Inductor, oscillator and terminal device

Abstract

The application provides an inductor, an oscillator and a terminal device, and relates to the technical field of inductors. The inductor comprises one main conductive section, at least two first sub-conductive sections and at least one switch; two ends of the main conductive section are respectively connected with one main port; at least two taps are arranged on the main conductive section; one end of the first sub-conductive section is connected with one tap, and the other end of the first sub-conductive section is connected with one tap port; the at least one switch comprises a first switch arranged between the at least two taps, and / or a second switch arranged on any one or more first sub-conductive sections. The inductor provided by the application can solve the problem of fixed inductance value of the existing inductor.

Description

Technical Field

[0001] This application relates to the field of inductor technology, and more particularly to an inductor, an oscillator, and a terminal device. Background Technology

[0002] An inductor is a component that converts electrical energy into magnetic energy and stores it. It is widely used in integrated circuits for applications such as impedance matching and LC resonance. As a key component in voltage-controlled oscillators (VCOs) or digitally controlled oscillators (DCOs) within integrated circuits, the inductance range largely determines the frequency range of the VCO or DCO. With the development of communication technology, communication devices support an increasing number of modes, thus requiring a continuous expansion of the frequency range of VCOs or DCOs.

[0003] In related technologies, in order to meet the requirements of communication devices for a wide frequency range, multiple VCOs or DCOs are usually set in a single chip. However, this results in a large chip area, which cannot meet the space requirements for chip integration. Summary of the Invention

[0004] This application provides an inductor, an oscillator, and a terminal device to solve the problem of fixed inductance values ​​in existing inductors.

[0005] In a first aspect, this application provides an inductor comprising: a main conductive segment, at least two first branch conductive segments, and at least one switch; wherein the main conductive segment forms a non-closed loop, and both ends of the main conductive segment are respectively connected to a main port; at least two taps are provided on the main conductive segment; one end of each of the first branch conductive segments is connected to one of the taps, and the other end of the first branch conductive segment is connected to a tap port; the at least two first branch conductive segments and the at least one switch are all located inside the non-closed loop; the at least one switch includes a first switch disposed between the at least two taps, and / or a second switch disposed on any one or more of the first branch conductive segments.

[0006] The inductor provided in this application embodiment sets a main conductive segment between two main ports, and sets a first branch conductive segment between the tap port and the tap on the main conductive segment inside the non-closed loop formed by the main conductive segment. At the same time, a switch is set between the taps on the main conductive segment and / or on the first conductive segment. By controlling the on and off of the switch, the inductance value between any two ports (including the main port and the tap port) of the multiple ports in the inductor can be switched. Thus, the requirements of communication devices for a large frequency range are met without increasing the chip area.

[0007] In one possible implementation, the at least two first conductive segments include two first conductive segments, each of which is connected to a different tap port.

[0008] In one possible implementation, the first switch is disposed on a second conductive segment connecting the two taps; the two first conductive segments are respectively connected to the two taps connected to the second conductive segment.

[0009] In one possible implementation, the first switch is disposed on a second conductive segment connecting the two taps; the two first conductive segments and the second conductive segment are connected to different taps.

[0010] In one possible implementation, the at least two first conductive segments include four first conductive segments; the four first conductive segments are divided into a first group and a second group; wherein, the two first conductive segments belonging to the first group are connected to a tap port, and the two first conductive segments belonging to the second group are connected to another tap port.

[0011] In one possible implementation, the two first conductive segments belonging to the first group are connected to a tap port through a shared conductive segment; the two first conductive segments belonging to the second group are connected to another tap port through a shared conductive segment.

[0012] In one possible implementation, the four first conductive segments are connected to different taps; the first switch is disposed on the second conductive segment connecting two of the taps; a first conductive segment belonging to the first group and the second conductive segment are connected to the same tap through a shared conductive segment, and a first conductive segment belonging to the second group and the second conductive segment are connected to another tap through a shared conductive segment.

[0013] In one possible implementation, switches are respectively provided on the two first conductive segments belonging to the first group and the two first conductive segments belonging to the second group.

[0014] In one possible implementation, switches are respectively provided on a first sub-conducting segment belonging to the first group and a first sub-conducting segment belonging to the second group.

[0015] In one possible implementation, the two taps connected to the first switch are respectively connected to different first conductive segments; or, the two taps connected to the first switch and the taps connected to the at least two first conductive segments are different.

[0016] In one possible implementation, the first switch is directly connected to the two taps; or, the first switch is located on a second conductive segment connecting the two taps.

[0017] In one possible implementation, the non-closed loop is shaped like an "8".

[0018] In one possible implementation, the inductor further includes a package layer and an inductance adjustment element located on the package layer and connected to a ground terminal; the inductance adjustment element is a closed coil or a metal shielding pattern.

[0019] In one possible implementation, the closed coil is any one of a circle, an ellipse, a quadrilateral, a hexagon, or an octagon.

[0020] In one possible implementation, the metal shielding pattern is a planar metal pattern or a metal mesh pattern.

[0021] In one possible implementation, the inductor has an axisymmetric structure.

[0022] In one possible implementation, the at least two first conductive segments comprise two first conductive segments that are symmetrical about the axis of symmetry of the inductor.

[0023] In one possible implementation, the two first conductive segments belonging to the first group and the two first conductive segments belonging to the second group are symmetrical about the axis of symmetry of the inductor.

