Antenna structure and terminal device applied to terminal device

Abstract

The present application provides an antenna structure and a terminal device applied to a terminal device. The method includes: a plurality of antenna units are connected through a switching circuit; each antenna unit transmits a signal of a frequency band corresponding to each antenna unit; each switching circuit includes a connected antenna tuning switch and a low-pass filter, and the frequency bands of the signals allowed to pass by the low-pass filter in each switching circuit are different; when the first antenna unit transmits a signal of the first frequency band, the antenna tuning switch in each switching circuit is closed according to the received first signal, thereby making each antenna unit conductive. The present application can adjust the electrical length of the antenna structure to achieve the purpose of tuning; a low-pass filter is used to reduce the transmission of redundant harmonics and improve the transmission performance of the antenna.

Description

Technical Field

[0001] The present application relates to the technical field of terminal equipment, and in particular to an antenna structure applied to a terminal equipment and a terminal equipment. Background Art

[0002] In the terminal device, the built-in antenna can be used, and the terminal device can communicate under multiple frequency band signals through the antenna. For example, the terminal device is a mobile device, and the mobile device performs radio communication under multiple frequency band signals based on the antenna.

[0003] In the prior art, an inductance conversion circuit can be connected to a position of the antenna far away from the feeding point, so that the antenna can form a multi-part resonant circuit, and then the terminal device can communicate under multiple frequency band signals through the antenna.

[0004] However, in the above process, the reactance conversion circuit is connected at a position of the antenna far away from the feeding point, which will generate redundant harmonics during the communication process, thereby reducing the transmission performance of the antenna and affecting the communication quality. Summary of the invention

[0005] The present application provides an antenna structure and a terminal device applied to a terminal device, so as to solve the problem of generating redundant harmonics leading to reduced antenna transmission performance.

[0006] In a first aspect, an embodiment of the present application provides an antenna structure applied to a terminal device, the antenna structure comprising: N antenna units and N-1 switch circuits, N being an integer greater than or equal to 2; the i-th antenna unit among the N antenna units and the i+1-th antenna unit among the N antenna units are connected via the j-th switch circuit; wherein i is an integer greater than or equal to 1 and less than or equal to N; j is an integer greater than or equal to 1 and less than or equal to N-1;

[0007] Each of the N antenna units is used to transmit a signal of a frequency band corresponding to each antenna unit;

[0008] Each of the N-1 switch circuits includes an antenna tuning switch and a low-pass filter; the low-pass filter in the j-th switch circuit is used to pass a signal whose frequency band is less than or equal to the i-th frequency band, and the frequency of the i-th frequency band is less than the frequency of the i+1-th frequency band;

[0009] When the first antenna unit transmits a signal of the first frequency band, the antenna tuning switch in each switching circuit is closed based on the received first signal to enable conduction between the i-th antenna unit and the i+1-th antenna unit; wherein the first signal is a signal instructing the antenna tuning switch to be closed.

[0010] Furthermore, one end of the i-th antenna unit is connected to one end of the antenna tuning switch in the j-th switching circuit, and the other end of the antenna tuning switch in the j-th switching circuit is connected to one end of the i+1-th antenna unit through a low-pass filter in the j-th switching circuit.

[0011] Furthermore, one end of the i-th antenna unit is connected to one end of the low-pass filter in the j-th switching circuit, and the other end of the low-pass filter in the j-th switching circuit is connected to one end of the i+1-th antenna unit through the antenna tuning switch in the j-th switching circuit.

[0012] Furthermore, when the first antenna unit transmits a signal higher than the first frequency band, the antenna tuning switch in each switching circuit is disconnected based on the received second signal to disconnect the conduction between the i-th antenna unit and the i+1-th antenna unit; wherein the second signal is a signal instructing the antenna tuning switch to disconnect.

[0013] Furthermore, the second signal is sent by the controller in the terminal device when the first antenna unit transmits a signal higher than the first frequency band.

[0014] Furthermore, each antenna unit except the first antenna unit is grounded through a first high-pass filter corresponding to each antenna unit; and each antenna unit except the first antenna unit is connected to a feeding circuit corresponding to each antenna unit through a second high-pass filter corresponding to each antenna unit.

