Antenna structure, terminal equipment and antenna tuning method and device

Abstract

The invention relates to an antenna structure, terminal equipment and an antenna tuning method and device, and the antenna structure comprises a first branch knot which is provided with a capacitance ground point, and a first sub branch knot and a second sub branch knot which are formed at the two sides of the capacitance ground point; the first matching circuit is connected with the first sub-branch knot and is used for tuning the first sub-branch knot into a Tiantong frequency band; the second matching circuit is connected with the second sub-branch knot and used for tuning the second sub-branch knot into a WiFi frequency band or a Tiantong parasitic frequency band, and the second sub-branch knot tuned into the Tiantong parasitic frequency band forms a parasitic branch knot tuned into the first sub-branch knot of the Tiantong frequency band; and the third matching circuit is connected with the second sub-branch knot and is used for tuning the second sub-branch knot to be a GPS frequency band or not tuning the second sub-branch knot.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of antennas, and in particular to an antenna structure, a terminal device, an antenna tuning method and apparatus. BACKGROUND

[0002] With the progress of science and technology, the functions of terminal devices such as smart phones are becoming more and more rich, and the performance is becoming more and more superior, and the degree of dependence and use frequency of users on terminal devices has also been greatly improved. At present, terminal devices can not only obtain a cellular network through a network base station to communicate, but also can realize satellite communication, that is, directly exchange data with a satellite to realize communication.

[0003] Terminal devices need to be configured with an antenna for satellite communication to realize satellite communication, for example, some terminal devices configure a dedicated antenna of an external device for satellite communication. For terminal devices such as smart phones, an antenna is often formed through a middle frame, but the limited size of the middle frame needs more and more integrated antenna frequency bands. In the related art, after the satellite antenna of a smart phone, especially a folding screen phone, is integrated in the middle frame, the space of the antenna of other frequency bands is squeezed, which affects the communication effect of the antenna of other frequency bands. SUMMARY

[0004] To overcome the problems in the related art, the embodiments of the present disclosure provide an antenna structure, a terminal device, an antenna tuning method and apparatus to solve the defects in the related art.

[0005] According to a first aspect of the embodiments of the present disclosure, an antenna structure is provided, and the antenna structure comprises:

[0006] a first branch having a capacitive return point, and a first sub-branch and a second sub-branch formed on both sides of the capacitive return point;

[0007] a first matching circuit connected with the first sub-branch, used to tune the first sub-branch to a satellite communication frequency band;

[0008] a second matching circuit connected with the second sub-branch, used to tune the second sub-branch to a WiFi frequency band or a satellite communication parasitic frequency band, and the second sub-branch tuned to the satellite communication parasitic frequency band forms a parasitic branch of the first sub-branch tuned to the satellite communication frequency band;

[0009] a third matching circuit connected with the second sub-branch, used to tune the second sub-branch to a GPS frequency band or not to tune the second sub-branch.

[0010] In a possible embodiment of the present disclosure, the first matching circuit is configured to tune the first sub-branch to a frequency band of a satellite communication or a parasitic frequency band of a GPS, wherein the first sub-branch tuned to the parasitic frequency band of the GPS forms a parasitic branch of the second sub-branch tuned to the GPS frequency band.

[0011] In a possible embodiment of the present disclosure, the first matching circuit is configured to tune the first sub-branch to a frequency band of a satellite communication or a parasitic frequency band of L5 of the GPS;

[0012] The second matching circuit is configured to tune the second sub-branch to a 5G frequency band of WiFi or a parasitic frequency band of a satellite communication;

[0013] The third matching circuit is configured to tune the second sub-branch to L5 of the GPS or not to tune the second sub-branch.

[0014] In a possible embodiment of the present disclosure, the first matching circuit comprises a first switch, a first inductor, a second inductor, a first capacitor and a feeding spring connected to the first switch respectively;

[0015] The feeding spring is electrically connected to the first sub-branch, and the first inductor and the second inductor are grounded respectively.

[0016] The first matching circuit is configured to tune the first branch to a frequency band of a satellite communication when the first switch is connected to the first inductor and disconnected to the second inductor, and tune the first branch to a parasitic frequency band of a GPS when the first switch is connected to the second inductor and disconnected to the first inductor.

[0017] In a possible embodiment of the present disclosure, the second matching circuit comprises a second switch, a third inductor, a fourth inductor, a second capacitor and a feeding spring connected to the second switch respectively;

[0018] The feeding spring is electrically connected to the second sub-branch, and the third inductor and the fourth inductor are grounded respectively.

[0019] The second matching circuit is configured to tune the second branch to a parasitic frequency band of a satellite communication when the second switch is connected to the third inductor and disconnected to the fourth inductor, and tune the second branch to a frequency band of WiFi when the second switch is connected to the fourth inductor and disconnected to the third inductor.

[0020] In a possible embodiment of the present disclosure, the third matching circuit comprises a third switch, a fifth inductor, a third capacitor and a feeding spring connected to the third switch respectively;

[0021] The fifth inductor is grounded through the feeding spring plate.

