A terminal device

Abstract

This disclosure relates to a terminal device, comprising: a first mid-frame; a second mid-frame connected to the first mid-frame; wherein the first mid-frame and the second mid-frame are expandable or closeable via a hinge; a first antenna module disposed on the first mid-frame; and a second antenna module disposed on the second mid-frame, wherein when the first mid-frame and the second mid-frame are closed, the projection of the second antenna module onto the first antenna module at least partially overlaps with the first antenna module; the first antenna module and the second antenna module are respectively connected to corresponding feed circuits. In embodiments of this disclosure, when the first mid-frame and the second mid-frame are closed via a hinge, adjusting the independent feed circuits of the first antenna module and the second antenna module can reduce mutual interference between the transmitted and received wireless signals of the first antenna module and the second antenna module, thereby improving the transmission and reception performance of the first antenna module and the second antenna module.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a terminal device. Background Technology

[0002] In foldable terminal devices such as foldable phones, the mid-frames on the main and secondary sides of the phone will contact each other when closed, which will degrade the performance of the antennas on both sides. Typically, phones have symmetrical slots on the secondary side, so that the slots on the main and secondary sides are identical when closed, reducing the impact of main-secondary coupling. However, current phones only have symmetrical slots on the secondary side without an antenna module containing the antenna feed point, resulting in wasted space on the secondary side and low space utilization of the terminal device. Summary of the Invention

[0003] This disclosure provides a terminal device.

[0004] The terminal device provided in this disclosure includes at least:

[0005] First middle frame;

[0006] The second middle frame is connected to the first middle frame; wherein the first middle frame and the second middle frame can be opened or closed via a pivot.

[0007] The first antenna module is disposed on the first middle frame;

[0008] The second antenna module is disposed on the second middle frame, and when the first middle frame and the second middle frame are closed, the projection of the second antenna module onto the first antenna at least partially coincides with the first antenna module;

[0009] The first antenna module and the second antenna module are respectively connected to their respective feed circuits.

[0010] In some embodiments, the first antenna module includes: a first radiator and a second radiator, wherein a first gap is provided between the first radiator and the second radiator.

[0011] The second antenna module includes a third radiator and a fourth radiator, and a second gap is provided between the third radiator and the fourth radiator;

[0012] When the first middle frame and the second middle frame are closed, the first radiator and the third radiator coincide, and the first fracture and the second fracture coincide.

[0013] The feed circuit of the second antenna module is connected to the fourth radiator.

[0014] In some embodiments, the first antenna module further includes a fifth radiator and a sixth radiator, a rib is provided between the second radiator and the fifth radiator, and a third gap is provided between the sixth radiator and the fifth radiator.

[0015] In some embodiments, the power supply circuit of the second antenna module includes a switching module for switching the power supply position of the second antenna module to open circuit or short circuit when the frequency bands for transmitting and receiving wireless signals of the terminal device are different.

[0016] In some embodiments, the feeding circuit of the second antenna module further includes:

[0017] An inductor, one end of which is connected to the feed source, and the other end of which is connected to the switching module;

[0018] At least two capacitors are connected in parallel, with one end grounded and the other end connected to the switch module;

[0019] When the switch module is in the state of being connected to the capacitor, the feed position of the second antenna module is short-circuited;

[0020] When the switch module is in the state of disconnecting the capacitor, the feed position of the second antenna module is open.

[0021] In some embodiments, the at least two capacitors connected in parallel include:

[0022] A first capacitor and a second capacitor connected in parallel with the first capacitor; wherein the value of the first capacitor is greater than the value of the second capacitor;

[0023] When the first middle frame and the second middle frame are unfolded, the state of the switch module is that it is connected to the first capacitor and disconnected from the second capacitor;

[0024] When the first middle frame and the second middle frame are closed, the state of the switch module is that it is connected to the second capacitor and disconnected from the first capacitor.

[0025] In some embodiments, the radiation length of the fourth radiator is greater than the radiation length of the third radiator.

[0026] In some embodiments, both the third radiator and the fourth radiator are in the shape of an inverted L.

