Tuning device, antenna device and terminal equipment

Abstract

The present application provides a tuning device, comprising: a plurality of pins, the plurality of pins including: a first pin, a second pin, a third pin, and a fourth pin; a reactance element, the reactance element being connected between the first pin and the second pin; a switch assembly, disposed between the third pin and the fourth pin; a first internal branch, one end of the first internal branch being connected to the third pin; a second internal branch, one end of the second internal branch being connected to the fourth pin; wherein the other end of the first internal branch is connected to the other end of the second internal branch to form a main terminal, the main terminal being connected to the first pin; the tuning device further comprising: a signal controller, the signal controller being used to control the switch assembly to switch the on / off state of the first internal branch, and / or to control the switch assembly to switch the on / off state of the second internal branch. The present application also provides an antenna device and a terminal device, which help reduce the antenna's clearance requirements.

Description

Technical Field

[0001] The present application relates to the field of electronic devices, and more particularly, to a tuning device, an antenna apparatus, and a terminal device. Background Art

[0002] In recent years, driven by market demand, mobile phone development trends have focused on larger screen-to-body ratios, multiple cameras, and ultra-thin thicknesses. Consequently, the space available for component placement within terminals has become increasingly smaller. However, with the advancement of communications technology, mobile phone antennas need to cover multiple frequency bands. However, a single antenna struggles to cover multiple frequency bands simultaneously, necessitating the deployment of more antennas. Arranging more antennas within a limited space has become a major challenge in terminal antenna design. Summary of the Invention

[0003] The present application provides a tuning device, an antenna apparatus, and a terminal device, in order to reduce the antenna's requirement for clearance.

[0004] In a first aspect, a tuning device is provided, comprising:

[0005] A plurality of pins, the plurality of pins comprising: a first pin, a second pin, a third pin, and a fourth pin;

[0006] a reactance element connected between the first pin and the second pin;

[0007] a switch component, disposed between the third pin and the fourth pin;

[0008] a first internal branch, one end of the first internal branch being connected to the third pin;

[0009] a second internally connected branch, one end of the second internally connected branch being connected to the fourth pin;

[0010] The other end of the first internal branch is connected to the other end of the second internal branch to form a main terminal, and the main terminal is connected to the first pin;

[0011] The tuning device further comprises:

[0012] A signal controller, the signal controller is used to control the switch component to switch the on / off state of the first internal branch, and / or the signal controller is used to control the switch component to switch the on / off state of the second internal branch.

[0013] The tuning device of the embodiment of the present application, the combination of the reactance element and the switch component enables the tuning device to achieve multiple circuit states, and thus achieve different tuning states, which can play a role in streamlining the tuning circuit.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the reactance element is a variable capacitor; and the signal controller is further used to switch the capacitance value of the reactance element.

[0015] In the tuning device of the embodiment of the present application, the variable capacitor can realize different circuit states, and the combination of the variable capacitor and the switch component can realize more circuit states, thereby realizing different tuning states, which can play a role in streamlining the tuning circuit.

[0016] In combination with the first aspect, in certain implementations of the first aspect, a capacitance value of the variable capacitor ranges from 0.7 to 2.7 pF.

[0017] The tuning device of the embodiment of the present application has a capacitance value range of 0.7-2.7 pF, which can achieve multiple common frequency bands.

[0018] In combination with the first aspect, in some implementations of the first aspect, the variable capacitor is used to switch at least 8 different capacitance values.

[0019] In the tuning device of the embodiment of the present application, when the variable capacitor has 8 different capacitance values, the size of the tuning device will not be too large, and more circuit states can be tuned.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the reactive element is a variable inductor; and the signal controller is further configured to switch the inductance value of the reactive element.

[0021] In the tuning device of the embodiment of the present application, the variable inductor can realize different circuit states, and the combination of the variable inductor and the switch component can realize more circuit states, thereby realizing different tuning states, which can play a role in streamlining the tuning circuit.

[0022] In combination with the first aspect, in some implementations of the first aspect, the tuning device further includes: a branch reactance, and the branch reactance is arranged on the first inscribed branch or the second inscribed branch.

[0023] The tuning device of the embodiment of the present application, the branch reactance can increase the use scenarios of the tuning device

[0024] In combination with the first aspect, in certain implementations of the first aspect, the branch reactance is a variable capacitor; and the signal controller is further used to switch the capacitance value of the reactance element.

[0025] The tuning device of the embodiment of the present application, the variable capacitor can realize different circuit states, and the combination of the reactance element, the branch reactance and the switch component can realize more circuit states, and then realize different tuning states, which can play a role in streamlining the tuning circuit.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the branch reactance is a variable inductor; and the signal controller is further configured to switch a capacitance value of the branch inductor.

[0027] The tuning device of the embodiment of the present application, the variable inductor can realize different circuit states, and the combination of the reactance element, the branch reactance and the switch component can realize more circuit states, and thus realize different tuning states, which can play a role in streamlining the tuning circuit.

[0028] In combination with the first aspect, in some implementations of the first aspect, the open state of the first internal branch corresponds to two frequency bands, or the open state of the second internal branch corresponds to two frequency bands.

[0029] In a second aspect, an antenna device is provided, comprising:

[0030] feeding point; first antenna radiator;

[0031] a tuning circuit, wherein a first end of the tuning circuit is connected to the feeding point, and a second end of the tuning circuit is connected to one end of the first antenna radiator; the tuning circuit comprises:

[0032] N tuning devices as in the first aspect and any possible implementation of the first aspect, wherein at least two of the first pin, the second pin, the third pin, and the fourth pin of each of the N tuning devices are connected between the first end and the second end of the tuning circuit, and N is a positive integer greater than or equal to 1.

[0033] The antenna device of the embodiment of the present application adopts a tuning device that can realize multiple circuit states, which simplifies the size of the antenna device and reduces the antenna's requirement for clearance.

[0034] In combination with the second aspect, in some implementations of the second aspect, the N tuning devices include a first tuning device, the second pin of the first tuning device is connected to the first pin, the third pin or the fourth pin of the first tuning device, or the second pin of the first tuning device is connected to the first end of the tuning circuit or the second end of the tuning circuit.

[0035] The antenna device of the embodiment of the present application adopts the above connection method to improve the tuning performance of the antenna device.

[0036] In conjunction with the second aspect, in some implementations of the second aspect, the tuning circuit further includes a third terminal;

[0037] The antenna device further includes: a second antenna radiator, connected to the third end of the tuning circuit, wherein M tuning devices as described in the first aspect and any possible implementation of the first aspect are arranged on the connection path between the first end of the tuning circuit and the third end of the tuning circuit, wherein at least two of the first pin, second pin, third pin, and fourth pin of each of the M tuning devices are connected between the first end of the tuning circuit and the third end of the tuning circuit, and M is a positive integer greater than or equal to 1.

[0038] The antenna device of the embodiment of the present application adopts a tuning device that can realize multiple circuit states, can realize the tuning of multiple antenna radiators, and can adapt to multi-antenna scenarios.

[0039] In combination with the second aspect, in some implementations of the second aspect, the M tuning devices include a second tuning device connected between the first end of the tuning circuit and the second end of the tuning circuit.

[0040] In combination with the second aspect, in some implementations of the second aspect, the tuning device includes a third tuning device, a third pin of the third tuning device is connected to the second end of the tuning circuit, and a fourth pin of the third tuning device is connected to the third end of the tuning circuit.

[0041] In combination with the second aspect, in certain implementations of the second aspect, the first antenna radiator is a composite left-right-hand + inverted-F type antenna radiator; the antenna device further includes: an external capacitor, which is connected between the second end of the tuning circuit and the first antenna radiator.

[0042] The antenna device of the embodiment of the present application adopts a tuning device that can realize multiple circuit states, and can realize tuning of the composite left-handed and right-handed + inverted-F type antenna.

[0043] In combination with the second aspect, in certain implementations of the second aspect, the antenna device further includes a grounding point; wherein the N tuning devices include a fourth tuning device, and at least one of the first pin, the second pin, the third pin, and the fourth pin of the fourth tuning device is connected to the grounding point.

[0044] In combination with the second aspect, in certain implementations of the second aspect, N is a positive integer greater than or equal to 2, and at least one of the first pin, second pin, third pin, and fourth pin of any tuning device among the N tuning devices is connected to at least one of the first pin, second pin, third pin, and fourth pin of a tuning device among the other tuning devices among the N tuning devices except the any tuning device.

[0045] The antenna device of the embodiment of the present application connects multiple tuning devices in series, which can achieve a circuit state that increases exponentially and broaden the tunable frequency bandwidth.

[0046] In combination with the second aspect, in some implementations of the second aspect, a fifth tuning device and a sixth tuning device, wherein at least one of the second pin, the third pin, and the fourth pin of the fifth tuning device is connected to the first pin of the sixth tuning device.

[0047] In combination with the second aspect, in certain implementations of the second aspect, the tuning circuit further includes: a first external branch, one end of which is connected to the third pin or the fourth pin of the fifth tuning device; and a second external branch, one end of which is connected to the third pin or the fourth pin of the fifth tuning device, wherein the sixth tuning device is arranged on the first external branch.

[0048] In combination with the second aspect, in some implementations of the second aspect, the N tuning devices further include: a seventh tuning device, which is arranged on the second external branch.

[0049] The antenna device of the embodiment of the present application connects multiple tuning devices in parallel, which can realize more circuit states and broaden the tunable frequency bandwidth.