[0022] The third matching circuit is configured to tune the second branch to a GPS frequency band when the third switch is closed, and not to tune the second branch when the third switch is opened.

[0023] In a possible embodiment of the present disclosure, the first matching circuit is configured to tune the first sub-branch to a Tian Tong frequency band in a satellite communication scenario, and tune the first sub-branch to a GPS parasitic frequency band in a non-satellite communication scenario.

[0024] The second matching circuit is configured to tune the second sub-branch to a WiFi frequency band in a non-satellite communication scenario, and tune the second sub-branch to a Tian Tong parasitic frequency band in a satellite communication scenario.

[0025] The third matching circuit is configured to tune the second sub-branch to a GPS frequency band in a non-satellite communication scenario, and not to tune the second sub-branch in a satellite communication scenario.

[0026] In a possible embodiment of the present disclosure, the antenna structure further comprises a second branch and a fourth matching circuit, wherein the fourth matching circuit is configured to tune the second branch to an L1 frequency band of GPS.

[0027] In a possible embodiment of the present disclosure, the antenna structure further comprises a third branch and a fifth matching circuit, wherein the fifth matching circuit is configured to tune a frequency band of the third branch, so that the third branch forms a parasitic branch of the second branch.

[0028] In a possible embodiment of the present disclosure, the first branch and the second branch are arranged at a top end of a middle frame of the terminal device, and the third branch is arranged at a side edge of the terminal device and adjacent to the second branch.

[0029] In a possible embodiment of the present disclosure, the antenna structure is an antenna structure of a terminal device with a folding screen.

[0030] According to a second aspect of the embodiments of the present disclosure, a terminal device is provided, which comprises the antenna structure according to any of the above embodiments.

[0031] According to a third aspect of the embodiments of the present disclosure, an antenna tuning method is provided, which can be applied to the terminal device according to the second aspect, and the method comprises:

[0032] In the satellite communication scenario, the first matching circuit is controlled to tune the first sub-branch to a satellite communication frequency band, the second matching circuit is controlled to tune the second sub-branch to a satellite communication parasitic frequency band, and the third matching circuit is controlled not to tune the second sub-branch.

[0033] In the non-satellite communication scenario, the first matching circuit is controlled to tune the first sub-branch to a GPS parasitic frequency band, the second matching circuit is controlled to tune the second sub-branch to a WiFi frequency band, and the third matching circuit is controlled to tune the second sub-branch to a GPS frequency band.

[0034] In some embodiments of the present disclosure, the control of the first matching circuit to tune the first sub-branch to the GPS parasitic frequency band comprises:

[0035] The first matching circuit is controlled to tune the first sub-branch to a parasitic frequency band of an L5 frequency band of GPS.

[0036] The control of the second matching circuit to tune the second sub-branch to the WiFi frequency band comprises:

[0037] The second matching circuit is controlled to tune the second sub-branch to a 5G frequency band of WiFi.

[0038] The control of the third matching circuit to tune the second sub-branch to the GPS frequency band comprises:

[0039] The third matching circuit is controlled to tune the second sub-branch to an L5 frequency band of GPS.

[0040] In some embodiments of the present disclosure, the method further comprises:

[0041] In the satellite communication scenario or the non-satellite communication scenario, the fourth matching circuit is controlled to tune the second branch to an L1 frequency band of GPS.

[0042] In some embodiments of the present disclosure, the method further comprises:

[0043] In the satellite communication scenario or the non-satellite communication scenario, the fifth matching circuit is controlled to tune a frequency band of the third branch, so that the third branch forms a parasitic branch of the second branch.

[0044] According to a fourth aspect of the embodiments of the present disclosure, an antenna tuning device is provided, which comprises:

[0045] In the satellite communication scenario, the satellite communication module controls the first matching circuit to tune the first sub-branch to a satellite communication frequency band, controls the second matching circuit to tune the second sub-branch to a satellite communication parasitic frequency band, and controls the third matching circuit not to tune the second sub-branch.

[0046] a non-satellite communication module configured to control the first matching circuit to tune the first sub-stub to a parasitic frequency band of GPS and control the second matching circuit to tune the second sub-stub to a WiFi frequency band, and control the third matching circuit to tune the second sub-stub to a GPS frequency band in a non-satellite communication scenario.

[0047] In some embodiments of the present disclosure, when the non-satellite communication module is configured to control the first matching circuit to tune the first sub-stub to a parasitic frequency band of GPS, the non-satellite communication module is configured to:

[0048] tune the first sub-stub to a parasitic frequency band of L5 of GPS.

[0049] when the non-satellite communication module is configured to control the second matching circuit to tune the second sub-stub to a WiFi frequency band, the non-satellite communication module is configured to:

[0050] tune the second sub-stub to a 5G frequency band of WiFi.

[0051] when the non-satellite communication module is configured to control the third matching circuit to tune the second sub-stub to a GPS frequency band, the non-satellite communication module is configured to:

[0052] tune the second sub-stub to a L5 frequency band of GPS.