[0027] In some embodiments, the sum of the radiation length of the second radiator, the radiation length of the fifth radiator, the radiation length of the sixth radiator, the width of the rib, and the width of the third gap is equal to the radiation length of the fourth radiator.

[0028] In some embodiments, both the first radiator and the sixth radiator are in the shape of an inverted L.

[0029] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0030] This disclosure proposes that the first and second mid-frames can be unfolded or closed via a hinge. A first antenna module is located on the first mid-frame, and a second antenna module is located on the second mid-frame. The first and second antenna modules are respectively connected to corresponding feed circuits. Thus, on the one hand, when the first and second mid-frames are unfolded via the hinge, the first and second antenna modules can communicate independently; when the first and second mid-frames are closed via the hinge, adjusting the independent feed circuits of the first and second antenna modules can reduce mutual interference between their transmitted and received wireless signals, improving their transceiver performance. On the other hand, this disclosure provides antenna modules for transmitting and receiving wireless signals on both mid-frames of the foldable terminal device, instead of only on one mid-frame. This expands the usable frequency band of the terminal device and reduces space waste caused by placing antenna modules on only one mid-frame, improving the space utilization of the terminal device.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0033] Figure 1 This is a schematic diagram of a terminal device according to an exemplary embodiment. Figure 1 .

[0034] Figure 2 This is a schematic diagram of existing terminal equipment.

[0035] Figure 3 This is a schematic diagram of a terminal device according to an exemplary embodiment. Figure 2 .

[0036] Figure 4 This is a schematic diagram of a terminal device according to an exemplary embodiment. Figure 3 .

[0037] Figure 5 This is a schematic diagram of a terminal device according to an exemplary embodiment. Figure 4 .

[0038] Figure 6 This is a block diagram illustrating a terminal device according to an exemplary embodiment. Detailed Implementation

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0040] Figure 1 This is a schematic diagram of the structure of a terminal device according to an exemplary embodiment. Figure 1 .like Figure 1 As shown, the terminal device includes at least:

[0041] First middle frame 101;

[0042] The second middle frame 102 is connected to the first middle frame 101; wherein the first middle frame 101 and the second middle frame 102 can be opened or closed via the pivot 103;

[0043] The first antenna module 104 is located on the first middle frame 101;

[0044] The second antenna module 105 is located on the second middle frame 102, and when the first middle frame 101 and the second middle frame 102 are closed, the projection of the second antenna module 105 onto the first antenna module 104 at least partially coincides with the first antenna module 104.

[0045] The first antenna module 104 and the second antenna module 105 are respectively connected to the corresponding feed circuits.

[0046] The aforementioned terminal device is a foldable terminal device. The terminal device can be a wearable electronic device or a mobile terminal. The mobile terminal includes mobile phones, laptops, and tablets. The wearable electronic device includes smartwatches or smart necklaces. This disclosure does not impose any limitations.

[0047] The first mid-frame described above may be a main side mid-frame housing the motherboard, on which a processing module is mounted. The second mid-frame described above may be a secondary side mid-frame relative to the main side mid-frame. This secondary side mid-frame may house an audio module for outputting audio or a camera module for capturing images; this embodiment of the present disclosure is not limited to this.

[0048] In this embodiment of the disclosure, the size and shape of the first middle frame can match the size and shape of the second middle frame. For example, the size of the first middle frame can be equal to the size of the second middle frame; the shape of both the first and second middle frames can be square.

[0049] The aforementioned first and second middle frames can rotate via a pivot, with the rotation angle ranging from 0 to 360 degrees. For example, when the pivot rotates from 0 degrees to 180 degrees, the first and second middle frames can unfold via the pivot, at which point the first and second middle frames can be located on the same plane; when the pivot rotates from 180 degrees to 0 degrees, the first and second middle frames can close via the pivot, at which point the projection of the first middle frame onto the second middle frame coincides with the second middle frame.

[0050] Of course, the first and second middle frames can also rotate synchronously via a pivot. For example, the first and second middle frames can rotate 90 degrees synchronously, allowing them to close or unfold more quickly via the pivot.