[0024] Secondly, this application also provides an inductor, comprising: two inductor circuits; wherein, the first inductor circuit includes a main conductive segment, at least one first sub-conductive segment, and at least one switch, the first inductor circuit being any one of the two inductor circuits; both ends of the main conductive segment are respectively connected to a main port; at least two taps are provided on the main conductive segment; one end of the first sub-conductive segment is connected to one of the taps, and the other end of the first sub-conductive segment is connected to a tap port; the main conductive segment and at least one first sub-conductive segment form a non-closed loop; a second sub-conductive segment is connected between at least two of the taps; the at least one switch includes a first switch disposed on the second sub-conductive segment, and / or a second switch disposed on any one or more of the first sub-conductive segments; the at least one switch and the second sub-conductive segment are located inside the non-closed loop.

[0025] The inductor provided in this application embodiment uses two inductor circuits. In each inductor circuit, a main conductive segment is set between two main ports, a first sub-conductive segment is set between the tap port and the tap on the main conductive segment, and a second sub-conductive segment is set between the two taps inside the non-closed loop formed by the main conductive segment and the first sub-conductive segment. A switch is set on the first sub-conductive segment and / or the second sub-conductive segment. By controlling the on / off state of the switch, the inductance value between any two ports (including the main port and the tap port) in the inductor circuit can be switched. Thus, the requirements of communication devices for a wide frequency range can be met without increasing the chip area.

[0026] In one possible implementation, the two inductor circuits are axially symmetrical.

[0027] In one possible implementation, the at least one first conductive segment includes one first conductive segment; or, the at least one first conductive segment includes two first conductive segments, the two first conductive segments being connected to different tap ports respectively; or, the at least one first conductive segment includes four first conductive segments, the four first conductive segments being divided into a first group and a second group, wherein the two first conductive segments belonging to the first group are connected to one tap port, and the two first conductive segments belonging to the second group are connected to another tap port.

[0028] In one possible implementation, the two taps connected to the first switch are respectively connected to different first conductive segments; or, the two taps connected to the first switch and the tap connected to the at least one first conductive segment are different.

[0029] In one possible implementation, the at least one first conductive segment includes two first conductive segments; the two first conductive segments are connected to the same tap port through a shared conductive segment; one of the two first conductive segments is connected to the same tap as the second conductive segment through a shared conductive segment.

[0030] In one possible implementation, the at least one first conductive segment includes two first conductive segments; the two first conductive segments are respectively connected to different taps and tap ports; the two main ports are a first main port and a second main port; one tap connected to a first conductive segment is close to the first main port, and the tap port connected to the first conductive segment is close to the second main port; the other tap connected to a first conductive segment is close to the second main port, and the tap port connected to the first conductive segment is close to the first main port.

[0031] In one possible implementation, the at least one first conductive segment includes four first conductive segments, which are divided into a first group and a second group; wherein two first conductive segments belonging to the first group are connected to the same tap port through a shared conductive section; two first conductive segments belonging to the second group are connected to the same tap port through a shared conductive section; one first conductive segment belonging to the first group and the second conductive segment are connected to the same tap through a shared conductive section; and one first conductive segment belonging to the second group and the second conductive segment are connected to another tap through a shared conductive section; the four first conductive segments are connected to different taps.

[0032] In one possible implementation, the non-closed loops in the two inductor circuits are shaped like the number "8".

[0033] In one possible implementation, the inductor further includes a package layer and an inductance adjustment element located on the package layer and connected to a ground terminal; the inductance adjustment element is a closed coil or a metal shielding pattern.

[0034] In one possible implementation, the closed coil is any one of a circle, an ellipse, a quadrilateral, a hexagon, or an octagon.

[0035] In one possible implementation, the metal shielding pattern is a planar metal pattern or a metal mesh pattern.

[0036] Thirdly, embodiments of this application provide an oscillator, including a control circuit and at least one inductor as described in either the first or second aspect; the main port and tap port of the inductor are respectively connected to the control circuit.

[0037] Fourthly, embodiments of this application provide a terminal device including at least one oscillator as described in any possible implementation of the third aspect. Attached Figure Description

[0038] Figure 1a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0039] Figure 1b for Figure 1a A schematic diagram of the equivalent circuit of an inductor;

[0040] Figure 2 This is a schematic diagram of an inductor provided in an embodiment of this application;

[0041] Figure 3a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0042] Figure 3b for Figure 3a A schematic diagram of the equivalent circuit of an inductor;

[0043] Figure 4a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0044] Figure 4b for Figure 4a A schematic diagram of the equivalent circuit of an inductor;

[0045] Figure 5a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0046] Figure 5b for Figure 5a A schematic diagram of the equivalent circuit of an inductor;

[0047] Figure 6a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0048] Figure 6b for Figure 6a A schematic diagram of the equivalent circuit of an inductor;

[0049] Figure 7 This is a schematic diagram of an inductor provided in an embodiment of this application;

[0050] Figure 8 This is a schematic diagram of an inductor provided in an embodiment of this application;

[0051] Figure 9a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0052] Figure 9b for Figure 9a A schematic diagram of the equivalent circuit of an inductor;

[0053] Figure 10a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0054] Figure 10b for Figure 10a A schematic diagram of the equivalent circuit of an inductor;

[0055] Figure 11a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0056] Figure 11b for Figure 11a A schematic diagram of the equivalent circuit of an inductor;

[0057] Figure 12a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0058] Figure 12b for Figure 12a A schematic diagram of the equivalent circuit of an inductor;

[0059] Figure 13a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0060] Figure 13b for Figure 13a A schematic diagram of the equivalent circuit of an inductor;

[0061] Figure 14a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0062] Figure 14b for Figure 14a A schematic diagram of the equivalent circuit of an inductor;

[0063] Figure 15a This is a schematic diagram of an inductor provided in an embodiment of this application;

[0064] Figure 15b for Figure 15a A schematic diagram of the equivalent circuit of an inductor;

[0065] Figure 16 This is a schematic diagram of an inductor provided in an embodiment of this application;

[0066] Figure 17 This is a schematic diagram of the structure of an inductor provided in an embodiment of this application;

[0067] Figure 18 This is a schematic diagram of the structure of an inductor provided in an embodiment of this application;

[0068] Figure 19 This is a schematic diagram of a metal shielding pattern provided in an embodiment of this application. Detailed Implementation

[0069] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by those skilled in the art. The terms "first," "second," and similar words used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments in this application, unless otherwise stated, "a plurality of" means two or more. Directional terms such as "left," "right," "up," and "down" are defined relative to the indicated placement of the switchable inductor in the drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and may change accordingly depending on the placement of the switchable inductor.