[0015] Further, the first antenna unit is grounded, and the first antenna unit is connected to the first feeding circuit.

[0016] Furthermore, the first signal is sent by the controller in the terminal device when transmitting a signal of the first frequency band based on the first antenna unit.

[0017] Furthermore, the antenna tuning switch is a single-pole single-throw switch.

[0018] In a second aspect, an embodiment of the present application provides a terminal device, in which the antenna structure applied to the terminal device as described in the first aspect is provided.

[0019] The present application provides an antenna structure and terminal device applied to a terminal device, wherein a plurality of antenna units are connected through a switching circuit; each antenna unit transmits a signal of a frequency band corresponding to each antenna unit; each switching circuit includes a connected antenna tuning switch and a low-pass filter, and the frequency bands of the signals allowed to pass by the low-pass filter in each switching circuit are different; when the first antenna unit transmits a signal of the first frequency band, the antenna tuning switch in each switching circuit is closed according to the received first signal, thereby making each antenna unit in a conductive state. Since a switching circuit is set between the plurality of antenna units, each switching circuit includes a connected antenna tuning switch and a low-pass filter, and the antenna tuning switch in each switching circuit is closed according to the received first signal, thereby making each antenna unit in a conductive state; in addition, the electrical length of the antenna structure can be adjusted to achieve the purpose of tuning; a low-pass filter is used to reduce the transmission of redundant harmonics and improve the transmission performance of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] Figure 1 A schematic diagram of an antenna structure applied to a terminal device provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 1 ;

[0023] Figure 3 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 2 ;

[0024] Figure 4 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 3 ;

[0025] Figure 5 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 1 ;

[0026] Figure 6 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 2 ;

[0027] Figure 7 The present invention is a block diagram of a terminal device according to an exemplary embodiment.

[0028] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0029] Description of reference numerals:

[0030] 11: antenna unit;

[0031] 12: Switching circuit;

[0032] 13: Antenna tuning switch;

[0033] 14: low pass filter;

[0034] 15: first high pass filter;

[0035] 16: Second high pass filter;

[0036] 17: Feeding circuit;

[0037] 818: Antenna structure. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0039] In the existing technology, when tuning the built-in antenna used in the terminal device, the reactance transformation can be introduced at the end of the antenna or far away from the feeding point to make the antenna form a multi-part resonant circuit, and the resonance value of some resonant circuits can be changed to achieve the tuning purpose; or, by introducing the reactance transformation near the feeding point, the antenna with a fixed electrical length can be matched to the required frequency point to achieve the tuning purpose.

[0040] However, in the above-mentioned manner, the reactance conversion circuit is connected at a position of the antenna far away from the feeding point, which will generate redundant harmonics during the communication process, thereby reducing the transmission performance of the antenna and affecting the communication quality.

[0041] The present application provides an antenna structure and a terminal device applied to a terminal device, aiming to solve the above technical problems of the prior art.

[0042] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0043] Figure 1 A schematic diagram of an antenna structure applied to a terminal device provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the antenna structure includes:

[0044] N antenna units 11 and N-1 switch circuits 12, N is an integer greater than or equal to 2; the i-th antenna unit 11 among the N antenna units 11 and the i+1-th antenna unit 11 among the N antenna units 11 are connected via the j-th switch circuit 12; wherein i is an integer greater than or equal to 1 and less than or equal to N; and j is an integer greater than or equal to 1 and less than or equal to N-1.

[0045] Each antenna unit 11 among the N antenna units 11 is used to transmit a signal of a frequency band corresponding to each antenna unit 11 .

[0046] Each of the N-1 switching circuits 12 includes an antenna tuning switch 13 and a low-pass filter 14; the low-pass filter 14 in the j-th switching circuit 12 is used to pass signals with a frequency band less than or equal to the i-th frequency band, and the frequency of the i-th frequency band is less than the frequency of the i+1-th frequency band.

[0047] When the first antenna unit 11 transmits a signal of the first frequency band, the antenna tuning switch 13 in each switching circuit 12 is closed based on the received first signal to enable conduction between the i-th antenna unit 11 and the (i+1)-th antenna unit 11, wherein the first signal is a signal instructing the antenna tuning switch to be closed.