[0051] The aforementioned first antenna module is located on the first middle frame. In some embodiments, the first middle frame includes a frame for accommodating functional devices and a border surrounding the frame, and the first antenna module may be located on the border; in other embodiments, the first middle frame may be rectangular, and the first antenna module may be disposed on the short side or the long side of the rectangular first middle frame, and the embodiments disclosed herein are not limited thereto.

[0052] For example, the first antenna module can operate in a frequency band from 600MHz to sub-6G, such as covering the 4G band, sub-6G band, GPS band and Wi-Fi band.

[0053] The aforementioned second antenna module is located on the second middle frame. In some embodiments, the second middle frame includes a frame for accommodating functional devices and a border surrounding the frame, and the second antenna module may be located on the border; in other embodiments, the second middle frame may be rectangular, and the second antenna module may be disposed on the short side or the long side of the rectangular second middle frame, and the embodiments disclosed herein are not limited thereto.

[0054] In this embodiment of the disclosure, the second antenna module and the first antenna module can transmit and receive wireless signals in the same frequency band, and can also transmit and receive wireless signals in completely different frequency bands. This embodiment of the disclosure does not impose any limitations.

[0055] For example, the second antenna module can be used to transmit and receive wireless signals in the B1, B3 and B39 frequency bands, and the first antenna module can be used to transmit and receive wireless signals in the Wi-Fi 2.4GHz or 5GHz frequency bands.

[0056] In this embodiment of the disclosure, both the first antenna module and the second antenna module can be either an inverted-F antenna (IFA) or a loop antenna, and this embodiment of the disclosure is not limited thereto.

[0057] The first antenna module and the second antenna module are located on the same side of the terminal device. For example, when both the first and second middle frames are rectangular, and the first short side of the first middle frame and the second short side of the second middle frame are located on the same side of the terminal device when the first and second middle frames are closed, the first antenna module can be set on the first short side, and the second antenna module can be set on the second short side.

[0058] For example, when both the first and second middle frames are rectangular, and the first long side of the first middle frame and the second long side of the second middle frame are located on the same side of the terminal device when the first middle frame and the second middle frame are closed, the first antenna module can be set on the first long side, and the second antenna module can be set on the second long side.

[0059] In this embodiment of the disclosure, the feed circuits corresponding to the first antenna module and the second antenna module have two states: one state includes an open circuit or a short circuit, and the other state includes impedance matching of the feed.

[0060] The first and second antenna modules are respectively connected to their corresponding feed circuits. That is, both the first and second antenna modules have independent feed circuits. When the first and second frames are closed or unfolded, adjusting the states of the feed circuits corresponding to the first and second antenna modules can reduce mutual interference between the transmitted and received wireless signals of the first and second antenna modules, thereby improving their transmission and reception performance.

[0061] In some embodiments, when the first antenna module transmits and receives wireless signals, the power supply circuit state of the second antenna module can be adjusted to make the power supply circuit of the second antenna module open, thereby reducing the low transmission and reception performance of the first antenna module caused by the coupling between the second antenna module and the first antenna module, and improving the transmission and reception performance of the first antenna module.

[0062] In other embodiments, when both the first and second antenna modules are transmitting and receiving wireless signals, the states of the feed circuits of the first and second antenna modules can be adjusted so that the transmission and reception frequencies of the second antenna module are much higher or lower than those of the first antenna module. This reduces the low transmission and reception performance caused by coupling between the first and second antenna modules when the first and second frames are closed, thereby improving the transmission and reception performance of both antenna modules. For example, when the first antenna module is transmitting and receiving wireless signals at a first frequency, the impedance matching of the feed circuit of the second antenna module can be adjusted so that the second antenna module transmits and receives wireless signals at a second frequency much lower than the first frequency. The first frequency can be 2.4 GHz, and the second frequency can be 500 MHz.

[0063] like Figure 2 As shown, in existing folding mobile phones, an antenna module 03 is placed on the main side 01, but no antenna module is placed on the secondary side 02. Only symmetrical slotting is done to reduce the impact of coupling when the phone is closed.

