CN118783083A

CN118783083A - Terminal equipment

Info

Publication number: CN118783083A
Application number: CN202310354896.2A
Authority: CN
Inventors: 王伟; 梁沛宇
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2024-10-15
Also published as: EP4443646A1

Abstract

The disclosure provides a terminal device, and relates to the field of communication. The terminal device comprises: a rotating shaft portion; a first body connected to one side of the rotation shaft portion; a second body connected to the other side of the rotation shaft portion, the first body and the second body being capable of being opened and closed by the rotation shaft portion; a first antenna and a second antenna located on the first body; a third antenna and a fourth antenna positioned on the second body; the first antenna, the second antenna, the third antenna and the fourth antenna have the same radiation frequency band. The four antennas in the terminal equipment have the same radiation frequency band, which is beneficial to improving the signal intensity of the terminal equipment in a specific frequency band. Two antennas are located on the first main body, and the other two antennas are located on the second main body, so that isolation between the antennas can be improved under the state that the shell is unfolded or folded, and signal quality of the terminal equipment is improved.

Description

Terminal equipment

Technical Field

The present disclosure relates to the field of communications, and in particular, to a terminal device.

Background

As 5G (The 5th Generation Mobile Communication Technology, fifth generation mobile communication technology) networks become more popular, the user's 5G signal experience with electronic devices is also becoming more and more important. The attenuation of the low-frequency signal along with the distance is smaller, and the user low-frequency signal experience can be improved by increasing the number of the low-frequency antennas of the mobile terminal. However, more devices are disposed in the foldable electronic device, and the internal space of the foldable electronic device is limited, so that it is difficult to dispose a plurality of low frequency antennas. In the folded state of the electronic equipment, the antenna is affected by the approach metal, so that the performance of the antenna is affected, and the signal of the electronic equipment is reduced.

Disclosure of Invention

In view of this, the present disclosure provides a terminal device, which can improve signal strength of the terminal device.

Specifically, the method comprises the following technical scheme:

There is provided a terminal device comprising:

A rotating shaft portion;

A first main body connected to one side of the rotation shaft portion;

a second body connected to the other side of the rotation shaft portion, the first body and the second body being capable of being opened and closed by the rotation shaft portion;

A first antenna and a second antenna located on the first body;

a third antenna and a fourth antenna located on the second body;

The first antenna, the second antenna, the third antenna and the fourth antenna have the same radiation frequency band.

Optionally, the first antenna and the third antenna are symmetrically arranged about the shaft portion;

the second antenna and the fourth antenna are symmetrically arranged about the rotation shaft portion.

Optionally, the first antenna and the second antenna are respectively positioned at two corners of the first main body away from the rotating shaft part,

The third antenna and the fourth antenna are respectively located at two corners of the second main body far away from the rotating shaft part.

Optionally, the terminal device is configured such that, when the first body and the second body are closed, a current direction of the second antenna is opposite to a current direction of the fourth antenna;

when the first body and the second body are unfolded, the current direction of the second antenna is the same as the current direction of the fourth antenna.

Optionally, the second antenna is a T-antenna, and has a first tuning point, a second tuning point and a first feeding point, where the first feeding point is located between the first tuning point and the second tuning point;

The first main body comprises a first switch, a second switch, a first tuning circuit and a second tuning circuit, wherein the first switch is connected with the first tuning point and the first tuning circuit, and the second switch is connected with the second tuning point and the second tuning circuit.

Optionally, the fourth antenna is a T-antenna, and the fourth antenna has a second feeding point, where the second feeding point is located at a side of the second body away from the rotating shaft portion.

Optionally, the terminal device is configured such that the current direction of the first antenna is opposite to the current direction of the third antenna.

Optionally, the first antenna is an inverted-F antenna, and includes an antenna main body and a rib position, the antenna main body has a third feeding point, the third feeding point is located the first main body is far away from one side of the rotating shaft portion, the rib position is located the first main body is close to one side of the rotating shaft portion, and the rib position is connected with the antenna main body and the first main body respectively.

Optionally, the third antenna is a T-antenna, and the third antenna has a fourth feeding point, and the fourth feeding point is located at a side of the second body away from the rotating shaft portion.

Optionally, the terminal device further includes a transmission line, a radio frequency module, a plurality of first power lines, a plurality of second power lines, the radio frequency module is located in the first main body, the transmission line is located in the rotating shaft portion, two ends of the first power lines are respectively connected with the radio frequency module and one end of the transmission line, one end of the second power line is connected with the other end of the transmission line, and the other end of the second power line is connected with the third antenna or the fourth antenna.

