CN112670702B

CN112670702B - Terminal equipment

Info

Publication number: CN112670702B
Application number: CN201910980235.4A
Authority: CN
Inventors: 段晓超; 薛宗林; 张禄鹏
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2022-12-27
Anticipated expiration: 2039-10-15
Also published as: CN112670702A

Abstract

The present disclosure relates to a terminal device, including: the shell comprises a conductive frame, wherein a first frame connecting point, a second frame connecting point and a first grounding point are arranged on the conductive frame, and the second frame connecting point is arranged between the first frame connecting point and the first grounding point; a feeding point disposed on the circuit board for inputting or outputting an electrical signal; a first tuning module connected between the feeding point and the first frame connecting point, the first tuning module including a first switch component, the first tuning module having different impedances when the first switch component is in different switch states; the feeding point, the first tuning module, the first frame connecting point, the second frame connecting point and a second grounding point on the circuit board are connected to form an antenna; the impedance of the first tuning module is different, and the frequency bands of the antenna for receiving and transmitting wireless signals are different.

Description

Terminal equipment

Technical Field

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

Background

With the rapid development and technological requirements of communication technologies, terminal devices are increasingly developing towards small headroom and high screen occupation ratio, and the process of a traditional antenna and the deployment of a small headroom and a non-independent networking NSA network are increasingly conflicting, for example, the process of the traditional antenna and the small headroom cannot support a frequency band corresponding to NSA.

Disclosure of Invention

The present disclosure provides a terminal device.

The terminal device provided by the embodiment of the disclosure at least comprises:

the shell comprises a conductive frame, wherein a first frame connecting point, a second frame connecting point and a first grounding point are arranged on the conductive frame, and the second frame connecting point is arranged between the first frame connecting point and the first grounding point;

a feeding point disposed on the circuit board for inputting or outputting an electrical signal;

a first tuning module connected between the feeding point and the first frame connecting point, the first tuning module including a first switch component, the first tuning module having different impedances when the first switch component is in different switch states;

the feeding point, the first tuning module, the first frame connecting point, the second frame connecting point and a second grounding point on the circuit board are connected to form an antenna; the impedance of the first tuning module is different, and the frequency bands of the antenna for receiving and transmitting wireless signals are different.

In one embodiment, the first tuning module has a first impedance, and the antenna is capable of transceiving wireless signals in a first frequency band; the first tuning module is provided with a second impedance, and the antenna can receive and transmit wireless signals of a second frequency band.

In one embodiment, the first switch assembly comprises:

the first controlled switch, the second controlled switch and the third controlled switch; the first controlled switch is connected with the second controlled switch and the third controlled switch in parallel;

when the first controlled switch is in a closed state and the second controlled switch and the third controlled switch are both in an open state, the first tuning module has the first impedance;

and under the condition that the second controlled switch is in a closed state and the first controlled switch and the third controlled switch are both in an open state, the first tuning module has the second impedance.

In one embodiment, the terminal device further includes:

the first capacitor is connected with the conductive frame through a first connecting frame point;

the inductor is connected to the rear end of the first capacitor;

the first tuning module further comprises:

a second capacitor connected between the inductor and the feeding point;

one end of the first controlled switch is connected between the inductor and the second capacitor, and the other end of the first controlled switch is connected with the second grounding point;

one end of the second controlled switch is connected between the first controlled switch and the second capacitor, and the other end of the second controlled switch is connected with the second grounding point; and one end of the third controlled switch is connected between the second capacitor and the feeding point, and the other end of the third controlled switch is connected with the second grounding point.

In one embodiment, the terminal device further includes:

the second tuning module is connected between the second frame connecting point and the second grounding point and comprises a second switch component, and the second tuning module has different impedances under the condition that the switching states of the second switch component are different;

when the first tuning module has the first impedance and the second impedance, the second tuning module has a third impedance;

the second tuning module is further provided with a fourth impedance, and when the second tuning module is provided with the fourth impedance and the first tuning module is provided with the first impedance, the antenna is used for receiving and transmitting wireless signals of a third frequency band.