[0048] Exemplarily, an antenna structure needs to be set in the terminal device, and then the terminal device completes the communication process through the antenna structure. The antenna structure is composed of N antenna units 11 and N-1 switch circuits 12, where N is an integer greater than or equal to 2. A switch circuit 12 is set between adjacent antenna units 11; that is, a j-th switch circuit 12 is set between the i-th antenna unit 11 and the i+1-th antenna unit 11, one end of the i-th antenna unit 11 is connected to one end of the j-th switch circuit 12, and the other end of the j-th switch circuit 12 is connected to one end of the j-th antenna unit 11, and then the i-th antenna unit 11 and the i+1-th antenna unit 11 are connected through the j-th switch circuit 12. i is an integer greater than or equal to 1 and less than or equal to N; j is an integer greater than or equal to 1 and less than or equal to N-1.

[0049] Exemplarily, the frequency band of the signal transmitted by each antenna unit 11 can be preset in advance, and the signal transmitted by each antenna unit 11 is a signal of the frequency band corresponding to each antenna unit 11, which can be a low frequency band, a medium frequency band, or a high frequency band.

[0050] Optionally, except for the first antenna unit 11, the frequency band of the signal used for transmission by the i-th antenna unit 11 may be lower than the frequency band of the signal used for transmission by the i+1-th antenna unit 11; or, the frequency band of the signal used for transmission by the i-th antenna unit 11 may be equal to the frequency band of the signal used for transmission by the i+1-th antenna unit 11.

[0051] Exemplarily, in the N−1 switch circuits 12 , each switch circuit 12 includes an antenna tuning switch 13 and a low-pass filter 14 , and one end of the antenna tuning switch 13 is connected to one end of the low-pass filter 14 .

[0052] The low-pass filter 14 in the j-th switching circuit 12 is used to pass signals with a frequency band less than or equal to the ith frequency band. The frequency bands of the signals allowed to pass by the low-pass filter 14 in each switching circuit 12 may be different, that is, in the order of connection, the frequency of the ith frequency band may be less than the frequency of the i+1th frequency band, and the frequency bands of the signals allowed to pass by each low-pass filter 14 increase sequentially; or, the frequency bands of the signals allowed to pass by each low-pass filter 14 may be set to be the same; or, the frequency bands of the signals allowed to pass by some low-pass filters 14 may be set to be the same.

[0053] The present application does not impose any limitation on the connection sequence between the antenna tuning switch 13 , the low-pass filter 14 , and two adjacent antenna units 11 .

[0054] In one example, four antenna units 11 can be set in the antenna structure. Except for the first antenna unit 11, the frequency band of the signal transmitted by the second antenna unit 11 can be lower than the frequency band of the signal transmitted by the third antenna unit 11; the frequency band of the signal transmitted by the third antenna unit 11 can be lower than the frequency band of the signal transmitted by the fourth antenna unit 11; and so on.

[0055] In another example, four antenna units 11 can be set in the antenna structure. Except for the first antenna unit 11, the frequency band of the signal transmitted by the second antenna unit 11 can be equal to the frequency band of the signal transmitted by the third antenna unit 11; the frequency band of the signal transmitted by the third antenna unit 11 can be equal to the frequency band of the signal transmitted by the fourth antenna unit 11. In this way, by setting a low-pass filter 14 and utilizing the signal cutoff effect of the low-pass filter 14, redundant harmonics can be removed.

[0056] Exemplarily, when the first antenna unit 11 transmits a signal of the first frequency band, the controller in the terminal device sends a first signal when transmitting the signal of the first frequency band to the first antenna unit 11, and the antenna tuning switch 13 in each switch circuit 12 is closed according to the received first signal, thereby making the i-th antenna unit 11 and the i+1-th antenna unit conductive, so that the antenna tuning switches 13 in each switch circuit 12 are all closed. Thus, on the one hand, the conductive i-th antenna unit 11 and the i+1-th antenna unit 11 can work under the signal of the first frequency band; at the same time, on the other hand, because the low-pass filter 14 in the j-th switch circuit 12 is used to pass the signal with a frequency band less than or equal to the i-th frequency band, the i+1-th antenna unit 11 can work under the signal of the i+1-th frequency band.