The technical scheme provided by the embodiment of the disclosure at least comprises the following beneficial effects:

In the terminal equipment provided by the embodiment of the disclosure, four antennas are arranged on the foldable terminal equipment, and the four antennas have the same radiation frequency band, so that the signal intensity of the terminal equipment in a specific frequency band is improved. Two antennas are located on the first main body, the other two antennas are located on the second main body, isolation between the four antennas can be improved under the state that the first main body and the second main body are unfolded or folded, and signal quality of terminal equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a second antenna of a terminal device according to an embodiment of the disclosure;

fig. 3 is a schematic diagram of a current direction of a terminal device in an extended state according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a current direction of a terminal device in a folded state according to an embodiment of the present disclosure.

Reference numerals in the drawings are respectively expressed as:

1-a housing; 11-a first body; 111-a first side; 112-a second side; 113-a third side; 12-rotating shaft part; 13-a second body; 131-fourth side; 132-fifth side; 133-sixth side; 10-first fracture; 20-second fracture; 30-third fracture; 40-fourth fracture; 50-fifth break; 60-sixth break; 70-seventh break; 80-eighth break; 401-a first tuning point; 403-a first feed point; 402-a second tuning point;

2-a main board; 21-a transmission line; 22-a radio frequency module; 23-a first feeder; 24-a second feeder; 25-a third feeder; 26-fourth feeder;

3-a first antenna; 301-an antenna body; 302-tendon position; 31-a third feed point; 32-a third tuning point; 4-a second antenna; 41-a first switch; 42-a second switch; 43-a first tuning circuit; 44-a second tuning circuit; 5-a third antenna; 51-fourth feed point; 6-fourth antenna; 61-second feeding point.

Specific embodiments of the present disclosure have been shown by way of the above drawings and will be described in more detail below. These drawings and the written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the present disclosure, but not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

Fig. 1 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. As shown in fig. 1, the terminal device includes:

A rotation shaft portion 12;

A first main body 11 connected to one side of the rotation shaft 12;

a second body 13 connected to the other side of the rotation shaft portion 12, the first body 11 and the second body 13 being capable of being opened and closed by the rotation shaft portion 12;

a first antenna 3 and a second antenna 4 located on the first body 11;

a third antenna 5 and a fourth antenna 6 located on the second body 13;

wherein the first antenna 3, the second antenna 4, the third antenna 5 and the fourth antenna 6 have the same radiation frequency band.

In the terminal equipment provided by the embodiment of the disclosure, four antennas are arranged on the foldable terminal equipment, and the four antennas have the same radiation frequency band, so that the signal intensity of the terminal equipment in a specific frequency band is improved. The first antenna 3 and the second antenna 4 are located on the first main body 11, the third antenna 5 and the fourth antenna 6 are located on the second main body 13, so that isolation between the four antennas can be improved under the state that the first main body 11 and the second main body 13 are unfolded or folded, and signal quality of terminal equipment is improved.

In order to make the technical scheme and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1, the terminal device provided in the embodiment of the present disclosure includes a first body 11, a rotating shaft portion 12 and a second body 13, where the rotating shaft portion 12 is located between the first body 11 and the second body 13 and is connected to the first body 11 and the second body 13, respectively, and the rotating shaft portion 12 can rotate to drive the first body 11 and the second body 13 to be opened or closed.

Referring to fig. 1, the terminal device further includes a first antenna 3, a second antenna 4, a third antenna 5, and a fourth antenna 6. Wherein the first antenna 3 and the second antenna 4 are located on the first body 11, and the third antenna 5 and the fourth antenna 6 are located on the second body 13.

Illustratively, the rims of the first body 11 and the second body 13 are conductors, and a plurality of breaks are provided on the first body 11 and the second body 13, the breaks separate the positions of the first antenna 3 and the second antenna 4 on the rim of the first body 11, and the breaks separate the positions of the third antenna 5 and the fourth antenna 6 on the rim of the second body 13. The first antenna 3, the second antenna 4, the third antenna 5 and the fourth antenna 6 have the same radiation frequency band, the radiation frequency band can be a 5G frequency band smaller than 6GHz, when the four antennas work, the length of the radiator distributed with current is about one quarter of the wavelength corresponding to the radiation frequency band, and the arrangement of the four antennas is beneficial to improving the signal intensity of the terminal equipment in the frequency band.