[0050] In combination with the second aspect, in some implementations of the second aspect, the antenna device further includes: a single-pole multi-throw switch tuning device, which is arranged on the second external branch.

[0051] In the antenna device according to the embodiment of the present application, the tuning device may also be connected to other components to implement the tuning function of the antenna device.

[0052] In combination with the second aspect, in some implementations of the second aspect, the first antenna radiator is a loop antenna radiator.

[0053] In a third aspect, a terminal device is provided, which includes the antenna device in the second aspect and any possible implementation manner of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is a schematic structural diagram of a tuning device according to an embodiment of the present application.

[0055] Figure 2 is a schematic structural diagram of an antenna device according to an embodiment of the present application.

[0056] Figure 3 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0057] Figure 4This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0058] Figure 5 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0059] Figure 6 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0060] Figure 7 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0061] Figure 8 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0062] Figure 9 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0063] Figure 10 is a schematic structural diagram of an antenna device according to an embodiment of the present application.

[0064] Figure 11 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0065] Figure 12 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0066] Figure 13 is a schematic structural diagram of an antenna device according to an embodiment of the present application.

[0067] Figure 14 This is an internal circuit diagram of an antenna device according to an embodiment of the present application.

[0068] Figure 15 This is an internal circuit diagram of an antenna device according to an embodiment of the present application. DETAILED DESCRIPTION

[0069] The technical solution in this application will be described below with reference to the accompanying drawings.

[0070] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0071] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0072] The terminal device in the embodiments of the present application may refer to a user device, an access terminal, a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited thereto.

[0073] For ease of description, the term "connection" in this application refers to a variety of possible ways of connection, assembly, and association, including electrical connection, that is, there is a connectable path between components.

[0074] The specific implementation of the embodiment of the present application is described in more detail below in conjunction with specific examples. It should be noted that the examples below are only to help those skilled in the art understand the embodiment of the present application, rather than to limit the application embodiment to the specific numerical values ​​or specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples given below, and such modifications and changes also fall within the scope of the embodiment of the present application.

[0075] Figure 1 is a schematic structural diagram of a tuning device provided in an embodiment of the present application, such as Figure 1 As shown, the tuning device 100 includes a substrate, on which a switch component, an inductive element, a first pin 110, a second pin 120, a third pin 130, a fourth pin 140, and a signal controller are arranged. An internal circuit is provided on the substrate to connect the above-mentioned devices; wherein the inductive element is connected in series between the first pin 110 and the second pin 120; the tuning device 100 also includes a first internal branch 101 and a second internal branch 102, one end of the first internal branch 101 is connected to the third pin 130, and one end of the second internal branch 102 is connected to the fourth pin 140; the other end of the first internal branch is connected to the other end of the second internal branch to form a main terminal, and the main terminal is connected to the first pin. The switch component is connected in series between the third pin 130 and the fourth pin 140, and the switch component is controlled by the signal controller to switch the on / off state of the first internal branch 101 and / or the second internal branch 102.

[0076] The connection relationship, structure and function of each component are described in detail below.

[0077] A.Signal Controller

[0078] The signal controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and execution, and is used to control the switching component to switch the open and close state of the first internal branch 101 and / or the second internal branch 102.

[0079] After generating the control signal, the signal controller sends the control signal to the input port of the switch component through its output port (not shown in the figure).

[0080] In the embodiment of the present application, the method and process of the local oscillator 110 generating the local oscillation signal may be similar to those in the prior art, and the description thereof is omitted here to avoid redundancy.

[0081] B. Switch assembly

[0082] The switch assembly is used to switch the on / off state of the first internal branch 101 and / or the second internal branch 102. The switch assembly includes at least one switch.

[0083] Optionally, the switch component can be a single-pole double-throw switch component, which can switch between three states, including a state in which the first internal branch 101 is connected and the second internal branch 102 is disconnected, a state in which the first internal branch 101 is disconnected and the second internal branch 102 is both connected, and a state in which both the first internal branch 101 and the second internal branch 102 are disconnected.

[0084] Optionally, the switch component may include a switch component 1 connected in series with the first internal branch 101 and a switch component 2 connected in series with the second internal branch 102. The switch component can switch between four states, including a state in which the first internal branch 101 is connected and the second internal branch 102 is disconnected, a state in which the first internal branch 101 is disconnected and the second internal branch 102 is connected, a state in which both the first internal branch 101 and the second internal branch 102 are disconnected, and a state in which both the first internal branch 101 and the second internal branch 102 are connected.

[0085] That is to say, the switch component switches the on / off state of the two branches to achieve the connection state of multiple circuits.

[0086] C. Reactive components

[0087] The reactance element can play a tuning role in the tuning device 100 .

[0088] Optionally, the reactive element is a capacitor and / or an inductor. For example, a capacitor can adjust the impedance position of the antenna radiator on the Smith chart from the first or second quadrant to the third or fourth quadrant, while an inductor can adjust the impedance position of the antenna radiator on the Smith chart from the third or fourth quadrant to the first or second quadrant. Combining multiple capacitors and / or inductors allows for adjustment of the impedance position on the Smith chart over a wider frequency band.

[0089] Optionally, the reactive element is a variable capacitor. In other words, the reactive element is a capacitive element that can be adjusted to multiple capacitance values. In other words, the variable capacitor can achieve different circuit states; further, different tuning states can be achieved. For example, the reactive element can be adjusted to two different capacitance values ​​1 and 2. Then, capacitance values ​​1 and 2 can respectively correspond to different tuning degrees, and therefore can correspond to different frequency bands.

[0090] Optionally, the signal controller is further configured to switch between different capacitance values ​​of the reactive element.

[0091] Optionally, the capacitance value of the variable capacitor ranges from 0.7 to 2.7 pF. When the capacitance value is within the range of 0.7 to 2.7 pF, frequency tuning can be achieved, for example, from 700 MHz to 6 GHz.

[0092] Optionally, the variable capacitor is used to switch at least 8 different capacitance values.

[0093] It should be noted that when the number of capacitance values ​​that can be switched by the variable capacitor is less than 8, the element size of the variable capacitor is small, but the number of circuit states or tuning states that can be achieved is small; when the number of capacitance values ​​that can be switched by the variable capacitor is greater than 8, the element size of the variable capacitor is large, and the size of the tuning device 100 is also larger.

[0094] Furthermore, the combination of a variable capacitor and a switch component can realize more circuit states. For example, the variable capacitor can switch between 8 different capacitance values, and the switch component can realize 4 different circuit connection states. Therefore, the tuning device 100 can realize 8×4 circuit states.

[0095] Furthermore, the eight different capacitance values ​​of the variable capacitor are: 0.7, 1, 1.3, 1.65, 1.9, 2.2, 2.4, and 2.7. In other words, the eight different capacitance values ​​are evenly distributed within the range of 0.7-2.7 pF, which is conducive to achieving uniform tuning over a large frequency range.

[0096] Optionally, the reactive element is a variable inductor. In other words, the reactive element can be adjusted to have multiple inductance values. For example, the reactive element can be adjusted to have two different inductance values, 1 and 2. Inductance values ​​1 and 2 can then correspond to different tuning levels, and therefore different frequency bands.

[0097] Optionally, the signal controller is further configured to switch between different inductance values ​​of the reactive element.

[0098] D. Pin

[0099] The pins include a first pin 110 , a second pin 120 , a third pin 130 , and a fourth pin 140 , which are used to connect to one end of an external circuit.

[0100] Optionally, the tuning device 100 further includes: at least one of a user identification (USID) pin, a ground (GND) pin, a serial data (SDATA) pin, an input / output power supply (VIO) pin, and a serial clock (SCLK) pin.

[0101] Among them, the USID pin is used to identify the identification code of the device controlled by the mobile industry processor interface (MIPI), which is equivalent to numbering each device, and the control signal is sent to the corresponding device according to the corresponding number; the GND pin is used to tune the ground of the device 100; the SDATA pin is the data interface of the device, which is used to input control data; the VIO pin is connected to the power supply of the device and is used to input the power signal; the SCLK pin is used to input the clock control signal.

[0102] Optionally, the tuning device 100 may further include:

[0103] E. Branch reactance

[0104] The branch reactance is arranged on the first inscribed branch or the second inscribed branch.

[0105] Optionally, the branch reactance is inductance and / or capacitance.

[0106] In one example, the reactive element is a capacitor, and an inductive element is connected in series between the switch component and the third pin 130 and / or the fourth pin 140. For example, inductive element 1 is connected in series with the first internal branch 101, and inductive element 2 is connected in series with the second internal branch 102. In other words, the tuning device 100 can implement a circuit in which a capacitor and an inductor are connected in series.

[0107] In one example, the reactive element is an inductor, and a capacitive element is connected in series between the switch component and the third pin 130 and / or the fourth pin 140. For example, capacitive element 1 is connected in series with the first internal branch 101. In other words, the tuning device 100 can implement a circuit in which an inductor and a capacitor are connected in series.

[0108] In one example, the reactive element is a capacitor, and an inductor and a capacitor are connected in series between the switch component and the third pin 130 and the fourth pin 140, respectively. For example, an inductor 1 is connected in series with the first internal branch 101, and a capacitor 1 is connected in series with the second internal branch 102. In other words, the tuning device 100 can implement a circuit in which an inductor and a capacitor are connected in series, or a circuit in which two capacitors are connected in series.