[0070] The embodiments of this application are described below with reference to the accompanying drawings. In the following description, reference is made to the accompanying drawings, which form part of this application and illustrate specific aspects of the embodiments of this application or to the applications in which specific aspects of the embodiments of this application may be used. It should be understood that the embodiments of this application may be used in other aspects and may include structural or logical variations not depicted in the drawings. Therefore, the following detailed description should not be construed in a limiting sense, and the scope of this application is defined by the appended claims. Furthermore, it should be understood that, unless explicitly stated otherwise, features of the various exemplary embodiments and / or aspects described herein can be combined with each other.

[0071] This application provides a terminal device, which can be an electronic product such as a mobile phone, tablet computer, laptop, in-vehicle computer, smartwatch, or smart bracelet. This application does not impose any special restrictions on the specific form of the terminal device.

[0072] The aforementioned terminal device includes an oscillator, which includes a control circuit and an inductor connected to the control circuit, wherein the control circuit is connected to a port in the inductor.

[0073] The oscillator in the embodiments of this application can be a voltage-controlled oscillator (VCO) or a digitally controlled oscillator (DCO), and this application does not impose any specific limitations on it.

[0074] The inductor in the oscillator of this application can switch between various inductance values, thereby meeting the requirement of the oscillator (VCO or DCO) to cover a wide frequency range. The following embodiments further illustrate the inductor in this application.

[0075] This application provides an inductor, as shown in the embodiment of the application. Figure 1a As shown, the inductor 01 includes a main conductive segment L1, at least two first sub-conductive segments (such as L2 and L3) and at least one switch (such as S1).

[0076] In this inductor 01, the main conductive segment L1 forms a non-closed loop. In some possible implementations, to ensure good anti-interference capability of the inductor, the main conductive segment L1 can be configured as an axisymmetric structure; in this case, the main conductive segment L1 can be bent from the middle position to form an axisymmetric non-closed loop, for example... Figure 1a The diagram shows a non-closed loop symmetrical about the axis of symmetry DD'. The following embodiments are all illustrated using inductor 01 as an example of an axisymmetric structure.

[0077] The aforementioned at least two first conductive segments (such as L2 and L3) and at least one switch (such as S1) are all disposed inside the non-closed loop to ensure that the inductor 01 has a small area (or, in other words, the chip in which the inductor 01 is disposed has a small area). This application does not limit the specific shape of the non-closed loop formed by the main conductive segment L1.

[0078] like Figure 1a As shown, one end of the main conductive segment L1 is connected to the first main port P1, and the other end is connected to the second main port P2; and at least two taps (such as a1 and a2) are provided on the main conductive segment L1; one end of the first sub-conductive segment (L2 and L3) is connected to a tap, and the other end of the first sub-conductive segment (L2 and L3) is connected to a tap port (such as T1 and T2).

[0079] Based on this, at least one switch disposed in the inductor 01 includes: a switch disposed between at least two taps (such as a1, a2), and / or a switch disposed on any one or more first conductive segments. It should be understood here that the number of switches disposed is not specifically limited in this application, and can be selected according to the number of taps, the number of first conductive segments, and actual needs.

[0080] It should be noted that the term "and / or" in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0081] For example, regarding at least one switch in the aforementioned inductor 01, including: a switch disposed between at least two taps (such as a1, a2), and / or a switch disposed on any one or more first conductive segments, it can be understood that the switches in the inductor 01 may only include switches disposed between at least two taps (such as a1, a2); or may only include switches disposed on any one or more first conductive segments (such as L2, L3); or may simultaneously include switches disposed between at least two taps (such as a1, a2) and switches disposed on any one or more first conductive segments (such as L2, L3).

[0082] In summary, the inductor provided in this application embodiment, by setting a main conductive segment between two main ports and setting a first branch conductive segment between the tap port and the tap inside the non-closed loop formed by the main conductive segment, and setting a switch between the taps on the main conductive segment and / or on the first conductive segment, can realize the switching of inductance value between any two ports (including main ports and tap ports) of multiple ports in the inductor simply by controlling the on and off of the switch. Thus, the requirements of communication devices for a large frequency range are met without increasing the chip area.

[0083] The inductor 01 of this application will be further described below through specific embodiments.

[0084] Example 1

[0085] Figure 1a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 1b for Figure 1a The equivalent circuit diagram is shown below. (Reference) Figure 1a and Figure 1b As shown, in the inductor 01 provided in this embodiment, the main conductive segment L1 is bent from the middle position to form an axisymmetric non-closed loop. One end of the main conductive segment L1 is connected to the first main port P1, and the other end is connected to the second main port P2. Indicatively, the main conductive segment L1 can be a high-layer wide metal trace.