In some embodiments of the present disclosure, as shown in fig. 1, the first antenna 3 and the third antenna 5 are symmetrically distributed on both sides of the axis of the shaft portion 12, and the second antenna 4 and the fourth antenna 6 are symmetrically distributed on both sides of the axis of the shaft portion 12. Specifically, the first antenna 3 and the third antenna 5 are symmetrically arranged about the rotation shaft portion 12, and the second antenna 4 and the fourth antenna 6 are symmetrically arranged about the rotation shaft portion 12. When the first body 11 and the second body 13 are closed, the projections of the first antenna 3 and the second antenna 4 on the second body 13 coincide with the third antenna 5 and the fourth antenna 6, respectively. When the casing 1 is unfolded, the distance between the first antenna 3 and the third antenna 5 is larger, the distance between the second antenna 4 and the fourth antenna 6 is larger, the isolation between the first antenna 3, the second antenna 4, the third antenna 5 and the fourth antenna 6 can be improved, and the mutual coupling of the first antenna 3, the second antenna 4, the third antenna 5 and the fourth antenna 6 between the same frequencies is avoided.

In some embodiments of the present disclosure, as shown in fig. 1, the first antenna 3 and the second antenna 4 are respectively located at two corners of the first body 11 away from the rotation shaft portion 12, and the third antenna 5 and the fourth antenna 6 are respectively located at two corners of the second body 13 away from the rotation shaft portion 12.

Alternatively, the breaks include a first break 10, a second break 20, a third break 30, a fourth break 40, a fifth break 50, a sixth break 60, a seventh break 70, and an eighth break 80. The frame of the first body 11 includes a first side 111 far from the rotating shaft 12, a second side 112 and a third side 113 connected to two ends of the first side 111, the first side 111 is located at a side far from the rotating shaft 12, and the first break joint 10 is located at the second side 112. The second 20 and third 30 breaks are located on the first side 111 and the fourth 40 break is located on the third side 113. The second break 20 is adjacent to the second side 112 and the third break 30 is adjacent to the third side 113. The first antenna 3 is located between the first break 10 and the second break 20 and the second antenna 4 is located between the third break 30 and the fourth break 40. The fifth, sixth, seventh, and eighth breaks 50, 60, 70, and 80 are distributed on the rim of the second body 13 and are symmetrical with the first, second, third, and fourth breaks 10, 20, 30, and 40, respectively, about the rotation shaft portion 12. The frame of the second body 13 includes a fourth side 131 remote from the rotation shaft portion 12, and fifth and sixth sides 132 and 133 connected to both ends of the fourth side 131, respectively. The fifth break 50 is located on the fifth side 132, the sixth break 60 and the seventh break 70 are located on the fourth side 131, and the eighth break 80 is located on the sixth side 133. The sixth break 60 is adjacent the fifth side 132 and the seventh break 70 is adjacent the sixth side 133. The third antenna 5 is located between the fifth and sixth breaks 50 and 60 and the four antennas 6 are located between the seventh and eighth breaks 70 and 80.

In some embodiments of the present disclosure, the terminal is configured to: when the first body 11 and the second body 13 are closed, the current direction of the second antenna 4 is opposite to the current direction of the fourth antenna 6. When the first body 11 and the second body 13 are unfolded, the current direction of the second antenna 4 is the same as the current direction of the fourth antenna 6. When the first body 11 and the second body 13 are closed, the current directions of the second antenna 4 and the fourth antenna 6 are opposite, and the mutual coupling of the currents in the second antenna 4 and the fourth antenna 6 can be avoided. The current direction herein refers to the distribution of the current on the antennas, for example, the current direction of the second antenna 4 is downward, and the current direction of the fourth antenna 6 is upward, so that the current of the second antenna 4 is mainly distributed at the lower end of the second antenna 4, and the current of the fourth antenna 6 is mainly distributed at the upper end of the fourth antenna 6.

In some embodiments of the present disclosure, the terminal is further configured to: the current direction of the first antenna 3 is opposite to the current direction of the third antenna 5. In this embodiment, the current direction of the first antenna 3 is always opposite to the current direction of the third antenna 5 when the first body 11 and the second body 13 are in the unfolded state or the folded state.