[0057] The first signal is a signal instructing the antenna tuning switch to close.

[0058] In one example, two antenna units 11 and a switch circuit 12 may be provided in the antenna structure. Starting from the first antenna unit 11, each antenna unit 11 transmits signals of the corresponding frequency band in turn. When the first antenna unit 11 transmits signals of the first frequency band, the control end of the device sends a corresponding first signal to the antenna tuning switch 13 in the switch circuit 12, i.e., a control signal that can instruct the antenna tuning switch 13 to close. The antenna tuning switch 13 in the switch circuit 12 closes according to the received first signal, and each antenna tuning switch 13 is in a closed state. If the signal of the first frequency band is lower than the signal allowed to pass by the first low-pass filter, the two antenna units 11 are in a conductive state, and the signals transmitted on the two antenna units 11 can be signals of the first frequency band, and the second antenna unit 11 transmits signals of the second frequency band; further, the two antenna units 11 can be regarded as a whole working under the first frequency band signal; at the same time, the second antenna unit 11 can also work under the second frequency band, i.e., the second antenna unit 11 is a shared antenna part.

[0059] In one example, three antenna units 11 and two switch circuits 12 can be set in the antenna structure. When the first antenna unit 11 transmits a signal of the first frequency band, the control end of the device sends a corresponding first signal to the antenna tuning switch 13 in each switch circuit 12, that is, a control signal that can instruct each antenna tuning switch 13 to close. The antenna tuning switch 13 in the switch circuit 12 is closed according to the received first signal. Each antenna tuning switch 13 is in a closed state, so that the first antenna unit 11, the second antenna unit 11 and The third antenna unit 11 is in a conductive state, and the signals transmitted on the first antenna unit 11, the second antenna unit 11 and the third antenna unit 11 are signals of the first frequency band; at the same time, since the signal of the second frequency band is lower than the signal allowed to pass by the second low-pass filter 4, the second antenna unit 11 and the third antenna unit 11 are in a conductive state, and the signals transmitted on the second antenna unit 11 and the third antenna unit 11 are signals of the second frequency band; in addition, the third antenna unit 11 can also transmit signals of the third frequency band. Furthermore, on the one hand, the three antenna units 11 can be regarded as a whole working under the first frequency band signal; multiple antenna units 11 can be regarded as a whole to achieve the purpose of increasing the electrical length of the antenna; on the other hand, the second antenna unit 11 and the third antenna unit 11 work under the second frequency band signal at the same time, and the third antenna unit 11 works under the third frequency band signal at the same time, that is, the second antenna unit 11 and the third antenna unit 11 are a shared antenna part, and the shared antenna part can transmit signals of multiple frequency bands at the same time, thereby achieving the effect of communication using the shared antenna.

[0060] In this embodiment, the antenna structure is composed of more than two antenna units 11, and at least one switching circuit 12 can be set between the more than two antenna units 11, and every two antenna units 11 are connected through a switching circuit 12; an antenna tuning switch 13 and a low-pass filter 14 are set in each switching circuit 12, and the antenna tuning switch 13 and the low-pass filter 14 are in a directly connected state; the frequency band of the signal transmitted by each antenna unit 11 can be preset in advance, and the signal transmitted by each antenna unit 11 is a signal of the frequency band corresponding to the antenna unit 11; when the first antenna unit 11 transmits the signal of the first frequency band, the antenna tuning switch 13 in each switching circuit 12 is closed according to the received first signal, so that the antenna units 11 connected to the two ends of the switching circuit 12 are in a conductive state. Since the switch circuit 12 connected between each antenna unit 11 is in the on state, the same antenna unit 11 can transmit signals of multiple frequency bands at the same time, which can achieve the purpose of increasing the electrical length of the antenna and realizing the effect of using a shared part of the antenna for communication; and, setting a low-pass filter 14 can filter out the excess harmonics generated by the antenna structure during operation, thereby improving the antenna transmission performance and improving the communication quality.

[0061] Figure 2 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 1 , Figure 3 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 2 , Figure 4 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 3 ,exist Figure 1 Based on the embodiment shown, Figure 2-Figure 4 As shown:

[0062] One end of the i-th antenna unit 11 is connected to one end of the antenna tuning switch 13 in the j-th switching circuit 12, and the other end of the antenna tuning switch 13 in the j-th switching circuit 12 is connected to one end of the i+1-th antenna unit 11 through the low-pass filter 14 in the j-th switching circuit 12.