[0109] In one example, the reactive element is an inductor, and an inductor and a capacitor are connected in series between the switch component and the third pin 130 and the fourth pin 140, respectively. For example, an inductor 1 is connected in series with the first internal branch 101, and a capacitor 1 is connected in series with the second internal branch 102. In other words, the tuning device 100 can implement a circuit in which an inductor and a capacitor are connected in series, or a circuit in which two inductors are connected in series.

[0110] Optionally, the branch reactance includes a variable capacitor.

[0111] Optionally, the signal controller is used to switch different capacitance values ​​of the branch reactance.

[0112] Optionally, the branch reactance includes a variable inductor.

[0113] Optionally, the signal controller is used to switch different inductance values ​​of the branch reactance.

[0114] Furthermore, the combination of reactive elements, branch reactances, and switch components can achieve more circuit states. For example, if the reactive element is a variable capacitor that can switch between at least eight different capacitance values, the switch component can achieve four different circuit connection states, and a variable capacitor capable of achieving two different capacitance values ​​is connected in series with the first internal branch 101, then the tuning device 100 can achieve 8×(3+2) circuit states.

[0115] Optionally, the tuning device 100 may further include: drivers, a voltage regulator, a charge pump, and electrostatic discharge (ESD) components.

[0116] Among them, the driver can be the driver chip of the tuning device 100; the voltage stabilizer is used to stabilize the input voltage signal so that the voltage signal meets the usage requirements; the booster is used to increase the input voltage signal, such as increasing the input voltage of 1V to 3V to meet the usage requirements; the ESD component plays the role of electrostatic protection to protect the device from electrostatic hazards.

[0117] Optionally, the tuning device 100 may further include a substrate for supporting components within the tuning device 100 .

[0118] In the present application, the tuning device 100 can be applied to an antenna device, and the frequency band of the antenna radiator can be adjusted in two ways.

[0119] Method 1

[0120] Optionally, the reactance element and / or branch reactance inside the tuning device 100 can be used to adjust the impedance position of the antenna radiator on the Smith chart.

[0121] For example, when the capacitor is grounded and connected in parallel to the connection path between the feed point and the antenna radiator, the impedance position of the antenna radiator on the Smith chart can be adjusted clockwise from the first or second quadrant to the third or fourth quadrant.

[0122] For another example, when the inductor is grounded and connected in parallel to the connection path between the feed point and the antenna radiator, the impedance position of the antenna radiator on the Smith chart can be adjusted counterclockwise from the third or fourth quadrant to the first or second quadrant.

[0123] For another example, when a capacitor is connected in series in the connection path between the feed point and the antenna radiator, the impedance position of the antenna radiator on the Smith chart can be adjusted counterclockwise from the first or second quadrant to the third or fourth quadrant.

[0124] For another example, when an inductor is connected in series in the connection path between the feed point and the antenna radiator, the impedance position of the antenna radiator on the Smith chart can be adjusted clockwise from the third or fourth quadrant to the first or second quadrant.

[0125] Method 2

[0126] Optionally, the switch component is used to adjust the circuit state of the circuit where the tuning device 100 is located, and adjust the frequency band of the antenna radiator.

[0127] Optionally, the open / closed state of the first internal branch corresponds to two frequency bands, or the open / closed state of the second internal branch corresponds to two frequency bands.

[0128] In an example, a state in which the first inscribed branch 101 is connected and the second inscribed branch 102 is disconnected corresponds to frequency band 1; a state in which the first inscribed branch 101 is disconnected and the second inscribed branch 102 is connected corresponds to frequency band 2; a state in which both the first inscribed branch 101 and the second inscribed branch 102 are disconnected corresponds to frequency band 3; a state in which both the first inscribed branch 101 and the second inscribed branch 102 are connected corresponds to frequency band 4.

[0129] Optionally, the tuning device further includes a grounding point, which is connected to one of the first pin 110 , the second pin 120 , the third pin 130 , and the fourth pin 140 .

[0130] Figure 2 : is a schematic structural diagram of an antenna device provided in an embodiment of the present application. The antenna device 200 includes a first antenna radiator, a feeding point, and a tuning circuit. The tuning circuit is configured to be connected between the first antenna radiator and the feeding point, wherein a first end of the tuning circuit is connected to the feeding point, and a second end of the tuning circuit is connected to one end of the first antenna radiator. The tuning circuit includes N such as Figure 1 The tuning device 100, wherein at least two of the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140 of each tuning device 100 in the N tuning devices 100 are configured to be connected between the first antenna radiator and the feeding point, and N is a positive integer greater than or equal to 1.

[0131] The connection relationship, structure and function of each component are described in detail below.

[0132] F. First antenna radiator

[0133] The first antenna radiator is used to receive signals, or to receive and send signals.

[0134] G. Feeding point

[0135] The feeding point is used to provide a feed source for the first antenna radiator.

[0136] H. Tuning device 100

[0137] The tuning device 100 is the Figure 1 The antenna arrangement 200 includes one or more tuning devices 100 .

[0138] The pins of the tuning device 100 connected between the first antenna radiator and the feed point may be any at least two pins among the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140. Each tuning device 100 is connected to the tuning circuit through at least two of its first pin 110, second pin 120, third pin 130, and fourth pin 140.

[0139] In one example, at least two of the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140 are connected between the first antenna radiator and the feed point. Alternatively, two pins may be connected between the first antenna radiator and the feed point. For example, the first pin 110 is connected to the feed point, the second pin 120 is connected to one end of the first antenna radiator, and the inductive component within the tuning device 100 is connected in series in the connection path between the feed point and the first antenna radiator to perform a tuning function. An inductive component is externally connected to the third pin 130 and / or the fourth pin 140 and is grounded.

[0140] In one example, at least two of the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140 are connected between the first antenna radiator and the feed point. Alternatively, three pins may be connected between the first antenna radiator and the feed point. For example, the first pin 110 is connected to the feed point, the third pin 130 and the fourth pin 140 are both connected to one end of the first antenna radiator, and the second pin 120 is grounded.

[0141] In one example, at least two of the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140 are connected between the first antenna radiator and the feed point. Alternatively, four pins may be connected between the first antenna radiator and the feed point. For example, the first pin 110 and the second pin 120 are both connected to the feed point, and the third pin 130 and the fourth pin 140 are both connected to one end of the first antenna radiator.

[0142] Optionally, the N tuning devices 100 include a first tuning device, the second pin of the first tuning device is connected to the first pin, third pin or fourth pin of the first tuning device, or the second pin of the first tuning device is connected to the first end of the tuning circuit or the second end of the tuning circuit.

[0143] In other words, a connection path exists between both ends of the reactance element inside the first tuning device.

[0144] In one example, the first pin of the first tuning device is connected to the feeding point, the second pin is connected to the first pin, and the second pin is connected to the feeding point; the third pin and / or the fourth pin is connected to one end of the first antenna radiator.

[0145] In one example, N is a positive integer greater than or equal to 2, and the tuning circuit includes a tuning device 1 and a tuning device 2, wherein the first pin of the tuning device 1 is connected to the feeding point, the third pin and / or the fourth pin of the tuning device 1 is connected to the first pin of the tuning device 2, and the third pin and / or the fourth pin of the tuning device 2 is connected to one end of the first antenna radiator; the tuning device 2 is the first tuning device, and the second pin of the tuning device 2 is connected to the first pin of the tuning device 1, that is, the tuning device 2 is connected to the feeding point.

[0146] In one example, the first pin of the first tuning device is connected to one end of the first antenna radiator, and the second pin is connected to the first pin, then the second pin is connected to one end of the first antenna radiator; the third pin and / or the fourth pin are connected to the feeding point.

[0147] In one example, N is a positive integer greater than or equal to 2, and the tuning circuit includes a tuning device 1 and a tuning device 2, wherein the first pin of the tuning device 1 is connected to one end of the first antenna radiator, the third pin and / or the fourth pin of the tuning device 1 is connected to the first pin of the tuning device 2, and the third pin and / or the fourth pin of the tuning device 2 is connected to the feeding point; the tuning device 2 is the first tuning device, the second pin of the tuning device 2 is connected to the first pin of the tuning device 1, and the tuning device 2 is connected to one end of the first antenna radiator.

[0148] Optionally, the antenna device 200 further includes a grounding point; wherein the N tuning devices 100 include a fourth tuning device, and at least one of the first pin, the second pin, the third pin, and the fourth pin of the fourth tuning device is connected to the grounding point.

[0149] In other words, the N tuning devices 100 include a fourth tuning device with a grounded pin. The grounded pin may be one or more of the first pin, the second pin, the third pin, and the fourth pin of the fourth tuning device. For example, the N tuning devices 100 include a fourth tuning device, wherein the first pin of the fourth tuning device is connected to the feed point, the second pin is connected to the ground point, and the third pin and / or the fourth pin are connected to one end of the first antenna radiator.

[0150] Optionally, N is a positive integer greater than or equal to 2, and at least one of the first pin, second pin, third pin, and fourth pin of any tuning device among the N tuning devices 100 is connected to at least one of the first pin, second pin, third pin, and fourth pin of a tuning device among other tuning devices among the N tuning devices 100 except the any tuning device.

[0151] In other words, the tuning circuit includes multiple Figure 1 In the illustrated tuning devices 100, each tuning device 100 is connected to another via its respective first pin, second pin, third pin, and / or fourth pin. In other words, multiple tuning devices are connected in series between the first antenna radiator and the feed point. For example, the first pin of tuning device 1 is connected to the second pin of tuning device 2, the third pin of tuning device 1 is connected to the feed point, and the first pin of tuning device 2 is connected to one end of the first antenna radiator. There are many similar connection methods, which will not be detailed here.