In some embodiments of the present disclosure, as shown in fig. 1, the first antenna 3 is an inverted-F antenna. The first antenna 3 includes an antenna main body 301 and a rib position 302, the antenna main body 301 has a third feeding point 31 and a third tuning point 32, the third feeding point 31 is located at a side of the first main body 11 away from the rotating shaft portion 12, the third tuning point 32 is close to the second break 20, the rib position 302 is located at a side of the first main body 11 close to the rotating shaft portion 12, and the rib position 302 is connected with the antenna main body 301 and the first main body 11, respectively. The distance from the rib 302 to the second break 20 is one quarter of the wavelength corresponding to the antenna radiation frequency, the current is maximum at the rib 302 and minimum at the second break 20. The rib 302 is used to connect the antenna body 301 to a ground point on the first body 11. The rib 302 may be replaced by a capacitor, one electrode of the capacitor is connected to the antenna body 301, and the other motor of the capacitor is connected to the motherboard on the first body 11.

In some embodiments of the present disclosure, as shown in fig. 1, the third antenna 5 is a T-antenna, the third antenna 5 has a fourth feeding point 51, and the fourth feeding point 51 is located at a side of the second body 13 remote from the rotation shaft portion 12. The fourth feed point 51 is closer to the sixth break 60 than the fifth break 50, and the current is distributed between the fourth feed point 51 and the fifth break 50 when the third antenna 5 is in operation.

Alternatively, as shown in fig. 1, the fourth antenna 6 is a T-antenna, the fourth antenna 6 has a second feeding point 61, and the second feeding point 61 is located on a side of the second body 13 away from the rotation shaft portion 12. The second feed point 61 is closer to the eighth break 80 than the seventh break 70, and the current is distributed between the second feed point 61 and the seventh break 70 when the fourth antenna 6 is in operation.

Fig. 2 is a schematic diagram of a second antenna 4 provided in an embodiment of the present disclosure. In some embodiments of the present disclosure, as shown in fig. 2, the second antenna 4 is a T-antenna having a first tuning point 401, a second tuning point 402, and a first feeding point 403, the first feeding point 403 being located between the first tuning point 401 and the second tuning point 402, the first tuning point 401, the second tuning point 402, and the first feeding point 403 being located between the third break 30 and the fourth break 40. The first body 11 includes a first switch 41, a second switch 42, a first tuning circuit 43, and a second tuning circuit 44, the first switch 41 connecting the first tuning point 401 and the first tuning circuit 43, and the second switch 42 connecting the second tuning point 402 and the second tuning circuit 44.

The first tuning circuit 43 and the second tuning circuit 44 have at least one capacitor and/or inductor, so that the first tuning point 401 and the second tuning point 402 are electrically connected to the ground point through the capacitor, the inductor, or directly. The first switch 41 and the second switch 42 may have a short-circuit state, at least one capacitive access state and at least one inductive access state and be capable of switching between the above states to tune the antenna.

Illustratively, referring to fig. 2, the first switch 41 and the second switch 42 have a capacitive access state and a short circuit state, respectively. When the first body 11 and the second body 13 are unfolded, the first switch 41 is in a short-circuit state, and the second switch 42 is in a capacitance-on state. When the first body 11 and the second body 13 are closed, the first switch 41 is in a capacitance-on state, and the second switch 42 is in a short-circuit state. In the embodiment of the disclosure, the access state of the tuning circuit is switched by two switches, so that the current direction of the second antenna 4 is changed, when the first body 11 and the second body 13 are unfolded, the current direction of the second antenna 4 is the same as the current direction of the fourth antenna 6, and when the first body 11 and the second body 13 are closed, the current direction of the second antenna 4 is opposite to the current direction of the fourth antenna 6.

When the first body 11 and the second body 13 are unfolded, the palm of the user is generally held at the lower left and lower right corners of the terminal device, i.e., at positions near the fourth and eighth breaks 40 and 80. The palm covers the part of the antennas located on the third side 113 and the sixth side 133 and affects the signals of the second antenna 4 and the fourth antenna 6. The first switch 41 is placed in a short-circuit state, the second switch 42 is placed in a capacitive access state, the current direction in the second antenna 4 is mainly distributed between the first feeding point 403 and the third breaking point 30, the current in the fourth antenna 6 is mainly distributed between the seventh breaking point 70 and the second feeding point 61, and the current in the second antenna 4 and the fourth antenna 6 is mainly distributed in the non-shielded part, thereby improving the signal of the terminal device. And since the distance between the first body 11 and the second body 13 is large, the degree of coupling between the second antenna 4 and the fourth antenna 6 is low, and the current distribution of the second antenna 4 and the fourth antenna 6 does not affect the signal of the terminal device.