[0053] In some embodiments of the present disclosure, the apparatus further comprises a positioning module configured to:

[0054] tune the second stub to a L1 frequency band of GPS in a satellite communication scenario or a non-satellite communication scenario.

[0055] In some embodiments of the present disclosure, the apparatus further comprises a parasitic positioning module configured to:

[0056] tune a frequency band of the third stub to make the third stub form a parasitic stub of the second stub in a satellite communication scenario or a non-satellite communication scenario.

[0057] According to a fifth aspect of embodiments of the present disclosure, a computer program product is provided, comprising computer programs / instructions, which, when executed by a processor, implement the steps of the method of the third aspect.

[0058] According to a sixth aspect of embodiments of the present disclosure, a computer-readable storage medium is provided, which stores a computer program, and the program, when executed by a processor, implements the method of the third aspect.

[0059] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects:

[0060] The antenna structure provided by the embodiments of the present disclosure can realize multiplexing of the first branch by setting a capacitive grounding point in the first branch to form two sub-branches, i.e., a first sub-branch and a second sub-branch, and tuning the two sub-branches by setting a first matching circuit, a second matching circuit and a third matching circuit, so that the first sub-branch can be tuned to a satellite communication frequency band to serve as a satellite antenna for satellite communication, the second sub-branch can serve as a parasitic branch of the first sub-branch to enhance the satellite communication function of the satellite antenna, or the second sub-branch can serve as a WiFi antenna and a GPS antenna, thereby realizing multiplexing of the first branch and making it a Combo antenna (i.e., a composite antenna). Specifically, in a satellite communication scenario, the second sub-branch can serve as a parasitic branch of the first sub-branch to enhance the satellite communication function of the satellite antenna, and in a non-satellite communication scenario, the second sub-branch can serve as a WiFi antenna and a GPS antenna, thereby ensuring communication effect in a satellite communication scenario, avoiding waste caused by idle antennas for satellite communication in a non-satellite communication scenario, improving the utilization rate of antennas, and reducing the influence of antennas for satellite communication on the function of antennas for other frequency bands. BRIEF DESCRIPTION OF DRAWINGS

[0061] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0062] Figure 1 is a schematic diagram of an antenna structure according to an example embodiment of the present disclosure;

[0063] Figure 2 is a structural schematic diagram of a first matching circuit according to an example embodiment of the present disclosure;

[0064] Figure 3 is a structural schematic diagram of a second matching circuit according to an example embodiment of the present disclosure;

[0065] Figure 4 is a structural schematic diagram of a third matching circuit according to an example embodiment of the present disclosure;

[0066] Figure 5 is a structural schematic diagram of a fourth matching circuit according to an example embodiment of the present disclosure;

[0067] Figure 6 is a structural schematic diagram of a fifth matching circuit according to an example embodiment of the present disclosure;

[0068] Figure 7 is a structural block diagram of a terminal device according to an example embodiment of the present disclosure;

[0069] Figure 8 is a flowchart of an antenna tuning method according to an example embodiment of the present disclosure;

[0070] Figure 9 FIG. 1 is a structural schematic diagram of an antenna tuning device according to an example embodiment of the present disclosure. DETAILED DESCRIPTION

[0071] The example embodiments will be described in detail below with reference to the accompanying drawings. In the following description, unless otherwise indicated, like numbers in the different drawings represent similar or analogous elements. The implementations described in the following example embodiments are not meant to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0072] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used in the present disclosure and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0073] It will be understood that, although the terms first, second, third, etc. can be used herein to describe various information, these terms are not intended to denote a particular order or hierarchy. These terms are used only to distinguish one from another. For example, a first information can be termed a second information, and, similarly, a second information can be termed a first information, without departing from the scope of the present disclosure. Depending on the context, the word "if' as used herein can be interpreted to mean "when" or "in response to determining" or "in response to a determination."

[0074] With the progress of science and technology, the functions of terminal devices such as smart phones are becoming more and more rich, and the performance is becoming more and more superior, and the degree of dependence and the frequency of use of terminal devices by users have also increased significantly. At present, terminal devices can not only obtain a cellular network through a network base station to communicate, but also can realize satellite communication, that is, directly exchange data with a satellite to realize communication.

[0075] Terminal devices need to be configured with an antenna for satellite communication to realize satellite communication, for example, some terminal devices configure a dedicated antenna of an external device for satellite communication. For terminal devices such as smart phones, the antenna is often formed through a middle frame, but the limited size of the middle frame requires more and more integrated antenna frequency bands. In the related art, after the satellite antenna is integrated into the middle frame of a smart phone, especially a folding screen phone, the space of the antenna of other frequency bands is squeezed, which affects the communication effect of the antenna of other frequency bands.

[0076] Based on this, in a first aspect, at least one embodiment of the present disclosure provides an antenna structure which can be applied to a terminal device such as a smartphone or a tablet computer, especially a terminal device equipped with a folding screen. For example, it can be a Combo antenna (i.e., a composite antenna) which can provide satellite communication functions for the terminal device as an antenna for satellite communication, and can also composite other frequency bands to improve the utilization rate of the antenna, reduce the spatial compression of the antenna for satellite communication on the antenna for other frequency bands, and the influence on the communication effect of the antenna for other frequency bands.