[0064] Based on this, the embodiments of this disclosure propose that the first and second mid-frames can be unfolded or closed via a hinge. The first antenna module is located on the first mid-frame, and the second antenna module is located on the second mid-frame. The first and second antenna modules are respectively connected to corresponding feed circuits. Thus, on the one hand, when the first and second mid-frames are unfolded via the hinge, the first and second antenna modules can communicate independently; when the first and second mid-frames are closed via the hinge, adjusting the independent feed circuits of the first and second antenna modules can reduce mutual interference between their transmitted and received wireless signals, improving their transmission and reception performance. On the other hand, the embodiments of this disclosure provide antenna modules for transmitting and receiving wireless signals on both mid-frames of the foldable terminal device, instead of only on one mid-frame. This expands the available frequency bands of the terminal device and reduces space waste caused by placing antenna modules on only one mid-frame, improving the space utilization of the terminal device.

[0065] In some embodiments, such as Figure 3 and Figure 4 As shown, the first antenna module 104 includes: a first radiator 104a and a second radiator 104b, and a first gap A is provided between the first radiator 104a and the second radiator 104b.

[0066] The second antenna module 105 includes a third radiator 105a and a fourth radiator 105b, and a second gap B is provided between the third radiator 105a and the fourth radiator 105b.

[0067] When the first middle frame 101 and the second middle frame 102 are closed, the first radiator 104a coincides with the third radiator 105a, and the first fracture A and the second fracture B coincide.

[0068] The feed circuit 106 of the second antenna module is connected to the fourth radiator 105b.

[0069] In this embodiment of the disclosure, the radiation length of the first radiator is equal to the radiation length of the second radiator. The width of the first slit is equal to the width of the second slit.

[0070] The aforementioned first gap increases the isolation between the first and second radiators, thereby reducing their mutual influence and improving the transceiver performance of different radiators located on the first middle frame. Similarly, the aforementioned second gap increases the isolation between the third and fourth radiators, thereby reducing their mutual influence and improving the transceiver performance of different radiators located on the second middle frame.

[0071] It should be noted that the widths of the first and second slits are positively correlated with the isolation effect. The larger the widths of the first and second slits, the better the isolation effect between different radiators.

[0072] The first antenna module includes a first radiator and a second radiator; the second antenna module includes a third radiator and a fourth radiator. The first, second, third, and fourth radiators can be connected to different feed terminals to transmit and receive wireless signals in different frequency bands.

[0073] For example, the first radiator may be a Bluetooth (BT) antenna radiator; the second radiator may be a wireless fidelity (WIFI) antenna radiator; the third radiator may be a Universal Mobile Telecommunications System (UMTS) antenna radiator; and the fourth radiator may be a Zifeng protocol-based communication antenna radiator.

[0074] In this embodiment, the feed circuit of the second antenna module is connected to the fourth radiator. Thus, on the one hand, by adjusting the feed circuit of the second antenna module, the transmit / receive frequency band of the fourth radiator can be adjusted, making it much larger than that of the second radiator. This reduces the low transmit / receive performance caused by coupling between the fourth and second radiators when the first and second frames are closed, thereby improving the transmit / receive performance of both the fourth and second radiators. On the other hand, by adjusting the feed circuit of the second antenna module, the feed position of the fourth radiator can be adjusted, ensuring that the feed of the fourth radiator is open when the second radiator is transmitting and receiving wireless signals. This further reduces the low transmit / receive performance of the second radiator caused by coupling between the second and fourth radiators, thereby improving its transmit / receive performance.

[0075] In some embodiments, such as Figure 3 and Figure 4 As shown, the first antenna module further includes a fifth radiator 104c and a sixth radiator 104d, a rib 107 is provided between the second radiator 104b and the fifth radiator 104c, and a third gap C is provided between the sixth radiator 104d and the fifth radiator 104c.

[0076] In this embodiment of the disclosure, the fifth radiator and the sixth radiator may be different types of radiators, and are respectively connected to different feed terminals to transmit and receive wireless signals of different frequency bands.