In an embodiment, the second tuning module further has a fifth impedance, and when the second tuning module has the fifth impedance and the first tuning module has the first impedance, the antenna is further configured to transceive a wireless signal in a fourth frequency band.

In one embodiment, the second switch assembly comprises: the four parallel controlled switches are respectively a fourth controlled switch, a fifth controlled switch, a sixth controlled switch and a seventh controlled switch; when a fifth controlled switch is in a closed state and the fourth, sixth and seventh controlled switches are in open states, the second tuning module has the fourth impedance;

the second tuning module has a fifth impedance when a sixth controlled switch is in a closed state and the fourth, fifth, and seventh controlled switches are in open states.

In one embodiment, the second tuning module has the third impedance when the fourth controlled switch is in a closed state and the fifth, sixth, and seventh controlled switches are in open states.

In one embodiment, the housing is a rectangular housing, and the housing includes a first short frame, a second long frame, and a third long frame, the first short frame is connected to the second long frame and the third long frame, respectively, and the second long frame and the third long frame are oppositely disposed frames;

at least part of the first short frame is the conductive frame.

In one embodiment, a slit is arranged on the first short frame;

the first grounding point is arranged between the slit and the second frame connecting point.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the first tuning module is connected between the feeding point and the first frame connecting point and has different impedances in different switching states, and the antenna formed by the first tuning module can receive and transmit wireless signals in different frequency bands based on the impedance difference of the first tuning module. That is to say, this disclosed embodiment can be based on the on-off state of adjusting first tuning module for the antenna can receive and dispatch the radio signal of different frequency channels, and then makes the antenna can support more frequency channels, can satisfy the NSA frequency channel demand. In addition, the antenna of the embodiment of the disclosure can receive and transmit wireless signals of different frequency bands, and for receiving and transmitting wireless signals of different frequency bands, a plurality of antenna structures need to be arranged on the terminal device, so that the space of the terminal device occupied by the antenna is reduced, and the space utilization rate of the terminal device is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

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

Fig. 1 is a first schematic diagram of a terminal device shown according to an exemplary embodiment.

Fig. 2 is a schematic diagram two of a terminal device according to an exemplary embodiment.

Fig. 3 is a third schematic diagram of a terminal device according to an example embodiment.

Fig. 4 is a fourth schematic diagram of a terminal device shown in accordance with an example embodiment.

Fig. 5 is a fifth schematic diagram of a terminal device according to an example embodiment.

Fig. 6 is a sixth schematic diagram illustrating a terminal device according to an example embodiment.

Fig. 7 is a seventh schematic diagram illustrating a terminal device according to an example embodiment.

Fig. 8 is a diagram eight illustrating a terminal device, according to an example embodiment.

Fig. 9 is a diagram nine illustrating a terminal device according to an example embodiment.

Fig. 10 is a diagram ten illustrating a terminal device according to an example embodiment.

Fig. 11 is a block diagram illustrating a terminal device according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Fig. 1 is a first schematic structural diagram of a terminal device according to an exemplary embodiment. As shown in fig. 1, the terminal device includes at least:

the shell comprises a conductive frame 11, wherein a first frame connecting point 12, a second frame connecting point 13 and a first grounding point 14 are arranged on the conductive frame 11, and the second frame connecting point 13 is arranged between the first frame connecting point 12 and the first grounding point 14;

a feeding point 15 provided on the circuit board for inputting or outputting an electrical signal;

a first tuning module 16 connected between the feeding point 15 and the first frame connecting point 12, wherein the first tuning module 16 comprises a first switch component, and the first tuning module 16 has different impedances when the switch states of the first switch component are different;

the feeding point 15, the first tuning module 16, the first frame connecting point 12, the second frame connecting point 13 and a second grounding point 17 on the circuit board are connected to form an antenna; the impedance of the first tuning module is different, and the frequency bands of the antenna for receiving and transmitting wireless signals are different.