[0077] Please refer to the accompanying drawings Figure 1 which exemplarily shows a schematic diagram of the antenna structure provided by the present disclosure. The antenna structure comprises a first branch 101, a first matching circuit 102, a second matching circuit 103, and a third matching circuit 104.

[0078] The first branch 101 has a capacitive return point, and a first sub-branch and a second sub-branch formed on both sides of the capacitive return point. The capacitive return point is connected with the reference ground of the terminal device, for example, the reference ground of the PCB board of the terminal device, to complete grounding. For example, the capacitive return point is located in the middle of the first branch 101, the part between the left end point of the first branch 101 and the capacitive return point forms the first sub-branch, and the part between the capacitive return point and the right end point of the first branch 101 forms the second sub-branch.

[0079] The first branch 101 is a segment of the middle frame of the terminal device, for example, a segment of the middle frame of the terminal device equipped with a folding screen. It should be understood that the outer frame of the terminal device in the unfolded state can form the branch of the antenna, and the frame of the hinge part in the folded state cannot form the branch of the antenna. Preferably, the first branch 101 is arranged at the top end of the middle frame of the terminal device. Thus, the satellite communication function of the first branch 101 is ensured.

[0080] The first matching circuit 102 is connected with the first sub-branch, and is used to tune the first sub-branch to the satellite communication frequency band. Preferably, the first matching circuit 102 is used to tune the first sub-branch to the satellite communication frequency band or the GPS (Global Positioning System) parasitic frequency band, wherein the first sub-branch tuned to the GPS parasitic frequency band forms a parasitic branch of the second sub-branch tuned to the GPS frequency band. For example, the first matching circuit 102 is used to tune the first sub-branch to the satellite communication frequency band or the parasitic frequency band of the L5 frequency band of the GPS.

[0081] The satellite communication frequency band refers to a frequency band used for satellite communication.

[0082] The GPS parasitic frequency band can be a frequency band adjacent to the GPS frequency band, for example, a frequency band above the upper limit of the GPS frequency band.

[0083] For example, refer to the accompanying drawings Figure 2 The first matching circuit 102 includes a first switch T1 and a first inductor L1, a second inductor L2, a first capacitor C1 and a feeding spring S1 connected to the first switch T1 respectively; wherein the feeding spring S1 is electrically connected to the first sub-branch, the first inductor L1 and the second inductor L2 are grounded respectively, and the first capacitor C1 can be connected to a radio frequency end; wherein the first matching circuit 102 is used to tune the first branch 101 to the TETRA frequency band when the first switch T1 is connected to the first inductor L1 and disconnected from the second inductor L2, and tune the first branch 101 to the GPS parasitic frequency band when the first switch T1 is connected to the second inductor L2 and disconnected from the first inductor L1.

[0084] The second matching circuit 103 is connected to the second sub-branch and is used to tune the second sub-branch to the WiFi frequency band or the TETRA parasitic frequency band. The second sub-branch tuned to the TETRA parasitic frequency band forms a parasitic branch of the first sub-branch tuned to the TETRA frequency band. For example, the second matching circuit 103 is used to tune the second sub-branch to the 5G frequency band of WiFi or the TETRA parasitic frequency band.

[0085] The TETRA parasitic frequency band can be a frequency band adjacent to the TETRA frequency band, for example, a frequency band above the upper limit of the TETRA frequency band.

[0086] For example, refer to the accompanying drawings Figure 3 The second matching circuit 103 includes a second switch T2 and a third inductor L3, a fourth inductor L4, a second capacitor C2 and a feeding spring S2 connected to the second switch T2 respectively; wherein the feeding spring S2 is electrically connected to the second sub-branch, the third inductor L3 and the fourth inductor L4 are grounded respectively, and the second capacitor C2 can be connected to a radio frequency end; wherein the second matching circuit 103 is used to tune the second branch 105 to the TETRA parasitic frequency band when the second switch T2 is connected to the third inductor L3 and disconnected from the fourth inductor L4, and tune the second branch 105 to the WiFi frequency band when the second switch T2 is connected to the fourth inductor L4 and disconnected from the third inductor L3.

[0087] The third matching circuit 104 is connected to the second sub-branch and is used to tune the second sub-branch to the GPS frequency band or not to tune the second sub-branch. For example, the third matching circuit 104 is used to tune the second sub-branch to the L5 frequency band of GPS or not to tune the second sub-branch.

[0088] For example, refer to the accompanying drawings Figure 4 The third matching circuit 104 includes a third switch T3, a fifth inductor L5, a third capacitor C3 and a feeding spring S3 connected with the third switch T3 respectively; the feeding spring S3 is electrically connected with the second sub-branch, the fifth inductor L5 is grounded, and the third capacitor C3 is connectable with a radio frequency end; the third matching circuit 104 is used for tuning the second branch 105 to the GPS frequency band when the third switch T3 is closed, and is not used for tuning the second branch 105 when the third switch T3 is disconnected.