[0063] Alternatively, one end of the i-th antenna unit 11 is connected to one end of the low-pass filter 14 in the j-th switching circuit 12, and the other end of the low-pass filter 14 in the j-th switching circuit 12 is connected to one end of the i+1-th antenna unit 11 through the antenna tuning switch 13 in the j-th switching circuit 12.

[0064] In one example, when the first antenna unit 11 transmits a signal higher than the first frequency band, the antenna tuning switch 13 in each switching circuit 12 is disconnected based on the received second signal to disconnect the conduction between the i-th antenna unit 11 and the (i+1)-th antenna unit 11; wherein the second signal is a control signal instructing the antenna tuning switch 13 to disconnect.

[0065] In one example, the second signal is sent by the controller in the terminal device when the first antenna unit 11 transmits a signal higher than the first frequency band.

[0066] In one example, each antenna unit 11 except the first antenna unit 11 is grounded through a first high-pass filter 15 corresponding to each antenna unit 11; and each antenna unit 11 except the first antenna unit 11 is connected to a feeding circuit 17 corresponding to each antenna unit 11 through a second high-pass filter 16 corresponding to each antenna unit 11.

[0067] In one example, the first antenna unit 11 is grounded, and the first antenna unit 11 is connected to the first feeding circuit 17 .

[0068] In one example, the first signal is sent by a controller in the terminal device when the first antenna unit 11 transmits a signal in the first frequency band.

[0069] In one example, the antenna tuning switch 13 is a single-pole single-throw switch.

[0070] For example, Figure 2 As shown, among the multiple antenna units 11, one end of the i-th antenna unit 11 can be connected to one end of the antenna tuning switch 13 in the j-th switching circuit 12, the other end of the antenna tuning switch 13 in the j-th switching circuit 12 is connected to one end of the low-pass filter 14 in the j-th switching circuit 12, and the other end of the low-pass filter 14 in the j-th switching circuit 12 is connected to one end of the i+1-th antenna unit 11.

[0071] Or, if Figure 3 As shown, among the multiple antenna units 11, one end of the i-th antenna unit 11 is connected to one end of the low-pass filter 14 in the j-th switching circuit 12, the other end of the low-pass filter 14 in the j-th switching circuit 12 is connected to one end of the antenna tuning switch 13 in the j-th switching circuit 12, and the other end of the antenna tuning switch 13 in the j-th switching circuit 12 is connected to one end of the i+1-th antenna unit 11.

[0072] Or, if Figure 4 As shown, among multiple antenna units 11, in a part of the antenna units 11, one end of the i-th antenna unit 11 can be connected to one end of the antenna tuning switch 13 in the j-th switching circuit 12, the other end of the antenna tuning switch 13 in the j-th switching circuit 12 is connected to one end of the low-pass filter 14 in the j-th switching circuit 12, and the other end of the low-pass filter 14 in the j-th switching circuit 12 is connected to one end of the i+1-th antenna unit 11; in another part of the antenna units 11, one end of the i+1-th antenna unit 11 is connected to one end of the low-pass filter 14 in the j+1-th switching circuit 12, the other end of the low-pass filter 14 in the j+1-th switching circuit 12 is connected to one end of the antenna tuning switch 13 in the j+1-th switching circuit 12, and the other end of the antenna tuning switch 13 in the j+1-th switching circuit 12 is connected to one end of the i+2-th antenna unit 11.

[0073] The length of each antenna unit 11 is a preset length determined according to actual application requirements.

[0074] Based on the above structure, when the first antenna unit 11 transmits a signal higher than the first frequency band, the control end of the device will send a corresponding second signal to the antenna tuning switch 13 in each switching circuit 12, that is, a control signal that can instruct each antenna tuning switch 13 to disconnect. The antenna tuning switch 13 in each switching circuit 12 can receive the second signal, and the antenna tuning switch 13 in each switching circuit 12 disconnects based on the received second signal, so that each antenna unit 11 is in a disconnected state.