In the embodiment of the present disclosure, the terminal device may be a wearable electronic device and a mobile terminal, where the mobile terminal includes a mobile phone, a notebook and a tablet computer, and the wearable electronic device includes a smart watch.

The shape of the housing can be set according to the requirements of users. For example, the housing of the terminal device may be configured as a rectangular housing, and the disclosed embodiments are not limited thereto.

The housing includes a conductive bezel, which may be a bezel formed of metal, an alloy material, or conductive plastic and having a conductive function.

The first frame connecting point and the second frame connecting point can be both arranged on the conductive frame and used for conducting a feeding point signal to a connecting point on the conductive frame or guiding a signal received by the antenna to the connecting point of the feeding point. The above-mentioned feeding point is provided on a Circuit Board including a Printed Circuit Board (PCB) of the terminal device. The PCB may be a motherboard within the terminal device.

It should be noted that the feeding point is a connection point between the feeder and the antenna, and the feeder is a transmission line for transmitting an electrical signal between the antenna and the rf transceiver module on the terminal device. When the wireless signal is transmitted, the feed point outputs the electric signal from the radio frequency transceiving module end to the antenna, so that the antenna radiates the wireless signal under the excitation of the electric signal; when receiving wireless signals, the feed point transmits electric signals obtained by antenna conversion to the radio frequency transceiving module through the feeder line, and the wireless signals are received.

In an embodiment of the disclosure, the first tuning module is disposed between the feeding point and the first frame connecting point, and the first tuning module includes a first switch component. The first tuning module has different impedances when the first switch element has different switch states.

Illustratively, the first tuning module may be a packaged tuner of a particular model, for example, including but not limited to, QAT3550.

Illustratively, the first tuning module may be an unpackaged tuner composed of one or more components, not limited to the QAT3550.

It should be noted that, the first switch assembly may include: the number of the controlled switches may be at least two, for example, the number of the controlled switch assemblies may be 3, 4, or 5, and embodiments of the present disclosure are not limited.

When the number of the controlled switches is 3, 8 switch states can be obtained by combination, and the first tuning module can have 8 different impedances;

when the number of the controlled switches is 4, 16 switch states can be obtained by combination, and the first tuning module can have 16 different impedances;

it can be understood that, when the number of the controlled switches correspondingly disposed on the first switch assembly is larger, the first tuning module can correspondingly have more different impedances. That is, in practical process, the number of controlled switches in the first switch assembly can be set according to practical needs to meet different needs.

In the embodiment of the present disclosure, the second grounding point is disposed on the circuit board and may be connected to the grounding point of the circuit board, and the connection manner of the second grounding point and the grounding point on the circuit board includes, but is not limited to, an antenna spring, an antenna thimble, or welding.

The feeding point, the first tuning module, the first frame connecting point, the second frame connecting point and the second grounding point are connected to form the antenna. Wherein, the connection of feed point, first harmonious module, first flange point, second flange point and second earth point includes: the feeding point, the first tuning module and the first frame connecting point are connected, the second frame connecting point and the second grounding point are connected, and the first frame connecting point is connected with the second frame connecting point through the conductive frame.

It should be noted that the first tuning module has different impedances in different switching states of the first switching element. Under different impedances of the first tuning module, the impedance between the feeding point and the first tuning module changes along with the change, and the frequency band of the antenna for receiving and transmitting wireless signals is further influenced.

Illustratively, the frequency band of the antenna for transceiving the wireless signal includes, but is not limited to, a 3300MHz to 3800MHz frequency band and a 1710MHz to 1785MHz frequency band corresponding to the first frequency band; the second frequency band corresponds to 4400MHz to 5000MHz frequency bands, 1710MHz to 1785MHz frequency bands and the like.

It can be understood that this disclosed embodiment can be based on the on off state of adjusting first tuning module for the antenna not only can receive and dispatch the radio signal of first frequency channel, can also receive and dispatch the radio signal of second frequency channel, and then makes the antenna can support more frequency channels, satisfies the requirement of NSA frequency channel.