[0089] From the above, if the first matching circuit 102 tunes the first sub-branch to the Tian Tong frequency band, the second matching circuit 103 tunes the second sub-branch to the Tian Tong parasitic frequency band, and the third matching circuit 104 does not tune the second sub-branch, the first sub-branch forms a Tian Tong antenna for satellite communication, and the second sub-branch serves as a parasitic branch of the first sub-branch to enhance satellite communication, thereby ensuring the effect of satellite communication.

[0090] From the above, if the first matching circuit 102 tunes the first sub-branch to the parasitic frequency band of the L5 frequency band of GPS, the second matching circuit 103 tunes the second sub-branch to the 5G frequency band of WiFi, and the third matching circuit 104 tunes the second sub-branch to the L5 frequency band of GPS, the second sub-branch is multiplexed as a WiFi antenna and a GPS antenna, and the first sub-branch serves as a parasitic branch of the second sub-branch to enhance the function of the GPS antenna.

[0091] Therefore, the first matching circuit 102 is used for tuning the first sub-branch to the Tian Tong frequency band in a satellite communication scenario; the second matching circuit 103 is used for tuning the second sub-branch to the Tian Tong parasitic frequency band in the satellite communication scenario; and the third matching circuit 104 is used for not tuning the second sub-branch in the satellite communication scenario. That is, in the satellite communication scenario, the first branch 101 serves as a Tian Tong antenna for satellite communication, and its communication effect can be ensured because the Tian Tong frequency band branch has a parasitic branch for enhancement.

[0092] Therefore, the first matching circuit 102 is used to tune the first sub-branch to the GPS parasitic frequency band in the non-satellite communication scenario; the second matching circuit 103 is used to tune the second sub-branch to the WiFi frequency band in the non-satellite communication scenario; and the third matching circuit 104 is used to tune the second sub-branch to the GPS frequency band in the non-satellite communication scenario, and does not tune the second sub-branch in the satellite communication scenario. That is, in the non-satellite communication scenario, the first branch 101 serves as a GPS antenna and a WiFi antenna, and is used for GPS positioning and WiFi communication, and the positioning and communication effects are good, because the second branch 105 that multiplexes the GPS frequency band and the WiFi frequency band has the enhancement of the parasitic branch.

[0093] It should be understood that the terminal device can send a notification to the first matching circuit 102, the second matching circuit 103, and the third matching circuit 104 after determining the communication scenario (i.e., the satellite communication scenario or the non-satellite communication scenario), so that the first matching circuit 102, the second matching circuit 103, and the third matching circuit 104 tune the first sub-branch and the second sub-branch in the above manner to adapt to the communication scenario of the terminal device.

[0094] The antenna structure provided by the embodiments of the present disclosure can realize the multiplexing of the first branch 101 by setting a capacitive grounding point in the first branch 101 to form two sub-branches, i.e., the first sub-branch and the second sub-branch, and tuning the two sub-branches by setting the first matching circuit 102, the second matching circuit 103, and the third matching circuit 104, so that the first sub-branch can be tuned to the Tian Tong frequency band to serve as a Tian Tong antenna for satellite communication, the second sub-branch can serve as a parasitic branch of the first sub-branch to enhance the satellite communication function of the Tian Tong antenna, or the second sub-branch can serve as a WiFi antenna and a GPS antenna, thereby realizing the multiplexing of the first branch 101 and making it a Combo antenna (i.e., a composite antenna). Specifically, in the satellite communication scenario, the second sub-branch can serve as a parasitic branch of the first sub-branch to enhance the satellite communication function of the Tian Tong antenna, and in the non-satellite communication scenario, the second sub-branch can serve as a WiFi antenna and a GPS antenna, thereby ensuring the communication effect in the satellite communication scenario, avoiding the idle of the antenna for satellite communication in the non-satellite communication scenario, improving the utilization rate of the antenna, and reducing the influence of the antenna for satellite communication on the function of other frequency band antennas.

[0095] Please continue to refer to the accompanying Figure 1 In some embodiments of the present disclosure, the antenna structure further includes a second branch 105 and a fourth matching circuit 106, wherein the fourth matching circuit 106 is used to tune the second branch 105 to the L1 frequency band of GPS and the 2.4G frequency band of WiFi.

[0096] Preferably, the second branch 105 is arranged at the top end of the middle frame of the terminal device, so as to facilitate signal transceiving of the GPS frequency band and improve the accuracy of GPS positioning.

[0097] For example, refer to the accompanying drawings Figure 5 The fourth matching circuit 106 comprises a fourth capacitor C4 and a sixth inductor L6 connected in series, a patch S4 and a seventh inductor L7 connected in parallel to one end of the fourth capacitor C4 away from the sixth inductor L6, and a fifth capacitor C5 and a radio frequency end AC connected in parallel to one end of the sixth inductor L6 away from the fourth capacitor C4; the seventh inductor L7 and the fifth capacitor C5 are grounded.

[0098] The GPS positioning function of the second branch 105 can assist the satellite communication function of the first branch 101, that is, the terminal device can first perform positioning by using the GPS positioning function, and then select a frequency band of a corresponding satellite to tune the first sub-branch according to the determined position, so as to improve the success rate and communication effect of satellite communication of the first branch 101.