[0077] For example, the fifth radiator may be a radiator of a Long Term Evolution (LTE) antenna, and the fourth radiator may be a radiator of a Universal Mobile Telecommunications System (UMTS) antenna. This disclosure does not impose any limitations on the embodiments.

[0078] The aforementioned ribs can be connected to the grounding point of the terminal equipment, so that the return current of the second and fifth radiators can flow back to the ground through the ribs.

[0079] It should be noted that the aforementioned ribs can divide a block-shaped radiator into a second radiator and a fifth radiator. The shape of the block-shaped radiator can be T-shaped; the radiation lengths of the second radiator and the fifth radiator can be the same or different, and this disclosure does not impose any limitations.

[0080] In this embodiment of the present disclosure, when the radiation length of the second radiator is different from that of the fifth radiator, the terminal device can transmit and receive wireless signals in more frequency bands; when the radiation length of the second radiator is the same as that of the fifth radiator, the strength of the transmitted and received wireless signals can be improved.

[0081] The width of the third fracture may be the same as or different from the width of the first fracture, and this embodiment of the present disclosure does not impose any limitation. Similarly, the width of the third fracture may be the same as or different from the width of the second fracture, and this embodiment of the present disclosure does not impose any limitation.

[0082] The aforementioned third slit can increase the isolation between the fifth and sixth radiators, reduce the mutual influence between the fifth and sixth radiators, and improve the transmission and reception performance of different radiators located on the second middle frame.

[0083] It should be noted that the width of the third fracture is positively correlated with the isolation level. The wider the third fracture, the better the isolation effect between the fifth and sixth radiators.

[0084] In some embodiments, the power supply circuit of the second antenna module includes a switching module for switching the power supply position of the second antenna module to open circuit or short circuit when the frequency bands for transmitting and receiving wireless signals of the terminal device are different.

[0085] In this embodiment, the second antenna module includes a third radiator and a fourth radiator. When the power supply circuit of the second antenna module is connected to the fourth radiator, the corresponding switch module is used to switch the power supply position of the fourth radiator to open circuit or short circuit; when the power supply circuit of the second antenna module is connected to the third radiator, the corresponding switch module is used to switch the power supply position of the third radiator to open circuit or short circuit.

[0086] The switching states of the aforementioned switch module include an on state and an off state. When the switch module is in the on state and the feed circuit of the second antenna module is connected to the fourth radiator, the feed circuit of the fourth radiator is directly grounded, thus switching the feed position of the fourth radiator to a short circuit. When the switch is in the off state and the feed circuit of the second antenna module is connected to the fourth radiator, the feed circuit of the fourth radiator is disconnected, thus switching the feed position of the fourth radiator to an open circuit.

[0087] In this embodiment, the switching module may include a component composed of a MOSFET or a transistor. The switching module includes a control terminal and two connection terminals. The control terminal receives control signals and controls the switching state of the switching module based on the control signals. The control signals may be sent to the control terminal by an RF chip or a controller. These control signals include, but are not limited to, outputting a level to the control terminal. When the level of the control terminal is low, the switching module is in an on state. When the level of the control terminal is high, the switching module is in an off state.

[0088] The aforementioned switch module may also include a single-pole double-throw switch or a single-pole four-throw switch, and the embodiments disclosed herein are not limited thereto.

[0089] For example, such as Figure 3 As shown, the first antenna module includes a first radiator and a sixth radiator; the second antenna module includes a fourth radiator; the feed circuit of the second antenna module is connected to the fourth radiator; the switching module can be used to switch the feed position of the fourth radiator to short circuit when the second harmonic of the fourth radiator falls within the operating frequency range of the sixth radiator. This reduces the degradation of the sixth radiator's transceiver performance caused by the low-efficiency current mode of the fourth radiator, and improves the transceiver performance of the sixth radiator.

[0090] The switching module can also be used to switch the feed position of the fourth radiator to an open circuit when the first radiator is transmitting and receiving wireless signals and the feed position of the fourth radiator is short-circuited. In this way, the performance degradation of the first radiator caused by the operating frequency of the third radiator energized by the fourth radiator falling within the operating frequency band of the first radiator can be reduced, thereby improving the transmission and reception performance of the first radiator.