In one embodiment, the first tuning module has a first impedance, and the antenna can receive and transmit wireless signals in a first frequency band; the first tuning module is provided with a second impedance, and the antenna can receive and transmit wireless signals of a second frequency band.

Illustratively, the wireless signals of the first frequency band may include wireless signals of 3300MHz to 3800MHz frequency bands, and may further include wireless signals of 1710MHz to 1785MHz frequency bands;

the wireless signals in the second frequency band may include wireless signals in a 4400MHz to 5000MHz frequency band, and may further include wireless signals in a 1710MHz to 1785MHz frequency band.

It can be understood that, by adjusting the on-off state of the first tuning module in the antenna, the antenna can simultaneously receive and transmit wireless signals of two frequency bands, so that the frequency band receiving and transmitting modes of the antenna are expanded, and the antenna can simultaneously support the frequency band requirement of NSA.

In one embodiment, as shown in fig. 2, the first switch assembly comprises:

a first controlled switch 16a, a second controlled switch 16b, and a third controlled switch 16c; the first controlled switch 16a is connected in parallel with the second controlled switch 16b and the third controlled switch 16c;

when the first controlled switch 16a is in a closed state and the second controlled switch 16b and the third controlled switch 16c are both in an open state, the first tuning module has a first impedance;

with the second controlled switch 16b in the closed state and both the first controlled switch 16a and the third controlled switch 16c in the open state, the first tuning module has a second impedance.

In the embodiment of the present disclosure, the first switch assembly includes three controlled switches, and 8 corresponding switch states can be obtained by combining different switch states of the three controlled switches. And because different switch states correspond to the first tuning module and have different impedances, the first tuning module can correspond to 8 impedances.

Of course, in the process of adjusting the first tuning module, in addition to the first tuning module having the first impedance and the second impedance, the first tuning module may also have other impedances different from the first impedance and the second impedance by adjusting, so as to obtain the corresponding transceiving frequency band of the wireless signal. For example, when the first controlled switch, the second controlled switch and the third controlled switch are all in the off state, the first tuning module has a sixth impedance, and the transceiving frequency band of the wireless signal is 1920MHz to 1980 MHz. In an actual application process, the impedance corresponding to different switch states of the first tuning module and the transceiver frequency band of the wireless signal corresponding to the impedance are determined based on an actual debugging result, and the embodiment of the disclosure is not limited.

In one embodiment, the first tuning module further comprises:

the detection component is connected between the first frame connecting point and the feeding point and is used for detecting the current impedance of the antenna;

and the processing circuit is respectively connected with the detection circuit and the first switch component, and generates a control instruction based on the current impedance and the target matching impedance, wherein the control instruction is used for controlling the switch state of the first switch component.

It is understood that, when a usage scenario of the terminal device changes, for example, when the terminal device contacts an object, or a protective film is covered on a housing of the terminal device, impedance of an antenna end in the terminal device changes, and further, antenna performance such as transmission efficiency and transmission power is reduced based on the change of the antenna impedance. Therefore, in the embodiment of the present disclosure, the first tuning module can also detect the current impedance of the antenna based on the detection circuit, and reduce the decrease of the antenna performance caused by the change of the usage scenario of the terminal device by adjusting the on-off state of the first switch component.

In an embodiment, as shown in fig. 3, the terminal device further includes:

the first capacitor 18 is connected with the conductive frame 11 through the first frame connecting point 12;

an inductor 19 connected to the rear end of the first capacitor 18;

the first tuning module further comprises:

a second capacitor 16d connected between the inductor 19 and the feeding point 15;

a first controlled switch 16a having one end connected between the inductor 19 and the second capacitor 16d and the other end connected to a second ground point;

a second controlled switch 16b having one end connected between the first controlled switch 16a and the second capacitor 16d and the other end connected to a second ground point;

a third controlled switch 16c has one end connected between the second capacitor 16d and the feeding point 15 and the other end connected to a second ground point.