[0086] The inductor 01 also includes two first conductive segments L2 and L3, which are symmetrically arranged about the axis of symmetry DD' of the non-closed loop. One end of the first conductive segment L2 is connected to tap a1, and the other end is connected to tap port T1. One end of the first conductive segment L3 is connected to tap a2, and the other end is connected to tap port T2. Schematic, tap ports T1 and T2 can be distributed side-by-side with the first main port P1 and the second main port P2 along the direction perpendicular to the axis of symmetry DD'.

[0087] Additionally, the inductor 01 may also include a second conductive segment disposed between taps a1 and a2, and a switch s1 is disposed on the second conductive segment; that is, the second conductive segment includes two conductive segments L41 and L42, wherein conductive segment L41 is connected to tap a1, conductive segment L42 is connected to tap a2, and the two conductive segments L41 and L42 are connected by switch s1. Schematic, conductive segments L41 and L42 may be symmetrically arranged about the axis of symmetry DD'.

[0088] In some possible implementations, no switch may be provided on the second conductive segment, that is, taps a1 and a2 are directly connected through the complete second conductive segment; in this case, switches may be provided on the first conductive segment L2 and the first conductive segment L3 respectively to achieve switching of the inductance value of the inductor; schematically, the switches on the first conductive segment L2 and the switches on the first conductive segment L3 may be symmetrically arranged about the axis of symmetry DD'.

[0089] In this embodiment, by using the inductor 01 provided in this embodiment, the switching of inductance values ​​between any two ports among the first main port P1, the second main port P2, and the two tap ports T1 and T2 can be achieved by controlling the on and off state of the switch s1.

[0090] As illustrated, when control switch s1 is open (i.e., a weak connection is made between conductive segments L41 and L42, with a conduction impedance greater than 100 ohms), there is an inductance value between any two ports among the first main port P1, the second main port P2, and the two tap ports T1 and T2; when control switch s1 is closed (i.e., a strong connection is made between conductive segments L41 and L42, with a conduction impedance less than 5 ohms), conductive segments L41 and L42 are coupled to the main conductive segment L1, switching the inductance value between any two ports among the first main port P1, the second main port P2, and the two tap ports T1 and T2. In other words, there are at least two different inductance values ​​between any two ports of the inductor 01 provided in this embodiment, so that when the inductor 01 is applied to a VCO or DCO, it can meet the coverage of a large frequency range.

[0091] Example 2

[0092] Figure 2 This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Compared to Embodiment 1, where the first conductive segment L2 and conductive segment L41 are connected to the same tap a1, and the first conductive segment L3 and conductive segment L42 are connected to the same tap a2, referring to... Figure 2As shown, the difference between the inductor 01 in this embodiment and the inductor 01 in Embodiment 1 is that the first conductive segment L2 and conductive segment L41 are connected to different taps, and the first conductive segment L3 and conductive segment L42 are connected to different taps. For example... Figure 2 As shown, the second sub-conductive segments (L41, L42) are connected between taps a1 and a2, the first sub-conductive segment L2 is connected to the third main tap a3 on the main conductive segment L1, and the first sub-conductive segment L3 is connected to the fourth main tap a4 on the main conductive segment L1.

[0093] In this embodiment, by controlling the on / off state of switch s1, the inductance value between any two ports among the first main port P1, the second main port P2, and the two tap ports T1 and T2 can be switched, so that when the inductor 01 is applied to a VCO or DCO, it can meet the coverage of a large frequency range.

[0094] Example 3

[0095] Figure 3a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 3b for Figure 3a The equivalent circuit diagram is shown below. (Reference) Figure 3a and Figure 3b As shown, the difference between the inductor 01 provided in this embodiment and the inductor 01 in Embodiment 2 is that, in addition to including the first conductive segment L2 and the first conductive segment L3, the inductor 01 also includes the first conductive segment L21 and the first conductive segment L31; that is, the inductor 01 includes four first conductive segments L2, L3, L21, and L31.

[0096] The first conductive segment L21 and the first conductive segment L31 are symmetrically arranged about the axis of symmetry DD', and one end of the first conductive segment L21 is connected to tap a1 and the other end is connected to tap port T1; one end of the first conductive segment L31 is connected to tap a2 and the other end is connected to tap port T2.

[0097] Figure 3a This is merely an illustrative example, using the following scenarios: the first conductive segment L21 and conductive segment L41 are connected to the same tap a1; the first conductive segment L31 and conductive segment L42 are connected to the same tap a2; the first conductive segment L21 and the first conductive segment L2 are connected to the same tap port T1; and the first conductive segment L31 and the first conductive segment L3 are connected to the same tap port T2.

[0098] In the case where the first conductive segment L21 and conductive segment L41 are connected to the same tap a1, and the first conductive segment L31 and conductive segment L42 are connected to the same tap a2:

[0099] In some possible ways of implementation, such as Figure 3aAs shown, the first conductive segment L21 can be directly connected to the conductive segment L41, that is, the first conductive segment L21 and the conductive segment L41 are connected to tap a1 through a shared conductive segment; the first conductive segment L31 can be directly connected to the conductive segment L42, that is, the first conductive segment L31 and the conductive segment L42 are connected to tap a2 through a shared conductive segment.

[0100] In some possible implementations, the first conductive segment L21 and conductive segment L41 can be independently connected to tap a1, and the first conductive segment L31 and conductive segment L42 can be independently connected to tap a2.

[0101] Of course, in some other possible implementations, refer to Figure 7 or Figure 8 The first conductive segment L21 and conductive segment L41 can be connected to different taps respectively, and the first conductive segment L31 and conductive segment L42 can be connected to different taps respectively.