[0152] Optionally, the N tuning devices 100 include: a fifth tuning device and a sixth tuning device, wherein at least one of the second pin, the third pin, and the fourth pin of the fifth tuning device is connected to the first pin of the sixth tuning device.

[0153] In other words, the fifth tuning device and the sixth tuning device are connected in series by connecting the first pin of the sixth tuning device to at least one of the second pin, the third pin, and the fourth pin of the fifth tuning device.

[0154] In one example, the first pin of the fifth tuning device is connected to the feed point, the second pin of the fifth tuning device is connected to the first pin of the sixth tuning device, and the third pin and / or fourth pin of the sixth tuning device is connected to one end of the first antenna radiator.

[0155] In an example, the first pin of the fifth tuning device is connected to the feed point, the third pin of the fifth tuning device is connected to the first pin of the sixth tuning device, and the third pin and / or fourth pin of the sixth tuning device is connected to one end of the first antenna radiator.

[0156] In an example, the first pin of the fifth tuning device is connected to one end of the first antenna radiator, the fourth pin of the fifth tuning device is connected to the first pin of the sixth tuning device, and the third pin and / or fourth pin of the sixth tuning device is connected to the feeding point.

[0157] There are many similar connection methods, which will not be described here.

[0158] Optionally, the tuning circuit further comprises:

[0159] a first external branch, one end of which is connected to the third pin or the fourth pin of the fifth tuning device;

[0160] a second external branch, one end of the second external branch being connected to the third pin or the fourth pin of the fifth tuning device;

[0161] Wherein, the sixth tuning device is arranged on the first external branch.

[0162] That is, two external branches, namely the first external branch and the second external branch, are led out from the third pin and / or the fourth pin of the fifth tuning device, and the sixth tuning device is connected in series to one of the external branches, namely the first external branch.

[0163] Optionally, at least one of the first pin, the second pin, the third pin, and the fourth pin of the fifth tuning device is connected to at least one of the first pin, the second pin, the third pin, and the fourth pin of the sixth tuning device.

[0164] Optionally, the N tuning devices 100 further include: a seventh tuning device, arranged on the second external branch.

[0165] That is, of the two external branches extending from the fifth tuning device, one external branch can be connected in series with the sixth tuning device, and the other external branch can be connected in series with the seventh tuning device. The feed point can be connected to one end of the first antenna radiator via the fifth and sixth tuning devices, and can also be connected to one end of the first antenna radiator via the fifth and seventh tuning devices. In other words, the sixth tuning device and the seventh tuning device are connected in parallel.

[0166] Optionally, at least one of the first pin, the second pin, the third pin, and the fourth pin of the fifth tuning device is connected to at least one of the first pin, the second pin, the third pin, and the fourth pin of the seventh tuning device.

[0167] Optionally, the antenna device 200 further includes: a single-pole multi-throw switch tuning device, which is arranged on the second external branch.

[0168] A single-pole, multi-throw (SPMT) switch tuning device includes a single-pole, multi-throw (SPMT) switch assembly, a grounding point, and multiple reactance elements, at least one of which is connected to the grounding point. The SPMT switch assembly includes a fixed terminal and multiple movable terminals, one end of each reactance element is connected to the multiple movable terminals of the SPMT switch assembly, and the SPMT switch assembly is configured to switch between the multiple reactance elements. For example, the SPMT switch tuning device includes a single-pole, double-throw (SPDT) switch assembly, a grounding point, a first reactance element, and a second reactance element. The SPDT switch assembly includes a fixed terminal, a first movable terminal, and a second movable terminal. One end of the first reactance element is connected to the first movable terminal; one end of the second reactance element is connected to the fixed terminal, and the other end of the second reactance element is connected to the second movable terminal; and the other end of the first reactance element is connected to the grounding point.

[0169] That is, of the two external branches extending from the fifth tuning device, one is connected in series with the sixth tuning device, and the other is connected in series with the single-pole, multi-throw switch tuning device. The feed point can be connected to one end of the first antenna radiator via the fifth and sixth tuning devices, and can also be connected to one end of the first antenna radiator via the fifth tuning device and the single-pole, multi-throw switch tuning device. In other words, the sixth tuning device is connected in parallel with the single-pole, multi-throw switch tuning device.

[0170] Optionally, the first antenna radiator is a loop antenna radiator.

[0171] Optionally, the antenna device 200 further includes a packaging substrate for supporting components within the antenna device 200 .

[0172] [Example 1]

[0173] like Figure 3 As shown, the antenna device 300 includes a first antenna radiator 320 , a feeding point 330 , and a tuning circuit. The tuning circuit is configured to be connected between the first antenna radiator 320 and the feeding point 330 .

[0174] The tuning circuit includes a Figure 1 The tuning device 340 has a first pin 341 connected to the feed point 330, and a third pin 343 and a fourth pin 344 of the tuning device 340 are connected to one end of the first antenna radiator 320. A reactive element 345 is connected in series between the third pin 343 and the first antenna radiator 320, and a reactive element 346 is connected in series between the fourth pin 344 and the first antenna radiator 320.

[0175] The switch component inside the tuning device 340 can switch the state of the circuit connected between the feed point 330 and the first antenna radiator 320 . For example, the switch component can switch the feeding point 330 to be connected to one end of the first antenna radiator 320 through the connection path between the first pin 341 and the third pin 343, while the connection path between the first pin 341 and the fourth pin 344 is disconnected, then the reactance element 345 plays a tuning role; the switch component can also switch the feeding point 330 to be connected to one end of the first antenna radiator 320 through the connection path between the first pin 341 and the fourth pin 344, while the connection path between the first pin 341 and the third pin 343 is disconnected, then the reactance element 346 plays a tuning role; the switch component can also switch the feeding point 330 to be connected to one end of the first antenna radiator 320 through the connection path between the first pin 341 and the third pin 343, and the feeding point 330 to be connected to one end of the first antenna radiator 320 through the connection path between the first pin 341 and the fourth pin 344, then the reactance element 345 and the reactance element 346 both play a tuning role.

[0176] The second pin 342 of the tuning device 340 may be grounded. The second pin 342 of the tuning device 340 may also be connected to the first pin 341 , the third pin 343 , and the fourth pin 344 of the tuning device 340 . Figure 3 FIG. 3 is a schematic diagram showing the connection between the second pin 342 of the tuning device 340 and the first pin 341 of the tuning device 340 .

[0177] [Example 2]

[0178] like Figure 4 As shown, the antenna device 400 includes a packaging substrate, on which a first antenna radiator 420 , a feeding point 430 , and a tuning circuit are provided. The tuning circuit is configured to be connected between the first antenna radiator 420 and the feeding point 430 .

[0179] The tuning circuit includes Figure 1The tuning devices 440 and 450 are described above, wherein the first pin 441 of the tuning device 440 is connected to the feed point 430, the third pin 443 and the fourth pin 444 of the tuning device 440 are connected to the first pin 451 of the tuning device 450, and the third pin 453 and the fourth pin 454 of the tuning device 450 are connected to one end of the first antenna radiator 420. A reactive element 445 is connected in series between the third pin 443 of the tuning device 440 and the first pin 451 of the tuning device 450, and a reactive element 446 is connected in series between the fourth pin 444 of the tuning device 440 and the first pin 451 of the tuning device 450. A reactive element 455 is connected in series between the third pin 453 of the tuning device 450 and the first antenna radiator 420, and a reactive element 456 is connected in series between the fourth pin 454 of the tuning device 450 and the first antenna radiator 420.

[0180] The tuning device 440 and the switch components within the tuning device 450 can both switch the state of the circuit connected between the feed point 430 and the first antenna radiator 420. For example, the switch component within the tuning device 440 can switch the feed point 430 to be connected to the first antenna radiator 420 via the connection path between the first pin 441 and the third pin 443 of the tuning device 440, while disconnecting the connection path between the first pin 441 and the fourth pin 444 of the tuning device 440. In this case, the reactive element 445 performs a tuning function. The switch component within the tuning device 450 can also switch the feed point 430 to be connected to one end of the first antenna radiator 420 via the connection path between the first pin 451 and the fourth pin 454 of the tuning device 450, while disconnecting the connection path between the first pin 451 and the third pin 453 of the tuning device 450. In this case, the reactive element 456 performs a tuning function.

[0181] The second pin 442 of the tuning device 440 can be grounded. The second pin 442 of the tuning device 440 can also be connected to the first pin 441, the third pin 443, and the fourth pin 444 of the tuning device 440. Similarly, the second pin 452 of the tuning device 450 can be grounded. The second pin 452 of the tuning device 450 can also be connected to the first pin 451, the third pin 453, and the fourth pin 454 of the tuning device 450. Figure 4 Schematic diagram showing that the second pin 442 of the tuning device 440 is grounded and the second pin 452 of the tuning device 450 is grounded.

[0182] The reactive element of tuning device 440 can achieve eight different capacitance values, and the switch component of tuning device 440 can achieve at least three states. Therefore, tuning device 440 can achieve at least 24 circuit states. Similarly, the reactive element of tuning device 450 can achieve eight different capacitance values, and the switch component of tuning device 450 can achieve at least three states. Therefore, tuning device 450 can achieve at least 24 circuit states. Therefore, the tuning circuit can achieve at least 24×24 circuit states. More circuit states enable more frequency bands.