In an embodiment of the present disclosure, the first capacitor is configured to reduce the voltage applied to the first tuning module when the voltage applied to the first tuning module is higher than the maximum voltage endured by the first tuning module, so as to protect the first tuning module from breakdown; the inductance is used for offsetting impedance change between the feeding point and the first frame connecting point caused by the arrangement of the first capacitor.

The first controlled switch 16a, the second controlled switch 16b, the third controlled switch 16c, and the like may be electronic components that control the switch states based on a control signal of the control circuit, for example, the first controlled switch 16a, the second controlled switch 16b, and the third controlled switch 16c may be mos transistors, gates of the mos transistors may be connection terminals to which the control circuit is connected, and sources and drains of the mos transistors are turned on or off when corresponding voltages are input to the gates.

The second capacitor is a variable capacitor. The capacitance value of the variable capacitor can be adjusted. By adjusting the variable capacitance value and the switching state of the first switching element, the first tuning module can have different impedances.

It should be noted that, various combination states can be obtained by combining the variable capacitance value of the variable capacitor and the switching state of the first switching component, for example, combination state in 144 can be obtained by combining, and the embodiments of the present disclosure are not limited.

Illustratively, the capacitance value of the variable capacitor is adjusted in a range including, but not limited to, 0.75 to 8.75pF (picofarad). The adjustment interval of the capacitance value of the variable capacitor includes, but is not limited to, 0.25pF.

In an embodiment, as shown in fig. 4, the terminal device further includes:

a second tuning module 20 connected between the second frame connecting point 13 and the second grounding point 17, and including a second switch component, wherein the second tuning module has different impedance when the switch state of the second switch component is different;

the second tuning module 20 has a third impedance when the first tuning module 16 has the first impedance and the second impedance.

In the embodiment of the present disclosure, a second tuning module is connected between the second frame connecting point and the second grounding point, and when the switching state of the second switch component in the second tuning module is different, the second tuning module has different impedances.

It should be noted that the second tuning module is connected between the second frame connecting point and the second grounding point, and the second tuning module can have different impedances by the switching state of the second switch component in the second tuning module, so that the transmission length of the effective signal in the antenna can be changed by the switching state of the second switch component in the second tuning module, and the antenna can receive and transmit wireless signals of different frequency bands.

In the embodiment of the disclosure, when the first tuning module has the first impedance and the second impedance in the terminal device, the second tuning module has the third impedance. That is, when the antenna receives and transmits a wireless signal of a first frequency band, the first tuning module has a first impedance and the second tuning module has a third impedance by adjusting the first switch component of the first tuning module and the second switch component of the second tuning module; when the antenna receives and transmits the wireless signal of the second frequency band, the first tuning module can have the second impedance and the second tuning module can have the third impedance by adjusting the first switch component of the first tuning module and the second switch component of the second tuning module.

Illustratively, the second tuning module may be a packaged tuner of a particular model, for example, including but not limited to, QAT3518.

Illustratively, the first tuning module may be an unpackaged tuner using one or more components, not limited to the QAT3518.

It can be understood that, by adjusting the first switch component of the first tuning module and the second switch component of the second tuning module, the antenna can receive and transmit the wireless signal of the first frequency band or the wireless signal of the second frequency band, and further, the antenna can receive and transmit the wireless signals of different frequency bands.

In one embodiment, the second tuning module further has a fourth impedance and a fifth impedance; the impedance values of the fifth impedance and the fourth impedance are different.

When the second tuning module has the fourth impedance and the first tuning module has the first impedance, the antenna is used for receiving and transmitting wireless signals of a third frequency band.

When the second tuning module has the fifth impedance and the first tuning module has the first impedance, the antenna is also used for receiving and transmitting wireless signals of a fourth frequency band.

It should be noted that, by adjusting the switch state of the first switch component of the first tuning module and the switch state of the second switch component of the second tuning module, the antenna can receive and transmit the wireless signal of the third frequency band or the wireless signal of the fourth frequency band.