[0075] For example, the antenna structure includes three antenna units 11 and two switching circuits 12. When the first antenna unit 11 transmits a signal higher than the first frequency band, the antenna tuning switch 13 in each switching circuit 12 is disconnected based on the received second signal to disconnect each antenna unit 11, so that the first antenna unit 11, the second antenna unit 11 and the third antenna unit 11 respectively transmit signals of corresponding frequency bands, and then the three antenna units 11 work independently under their respective frequency band signals without affecting each other.

[0076] When the first antenna unit 11 transmits a signal, based on the first antenna unit 11 transmitting a signal higher than the first frequency band, the controller in the terminal device can send a second signal to the antenna tuning switch 13 in each switching circuit 12, and the second signal can control the antenna tuning switch 13 in each switching circuit 12 to disconnect, that is, the antenna tuning switch 13 in each switching circuit 12 is in a disconnected state after receiving the second signal.

[0077] Furthermore, in the antenna structure, each antenna unit 11 except the first antenna unit can be connected to one end of the first high-pass filter 15 corresponding to each antenna unit 11, and the other end of the first high-pass filter 15 corresponding to each antenna unit 11 is grounded; and, each antenna unit 11 except the first antenna unit can be connected to one end of the second high-pass filter 16 corresponding to each antenna unit 11 except the first antenna unit 11, and the other end of the second high-pass filter 16 corresponding to each antenna unit 11 except the first antenna unit 11 is connected to the feeding circuit 17 corresponding to each antenna unit 11 except the first antenna unit 11.

[0078] The first antenna unit 11 may be grounded, and the first antenna unit 11 may be connected to the first feeding circuit 17 , and the i-th antenna unit 11 may be connected to the i-th feeding circuit 17 .

[0079] Optionally, when the first antenna unit 11 transmits a signal, based on the first antenna unit 11 transmitting a signal of the first frequency band, the controller in the terminal device can send a first signal to the antenna tuning switch 13 in each switching circuit 12, and the first signal can control the antenna tuning switch 13 in each switching circuit 12 to close, that is, the antenna tuning switch 13 in each switching circuit 12 is in an on state after receiving the first signal.

[0080] In the antenna structure, each switch circuit 12 includes an antenna tuning switch 13, wherein the type of the antenna tuning switch 13 can be a single-pole single-throw switch (SPST), and each antenna tuning switch 13 can be in an open or closed state according to different control signals received.

[0081] In this embodiment, on the basis of the above embodiment, one end of the i-th antenna unit 11 in the antenna structure is connected to one end of the antenna tuning switch 13 in the j-th switching circuit 12, and the other end of the antenna tuning switch 13 in the j-th switching circuit 12 is connected to one end of the i+1-th antenna unit 11 through the low-pass filter 14 in the j-th switching circuit 12; when the first antenna unit 11 transmits a signal higher than the first frequency band, the antenna tuning switch 13 in each switching circuit 12 is disconnected based on the received second signal to disconnect the conduction between the i-th antenna unit 11 and the i+1-th antenna unit 11; thereby, each antenna unit 11 can work independently under its own frequency band signal without affecting each other.

[0082] Figure 5 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 1 , Figure 6 A schematic diagram of another antenna structure applied to a terminal device provided in an embodiment of the present application Figure 2 ,exist Figure 1 and Figure 2 Based on the embodiment shown, Figure 5-Figure 6 As shown:

[0083] In an antenna structure, multiple antenna units 11, multiple antenna tuning switches 13, multiple low-pass filters 14, multiple first high-pass filters 15, multiple second high-pass filters 16 and multiple feeding circuits 17 are connected. Specifically, it can be composed of components such as capacitors, inductors, resistors, switches and grounding, which are not limited here.

[0084] For example, Figure 5As shown, an antenna structure includes multiple antenna units 11. Among the multiple antenna units 11, one end of the i-th antenna unit 11 can be connected to one end of the antenna tuning switch 13 in the j-th switching circuit 12, the other end of the antenna tuning switch 13 in the j-th switching circuit 12 is connected to one end of the low-pass filter 14 in the j-th switching circuit 12, and the other end of the low-pass filter 14 in the j-th switching circuit 12 is connected to one end of the i+1-th antenna unit 11.