[0183] [Example 3]

[0184] like Figure 5 As shown, the antenna device 500 includes a packaging substrate, on which a first antenna radiator 520 , a feeding point 530 , and a tuning circuit are provided. The tuning circuit is configured to be connected between the first antenna radiator 520 and the feeding point 530 .

[0185] The tuning circuit includes Figure 1 The tuning device 540 and the tuning device 550 are described as follows: a first pin 541 of the tuning device 540 is connected to the feed point 530; a second pin 542 of the tuning device 540 is connected to the first pin 551 of the tuning device 550; and a third pin 553 and a fourth pin 554 of the tuning device 550 are connected to one end of the first antenna radiator 520. A reactive element 545 is connected in series between the third pin 543 of the tuning device 540 and the ground point, and a reactive element 546 is connected in series between the fourth pin 544 of the tuning device 540 and the ground point. A reactive element 555 is connected in series between the third pin 553 of the tuning device 550 and the first antenna radiator 520, and a reactive element 556 is connected in series between the fourth pin 554 of the tuning device 550 and the first antenna radiator 520.

[0186] The switching components within tuning device 540 and tuning device 550 can both switch the state of the circuit connected between feed point 530 and first antenna radiator 520. For example, the switching component within tuning device 540 can switch the first pin 541 to ground via the connection path between the first pin 541 and the third pin 543, while disconnecting the connection path between the first pin 541 and the fourth pin 544 of the tuning device 540. In this case, reactive element 545 performs a tuning function. The switching component within tuning device 550 can switch the feeding point 530 to be connected to one end of the first antenna radiator 520 via the connection path between the first pin 551 and the fourth pin 554 of the tuning device 550, while disconnecting the connection path between the first pin 551 and the third pin 553 of the tuning device 550. In this case, reactive element 556 performs a tuning function.

[0187] The second pin 552 of the tuning device 550 may be grounded. The second pin 552 of the tuning device 550 may also be connected to the first pin 551 , the third pin 553 , and the fourth pin 554 of the tuning device 550 . Figure 5 Schematic diagram showing that the second pin 552 of the tuning device 550 is grounded.

[0188] The reactive element of tuning device 540 can achieve eight different capacitance values, and the switch component of tuning device 540 can achieve at least three states. Therefore, tuning device 540 can achieve at least 24 circuit states. Similarly, the reactive element of tuning device 550 can achieve eight different capacitance values, and the switch component of tuning device 550 can achieve at least three states. Therefore, tuning device 550 can achieve at least 24 circuit states. Therefore, the tuning circuit can achieve at least 24×24 circuit states. More circuit states enable more frequency bands.

[0189] [Example 4]

[0190] like Figure 6 As shown, the antenna device 600 includes a packaging substrate, on which a first antenna radiator 620 , a feeding point 630 , and a tuning circuit are provided. The tuning circuit is configured to be connected between the first antenna radiator 620 and the feeding point 630 .

[0191] The tuning circuit includes Figure 1 The tuning device 640 and the tuning device 650 are described as follows: the first pin 641 of the tuning device 640 is connected to the feed point 630, the second pin 642 of the tuning device 640 is connected to the first pin 651 of the tuning device 650, and the second pin 652 of the tuning device 650 is connected to one end of the first antenna radiator 620. A reactive element 645 is connected in series between the third pin 643 of the tuning device 640 and the ground point, and a reactive element 646 is connected in series between the fourth pin 644 of the tuning device 640 and the ground point. A reactive element 655 is connected in series between the third pin 653 of the tuning device 650 and the ground point, and a reactive element 656 is connected in series between the fourth pin 654 of the tuning device 650 and the ground point.

[0192] The switch components within tuning device 640 and tuning device 650 can both switch the state of the circuit connected between feed point 630 and first antenna radiator 620. For example, the switch component within tuning device 640 can switch the first pin 641 to ground via the connection path between the first pin 641 and the third pin 643, while disconnecting the connection path between the first pin 641 and the fourth pin 644 of tuning device 640. In this case, reactive element 645 performs a tuning function. The switch component within tuning device 650 can switch the first pin 651 to ground via the connection path between the first pin 651 and the third pin 653, while disconnecting the connection path between the first pin 651 and the fourth pin 654 of tuning device 650. In this case, reactive element 655 performs a tuning function.

[0193] The reactive element of tuning device 640 can achieve eight different capacitance values, and the switch component of tuning device 640 can achieve at least three states. Therefore, tuning device 640 can achieve at least 24 circuit states. Similarly, the reactive element of tuning device 650 can achieve eight different capacitance values, and the switch component of tuning device 650 can achieve at least three states. Therefore, tuning device 650 can achieve at least 24 circuit states. Therefore, the tuning circuit can achieve at least 24×24 circuit states. More circuit states enable more frequency bands.

[0194] [Example 5]

[0195] like Figure 7 As shown, the antenna device 700 includes a packaging substrate, on which a first antenna radiator 720 , a feeding point 730 , and a tuning circuit are provided. The tuning circuit is configured to be connected between the first antenna radiator 720 and the feeding point 730 .

[0196] The tuning circuit includes Figure 1 The tuning device 740 and the tuning device 750 are described above, wherein the first pin 741 of the tuning device 740 is connected to the feed point 730, the third pin 743 and the fourth pin 744 of the tuning device 740 are connected to the first pin 751 of the tuning device 750, and the second pin 752 of the tuning device 750 is connected to one end of the first antenna radiator 720. A reactive element 745 is connected in series between the third pin 743 of the tuning device 740 and the first pin 751 of the tuning device 750, and a reactive element 746 is connected in series between the fourth pin 744 of the tuning device 740 and the first pin 751 of the tuning device 750. A reactive element 755 is connected in series between the third pin 753 of the tuning device 750 and the ground point, and a reactive element 756 is connected in series between the fourth pin 754 of the tuning device 750 and the ground point.

[0197] The switching components within the tuning device 740 and the tuning device 750 can both switch the state of the circuit connected between the feed point 730 and the first antenna radiator 720. For example, the switching component within the tuning device 740 can switch the feed point 730 to be connected to one end of the first antenna radiator 720 via the connection path between the first pin 741 and the fourth pin 744 of the tuning device 740, while disconnecting the connection path between the first pin 741 and the third pin 743 of the tuning device 740. In this case, the reactive element 746 performs a tuning function. The switching component within the tuning device 750 can switch the first pin 751 to be grounded via the connection path between the first pin 751 and the third pin 753, while disconnecting the connection path between the first pin 751 and the fourth pin 754 of the tuning device 750. In this case, the reactive element 755 performs a tuning function.

[0198] The second pin 742 of the tuning device 740 may be grounded. The second pin 742 of the tuning device 740 may also be connected to the first pin 741 , the third pin 743 , and the fourth pin 744 of the tuning device 740 . Figure 7 Schematic diagram showing that the second pin 742 of the tuning device 740 is grounded.

[0199] The reactive element of tuning device 740 can achieve eight different capacitance values, and the switch component of tuning device 740 can achieve at least three states. Therefore, tuning device 740 can achieve at least 24 circuit states. Similarly, the reactive element of tuning device 750 can achieve eight different capacitance values, and the switch component of tuning device 750 can achieve at least three states. Therefore, tuning device 750 can achieve at least 24 circuit states. Therefore, the tuning circuit can achieve at least 24×24 circuit states. More circuit states enable more frequency bands.

[0200] [Example 6]

[0201] like Figure 8 As shown, the antenna device 800 includes a packaging substrate, on which a loop antenna radiator 820 , a feeding point 830 , and a tuning circuit are provided. The tuning circuit is configured to be connected between the loop antenna radiator 820 and the feeding point 830 .

[0202] The tuning circuit includes Figure 1The tuning device 840, the tuning device 850, and the tuning device 860 are described. The first pin 841 of the tuning device 840 is connected to the feed point 830, the third pin 843 of the tuning device 840 is connected to the fourth pin 854 of the tuning device 850, and the fourth pin 844 of the tuning device 840 is connected to the first pin 861 of the tuning device 860. The first pin 851 of the tuning device 850 is connected to one end of the loop antenna radiator 820. The third pin 863 of the tuning device 860 is connected to the other end of the loop antenna radiator 820. The third pin 853 of the tuning device 850 can be grounded. The fourth pin 864 of the tuning device 860 can be grounded.

[0203] A reactive element 845 and a reactive element 856 are connected in series between the third pin 843 of the tuning device 840 and the fourth pin 854 of the tuning device 850, a reactive element 846 is connected in series between the fourth pin 844 of the tuning device 840 and the first pin 861 of the tuning device 860, a reactive element 855 is connected in series between the third pin 853 of the tuning device 850 and the grounding point, a reactive element 866 is connected in series between the fourth pin 864 of the tuning device 860 and the grounding point, and a reactive element 865 is connected in series between the third pin 863 of the tuning device 860 and the first antenna radiator.

[0204] The switch components within tuning devices 840, 850, and 860 can each switch the state of the circuit connected between the feed point 830 and the loop antenna radiator 820. For example, the switch components within tuning devices 840 and 860 can switch the feed point 830 to be connected to one end of the loop antenna radiator 820 via the connection path between the first pin 841 and the fourth pin 844 of tuning device 840, and the first pin 861 and the third pin 863 of tuning device 860, and the switch component within tuning device 850 can switch the loop antenna radiator 820 to be grounded via the connection path between the first pin 851 and the third pin 853 of tuning device 850. In this way, the reactive elements 846, 855, and 865 perform a tuning function.