It can be understood that, the embodiments of the present disclosure can enable the antenna to receive and transmit wireless signals of different frequency bands by the mutual cooperation of the first tuning module and the second tuning module.

In one embodiment, the second switch assembly comprises: the four controlled switches are connected in parallel and respectively comprise a fourth controlled switch, a fifth controlled switch, a sixth controlled switch and a seventh controlled switch;

under the condition that the fifth controlled switch is in a closed state and the fourth controlled switch, the sixth controlled switch and the seventh controlled switch are in an open state, the second tuning module has a fourth impedance;

and under the condition that the sixth controlled switch is in a closed state and the fourth controlled switch, the fifth controlled switch and the seventh controlled switch are in closed and open states, the second tuning module has a fifth impedance.

And under the condition that the fourth controlled switch is in a closed state and the fifth controlled switch, the sixth controlled switch and the seventh controlled switch are in an open state, the second tuning module has a third impedance.

It should be noted that the second switch assembly includes four parallel controlled switches. Four parallel controlled switches can be combined to obtain 16 switch states, and the corresponding second tuning module can have 16 different impedances.

In one embodiment, as shown in fig. 5, the second tuning module comprises:

a resistor having one end connected to the fourth controlled switch 20a and the other end connected to the second ground point;

a first inductor having one end connected to the fifth controlled switch 20b and the other end connected to the second ground point;

a third capacitor, one end of which is connected to the sixth controlled switch 20c and the other end of which is connected to the second ground point;

and a fourth capacitor having one end connected to the seventh controlled switch 20d and the other end connected to the second ground point.

In the embodiment of the disclosure, the impedance components connected in series correspondingly can be connected to the second frame connecting point and the second grounding point through the switching states of the controlled switches in the fourth controlled switch, the fifth controlled switch, the sixth controlled switch and the seventh controlled switch, so that the second tuning module has different impedances.

In the actual design process, more switch state combinations can be obtained by arranging a plurality of second tuning modules, and further, impedance adjustment in a wider range is realized, so that terminal equipment can receive and transmit wireless signals in more frequency bands. For example, two second tuning modules, three second tuning modules, or four second tuning modules may be provided, and embodiments of the present disclosure are not limited.

As shown in fig. 6, two second tuning modules 20 are disposed between the first frame connecting point and the first grounding point, and each of the two second tuning modules 20 includes four controlled switches, namely a fourth controlled switch 20a, a fifth controlled switch 20b, a sixth controlled switch 20c and a seventh controlled switch 20d. By changing the controlled switches in the two second tuning modules 20, 256 switch combination states can be obtained, so that the terminal device can obtain the required transceiving frequency band by selecting different switch combination states.

It should be noted that, when the antenna receives and transmits a wireless signal of the first frequency band, the first tuning module may be set to have a first impedance, and a fourth controlled switch in the two second tuning modules is in a closed state and connected to a resistor connected in series with the fourth controlled switch; when the antenna receives and transmits the first frequency band wireless signal, the first tuning module can be set to have second impedance, and a fourth controlled switch in the two second tuning modules is in a closed state and is connected with a resistor connected in series with the fourth controlled switch.

Exemplarily, the resistor connected in series with the fourth controlled switch may be set to 0 ohm, that is, when the second frame connecting point is directly connected to the second grounding point and the first tuning module is a first impedance, the antenna receives and transmits the first frequency band wireless signal; when the second frame connecting point is directly connected to the second grounding point and the first tuning module is the second impedance, the antenna receives and transmits the second frequency band wireless signal.

It can be understood that, through the combination of the switch states of the first tuning module and the second tuning module, the antenna can receive and transmit wireless signals of different frequency bands.