[0085] Or, if Figure 6 As shown, an antenna structure includes multiple antenna units 11. Among the multiple antenna units 11, one end of the i-th antenna unit 11 is connected to one end of the low-pass filter 14 in the j-th switching circuit 12, the other end of the low-pass filter 14 in the j-th switching circuit 12 is connected to one end of the antenna tuning switch 13 in the j-th switching circuit 12, and the other end of the antenna tuning switch 13 in the j-th switching circuit 12 is connected to one end of the i+1-th antenna unit 11.

[0086] Furthermore, when the first antenna unit 11 transmits a signal of the first frequency band, based on the fact that the first antenna unit 11 transmits a signal lower than the first frequency band, the controller in the terminal device can send a first signal to the antenna tuning switch 13 in each switching circuit 12, and the antenna tuning switch 13 in each switching circuit 12 is in an on state after receiving the first signal.

[0087] Alternatively, when the first antenna unit 11 transmits a signal higher than the first frequency band, the antenna tuning switch 13 in each switching circuit 12 can receive a second signal, and the antenna tuning switch 13 in each switching circuit 12 is disconnected based on the received second signal to disconnect each antenna unit 11.

[0088] When the first antenna unit 11 transmits a signal of the first frequency band, the controller in the terminal device may send a second signal to the antenna tuning switch 13 in each switching circuit 12 based on the first antenna unit 11 transmitting a signal higher than the first frequency band.

[0089] Furthermore, in the antenna structure, each antenna unit 11 except the first antenna unit 11 can be connected to one end of a first high-pass filter 15 corresponding to each antenna unit 11 except the first antenna unit 11, and the other end of the first high-pass filter 15 corresponding to each antenna unit 11 except the first antenna unit 11 is grounded; and, each antenna unit 11 except the first antenna unit 11 can be connected to one end of a second high-pass filter 16 corresponding to each antenna unit 11 except the first antenna unit 11, and the other end of the second high-pass filter 16 corresponding to each antenna unit 11 except the first antenna unit 11 is connected to a feeding circuit 17 corresponding to each antenna unit 11 except the first antenna unit 11.

[0090] The first antenna unit 11 may be grounded, and the first antenna unit 11 may be connected to the first feeding circuit 17, and the i-th antenna unit 11 may be connected to the i-th feeding circuit 17. In the antenna structure, the antenna tuning switch 13 in each switch circuit 12 may be a single-pole single-throw switch.

[0091] In this embodiment, on the basis of the above embodiment, multiple antenna units 11 can be set in one antenna structure, and one end of the first antenna unit 11 is connected to one end of the i-th antenna unit 11 through the antenna tuning switch 13 in the switch circuit 12 and the low-pass filter 14; when the signal transmitted by the first antenna unit 11 is higher than the signal of the first frequency band, the antenna tuning switch 13 in each switch circuit 12 is disconnected after receiving the second signal, so that each antenna unit 11 is in a disconnected state; in this way, each antenna unit 11 can work independently for the feeding circuit 17 connected to it, and does not affect each other; when the first antenna unit 11 transmits the signal of the first frequency band, the antenna tuning switch 13 in each switch circuit 12 is in a conducting state after receiving the first signal, so that one antenna unit 11 can transmit signals of multiple frequency bands at the same time, which can achieve the purpose of increasing the electrical length of the antenna and realizing the effect of using a shared part of the antenna for communication; and the low-pass filter 14 is set to filter out the redundant harmonics generated by the antenna structure when it is working, thereby improving the antenna transmission performance and the communication quality.

[0092] An embodiment of the present application provides a terminal device, in which an antenna structure applied to the terminal device as provided in the above embodiment is provided.

[0093] Figure 71 is a block diagram of a terminal device according to an exemplary embodiment, and the device may be a mobile phone, a computer, a digital broadcast terminal, a message transceiver device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc. The terminal device is provided with an antenna structure 818 applied to the terminal device as provided in the above embodiment.

[0094] The device 800 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 .

[0095] The processing component 802 generally controls the overall operation of the device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0096] The memory 804 is configured to store various types of data to support operations on the device 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phone book data, messages, pictures, videos, etc. The 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 memory, flash memory, magnetic disk or optical disk.