[0091] In some embodiments, such as Figure 5 As shown, the feeding circuit of the second antenna module includes:

[0092] Inductor 108 is connected at one end to feed source 109 and at the other end to the switch module 110;

[0093] At least two capacitors 111 are connected in parallel, with one end grounded and the other end connected to the switch module 110;

[0094] When the switch module 110 is in the state of being connected to the capacitor, the feed position of the second antenna module is short-circuited.

[0095] When the switch module 110 is in the state of disconnecting the capacitor, the feed position of the second antenna module is open.

[0096] There may be multiple inductors, and multiple inductors may be connected in series. In this embodiment of the present disclosure, the inductance value may be set in the range of 30nH to 60nH, and this embodiment of the present disclosure does not impose any limitation.

[0097] The capacitance values ​​of the different capacitors in the above-mentioned at least two parallel capacitors may be the same or different, and this disclosure does not impose any restrictions.

[0098] In this embodiment of the disclosure, the number of capacitors can be set according to actual needs. For example, the power supply circuit has four capacitors connected in parallel, or the power supply circuit has two capacitors connected in parallel. This embodiment of the disclosure does not impose any limitations.

[0099] The aforementioned switch module includes a first contact terminal and a second contact terminal. The first contact terminal is connected to an inductor, and the second contact terminal is connected to at least two capacitors connected in parallel. The second contact terminal includes multiple contact points, with each contact point connected to one capacitor. In this embodiment, the number of contact points can be set to be the same as the number of capacitors, allowing the switch module to establish a better electrical connection with the capacitors.

[0100] In this embodiment of the disclosure, the switching state of the switch module is different. The first contact terminal can simultaneously establish a connection with multiple contact points of the second contact terminal, or it can simultaneously not establish a connection with multiple contact points of the second contact terminal, or it can establish a connection with some contact points of the second contact terminal. This embodiment of the disclosure does not impose any limitations.

[0101] It should be noted that the connection state between the capacitor and the inductor can be changed by different switching states of the switching module. For example, when the switching state of the switching module is such that multiple contact points of the first contact terminal and the second contact terminal are simultaneously connected, the feeder can be connected to ground through the capacitor. Based on the characteristic of capacitors resisting DC and passing AC, the second antenna module can be connected to ground through the feeder, which can switch the feed position of the second antenna module to a short circuit.

[0102] When the switching state of the switching module is such that multiple contact points of the first contact terminal and the second contact terminal are not connected at the same time, an open circuit is formed between the capacitor and the inductor, that is, the power supply position of the second antenna module is switched to an open circuit.

[0103] When the switching state of the switch module establishes a connection between some of the contact points of the first and second contact terminals, the capacitor and inductor can form different impedances. For example, when the switching state of the switch module establishes a connection between one of the contact points of the first and second contact terminals, the capacitor and inductor can form a first impedance; when the switching state of the switch module establishes a connection between both of the contact points of the first and second contact terminals, the capacitor and inductor can form a second impedance different from the first impedance; based on the first and second impedances, the second antenna module can transmit and receive wireless signals of different frequency bands.

[0104] For example, such as Figure 3 As shown, when the first and second middle frames are closed, the feed circuit of the second antenna module is connected to the fourth radiator. In this embodiment, the current mode of the fourth radiator causes a decrease in the transceiver performance of the sixth radiator. By switching the feed position of the fourth radiator to a short circuit, the current mode of the fourth radiator can be disrupted, reducing the impact of the fourth radiator on the sixth radiator and improving the transceiver performance of the sixth radiator.

[0105] When the feed position of the fourth radiator is switched to short-circuit, the fourth radiator will affect the transmission and reception performance of the first radiator through the third radiator. This embodiment switches the feed position of the fourth radiator to open-circuit, which reduces the impact of the fourth radiator on the first radiator and improves the transmission and reception performance of the first radiator.