[0102] When the first conductive segment L21 and the first conductive segment L2 are connected to the same tap port T1, and the first conductive segment L31 and the first conductive segment L3 are connected to the same tap port T2:

[0103] In some possible ways of implementation, such as Figure 3a As shown, the first conductive segment L21 can be directly connected to the first conductive segment L2, that is, the first conductive segment L21 and the first conductive segment L2 are connected to the tap port T1 through a shared conductive segment; the first conductive segment L31 can be directly connected to the first conductive segment L3, that is, the first conductive segment L31 and the first conductive segment L3 are connected to the tap port T2 through a shared conductive segment.

[0104] In some possible implementations, the first sub-conducting segment L21 and the first sub-conducting segment L2 can be independently connected to the same tap port T1, and the first sub-conducting segment L31 and the first sub-conducting segment L3 can be independently connected to the same tap port T2.

[0105] Of course, in some other possible implementations, the first conductive segment L21 and the first conductive segment L2 can be connected to different tap ports, and the first conductive segment L31 and the first conductive segment L3 can be connected to different tap ports; in this case, the inductor 01 is provided with four tap ports.

[0106] In this embodiment, by controlling the on / off state of switch s1, the switching of multiple inductance values ​​between any two ports among the first main port P1, the second main port P2, and the two tap ports T1 and T2 can be realized, so that when the inductor 01 is applied to a VCO or DCO, it can meet the coverage of a large frequency range.

[0107] Example 4

[0108] Figure 4a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 4b for Figure 4a The equivalent circuit diagram is shown below. (Reference) Figure 4a and Figure 4b As shown, the difference between the inductor 01 provided in this embodiment and the inductor 01 in Embodiment 3 is that a switch s21 is provided on the first conductive segment L21, and a switch s31 is provided on the first conductive segment L31. Indicatively, switches s21 and s31 can be symmetrically arranged about the axis of symmetry DD'.

[0109] In this embodiment, by controlling the on / off states of switches s1, s21, and s31, the switching of multiple inductance values ​​between any two ports among the first main port P1, the second main port P2, and the two tap ports T1 and T2 can be achieved, thereby enabling the inductor 01 to meet the coverage of a large frequency range when applied to a VCO or DCO.

[0110] It should be noted that, in order to ensure the anti-interference capability of inductor 01, the two switches (e.g., switches s21 and s31) symmetrically arranged about the axis of symmetry DD' in inductor 01 can be controlled to be simultaneously turned on or simultaneously turned off. Illustrated, it is possible to control s1 to be on and switches s21 and s31 to be off, or to control switches s21 and s31 to be on and s1 to be off, or to control s1 to be on and switches s21 and s31 to be on.

[0111] Example 5

[0112] Figure 5a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 5b for Figure 5a The equivalent circuit diagram is shown below. (Reference) Figure 5a and Figure 5b As shown, the difference between the inductor 01 provided in this embodiment and the inductor 01 in Embodiment 3 is that a switch s2 is provided on the first conductive segment L2, and a switch s3 is provided on the first conductive segment L3. Indicatively, switches s2 and s3 can be symmetrically arranged about the axis of symmetry DD'.

[0113] In this embodiment, by controlling the on / off states of switches s1, s2, and s3; illustratively, s1 can be turned on while switches s21 and s31 are turned off, or switches s21 and s31 can be turned on while s1 is turned off, or s1 can be turned on while switches s21 and s31 are turned on; thus, switching between multiple inductance values ​​between any two ports among the first main port P1, the second main port P2, and the two tap ports T1 and T2 can be achieved, thereby enabling the inductor 01 to meet the coverage range of a large frequency range when applied to a VCO or DCO.

[0114] Example 6

[0115] Figure 6a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 6b for Figure 6a The equivalent circuit diagram is shown below. (Reference) Figure 6a and Figure 6b As shown, the difference between the inductor 01 provided in this embodiment and the inductor 01 in Embodiment 3 is that a switch s2 is provided on the first conductive segment L2, and a switch s3 is provided on the first conductive segment L3; simultaneously, a switch s21 is provided on the first conductive segment L21, and a switch s31 is provided on the first conductive segment L31. Indicatively, switches s2 and s3 can be symmetrically arranged about the axis of symmetry DD', and switches s21 and s31 can be symmetrically arranged about the axis of symmetry DD'.

[0116] In this embodiment, by controlling the on / off states of switches s1, s2, s3, s21, and s31; illustratively, the following can be achieved: switch s1 can be turned on, switches s2 and s3 can be turned on, and switches s21 and s31 can be turned off; or switch s1 can be turned on, switches s2 and s3 can be turned off, and switches s21 and s31 can be turned on; or switch s1 can be turned off, switches s2 and s3 can be turned on, and switches s21 and s31 can be turned on, etc., thereby enabling the switching of multiple inductance values ​​between any two ports among the first main port P1, the second main port P2, and the two tap ports T1 and T2. This allows the inductor 01 to meet the coverage range of a large frequency range when applied to a VCO or DCO.

[0117] Based on this, in order to minimize the impact of inductor 01 on other circuit components when applied to the oscillator, in some embodiments, the shape of the non-closed loop formed by the main conductive segment L1 in the aforementioned embodiments (including embodiments one, two, three, four, five, and six) can be set to an "8" shape. In this way, the magnetic fields generated at both ends of the inductor 01 in this "8"-shaped structure can cancel each other out, thereby avoiding significant impact on other circuit components, and also preventing other circuit components from significantly impacting inductor 01.

[0118] Of course, it should be noted that the figure-eight shape mentioned in this application is only similar in shape to the figure "8". The figure-eight shape in this application is formed by a non-closed loop. That is to say, the figure-eight shape in this application is a non-closed loop structure, not a closed structure formed by the figure "8" itself; or, at least one of the two rings (upper ring and lower ring) in the figure-eight shape in this application is non-closed.