[0097] The power supply component 806 provides power to the various components of the device 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 800.

[0098] The multimedia component 808 includes a screen that provides an output interface between the device 800 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 input signals from the 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 boundaries of the 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 camera and / or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may 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.

[0099] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the device 800 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0100] 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 button, volume button, start button, and lock button.

[0101] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the device 800. For example, the sensor assembly 814 can detect the open / closed state of the device 800, the relative positioning of components, such as the display and keypad of the device 800, the sensor assembly 814 can also detect the position change of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration / deceleration of the device 800 and the temperature change of the device 800. The sensor assembly 814 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 can also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 can also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.

[0102] The communication component 816 is configured to facilitate wired or wireless communication between the device 800 and other devices. The device 800 can 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 a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0103] In an exemplary embodiment, the apparatus 800 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 above method.

[0104] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by the processor 820 of the device 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0105] An embodiment of the present application also provides a non-temporary computer-readable storage medium, which, when instructions in the storage medium are executed by a processor of an electronic device, enables the electronic device to perform the above method.

[0106] According to an embodiment of the present application, the present application also provides a computer program product, which includes: a computer program, the computer program is stored in a readable storage medium, at least one processor of an electronic device can read the computer program from the readable storage medium, and at least one processor executes the computer program so that the electronic device executes the solution provided by any of the above embodiments.

[0107] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0108] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An antenna structure applied to a terminal device, characterized in that: The antenna structure includes: N antenna units and N-1 switch circuits, where N is an integer greater than 2; the i-th antenna unit among the N antenna units is connected to the i+1-th antenna unit among the N antenna units via the j-th switch circuit; wherein i is an integer greater than or equal to 1 and less than or equal to N; and j is an integer greater than or equal to 1 and less than or equal to N-1; Each of the N antenna units is used to transmit a signal of a frequency band corresponding to each antenna unit; Each of the N-1 switch circuits includes an antenna tuning switch and a low-pass filter; the low-pass filter in the j-th switch circuit is used to pass a signal whose frequency band is less than or equal to the i-th frequency band, and the frequency of the i-th frequency band is less than the frequency of the i+1-th frequency band; When the first antenna unit transmits a signal of the first frequency band, the antenna tuning switch in each switch circuit is closed based on the received first signal to conduct between the i-th antenna unit and the (i+1)-th antenna unit; wherein the first signal is a signal instructing the antenna tuning switch to be closed, and the first signal is sent by the controller in the terminal device when the signal of the first frequency band is transmitted based on the first antenna unit; When the first antenna unit transmits a signal higher than the first frequency band, the antenna tuning switch in each switching circuit is disconnected based on the received second signal to disconnect the conduction between the i-th antenna unit and the i+1-th antenna unit; wherein the second signal is a signal instructing the antenna tuning switch to disconnect, and the second signal is sent by the controller in the terminal device based on the first antenna unit transmitting a signal higher than the first frequency band.

2. The antenna structure according to claim 1, characterized in that: One end of the i-th antenna unit is connected to one end of the antenna tuning switch in the j-th switching circuit, and the other end of the antenna tuning switch in the j-th switching circuit is connected to one end of the i+1-th antenna unit via a low-pass filter in the j-th switching circuit.

3. The antenna structure according to claim 1, characterized in that: One end of the i-th antenna unit is connected to one end of the low-pass filter in the j-th switching circuit, and the other end of the low-pass filter in the j-th switching circuit is connected to one end of the i+1-th antenna unit through the antenna tuning switch in the j-th switching circuit.

4. The antenna structure according to claim 1, characterized in that: Each antenna unit except the first antenna unit is grounded through a first high-pass filter corresponding to each antenna unit; and each antenna unit except the first antenna unit is connected to a feeding circuit corresponding to each antenna unit through a second high-pass filter corresponding to each antenna unit.

5. The antenna structure according to claim 1, characterized in that: The first antenna unit is grounded and connected to a first feeding circuit.

6. The antenna structure according to claim 1, characterized in that: The antenna tuning switch is a single-pole single-throw switch.

7. A terminal device, characterized in that: The terminal device is provided with an antenna structure applied to a terminal device as described in any one of claims 1-6.

Images