As shown in fig. 7, the antenna can transmit and receive radio signals in the low frequency band, the intermediate frequency band, and the high frequency band in 4G, and can also transmit and receive radio signals in the bands corresponding to N78 and N79 in Sub 6G. The low frequency band may be a band corresponding to B5 and B8, the B5 may correspond to a band from 824MHz to 849MHz, and the B8 may correspond to a band from 880MHz to 915 MHz; the intermediate frequency band may be B1 and B3, the B1 band may correspond to 1920MHz to 1980MHz, and the B3 band may correspond to 1710MHz to 1785MHz; the high frequency band can be the frequency band corresponding to B7 and B40, the B7 can correspond to the frequency band from 2500MHz to 2570MHz, and the B40 can correspond to the frequency band from 2300MHz to 2400 MHz; n78 may correspond to a band of 3300MHz to 3 MHz; n79 may correspond to the 4400MHz to 5000MHz frequency band.

As shown in fig. 8, the antennas have different efficiencies in transceiving radio signals of different frequency bands. On the premise that the antenna receives and transmits wireless signals of a frequency band corresponding to N79, if the frequency of the antenna is 4.6799GHz, the antenna efficiency is-7.3867 dB, and if the frequency of the antenna is 1.8211GHz, the antenna efficiency is-5.9112 dB; on the premise that an antenna receives and transmits a wireless signal of a frequency band corresponding to B7, if the frequency of the antenna is 2.8143GHz, the efficiency of the antenna is-6.1901 dB; on the premise that the antenna receives and transmits the wireless signals of the frequency band corresponding to the B5, if the frequency of the antenna is 0.87868GHz, the efficiency of the antenna is-8.5573 dB; on the premise that the antenna receives and transmits the wireless signals of the frequency band corresponding to the B3, if the frequency of the antenna is 3.6644GHz, the efficiency of the antenna is-6.7703 dB; on the premise that the antenna receives and transmits the wireless signals of the frequency band corresponding to the B1, if the antenna frequency is 2.0096GHz, the antenna efficiency is-6.1964 dB.

In one embodiment, as shown in fig. 9, the housing is a rectangular housing, and the housing includes a first short frame 101, a second long frame 102 and a third long frame 103, the first short frame 101 is connected to the second long frame 102 and the third long frame 103, respectively, and the second long frame 102 and the third long frame 103 are oppositely disposed frames;

at least part of the first short border 101 is a conductive border 104.

Illustratively, the length of the conductive bezel is between 15 millimeters and 25 millimeters.

It can be understood that, the frame of the housing is used as the conductive frame to receive and transmit the wireless signals, so that the space occupied by the antenna on the terminal equipment can be saved, and the space utilization rate can be improved.

In one embodiment, as shown in fig. 9, a slit 105 is provided on the first short frame, and the first ground point 14 is disposed between the slit 105 and the second frame connecting point 102.

It should be noted that the width of the slit is related to the wavelength of the radiated wireless signal, and the slit can be used for receiving the wireless signal and/or radiating the wireless signal.

Illustratively, the width of the slit may be 0.8mm to 3mm.

In one embodiment, as shown in fig. 10, the terminal device further includes:

and the screen 106 is arranged on the shell, and the distance between the screen 106 and the first short frame 101 is a preset distance.

In the embodiment of the present disclosure, the screen may be disposed to surround the second long frame and the third long frame of the housing, that is, the screen on the terminal is a surrounding screen. In the case of surrounding the screen, the distance between the screen and the first short frame on the terminal device may be set to a preset distance.

It should be noted that the preset distance may be in a range from 0.6 mm to 0.8mm, for example, the preset distance may be 0.8mm, and the embodiment of the disclosure is not limited.

It can be understood that the conductive frame in the housing of the embodiment of the present disclosure serves as part of the antenna, and only a few frames of the housing need to be occupied, so that wireless signals of different frequency bands can be received and transmitted, and more space can be reserved for other devices in the terminal device, for example, the remaining frames can be used for supplying power to other adjacent antennas, and further, the space utilization rate of the terminal device can be improved.