[0106] In some embodiments, such as Figure 5 As shown, the at least two capacitors connected in parallel include: a first capacitor and a second capacitor connected in parallel with the first capacitor, wherein the value of the first capacitor is greater than the value of the second capacitor;

[0107] When the first middle frame and the second middle frame are unfolded, the state of the switch module is that it is connected to the first capacitor and disconnected from the second capacitor;

[0108] When the first middle frame and the second middle frame are closed, the state of the switch module is that it is connected to the second capacitor and disconnected from the first capacitor.

[0109] In this embodiment of the present disclosure, when the first and second middle frames are unfolded or closed via a hinge, a capacitive load is formed between the first and second middle frames, causing frequency offset of the antenna. Therefore, in this embodiment of the present disclosure, when the first and second middle frames are unfolded via a hinge, by connecting the first capacitor and disconnecting it from the second capacitor, the frequency offset caused by the unfolding of the terminal device can be offset; when the first and second middle frames are closed via a hinge, by connecting the second capacitor and disconnecting it from the first capacitor, the frequency offset caused by the closing of the terminal device can be offset.

[0110] In this way, by using different switching states of the switching module, the impact of the terminal device being closed or opened on the transmission and reception of wireless signals by the second antenna module can be reduced, thereby improving the transmission and reception performance of the second antenna module.

[0111] For example, such as Figure 3 As shown, the power supply circuit 106 of the second antenna module is connected to the fourth radiator 105b. This embodiment of the present disclosure connects different capacitors to different switching states of the switching module, which reduces the impact of the terminal device's closing or opening on the transmission and reception of wireless signals by the fourth radiator, thereby improving the transmission and reception performance of the fourth radiator.

[0112] In some embodiments, the radiation length of the fourth radiator is greater than the radiation length of the third radiator.

[0113] In this embodiment of the disclosure, the radiation length of the radiator is negatively correlated with the radiation frequency, and the radiation frequency of the fourth radiator is less than that of the third radiator.

[0114] For example, the fourth radiator can be used to transmit and receive communication frequency bands corresponding to 2G and 3G; the third radiator can be used to transmit and receive frequency bands corresponding to N78 and N79 in the 5G frequency band, and the embodiments disclosed herein are not limited.

[0115] In some embodiments, such as Figure 4 As shown, both the third radiator and the fourth radiator are inverted L-shaped.

[0116] In some embodiments, the sum of the radiation length of the second radiator, the radiation length of the fifth radiator, the radiation length of the sixth radiator, the width of the rib, and the width of the third gap is equal to the radiation length of the fourth radiator.

[0117] In this embodiment of the present disclosure, when the first and second middle frames of the terminal device are closed by the pivot, the projection of the fourth radiator onto the first middle frame coincides with the second, fifth, and sixth radiators. That is, when the first and second middle frames of the terminal device are closed by the pivot, the second, fifth, and sixth radiators are directly facing the fourth radiator.

[0118] The radiation length of the fourth radiator is greater than that of the sixth radiator. When the second harmonic of the fourth radiator falls within the operating frequency range of the sixth radiator, the inefficient current mode of the fourth radiator's second harmonic will degrade the transmission and reception efficiency of the sixth radiator. Therefore, this embodiment of the present disclosure uses the switching state of the switching module to switch the feed position of the fourth radiator to a short circuit, which can disrupt the current mode of the fourth radiator and reduce the performance degradation caused by the coupling between the fourth and sixth radiators.

[0119] The radiation length of the first radiator is the same as that of the third radiator, and the current mode of the first radiator is the same as that of the third radiator. When the feed position of the fourth radiator is switched to short circuit, the third radiator will couple with the part near the fourth radiator, forming an inefficient current mode. Since the operating frequency of the current mode formed by coupling may fall within the operating frequency range of the first radiator, it will cause performance degradation of the first radiator. Therefore, this disclosure reduces the coupling between the third radiator and the part near the fourth radiator by switching the switching state of the switching module to open circuit, thereby reducing the impact on the transmit / receive performance of the first radiator.

[0120] In some embodiments, such as Figure 4 As shown, both the first radiator and the sixth radiator are inverted L-shaped.

[0121] It should be noted that the terms "first", "second", "third", "fourth", "fifth" and "sixth" in the embodiments of this disclosure are for ease of description and distinction only, and have no other specific meaning.