When the first body 11 and the second body 13 are closed, the third and seventh breaks 30 and 70 are aligned with each other, and the fourth and eighth breaks 40 and 80 are aligned with each other. The first switch 41 is controlled to be in a capacitive access state, the second switch 42 is in a short circuit state, so that the current in the second antenna 4 is mainly distributed between the first tuning point 401 and the second tuning point 402, the current in the fourth antenna 6 is mainly distributed between the seventh break 70 and the second feeding point 61, and the current direction in the second antenna 4 is opposite to the current direction in the fourth antenna 6, thereby reducing the coupling degree between the second antenna 4 and the fourth antenna 6, being beneficial to improving the isolation degree of the second antenna 4 and the fourth antenna 6, and improving the signal of the terminal equipment in a folded state.

The positions of the second antenna 4 and the fourth antenna 6 in the above embodiment may be interchanged, and the positions of the feeding point and the tuning point may be adjusted at the same time, so that the directions of the currents in the second antenna 4 and the fourth antenna 6 are opposite when the first body 11 and the second body 13 are closed, and the currents in the second antenna 4 and the fourth antenna 6 are both directed in a direction away from the third break 30 or the seventh break 70 when the first body 11 and the second body 13 are unfolded.

It should be noted that, in the above embodiment, the positions of the first antenna 3 and the third antenna 5 may be interchanged, and the positions of the feeding point and the tuning point may be adjusted at the same time, so that the current direction in the first antenna 3 is opposite to the current direction in the third antenna 5, so as to reduce the coupling degree between the first antenna 3 and the third antenna 5, which is beneficial to improving the isolation degree between the first antenna 3 and the third antenna 5.

In some examples of the present disclosure, as shown in fig. 1, the terminal device further includes a transmission line 21, a radio frequency module 22, a plurality of first power supply lines 23, and a plurality of second power supply lines 24, the radio frequency module 22 is located in the first body 11, the transmission line 21 is located in the rotating shaft portion 12, both ends of the first power supply lines 23 are connected to the radio frequency module 22 and one end of the transmission line 21, one end of the second power supply lines 24 is connected to the other end of the transmission line 21, and the other end of the second power supply lines 24 is connected to the third antenna 5 or the fourth antenna 6. The transmission line 21 is a bendable power feeding line, and can be bent as the first body 11 and the second body 13 are rotated relative to each other, so as to ensure stability of voltages supplied to the third antenna 5 and the fourth antenna 6.

Specifically, the terminal device further includes a main board 2, a third feeder 25, and a fourth feeder 26. The main board 2 is located in the first main body 11 of the housing 1, the radio frequency module 22 is located on the main board 2, one end of the third power supply line 25 and one end of the fourth power supply line 26 are connected with the radio frequency module 22, and the other ends of the third power supply line 25 and the fourth power supply line 26 are respectively connected with the first antenna 3 and the second antenna 4.

In some embodiments of the present disclosure, the positions of the first antenna 3 and the second antenna 4, and the third antenna 5 and the fourth antenna 6 may be interchanged. When the terminal device is in use, the second antenna 4 and the fourth antenna 6 are positioned on the side close to the user's grip, so that the current direction in the second antenna 4 can be adjusted when the first body 11 and the second body 13 are unfolded and closed, so that the current directions in the second antenna 4 and the fourth antenna 6 are directed away from the user's hand when the first body 11 and the second body 13 are unfolded, and the current directions in the second antenna 4 and the fourth antenna 6 are opposite when the terminal device is in the closed state, and the current directions in the first antenna 3 and the third antenna 5 are opposite.

Illustratively, the first antenna 3 is an inverted-F antenna, and the second antenna 4, the third antenna 5, and the fourth antenna 6 are T-antennas. Fig. 3 is a schematic diagram of current directions of the terminal device when the first body 11 and the second body 13 are unfolded according to the embodiment of the present disclosure. As shown in fig. 3, the first antenna 3 is located at the upper left corner of the first body 11, the second antenna 4 is located at the lower left corner of the first body 11, the third antenna 5 is located at the upper right corner of the second body 13, and the fourth antenna 6 is located at the lower right corner of the second body 13. When the first body 11 and the second body 13 are unfolded, the first switch 41 is placed in a short-circuited state, the second switch 42 is placed in a capacitive-connected state, the current direction in the first antenna 3 is in the direction toward the second break 20, the current direction in the second antenna 4 is in the direction toward the third break 30, the current direction in the third antenna 5 is in the direction toward the 5 th break 50, and the current direction in the fourth antenna 6 is in the direction toward the seventh break 70.