[0205] The second pin 842 of the tuning device 840 may be grounded. The second pin 842 of the tuning device 840 may also be connected to the first pin 841 , the third pin 843 , and the fourth pin 844 of the tuning device 840 . Figure 8 Schematic diagram showing that the second pin 842 of the tuning device 840 is grounded.

[0206] Similarly, the second pin 852 of the tuning device 850 can be grounded. The second pin 852 of the tuning device 850 can also be connected to the first pin 851 , the third pin 853 , and the fourth pin 854 of the tuning device 850 . Figure 8Schematic diagram showing that the second pin 852 of the tuning device 850 is grounded.

[0207] Similarly, the second pin 862 of the tuning device 860 can be grounded. The second pin 862 of the tuning device 860 can also be connected to the first pin 861 , the third pin 863 , and the fourth pin 864 of the tuning device 860 . Figure 8 Schematic diagram showing the connection between the second pin 862 of the tuning device 860 and the first pin 861 of the tuning device 860 .

[0208] [Example 7]

[0209] like Figure 9 As shown, the antenna device 900 includes a packaging substrate, on which a loop antenna radiator 920 , a feeding point 930 , and a tuning circuit are provided. The tuning circuit is configured to be connected between the loop antenna radiator 920 and the feeding point 930 .

[0210] The tuning circuit includes Figure 1 The tuning device 940, tuning device 950, and single-pole double-throw switch assembly and tuning device 960 are described. A first pin 941 of tuning device 940 is connected to the feed point 930, a third pin 943 of tuning device 940 is connected to a second movable terminal 963 of the single-pole double-throw switch assembly and tuning device 960, and a fourth pin 944 of tuning device 940 is connected to a first pin 951 of tuning device 950. A fixed terminal 961 of the single-pole double-throw switch assembly and tuning device 960 is connected to one end of the loop antenna radiator 920. A third pin 953 of tuning device 950 is connected to the other end of the loop antenna radiator 920. The first movable terminal 962 of the single-pole double-throw switch assembly and tuning device 960 can be grounded. A fourth pin 954 of tuning device 950 can be grounded.

[0211] An inductive element is connected in series between the third pin 943 of the tuning device 940 and the second moving end 963 of the single-pole double-throw switch assembly tuning device 960, an inductive element 946 is connected in series between the fourth pin 944 of the tuning device 940 and the first pin 951 of the tuning device 950, an inductive element is connected in series between the first moving end 962 of the single-pole double-throw switch assembly tuning device 960 and the grounding point, an inductive element 956 is connected in series between the fourth pin 954 of the tuning device 950 and the grounding point, and an inductive element 955 is connected in series between the third pin 953 of the tuning device 950 and the first antenna radiator.

[0212] Among them, the tuning device 940, the single-pole double-throw switch assembly tuning device 960, and the switch assembly inside the tuning device 950 can all switch the state of the circuit connected between the feed point 930 and the loop antenna radiator 920. For example, the switch assembly inside the tuning device 940 and the tuning device 950 can switch the feed point 930 to be connected to one end of the loop antenna radiator 920 through the connection path between the first pin 941 and the fourth pin 944 of the tuning device 940 and the first pin 951 and the third pin 953 of the tuning device 950, and the switch assembly inside the single-pole double-throw switch assembly tuning device 960 can switch the loop antenna radiator 920 to be grounded through the connection path between the fixed terminal 961 and the first movable terminal 962 of the single-pole double-throw switch assembly tuning device 960, so that the inductive element 946 and the inductive element 955 can play a tuning role.

[0213] The second pin 942 of the tuning device 940 can be grounded. The second pin 942 of the tuning device 940 can also be connected to the first pin 941 , the first active terminal 942 , and the fourth pin 944 of the tuning device 940 . Figure 9 Schematic diagram showing that the second pin 942 of the tuning device 940 is grounded.

[0214] Similarly, the second pin 952 of the tuning device 950 can be grounded. The second pin 952 of the tuning device 950 can also be connected to the first pin 951 , the third pin 953 , and the fourth pin 954 of the tuning device 950 . Figure 9 FIG. 1 is a schematic diagram showing the connection between the second pin 952 of the tuning device 950 and the first pin 951 of the tuning device 950 .

[0215] Figure 10 It is a schematic structural diagram of the antenna device provided in an embodiment of the present application. The antenna device 1000 includes a first antenna radiator, a second antenna radiator, a feeding point, and a tuning circuit. The tuning circuit is configured to be connected between the first antenna radiator and the feeding point, and is configured to be connected between the second antenna radiator and the feeding point. The tuning circuit also includes a first end, a second end, and a third end; wherein the first end of the tuning circuit is connected to the feeding point, the second end of the tuning circuit is connected to one end of the first antenna radiator, and the third end of the tuning circuit is connected to one end of the second antenna radiator. The tuning circuit includes N such as Figure 1 The tuning device 100 is connected between the first antenna radiator and the feeding point, and the tuning circuit includes M such as Figure 1The tuning device 100 is connected between the second antenna radiator and the feeding point, wherein at least two of the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140 of each tuning device 100 in the N tuning devices 100 are connected between the first antenna radiator and the feeding point, and at least two of the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140 of each tuning device 100 in the M tuning devices 100 are connected between the second antenna radiator and the feeding point, and N and M are both positive integers greater than or equal to 1.

[0216] I. First Antenna Radiator

[0217] The first antenna radiator is used to receive signals, or to receive and send signals.

[0218] J. Second Antenna Radiator

[0219] The first antenna radiator is used to receive signals, or to receive and send signals, and its operating frequency band is the same as or different from that of the first antenna radiator.

[0220] K. Feeding point

[0221] The feeding point is used to provide a feed source for the first antenna radiator.

[0222] L. Tuning device

[0223] The tuning device is the one mentioned above Figure 1 One possible form of a tuning device 100 is shown. The antenna device 1000 includes one or more tuning devices.

[0224] In other words, including Figure 1 The tuning circuit of the tuning device is connected to a plurality of antenna radiators, and each tuning device 100 is connected to the tuning circuit via at least two of its first pin 110 , second pin 120 , third pin 130 , and fourth pin 140 .

[0225] In one example, the tuning circuit includes M+N tuning devices 100 , where N tuning devices 100 are connected between the first antenna radiator and the feeding point, and M tuning devices 100 are connected between the second antenna radiator and the feeding point.

[0226] Optionally, the M tuning devices 100 include a second tuning device connected between the first end of the tuning circuit and the second end of the tuning circuit.

[0227] That is, the antenna device 1000 includes a second tuning device, which is connected both between the first antenna radiator and the feeding point and between the second antenna radiator and the feeding point.

[0228] Optionally, the tuning device includes a third tuning device, a third pin of the third tuning device is connected to the second end of the tuning circuit, and a fourth pin of the third tuning device is connected to the third end of the tuning circuit.

[0229] That is, the first inscribed branch 101 inside the third tuning device is used to connect one end of the first antenna radiator and the feeding point; the second inscribed branch 102 inside the third tuning device is used to connect one end of the second antenna radiator and the feeding point.

[0230] Optionally, the N tuning devices 100 include a first tuning device, the second pin of the first tuning device is connected to the first pin, third pin or fourth pin of the first tuning device, or the second pin of the first tuning device is connected to the first end of the tuning circuit or the second end of the tuning circuit.

[0231] In other words, both ends of the reactance element inside the first tuning device among the N tuning devices 100 are connected.

[0232] Optionally, the M tuning devices 100 include a first tuning device, the second pin of the first tuning device is connected to the first pin, third pin or fourth pin of the first tuning device, or the second pin of the first tuning device is connected to the first end of the tuning circuit or the second end of the tuning circuit.

[0233] In other words, both ends of the reactance element inside the first tuning device among the M tuning devices 100 are connected.

[0234] Optionally, the antenna device 1000 further includes a grounding point; wherein the N tuning devices 100 include a fourth tuning device, and at least one of the first pin, the second pin, the third pin, and the fourth pin of the fourth tuning device is connected to the grounding point.

[0235] In other words, the N tuning devices 100 include a fourth tuning device with a grounded pin. The grounded pin may be one or more of the first pin, the second pin, the third pin, and the fourth pin of the fourth tuning device.

[0236] Optionally, the antenna device 1000 further includes a grounding point; wherein the M tuning devices 100 include a fourth tuning device, and at least one of the first pin, the second pin, the third pin, and the fourth pin of the fourth tuning device is connected to the grounding point.

[0237] In other words, the M tuning devices 100 include a fourth tuning device with a grounded pin, and the grounded pin may be one or more of the first pin, the second pin, the third pin, and the fourth pin of the fourth tuning device.

[0238] [Example 8]

[0239] like Figure 11 As shown, the antenna device 1100 includes a first antenna radiator 1110, a second antenna radiator 1120, a feeding point 1130, and a tuning circuit, wherein the tuning circuit is configured to be connected between the first antenna radiator 1110 and the feeding point 1130, and the tuning circuit is configured to be connected between the second antenna radiator 1120 and the feeding point 1130.

[0240] The tuning circuit includes Figure 1 The tuning device 1140 , wherein a first pin 1141 of the tuning device 1140 is connected to the feeding point 1130 , a third pin 1143 of the tuning device 1140 is connected to one end of the first antenna radiator 1110 , and a fourth pin 1144 of the tuning device 1140 is connected to one end of the second antenna radiator 1120 .

[0241] A reactive element 1145 is connected in series between the third pin 1143 and the first antenna radiator 1110 , and a reactive element 1146 is connected in series between the fourth pin 1144 and the second antenna radiator 1120 .