[0099] For example, refer to the accompanying drawings Figure 1 In some embodiments of the present disclosure, the antenna structure further comprises a third branch 107 and a fifth matching circuit 108, wherein the fifth matching circuit 108 is used to tune the frequency band of the third branch 107, so that the third branch 107 forms a parasitic branch of the second branch 105.

[0100] Preferably, the third branch 107 is arranged at the side of the terminal device and adjacent to the second branch 105.

[0101] For example, refer to the accompanying drawings Figure 6 The fifth matching circuit 108 comprises a fourth switch T4 and an eighth inductor L8 and a patch S5 connected to the fourth switch T4, respectively, the patch S5 is connected to the third branch 107, the eighth inductor L8 is grounded, and the fourth switch T4 can also be connected to a radio frequency end.

[0102] The antenna structure provided by the present disclosure can improve the satellite communication performance in a satellite communication scenario (i.e. a Tianhong scenario), in which the first sub-branch of the first branch 101 is tuned to a Tianhong frequency band, and the second sub-branch forms a parasitic branch of the first sub-branch; meanwhile, the second branch 105 is tuned to an L1 frequency band of GPS and a 2.4G frequency band of WiFi, and the third branch 107 is tuned to a parasitic branch of the second branch 105, so as to ensure the positioning and wireless communication functions of the terminal device, and the positioning of the second branch 105 can assist the satellite communication of the first sub-branch.

[0103] The antenna structure provided by the present disclosure tunes the second sub-branch of the first branch 101 to the L5 frequency band of GPS and the 5G frequency band of WiFi, and the first sub-branch forms a parasitic branch of the second sub-branch, thereby improving the GPS positioning performance; meanwhile, the second branch 105 is tuned to the L1 frequency band of GPS and the 2.4G frequency band of WiFi, and the third branch 107 is tuned as a parasitic branch of the second branch 105. Thus, the positioning and wireless communication performance of the terminal in the non-satellite communication scenario, especially the positioning performance, is improved.

[0104] According to a second aspect of the embodiments of the present disclosure, a terminal device is provided, which comprises the antenna structure of any of the above embodiments.

[0105] Please refer to the accompanying drawings Figure 7 which schematically shows a block diagram of the terminal device. For example, the device 700 can 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, etc.

[0106] Referring to Figure 7 , the device 700 can include one or more of the following components: a processing component 702, a memory 704, a power supply component 706, a multimedia component 708, an audio component 710, an input / output (I / O) interface 712, a sensor component 714, and a communication component 716.

[0107] The processing component 702 usually controls overall operations of the device 700, such as operations associated with display, phone call, data communication, camera operation and recording operation. The processing component 702 can include one or more processors 720 to execute instructions to complete all or part of steps of the methods described above. In addition, the processing component 702 can include one or more modules to facilitate the interaction between the processing component 702 and other components. For example, the processing component 702 can include a multimedia module to facilitate the interaction between the multimedia component 708 and the processing component 702.

[0108] The memory 704 is configured to store various types of data to support operations of the device 700. Examples of the data include instructions for any application or method operating on the device 700, contact data, phonebook data, messages, pictures, videos, etc. The memory 704 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0109] Power component 706 provides power to the various components of device 700. Power component 706 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 700.

[0110] Multimedia component 708 includes a screen providing an output interface between device 700 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense a touch, slide, and gesture on the touch panel. The touch sensor can not only sense a boundary of a touch or slide action, but also detect duration and pressure related to the touch or slide action. In some embodiments, multimedia component 708 includes a front-facing camera and / or a rear-facing camera. When device 700 is in an operation mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera can receive external multimedia data. Each of the front-facing camera and the rear-facing camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0111] Audio component 710 is configured to output and / or input audio signals. For example, audio component 710 includes a microphone (MIC) that is configured to receive an external audio signal when device 700 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in memory 704 or transmitted via communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.

[0112] I / O interface 712 provides an interface between processing component 702 and peripheral interface modules, which can be a keyboard, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0113] The sensor component 714 includes one or more sensors for providing status assessments for various aspects of the device 700. For example, the sensor component 714 can detect an open / closed position of the device 700, relative positioning of components, such as a display and keypad of the device 700, image changes in the position of the device 700 or a component of the device 700, the presence or absence of user contact with the device 700, the orientation or acceleration / deceleration of the device 700, and temperature changes of the device 700. The sensor component 714 can also include proximity sensor(s) configured to detect the presence of nearby objects without any physical touch. The sensor component 714 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 714 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0114] The communication component 716 is configured to facilitate wired or wireless communication between the device 700 and another device. The device 700 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, 4G or 5G, or a combination thereof. In an example embodiment, the communication component 716 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 716 further 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 technology.

[0115] In an example embodiment, the device 700 can be implemented using 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 elements.