It should be noted that "first", "second", "third", "fourth" and "fifth", "sixth" and "seventh" in the embodiments of the present disclosure are merely for convenience of description and distinction, and have no other specific meanings.

Fig. 11 is a block diagram illustrating a terminal device according to an example embodiment. For example, the terminal device may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.

Referring to fig. 11, the terminal device may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the terminal device, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the terminal device. Examples of such data include instructions for any application or method operating on the terminal device, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices, 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 memory, flash memory, magnetic or optical disks.

The power component 806 provides power to various components of the terminal device. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal device.

The multimedia component 808 includes a screen that provides an output interface between the terminal device and the 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 touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. When the terminal device is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

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

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 814 includes one or more sensors for providing various aspects of state assessment for the terminal device. For example, sensor assembly 814 may detect the open/closed status of the terminal device, the relative positioning of components, such as a display and keypad of the terminal device, the change in position of the terminal device or a component of the terminal device, the presence or absence of user contact with the terminal device, the orientation or acceleration/deceleration of the terminal device, and the change in temperature of the terminal device. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The 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, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the terminal device and other devices in a wired or wireless manner. The terminal device may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. 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.

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, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

Other embodiments of the invention will be apparent to those skilled in the art from 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 following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A terminal device, characterized in that the terminal device comprises at least:

a first tuning module connected between the feeding point and the first frame connecting point, the first tuning module including a first switch component, the first tuning module having different impedances when the first switch component is in different switch states; the first tuning module further comprises: the detection component is connected between the first frame connecting point and the feeding point and is used for detecting the current impedance of the antenna; the processing circuit is respectively connected with the detection circuit and the first switch component, and generates a control instruction based on the current impedance and the target matching impedance, wherein the control instruction is used for controlling the switch state of the first switch component;

2. The terminal device of claim 1, wherein the first tuning module has a first impedance, and the antenna is capable of transceiving wireless signals in a first frequency band; the first tuning module is provided with a second impedance, and the antenna can receive and transmit wireless signals of a second frequency band.

3. The terminal device of claim 2, wherein the first switch assembly comprises:

4. The terminal device according to claim 3, wherein the terminal device further comprises:

the first capacitor is connected with the conductive frame through the first connecting frame point;

the inductor is connected to the rear end of the first capacitor;

the first tuning module further comprises:

a second capacitor connected between the inductor and the feeding point;

one end of the second controlled switch is connected between the first controlled switch and the second capacitor, and the other end of the second controlled switch is connected with the second grounding point;

and one end of the third controlled switch is connected between the second capacitor and the feeding point, and the other end of the third controlled switch is connected with the second grounding point.

5. The terminal device according to any one of claims 2 to 4, wherein the terminal device further comprises:

when the first tuning module has the first impedance or the second impedance, the second tuning module has a third impedance;

6. The terminal device of claim 5, wherein the second tuning module further has a fifth impedance, and wherein the antenna is further configured to transceive wireless signals in a fourth frequency band when the second tuning module has the fifth impedance and the first tuning module has the first impedance.

7. The terminal device of claim 6, wherein the second switch assembly comprises: the four parallel controlled switches are respectively a fourth controlled switch, a fifth controlled switch, a sixth controlled switch and a seventh controlled switch; when a fifth controlled switch is in a closed state and the fourth controlled switch, the sixth controlled switch and a seventh controlled switch are in an open state, the second tuning module has the fourth impedance;

8. The terminal device of claim 7, wherein the second tuning module has the third impedance when the fourth controlled switch is in a closed state and the fifth, sixth, and seventh controlled switches are in an open state.

9. The terminal device according to claim 1, wherein the housing is a rectangular housing, the housing includes a first short frame, a second long frame and a third long frame, the first short frame is connected to the second long frame and the third long frame, respectively, and the second long frame and the third long frame are oppositely disposed frames;

at least part of the first short frame is the conductive frame.

10. The terminal device according to claim 9, wherein a slit is provided on the first short frame; the first grounding point is arranged between the slit and the second frame connecting point.