[0242] The switch component inside the tuning device 1140 can switch the circuit connecting the feed point 1130 and the first antenna radiator 1110, and / or switch the circuit connecting the feed point 1130 and the second antenna radiator 1120. For example, the switch component can switch the feed point 1130 to be connected to one end of the first antenna radiator 1110 through the connection path between the first pin 1141 and the third pin 1143, while the connection path between the first pin 1141 and the fourth pin 1144 is disconnected, so that the tuning circuit plays a tuning role between the feed point 1130 and the first antenna radiator 1110; the switch component can also switch the feed point 1130 to be connected to one end of the second antenna radiator 1120 through the connection path between the first pin 1141 and the fourth pin 1144, while the connection path between the first pin 1141 and the third pin 1143 is disconnected. If the path is disconnected, the tuning circuit plays a tuning role between the feeding point 1130 and the second antenna radiator 1120; the switching component can also switch the feeding point 1130 to be connected to one end of the first antenna radiator 1110 through the connection path between the first pin 1141 and the third pin 1143, and the feeding point 1130 to be connected to one end of the second antenna radiator 1120 through the connection path between the first pin 1141 and the fourth pin 1144, then the tuning circuit plays a tuning role both between the feeding point 1130 and the first antenna radiator 1110 and between the feeding point 1130 and the second antenna radiator 1120.

[0243] The second pin 1142 of the tuning device 1140 may be grounded. The second pin 1142 of the tuning device 1140 may also be connected to the first pin 1141 , the third pin 1143 , and the fourth pin 1144 of the tuning device 1140 . Figure 11 Schematic diagram showing that the second pin 1142 of the tuning device 1140 is grounded.

[0244] [Example 9]

[0245] like Figure 12 As shown, the antenna device 1200 includes a packaging substrate, on which a first antenna radiator 1110, a second antenna radiator 1220, a feeding point 1230, and a tuning circuit are arranged, the tuning circuit configuration being connected between the first antenna radiator 1210 and the feeding point 1230, and the tuning circuit configuration being connected between the second antenna radiator 1220 and the feeding point 1230.

[0246] The tuning circuit includes Figure 1The tuning devices 1240, 1250, and 1260 are described. A first pin 1241 of the tuning device 1240 is connected to the feed point 1230, a third pin 1243 of the tuning device 1240 is connected to the first pin 1251 of the tuning device 1250, and a fourth pin 1244 of the tuning device 1240 is connected to the first pin 1261 of the tuning device 1260. Third and fourth pins 1253 and 1254 of the tuning device 1250 are connected to one end of the first antenna radiator 1210, and a third and fourth pins 1263 and 1264 of the tuning device 1260 are connected to one end of the second antenna radiator 1220.

[0247] The third pin 1243 and the fourth pin 1254 of the tuning device 1240 can be connected to an external reactance element. Figure 12 As shown, the third pin 1243 of the tuning device 1240 is externally connected to the reactance element 1245, and the fourth pin 1244 of the tuning device 1240 is externally connected to the reactance element 1246. Similarly, the third pin 1253 and the fourth pin 1254 of the tuning device 1250 can be externally connected to the reactance element. Figure 12 As shown, the third pin 1253 of the tuning device 1250 is externally connected to the reactance element 1255, and the fourth pin 1254 of the tuning device 1250 is externally connected to the reactance element 1256. Similarly, the third pin 1263 and the fourth pin 1254 of the tuning device 1260 can be externally connected to the reactance element. Figure 12 As shown, the third pin 1263 of the tuning device 1260 is externally connected to the reactance element 1265 , and the fourth pin 1264 of the tuning device 1260 is externally connected to the reactance element 1266 .

[0248] The switch component inside the tuning device 1240 can switch the circuit connecting the feed point 1230 and the first antenna radiator 1210, and / or switch the circuit connecting the feed point 1230 and the second antenna radiator 1220. For example, the switch component can switch the feed point 1230 to be connected to one end of the first antenna radiator 1210 through the connection path between the first pin 1241 and the third pin 1243, while the connection path between the first pin 1241 and the fourth pin 1244 is disconnected, so that the tuning circuit plays a tuning role between the feed point 1230 and the first antenna radiator 1210; the switch component can also switch the feed point 1230 to be connected to one end of the second antenna radiator 1220 through the connection path between the first pin 1241 and the fourth pin 1244, while the connection path between the first pin 1241 and the third pin 1243 is disconnected. If the path is disconnected, the tuning circuit plays a tuning role between the feeding point 1230 and the second antenna radiator 1220; the switching component can also switch the feeding point 1230 to be connected to one end of the first antenna radiator 1210 through the connection path between the first pin 1241 and the third pin 1243, and the feeding point 1230 to be connected to one end of the second antenna radiator 1220 through the connection path between the first pin 1241 and the fourth pin 1244, then the tuning circuit plays a tuning role both between the feeding point 1230 and the first antenna radiator 1210 and between the feeding point 1230 and the second antenna radiator 1220.

[0249] The switch component within the tuning device 1250 can switch the circuit state of the connection path between the feed point 1230 and the first antenna radiator 1210. For example, the switch component within the tuning device 1250 can switch the feed point 830 to be connected to one end of the first antenna radiator 1210 via the connection path between the first pin 1251 and the third pin 1253 of the tuning device 1250. The switch component within the tuning device 1250 can also switch the feed point 830 to be connected to one end of the first antenna radiator 1210 via the connection path between the first pin 1251 and the fourth pin 1254 of the tuning device 1250.

[0250] The switch component within the tuning device 1260 can switch the circuit state of the connection path between the feed point 1230 and the second antenna radiator 1220. For example, the switch component within the tuning device 1260 can switch the feed point 830 to be connected to one end of the second antenna radiator 1220 via the connection path between the first pin 1261 and the third pin 1263 of the tuning device 1260. The switch component within the tuning device 1260 can also switch the feed point 830 to be connected to the second antenna radiator 1220 via the connection path between the first pin 1261 and the fourth pin 1264 of the tuning device 1260.

[0251] The second pin 1242 of the tuning device 1240 may be grounded. The second pin 1242 of the tuning device 1240 may also be connected to the first pin 1241 , the third pin 1243 , and the fourth pin 1244 of the tuning device 1240 . Figure 12 Schematic diagram showing that the second pin 1242 of the tuning device 1240 is grounded.

[0252] Similarly, the second pin 1252 of the tuning device 1250 can be grounded. The second pin 1252 of the tuning device 1250 can also be connected to the first pin 1251 , the third pin 1253 , and the fourth pin 1254 of the tuning device 1250 . Figure 12 Schematic diagram showing the connection between the second pin 1252 of the tuning device 1250 and the first pin 1251 of the tuning device 1250 .

[0253] Similarly, the second pin 1262 of the tuning device 1260 can be grounded. The second pin 1262 of the tuning device 1260 can also be connected to the first pin 1261 , the third pin 1263 , and the fourth pin 1264 of the tuning device 1260 . Figure 12 Schematic diagram showing the connection between the second pin 1262 of the tuning device 1260 and the first pin 1261 of the tuning device 1260 .

[0254] Figure 13 : is a schematic structural diagram of an antenna device provided in an embodiment of the present application. The antenna device 1300 includes a composite left-right-handed + inverted-F type antenna radiator, a feeding point, and a tuning circuit. The first end of the tuning circuit is configured to be connected to the feeding point, and the second end of the tuning circuit is configured to be connected to the composite left-right-handed + inverted-F type antenna radiator. An external capacitor is connected in series between the second end of the tuning circuit and the composite left-right-handed + inverted-F type antenna radiator; the tuning circuit includes N such as Figure 1 The tuning device 100, wherein at least two of the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140 of each tuning device 100 in the N tuning devices 100 are configured to be connected between the first antenna radiator and the feeding point, and N is a positive integer greater than or equal to 1.

[0255] I. Composite left-handed and right-handed + inverted F-type antenna radiator

[0256] A composite right / left hand + inverted-F antenna (CRLH+IFA) antenna radiator is used to receive signals, or to receive and transmit signals.

[0257] J. External capacitor

[0258] The external capacitor acts as a capacitive exciter to excite the antenna, thereby reducing the resonant size of the antenna while keeping the resonant wavelength of the antenna unchanged.

[0259] K. Feeding point

[0260] The feeding point is used to provide a feed source for the first antenna radiator.

[0261] L. Tuning device

[0262] The pins connecting the first antenna radiator and the feed point may be any at least two pins among the first pin 110, the second pin 120, the third pin 130, and the fourth pin 140. Each tuning device 100 is connected to the tuning circuit through at least two of its first pin 110, second pin 120, third pin 130, and fourth pin 140.

[0263] [Example 10]

[0264] like Figure 14 As shown, antenna device 1400 includes a package substrate, on which are disposed a composite left-right-handed + inverted-F antenna radiator 1420, a feed point 1430, a tuning circuit, and a single-pole, multi-throw switch tuning device 1450. Composite left-right-handed + inverted-F antenna radiator 1420 has a first end connected to ground, a second end connected to ground via single-pole, multi-throw switch tuning device 1450, and a third end connected to the feed point 1430 via the tuning circuit.

