of the electromagnetic field radiated when the first antenna (1) and the second antenna (2) are coupled.

6. The terminal device according to claim 4, characterized in that, The first antenna (1) is provided with a first groove (12), which is located on the side of the first antenna (1) opposite to the first protrusion (11).

7. The terminal device according to claim 1, characterized in that, The second antenna (2) is provided with a second protrusion (21), which is close to the gap (10) and is located on the side of the second antenna (2) close to the levitation conductor (3).

8. The terminal device according to claim 7, characterized in that, The distance between the second end (302) of the suspended conductor (3) and the second protrusion (21) is 0.05λ0~0.1λ0, where λ0 is the wavelength of the electromagnetic field radiated when the first antenna (1) and the second antenna (2) are coupled.

9. The terminal device according to claim 7, characterized in that, The second antenna (2) is provided with a third protrusion (23), the second protrusion (21) is located between the gap (10) and the third protrusion (23), and the third protrusion (23) is located on the side of the second antenna (2) closer to the levitation conductor (3).

10. The terminal device according to claim 9, characterized in that, The second antenna (2) is provided with a second groove (22), which is located on the side of the second antenna (2) opposite to the third protrusion (23).

11. The terminal device according to any one of claims 1 to 10, characterized in that, The length of the suspended conductor (3) is 0.25λ0~0.4λ0, where λ0 is the wavelength of the electromagnetic field radiated when the first antenna (1) and the second antenna (2) are coupled.

12. The terminal device according to any one of claims 1 to 10, characterized in that, The middle frame body (4) includes a base plate (41), and the base plate (41) has a receiving groove (410) on the side near the gap (10). The suspended conductor (3) is located in the receiving groove (410) and is spaced apart from the inner wall of the receiving groove (410).

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