[0122] Figure 6 This is a block diagram illustrating a terminal device according to an exemplary embodiment. For example, the terminal device may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0123] Reference Figure 6 The terminal device may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0124] Processing component 802 typically controls the overall operation of the terminal device, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0125] Memory 804 is configured to store various types of data to support operation on the terminal device. Examples of this data include instructions for any application or method operating on the terminal device, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0126] Power component 806 provides power to various components of the terminal device. Power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the terminal device.

[0127] Multimedia component 808 includes a screen that provides an output interface between a terminal device and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When the terminal device is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0128] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when the terminal device is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0129] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0130] Sensor assembly 814 includes one or more sensors for providing status assessments of various aspects of the terminal device. For example, sensor assembly 814 can detect the on / off state of the terminal device, the relative positioning of components such as the terminal device's display and keypad, changes in the position of the terminal device or a component of the terminal device, the presence or absence of user contact with the terminal device, the terminal device's orientation or acceleration / deceleration, and temperature changes. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0131] Communication component 816 is configured to facilitate wired or wireless communication between the terminal device and other devices. The terminal device can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0132] In an exemplary embodiment, the terminal device may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0133] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0134] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A terminal device, characterized by comprising: The application relates to a terminal device, comprising: a first middle frame; a second middle frame connected with the first middle frame, wherein the first middle frame and the second middle frame can be opened or closed through a rotating shaft; a first antenna module arranged on the first middle frame; a second antenna module arranged on the second middle frame, and a projection of the second antenna module on the first antenna module at least partially overlaps the first antenna module when the first middle frame and the second middle frame are closed; the first antenna module and the second antenna module are respectively connected with corresponding feeding circuits; the feeding circuit of the second antenna module comprises: a switch module for switching the feeding position of the second antenna module to open circuit or short circuit when the terminal device transmits and receives wireless signals in different frequency bands; at least two parallelly arranged capacitors, one end of which is grounded and the other end of which is connected with the switch module; when the state of the switch module is connected with at least one capacitor, the feeding position of the second antenna module is short-circuited; when the state of the switch module is disconnected with all the capacitors, the feeding position of the second antenna module is open-circuited.

2. The terminal device according to claim 1, characterized by the first antenna module comprises a first radiator and a second radiator, and a first break is arranged between the first radiator and the second radiator; the second antenna module comprises a third radiator and a fourth radiator, and a second break is arranged between the third radiator and the fourth radiator; when the first middle frame and the second middle frame are closed, the first radiator overlaps the third radiator, and the first break overlaps the second break; the feeding circuit of the second antenna module is connected with the fourth radiator.

3. The terminal device according to claim 2, characterized by the first antenna module further comprises a fifth radiator and a sixth radiator, and a muscle position is arranged between the second radiator and the fifth radiator, and a third break is arranged between the sixth radiator and the fifth radiator.

4. The terminal device according to any one of claims 1 to 3, characterized in that, the feeding circuit of the second antenna module further comprises: an inductor, one end of which is connected with a feed source and the other end of which is connected with the switch module.

5. The terminal device according to claim 3, characterized by the at least two parallelly arranged capacitors comprise: a first capacitor and a second capacitor parallelly arranged with the first capacitor, wherein the first capacitor value is greater than the second capacitor value; when the first middle frame and the second middle frame are opened, the state of the switch module is connected with the first capacitor and disconnected with the second capacitor; when the first middle frame and the second middle frame are closed, the state of the switch module is connected with the second capacitor and disconnected with the first capacitor.

6. The terminal device according to claim 2, characterized by the radiation length of the fourth radiator is greater than the radiation length of the third radiator.

7. The terminal device according to claim 2, characterized by the third radiator and the fourth radiator are both in the shape of inverted L.

8. The terminal device according to claim 3, characterized by the sum of the radiation length of the second radiator, the radiation length of the fifth radiator, the radiation length of the sixth radiator, the muscle position width and the third break width is equal to the radiation length of the fourth radiator.

9. The terminal device according to claim 3, characterized by the first radiator and the sixth radiator are both in the shape of inverted L.

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