[0265] The tuning circuit includes a Figure 1 The tuning device 1440 has a first pin 1441 connected to the feed point 1430, and a third pin 1443 and a fourth pin 1444 of the tuning device 1440 are connected to the third end of the composite left-right-handed + inverted-F antenna radiator 1420. A capacitor 1445 is connected in series between the third pin 1443 and the composite left-right-handed + inverted-F antenna radiator 1420, and a capacitor 1446 is connected in series between the fourth pin 1444 and the composite left-right-handed + inverted-F antenna radiator 1420.

[0266] The switch component inside the tuning device 1440 can switch the circuit state connecting the feed point 1430 and the composite left-right hand + inverted F-type antenna radiator 1420. For example, the switch component can switch the feed point 1430 to be connected to the third end of the composite left-right hand + inverted F-type antenna radiator 1420 through the connection path between the first pin 1441 and the third pin 1443, while the connection path between the first pin 1441 and the fourth pin 1444 is disconnected, then the capacitor element 1445 plays a tuning role; the switch component can also switch the feed point 1430 to be connected to the third end of the composite left-right hand + inverted F-type antenna radiator 1420 through the connection path between the first pin 1441 and the fourth pin 1444, while the first pin 144 1 and the third pin 1443 is disconnected, then the capacitor element 1446 plays a tuning role; the switch component can also switch the feeding point 1430 to be connected to the third end of the composite left-right hand + inverted F-type antenna radiator 1420 through the connection path between the first pin 1441 and the third pin 1443, and the feeding point 1430 to be connected to the third end of the composite left-right hand + inverted F-type antenna radiator 1420 through the connection path between the first pin 1441 and the fourth pin 1444, then the capacitor element 1445 and the capacitor element 1446 both play a tuning role.

[0267] The second pin 1442 of the tuning device 1440 may be grounded. The second pin 1442 of the tuning device 1440 may also be connected to the first pin 1441 , the third pin 1443 , and the fourth pin 1444 of the tuning device 1440 . Figure 14 Schematic diagram showing the connection between the second pin 1442 of the tuning device 1440 and the first pin 1441 of the tuning device 1440 .

[0268] [Example 11]

[0269] like Figure 15 As shown, antenna device 1500 includes a package substrate, on which are disposed capacitor 1510, a composite left-handed and right-handed + inverted-F antenna radiator 1520, a feed point 1530, a tuning circuit, and a single-pole, multi-throw switch tuning device 1550. The composite left-handed and right-handed + inverted-F antenna radiator 1520 has a first end connected to ground, a second end connected to ground via the single-pole, multi-throw switch tuning device 1550, and a third end connected to the feed point 1530 via the tuning circuit. Capacitor 1510 is connected in series between the tuning circuit and the single-pole, multi-throw switch tuning device 1550.

[0270] The tuning circuit includes a Figure 1The tuning device 1540 has a first pin 1541 connected to the feed point 1530, and a third pin 1543 and a fourth pin 1544 of the tuning device 1540 are connected to the third end of the composite left-right-handed + inverted-F antenna radiator 1520. A reactive element 1545 is connected in series between the third pin 1543 and the composite left-right-handed + inverted-F antenna radiator 1520, and a reactive element 1546 is connected in series between the fourth pin 1544 and the composite left-right-handed + inverted-F antenna radiator 1520.

[0271] The switch component inside the tuning device 1540 can switch the circuit state connecting the feed point 1530 and the composite left-right hand + inverted F-type antenna radiator 1520. For example, the switch component can switch the feed point 1530 to be connected to the third end of the composite left-right hand + inverted F-type antenna radiator 1520 through the connection path between the first pin 1541 and the third pin 1543, while the connection path between the first pin 1541 and the fourth pin 1544 is disconnected, so that the reactance element 1545 plays a tuning role; the switch component can also switch the feed point 1530 to be connected to the third end of the composite left-right hand + inverted F-type antenna radiator 1520 through the connection path between the first pin 1541 and the fourth pin 1544, while the first pin 154 1 and the third pin 1543 are disconnected, then the reactive element 1546 plays a tuning role; the switch component can also switch the feeding point 1530 to be connected to the third end of the composite left-handed + inverted-F type antenna radiator 1520 through the connection path between the first pin 1541 and the third pin 1543, and the feeding point 1530 to be connected to the third end of the composite left-handed + inverted-F type antenna radiator 1520 through the connection path between the first pin 1541 and the fourth pin 1544, then the reactive element 1545 and the reactive element 1546 both play a tuning role.

[0272] The second pin 1542 of the tuning device 1540 may be grounded. The second pin 1542 of the tuning device 1540 may also be connected to the first pin 1541 , the third pin 1543 , and the fourth pin 1544 of the tuning device 1540 . Figure 15 Schematic diagram showing that the second pin 1542 of the tuning device 1540 is grounded.

[0273] An embodiment of the present application further provides a terminal device, which includes an antenna device.

[0274] Specifically, the antenna device may be at least one of the antenna device 200 , the antenna device 1000 , and the antenna device 1300 .

[0275] Optionally, the terminal device further includes a metal middle frame and a radio frequency circuit, the antenna device is connected to the radio frequency circuit, and the antenna device transmits the signal on the radio frequency circuit through the metal middle frame.

[0276] It should be understood that the metal middle frame of the terminal device includes the metal frame of the terminal device.

[0277] Specifically, the feeding point of the antenna device is connected to the radio frequency circuit. For example, the feeding point in at least one of the above-mentioned antenna devices 200, 1000, and 1300 can be connected to the radio frequency circuit. The antenna device can convert the electrical signal on the radio frequency circuit into a spatial signal and transmit it through the metal middle frame of the terminal device.

[0278] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0279] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0280] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0281] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0282] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0283] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0284] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An antenna device, characterized in that: include: Feed point; an antenna radiator, wherein a first end of the antenna radiator is grounded; a tuning circuit, wherein a first end of the tuning circuit is connected to the feeding point, and a second end of the tuning circuit is connected to the second end of the antenna radiator; The tuning circuit comprises: N tuning devices, each of the N tuning devices comprising: A plurality of pins, the plurality of pins comprising: a first pin, a second pin, a third pin, and a fourth pin; a first reactance element connected between the first pin and a first end of the second pin; a switch assembly, disposed between the third pin and the fourth pin, the switch assembly comprising a first switch assembly and a second switch assembly; a first internal branch and a second internal branch, wherein the first switch component is connected in series to the first internal branch, wherein when the first internal branch is in a connected state, one end of the first internal branch is connected to the third pin; and the second switch component is connected in series to the second internal branch, wherein when the second internal branch is in a connected state, one end of the second internal branch is connected to the fourth pin; The other end of the first internal branch is connected to the other end of the second internal branch to form a first main terminal, and the first main terminal is connected to the first pin. The N tuning devices include a first tuning device, wherein the second end of the second pin of the first tuning device is connected to one of the first pin, the third pin, or the fourth pin of the first tuning device; the fourth pin of the first tuning device is indirectly grounded, and the third pin is connected to the second end of the tuning circuit; when N is 1, the first pin of the first tuning device is connected to the first end of the tuning circuit; or, when N is a positive integer greater than or equal to 2, the first pin of the first tuning device is connected to at least one of the first pin, the second pin, the third pin, and the fourth pin of a tuning device other than the first tuning device among the N tuning devices; The tuning device further comprises: a signal controller configured to control the first switch assembly to switch the first internal branch between a connected state and a disconnected state, and to control the second switch assembly to switch the second internal branch between a connected state and a disconnected state; the signal controller further configured to switch a value of the first reactance element; The antenna device further comprises: A single-pole multi-throw switch tuning device, comprising a single-pole multi-throw switch component, a second reactance element, and a third reactance element; The single-pole multi-throw switch assembly includes a third internal branch, a fourth internal branch, a fifth pin, a sixth pin, and a seventh pin. When the third internal branch is in a connected state, one end of the third internal branch is connected to the sixth pin; when the fourth internal branch is in a connected state, one end of the fourth internal branch is connected to the seventh pin. The other end of the third internal branch and the other end of the fourth internal branch are connected to form a second main terminal, and the second main terminal is connected to the fifth pin; The single-pole multi-throw switch assembly is used to switch the third internal branch between a connected state and a disconnected state, and / or the single-pole multi-throw switch assembly is used to switch the fourth internal branch between a connected state and a disconnected state; The fifth pin is connected to the third end of the antenna radiator; One end of the second reactance element is grounded, and the other end is connected to the sixth pin; One end of the third reactance element is grounded, and the other end is connected to the seventh pin; The third end of the antenna radiator is grounded through the single-pole multi-throw switch tuning device, comprising: The third end of the antenna radiator is grounded through the fifth pin, the third inscribed branch, the sixth pin and the second reactance element; or, The third end of the antenna radiator is grounded through the fifth pin, the fourth inscribed branch, the seventh pin and the third reactance element.

2. The antenna device according to claim 1, wherein The third end is located between the first end and the second end.

3. The antenna device according to claim 2, wherein: The distance between the third end and the first end is smaller than the distance between the third end and the second end.

4. The antenna device according to any one of claims 1 to 3, characterized in that The antenna device further includes a fifth reactance element and a sixth reactance element. The fifth reactance element is connected between the second end of the antenna radiator and the third pin, and the sixth reactance element is connected between the ground end and the fourth pin.

5. The antenna device according to any one of claims 1 to 3, characterized in that The antenna device further includes a capacitor connected between the tuning circuit and the second end of the antenna radiator.

6. The antenna device according to any one of claims 1 to 3, characterized in that The antenna radiator is a composite left-right-hand + inverted-F type antenna radiator.

7. A terminal device comprising the antenna device according to any one of claims 1 to 6.

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