Fig. 4 is a schematic diagram of current directions of the terminal device provided in the embodiment of the present disclosure when the first body 11 and the second body 13 are closed. As shown in fig. 4, when the first body 11 and the second body 13 are closed, the first switch 41 is placed in a capacitive-on state, the second switch 42 is placed in a short-circuit state, the current direction in the first antenna 3 is the direction toward the second break 20, the current direction in the second antenna 4 is the direction toward the fourth break 40, the current direction in the third antenna 5 is the direction toward the 5 th break 50, and the current direction in the fourth antenna 6 is the direction toward the seventh break 70.

It should be noted that references herein to "a number", "at least one" means one or more, and "a plurality", "at least two" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

In the description of the present disclosure, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art as the case may be.

In this disclosure, unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present disclosure.

In the description of the present specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure.

The foregoing is illustrative of the present disclosure and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., which are within the spirit and principles of the present disclosure.

Claims

1. A terminal device, comprising:

A rotating shaft part (12);

A first main body (11) connected to one side of the rotating shaft portion (12);

A second body (13) connected to the other side of the rotation shaft portion (12), the first body (11) and the second body (13) being capable of being opened and closed by the rotation shaft portion (12);

-a first antenna (3) and a second antenna (4) located on the first body (11);

a third antenna (5) and a fourth antenna (6) located on the second body (13);

Wherein the first antenna (3), the second antenna (4), the third antenna (5) and the fourth antenna (6) have the same radiation frequency band.

2. The terminal device according to claim 1, characterized in that the first antenna (3) and the third antenna (5) are symmetrically arranged about the shaft portion (12);

the second antenna (4) and the fourth antenna (6) are symmetrically arranged about the shaft portion (12).

3. Terminal device according to claim 2, characterized in that the first antenna (3) and the second antenna (4) are located at two corners of the first body (11) remote from the swivel part (12), respectively,

The third antenna (5) and the fourth antenna (6) are respectively located at two corners of the second main body (13) away from the rotating shaft part (12).

4. A terminal device according to claim 3, characterized in that the terminal device is configured to: -when the first body (11) and the second body (13) are closed, the direction of the current of the second antenna (4) is opposite to the direction of the current of the fourth antenna (6);

when the first body (11) and the second body (13) are unfolded, the current direction of the second antenna (4) is the same as the current direction of the fourth antenna (6).

5. The terminal device according to claim 4, characterized in that the second antenna (4) is a T-antenna having a first tuning point (401), a second tuning point (402) and a first feeding point (403), the first feeding point (403) being located between the first tuning point (401) and the second tuning point (402);

The first main body (11) comprises a first switch (41), a second switch (42), a first tuning circuit (43) and a second tuning circuit (44), wherein the first switch (41) is connected with the first tuning point (401) and the first tuning circuit (43), and the second switch (42) is connected with the second tuning point (402) and the second tuning circuit (44).

6. A terminal device according to claim 5, characterized in that the fourth antenna (6) is a T-antenna, the fourth antenna (6) having a second feeding point (61), the second feeding point (61) being located at a side of the second body (13) remote from the swivel part (12).

7. A terminal device according to claim 3, characterized in that the terminal device is configured such that the current direction of the first antenna (3) is opposite to the current direction of the third antenna (5).

8. The terminal device according to claim 7, characterized in that the first antenna (3) is an inverted-F antenna, comprising an antenna body (301) and a rib (302), the antenna body (301) having a third feeding point (31), the third feeding point (31) being located at a side of the first body (11) remote from the rotation axis part (12), the rib (302) being located at a side of the first body (11) close to the rotation axis part (12), the rib (302) being connected to the antenna body (301) and the first body (11) respectively.

9. A terminal device according to claim 8, characterized in that the third antenna (5) is a T-antenna, the third antenna (5) having a fourth feeding point (51), the fourth feeding point (51) being located at a side of the second body (13) remote from the swivel part (12).

10. The terminal device according to any of claims 1-9, further comprising a transmission line (21), a radio frequency module (22), a plurality of first power supply lines (23), a plurality of second power supply lines (24), the radio frequency module (22) being located in the first body (11), the transmission line (21) being located in the shaft portion (12), both ends of the first power supply lines (23) being connected to the radio frequency module (22) and one end of the transmission line (21), respectively, one end of the second power supply lines (24) being connected to the other end of the transmission line (21), the other end of the second power supply lines (24) being connected to the third antenna (5) or the fourth antenna (6).