[0119] As illustrated, taking inductor 01 in Embodiment 4 as an example, such as Figure 7 or Figure 8 As shown, the shape of the non-closed loop formed by the main conductive segment L1 in inductor 01 can be set to an "8" shape. There are no specific restrictions on the setting of other conductive segments (including the first sub-conductive segment and the second sub-conductive segment) and switches in inductor 01. In practice, they can be set as needed.

[0120] For example, such as Figure 7 As shown, the second conductive segment (i.e., conductive segment L41 and conductive segment L42) and the switch s1 located on the second conductive segment can be set in the upper ring of the figure-eight structure, and the first conductive segments L2, L3, L21, L31 and the switches s2, s3, s21, s31 located on the first conductive segments L2, L3, L21, L31 can be set in the lower ring of the figure-eight structure.

[0121] For example, such as Figure 8 As shown, the second conductive segment (i.e., conductive segment L41 and conductive segment L42) and the switch s1 located on the second conductive segment, the first conductive segments L2, L3, L21, L31 and the switches s2, s3, s21, s31 located on the first conductive segments L2, L3, L21, L31 are all located in the lower ring of the figure-eight structure.

[0122] In addition, compared to Figure 7 and Figure 8 In the inductor 01 with an "8"-shaped structure, in addition to setting a second sub-conductive segment (i.e., conductive segment L41 and conductive segment L42) between the two taps and setting a switch s1 on the second sub-conductive segment, in another possible implementation, a switch can be set directly between the two taps without using a second sub-conductive segment.

[0123] Indicative, such as Figure 9a and Figure 9b (for Figure 9aAs shown in the equivalent circuit diagram, taps can be set in the adjacent areas of the upper and lower rings in the left half of the figure-eight structure, and the two taps can be directly connected by switch S1-1; in the right half of the figure-eight structure, taps can be set in the adjacent areas of the upper and lower rings, and the two taps can be directly connected by switch S1-2. Of course, in this case, the specific settings for the first conductive segment and the switches set on the first conductive segment are not limited; they can be set as needed in practice. For example, you can refer to... Figure 7 and Figure 8 The relevant settings in [the system / platform].

[0124] This application embodiment also provides an inductor 01, referenced... Figure 10a As shown, the inductor 01 includes two inductor circuits 10-1 and 10-2. In some possible implementations, to ensure good anti-interference capability, the inductor 01 can be configured as an axisymmetric structure. In this case, the distribution of the two inductor circuits 10-1 and 10-2 is axisymmetric (or the two inductor circuits 10-1 and 10-2 are symmetrically distributed about axisymmetric DD'), and the structures (including circuits and layouts) of the two inductor circuits 10-1 and 10-2 are completely identical. The following embodiments all use the axisymmetric distribution of the two inductor circuits 10-1 and 10-2, and take any one of the two inductor circuits 10-1 and 10-2 (e.g., inductor circuit 10-1) as an example to further illustrate the inductor circuit in this application.

[0125] like Figure 10a As shown, the inductor circuit 10-1 includes a main conductive segment L1, at least one first sub-conductive segment (such as L2), and at least one switch (such as S1). The main conductive segment L1 and the at least one first sub-conductive segment (L2) form a non-closed loop. This application does not limit the specific shape of the non-closed loop formed by the main conductive segment L1 and the at least one first sub-conductive segment (L2).

[0126] One end of the main conductive segment L1 is connected to the first main port P1, and the other end is connected to the second main port P2. At least two taps (e.g., a1, a2, a3) are provided on the main conductive segment L1. One end of the first sub-conductive segment (L2) is connected to a tap, and the other end of the first sub-conductive segment (L2) is connected to a tap port (e.g., T1). A second sub-conductive segment (e.g., L41, L42) is connected between the at least two taps (e.g., a1, a2). The second sub-conductive segment (e.g., L41, L42) and at least one switch (e.g., s1) are all located inside this non-closed loop to ensure that the inductor 01 has a small area (or, in other words, the chip containing the inductor 01 has a small area).

[0127] Based on this, at least one switch disposed in the inductor circuit 10-1 includes: a switch disposed on the second conductive segment, and / or, a switch disposed on any one or more first conductive segments. It should be understood that the number of switches disposed in this application is not specifically limited and can be selected according to the number of taps, the number of first conductive segments, and actual needs.

[0128] For example, for at least one switch disposed in the inductor circuit 10-1, including: a switch disposed on the second sub-conducting segment, and / or, a switch disposed on any one or more first sub-conducting segments: it can be understood that the switches in the inductor circuit 10-1 may include only the switch disposed on the second sub-conducting segment; or only the switch disposed on any one or more first sub-conducting segments; or simultaneously include the switch disposed on the second sub-conducting segment and the switch disposed on any one or more first sub-conducting segments.

[0129] In summary, the inductor provided in this application embodiment, by setting two inductor circuits, in each inductor circuit, sets a main conductive segment between two main ports, sets a first sub-conductive segment between the tap port and the tap on the main conductive segment, and sets a second sub-conductive segment between two taps inside the non-closed loop formed by the main conductive segment and the first sub-conductive segment. At the same time, a switch is set on the first sub-conductive segment and / or the second sub-conductive segment. By controlling the on and off of the switch, the inductance value between any two ports (including the main port and the tap port) in the multiple ports of the inductor circuit can be switched, thereby meeting the requirements of communication devices for a large frequency range without increasing the chip area.

[0130] The inductor circuit 10-1 described above will be further explained below through specific embodiments.