[0116] According to a third aspect of embodiments of the present disclosure, an antenna tuning method is provided, which can be applied to the terminal device provided in the second aspect above. Please refer to the accompanying drawings Figure 8 The method comprises:

[0117] In step S801, in a satellite communication scenario, the first matching circuit is controlled to tune the first sub-branch to the satellite communication frequency band, the second matching circuit is controlled to tune the second sub-branch to the satellite communication parasitic frequency band, and the third matching circuit is controlled not to tune the second sub-branch;

[0118] In step S802, in the non-satellite communication scenario, the first matching circuit is controlled to tune the first sub-branch to the GPS parasitic frequency band, the second matching circuit is controlled to tune the second sub-branch to the WiFi frequency band, and the third matching circuit is controlled to tune the second sub-branch to the GPS frequency band.

[0119] In some embodiments of the present disclosure, the control of the first matching circuit to tune the first sub-branch to the parasitic frequency band of the L5 frequency band of GPS includes:

[0120] The first matching circuit is controlled to tune the first sub-branch to the parasitic frequency band of the L5 frequency band of GPS.

[0121] The control of the second matching circuit to tune the second sub-branch to the WiFi frequency band includes:

[0122] The second matching circuit is controlled to tune the second sub-branch to the 5G frequency band of WiFi.

[0123] The control of the third matching circuit to tune the second sub-branch to the GPS frequency band includes:

[0124] The third matching circuit is controlled to tune the second sub-branch to the L5 frequency band of GPS.

[0125] In some embodiments of the present disclosure, the method further includes:

[0126] In the satellite communication scenario or the non-satellite communication scenario, the fourth matching circuit is controlled to tune the second branch to the L1 frequency band of GPS.

[0127] In some embodiments of the present disclosure, the method further includes:

[0128] In the satellite communication scenario or the non-satellite communication scenario, the fifth matching circuit is controlled to tune the frequency band of the third branch, so that the third branch forms a parasitic branch of the second branch.

[0129] Details about the above steps of the method have been described in detail when introducing the antenna structure in the first aspect, and will not be repeated here.

[0130] According to a fourth aspect of the embodiments of the present disclosure, an antenna tuning device is provided, please refer to the accompanying Figure 9 The device includes:

[0131] The satellite communication module 901 is configured to, in the satellite communication scenario, control the first matching circuit to tune the first sub-branch to the Tian Tong frequency band, control the second matching circuit to tune the second sub-branch to the Tian Tong parasitic frequency band, and control the third matching circuit not to tune the second sub-branch.

[0132] The non-satellite communication module 902 is configured to, in a non-satellite communication scenario, control the first matching circuit to tune the first sub-branch to a GPS parasitic frequency band, control the second matching circuit to tune the second sub-branch to a WiFi frequency band, and control the third matching circuit to tune the second sub-branch to a GPS frequency band.

[0133] According to a fifth aspect of the embodiments of the present disclosure, a computer program product is provided, comprising computer programs / instructions, which, when executed by a processor, implement the steps of the method according to the third aspect.

[0134] According to a sixth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, which stores a computer program, and the program, when executed by a processor, implements the method according to the third aspect.

[0135] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the aspects of the present disclosure disclosed herein. It is intended that the present disclosure cover any and all variations of the present disclosure that come within the scope of the claims and their equivalents. It is intended that the specification and examples be considered exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0136] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. An antenna structure, characterized by The antenna structure comprises: a first branch having a capacitive ground point, and a first sub-branch and a second sub-branch formed on both sides of the capacitive ground point; a first matching circuit connected with the first sub-branch, for tuning the first sub-branch to a satellite communication frequency band; a second matching circuit connected with the second sub-branch, for tuning the second sub-branch to a WiFi frequency band or a satellite communication parasitic frequency band, the second sub-branch tuned to the satellite communication parasitic frequency band forming a parasitic branch of the first sub-branch tuned to the satellite communication frequency band; a third matching circuit connected with the second sub-branch, for tuning the second sub-branch to a GPS frequency band or not tuning the second sub-branch.

2. The antenna structure of claim 1, wherein, The first matching circuit is used for tuning the first sub-branch to a satellite communication frequency band or a GPS parasitic frequency band, wherein the first sub-branch tuned to the GPS parasitic frequency band forms a parasitic branch of the second sub-branch tuned to the GPS frequency band.

3. The antenna structure of claim 2, wherein, The first matching circuit is used for tuning the first sub-branch to a satellite communication frequency band or a parasitic frequency band of L5 frequency band of GPS; The second matching circuit is used for tuning the second sub-branch to a 5G frequency band of WiFi or a satellite communication parasitic frequency band; The third matching circuit is used for tuning the second sub-branch to an L5 frequency band of GPS or not tuning the second sub-branch.

4. The antenna structure of claim 2, wherein, The first matching circuit comprises a first switch, and a first inductor, a second inductor, a first capacitor and a feeding spring connected with the first switch respectively; The feeding spring is electrically connected with the first sub-branch, and the first inductor and the second inductor are grounded respectively; The first matching circuit is used for tuning the first branch to a satellite communication frequency band when the first switch is connected with the first inductor and disconnected with the second inductor, and tuning the first branch to a GPS parasitic frequency band when the first switch is connected with the second inductor and disconnected with the first inductor.