[0131] Example 7

[0132] Figure 10a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 10b for Figure 10a The equivalent circuit diagram is shown below. (Reference) Figure 10a and Figure 10b As shown, in the inductor circuit 10-1 of the inductor 01 in this embodiment, one end of the main conductive segment L1 is connected to the first main port P1, and the other end is connected to the second main port P2.

[0133] In the inductor circuit 10-1, a first sub-conducting segment L2 is provided, and the main conductive segment L1 is bent from the middle to form a raised structure. One end of the first sub-conducting segment L2 is connected to tap a3 near the second main port P2, and the other end of the first sub-conducting segment L2 is connected to tap port T1 near the first main port P1. The main conductive segment L1 and the first sub-conducting segment L2 form a non-closed loop. Schematic, tap port T1 and the first main port P1 can be distributed side by side along the direction of the vertical axis of symmetry DD'.

[0134] In addition, such as Figure 10a As shown, the main conductive segment L1 has taps a1 and a2 in the protruding part. Tap a1 is closer to the first main port P1 than tap a2. The inductor circuit 10-1 also includes a second sub-conductive segment between taps a1 and a2. The second sub-conductive segment includes two conductive segments L41 and L42. Conductive segment L41 is connected to tap a1, and conductive segment L42 is connected to tap a2. The two conductive segments L41 and L42 are connected by switch s1.

[0135] In some possible implementations, a switch may not be provided on the second conductive segment, that is, taps a1 and a2 are directly connected through the complete second conductive segment; in this case, a switch may be provided on the first conductive segment L2 to achieve switching of the inductance value of the inductor circuit.

[0136] In the inductor circuit 10-1 provided in this embodiment, the inductance value between any two ports among the first main port P1, the second main port P2, and the tap port T1 in the inductor circuit 10-1 can be switched by controlling the on and off of the switch s1; similarly, the inductor circuit 10-2 is also used.

[0137] As illustrated, when control switch s1 is open (i.e., a weak connection is made between conductive segments L41 and L42, with a conduction impedance greater than 100 ohms), any two ports among the first main port P1, the second main port P2, and the tap port T1 have an inductance value; when control switch s1 is closed (i.e., a strong connection is made between conductive segments L41 and L42, with a conduction impedance less than 5 ohms), conductive segments L41 and L42 are coupled to the main conductive segment L1, and any two ports among the first main port P1, the second main port P2, and the tap port T1 switch to another inductance value; that is, any two ports of the inductor 01 provided in this embodiment have at least two different inductance values, thus enabling the inductor 01 to meet a wide frequency coverage range when applied to a VCO or DCO.

[0138] It should be noted that in the actual control process, the two switches in inductor circuit 10-1 and inductor circuit 10-2 that are symmetrically set about axisymmetric DD' can be controlled to be turned on or off at the same time to ensure the anti-interference capability of inductor 01.

[0139] Example 8

[0140] Figure 11a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 11b for Figure 11a The equivalent circuit diagram. Compared to the embodiment seven, which includes a first conductive segment L2 connected between tap a3 and tap port T1, as shown... Figure 11a As shown, the inductor 01 provided in this embodiment, in addition to the first conductive segment L2, also has another first conductive segment L3 connected between tap a2 and tap port T1; that is, this embodiment has two first conductive segments L2 and L3.

[0141] like Figure 11a As shown, a switch s3 can be installed on the first conductive segment L3. Alternatively, no switch can be installed on the first conductive segment L3, meaning that tap a2 and tap port T1 are connected through the complete first conductive segment L3.

[0142] In the case where the first conductive segment L3 and conductive segment L42 are connected to the same tap a2:

[0143] In some possible ways of implementation, such as Figure 11a As shown, the first conductive segment L3 can be directly connected to the conductive segment L42, that is, the first conductive segment L3 and the conductive segment L42 are connected to the tap a2 through a shared conductive segment.

[0144] In some possible implementations, the first conductive segment L3 and conductive segment L42 can be set to be independently connected to the same tap a1.

[0145] Of course, in some other possible implementations, the first conductive segment L3 and conductive segment L42 can be connected to different taps respectively.

[0146] When the first conductive segment L3 and the first conductive segment L2 are connected to the same tap port T1:

[0147] In some possible ways of implementation, such as Figure 11a As shown, the first conductive segment L3 can be directly connected to the first conductive segment L2, that is, the first conductive segment L3 and the first conductive segment L2 are connected to the tap port T1 through a shared conductive segment.

[0148] In some possible implementations, the first conductive segment L3 and the first conductive segment L2 can be independently connected to the same tap port T1.

[0149] Of course, in some other possible implementations, the first conductive segment L3 and the first conductive segment L2 can be connected to different tap ports respectively; in this case, the inductor circuit 10-1 is provided with two tap ports.

[0150] In the inductor circuit 10-1 provided in this embodiment, the inductance value between any two ports among the first main port P1, the second main port P2, and the tap port T1 in the inductor circuit 10-1 can be switched by controlling the on and off of switches s1 and s3; similarly, the inductor circuit 10-2 is used.

[0151] Example 9

[0152] Figure 12a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 12b for Figure 12a The equivalent circuit diagram is shown below. (Reference) Figure 12a and Figure 12b As shown, the difference between the inductor circuit 10-1 in the inductor 01 provided in this embodiment and the inductor circuit 10-1 in embodiment eight is that a switch s2 is provided on the first sub-conducting segment L2, while no switch is provided on the first sub-conducting segment L3.

[0153] In the inductor circuit 10-1 provided in this embodiment, the inductance value between any two ports among the first main port P1, the second main port P2, and the tap port T1 in the inductor circuit 10-1 can be switched by controlling the on and off of switches s1 and s2; similarly, the inductor circuit 10-2 is used.