5. The antenna structure of claim 2, wherein, The second matching circuit comprises a second switch, and a third inductor, a fourth inductor, a second capacitor and a feeding spring connected with the second switch respectively; The feeding spring is electrically connected with the second sub-branch, and the third inductor and the fourth inductor are grounded respectively; The second matching circuit is used for tuning the second branch to a satellite communication parasitic frequency band when the second switch is connected with the third inductor and disconnected with the fourth inductor, and tuning the second branch to a WiFi frequency band when the second switch is connected with the fourth inductor and disconnected with the third inductor.

6. The antenna structure of claim 2, wherein, The third matching circuit comprises a third switch, and a fifth inductor, a third capacitor and a feeding spring connected with the third switch respectively; The feeding spring is electrically connected with the second sub-branch, and the fifth inductor is grounded; The third matching circuit is used for tuning the second branch to a GPS frequency band when the third switch is connected, and not tuning the second branch when the third switch is disconnected.

7. The antenna structure of claim 2, wherein, The first matching circuit is used for tuning the first sub-branch to a satellite communication frequency band in a satellite communication scenario, and tuning the first sub-branch to a GPS parasitic frequency band in a non-satellite communication scenario; The second matching circuit is configured to tune the second sub-branch to a WiFi frequency band in a non-satellite communication scenario, and tune the second sub-branch to a satellite communication parasitic frequency band in a satellite communication scenario. The third matching circuit is configured to tune the second sub-branch to a GPS frequency band in a non-satellite communication scenario, and not tune the second sub-branch in a satellite communication scenario.

8. The antenna structure of claim 2, wherein, The antenna structure further comprises a second branch and a fourth matching circuit, wherein the fourth matching circuit is configured to tune the second branch to an L1 frequency band of GPS.

9. The antenna structure of claim 8, wherein, The antenna structure further comprises a third branch and a fifth matching circuit, wherein the fifth matching circuit is configured to tune a frequency band of the third branch, so that the third branch forms a parasitic branch of the second branch.

10. The antenna structure of claim 8, wherein, The first branch and the second branch are arranged at a top end of a middle frame of the terminal device, and the third branch is arranged at a side of the terminal device and adjacent to the second branch.

11. The antenna structure of any one of claims 1 to 10, wherein, The antenna structure is an antenna structure of a terminal device with a folding screen.

12. A terminal device, comprising: The terminal device comprises the antenna structure of any one of claims 1 to 10.

13. An antenna tuning method, characterized by, The method comprises: in a satellite communication scenario, controlling the first matching circuit to tune the first sub-branch to a satellite communication frequency band, controlling the second matching circuit to tune the second sub-branch to a satellite communication parasitic frequency band, and controlling the third matching circuit not to tune the second sub-branch; in a non-satellite communication scenario, controlling the first matching circuit to tune the first sub-branch to a GPS parasitic frequency band, controlling the second matching circuit to tune the second sub-branch to a WiFi frequency band, and controlling the third matching circuit to tune the second sub-branch to a GPS frequency band.

14. The antenna tuning method of claim 13, wherein, The control of the first matching circuit to tune the first sub-branch to a GPS parasitic frequency band comprises: controlling the first matching circuit to tune the first sub-branch to a parasitic frequency band of an L5 frequency band of GPS; The control of the second matching circuit to tune the second sub-branch to a WiFi frequency band comprises: controlling the second matching circuit to tune the second sub-branch to a 5G frequency band of WiFi; The control of the third matching circuit to tune the second sub-branch to a GPS frequency band comprises: controlling the third matching circuit to tune the second sub-branch to an L5 frequency band of GPS.

15. The antenna tuning method of claim 13, wherein, The method further comprises: in a satellite communication scenario or a non-satellite communication scenario, controlling the fourth matching circuit to tune the second branch to an L1 frequency band of GPS.

16. The antenna tuning method of claim 13, wherein, The method further comprises: in a satellite communication scenario or a non-satellite communication scenario, controlling the fifth matching circuit to tune a frequency band of the third branch, so that the third branch forms a parasitic branch of the second branch.

17. An antenna tuning device, characterized by The apparatus comprises: a satellite communication module, configured to, in a satellite communication scenario, control the first matching circuit to tune the first sub-branch to a satellite communication frequency band, control the second matching circuit to tune the second sub-branch to a satellite communication parasitic frequency band, and control the third matching circuit not to tune the second sub-branch; a non-satellite communication module, configured to, in a non-satellite communication scenario, control the first matching circuit to tune the first sub-branch to a GPS parasitic frequency band, control the second matching circuit to tune the second sub-branch to a WiFi frequency band, and control the third matching circuit to tune the second sub-branch to a GPS frequency band.

18. A computer program product comprising computer programs / instructions, characterized in that, The computing program / instructions, when executed by the processor, implement the steps of the method of any one of claims 13 to 16.

19. A computer readable storage medium having stored thereon a computer program, characterized in that, The program, when executed by the processor, implements the method of any one of claims 13 to 16.

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