[0154] Example 10

[0155] Figure 13a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 13b for Figure 13a The equivalent circuit diagram is shown below. (Reference) Figure 13a and Figure 13b As shown, the difference between the inductor circuit 10-1 in the inductor 01 provided in this embodiment and the inductor circuit 10-1 in embodiment nine is that, while a switch s2 is provided on the first sub-conducting segment L2, a switch s3 is also provided on the first sub-conducting segment L3.

[0156] In the inductor circuit 10-1 provided in this embodiment, the inductance value between any two ports among the first main port P1, the second main port P2, and the tap port T1 in the inductor circuit 10-1 can be switched by controlling the on and off of switches s1, s2, and s3; similarly, the inductor circuit 10-2 is used.

[0157] Example 11

[0158] Figure 14a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 14b for Figure 14a The equivalent circuit diagram is shown below. (Reference) Figure 14a and Figure 14b As shown, the difference between the inductor circuit 10-1 in the inductor 01 provided in this embodiment and the inductor circuit 10-1 in Embodiment 7 is that the inductor circuit 10-1, in addition to including the first sub-conducting segment L2, also includes a first sub-conducting segment L21; that is, the inductor circuit 10-1 has two first sub-conducting segments L2 and L21. One end of the first sub-conducting segment L21 is connected to the tap a4 near the first main port P1, and the other end of the first sub-conducting segment L21 is connected to the tap port T2 near the second main port P2. Schematic, the first sub-conducting segments L2 and L21 can be approximately symmetrically arranged along the direction of the vertical axis of symmetry DD'.

[0159] In the inductor circuit 10-1 provided in this embodiment, the switching of inductance values ​​between any two ports of the first main port P1, the second main port P2, and the two tap ports T1 and T2 in the inductor circuit 10-1 can be realized by controlling the on and off of the switch s1; similarly, the inductor circuit 10-2 is also used.

[0160] Example 12

[0161] Figure 15a This is a schematic diagram of the layout of an inductor 01 provided in this embodiment. Figure 15b for Figure 15a The equivalent circuit diagram is shown below. (Reference) Figure 15a and Figure 15b As shown, the inductor circuit 10-1 in the inductor 01 provided in this embodiment is based on the inductor circuit 10-1 in embodiment eleven, and further includes a first sub-conducting segment L3 and a first sub-conducting segment L31. That is, in this case, the inductor circuit 10-1 includes four first sub-conducting segments L2, L3, L21, and L31.

[0162] As illustrated in Figure 15, four first conductive segments L2, L3, L21, and L31 are connected to different taps. First conductive segments L2 and L3 are connected to the same tap port T1 via a shared conductive section, and first conductive segments L21 and L31 are connected to the same tap port T2 via a shared conductive section. First conductive segment L3 and conductive segment L42 are connected to tap a2 via a shared conductive section, and first conductive segments L31 and L41 are connected to tap a1 via a shared conductive section. The configuration of the first conductive segments L2 and L3 and related switches can be referenced from the configurations in Embodiments 8, 9, and 10 above, and will not be repeated here.

[0163] Regarding the first conductive segments L21 and L31 and the related switch settings, the first conductive segments L21 and L2 are approximately symmetrically arranged, and the first conductive segments L31 and L3 are approximately symmetrically arranged. The settings of the first conductive segments L2 and L3 and the related switches in the aforementioned embodiments eight, nine and ten can be referred to accordingly, and will not be repeated here.

[0164] In the inductor circuit 10-1 provided in this embodiment, the switching of inductance values ​​between any two ports of the first main port P1, the second main port P2, and the two tap ports T1 and T2 in the inductor circuit 10-1 can be realized by controlling the on / off states of switches s1, s2, s3, s21, and s31; similarly, the inductor circuit 10-2 is also used.

[0165] Based on this, in order to minimize the impact of inductor 01 on other circuit components when applied to the oscillator, in the embodiments of inductor 01 using two inductor circuits 10-1 and 10-2 (including embodiments seven, eight, nine, ten, eleven, and twelve), the main conductive segments of the two inductor circuits 10-1 and 10-2 can be arranged in a figure-eight shape. In this way, the magnetic fields generated at both ends of the figure-eight shaped inductor 01 can cancel each other out, thereby avoiding significant impact on other circuit components, and also preventing other circuit components from significantly impacting inductor 01.

[0166] As illustrated, taking inductor 01 in Embodiment 10 as an example, such as Figure 16As shown, the main conductive segments L1 and L1' in the two inductor circuits 10-1 and 10-2 form a figure-eight structure. Specifically, the main conductive segment L1 of inductor circuit 10-1 constitutes the left half of the lower ring and the right half of the upper ring of the figure-eight structure, while the main conductive segment L1' of inductor circuit 10-2 constitutes the right half of the lower ring and the left half of the upper ring of the figure-eight structure.

[0167] To quickly correct the inductance value of inductor 01 and avoid re-chipping, thereby reducing costs; such as Figure 17 or Figure 18 As shown, in some embodiments, an inductance adjustment element 11 can be provided on the encapsulation layer of the inductor 01 to further adjust the inductance value of the inductor 01.

[0168] In some embodiments, in order to ensure that the inductor 01 has good anti-interference capability when applied to a differential circuit, as shown in FIG14 or FIG15, in some embodiments, the inductor adjustment element 11 may be configured to be symmetrical about the axis of symmetry DD' in the inductor 01.

[0169] In some embodiments, such as Figure 17 As shown, the inductance adjustment element 11 can be a closed coil.

[0170] This application does not limit the shape of the closed coil described above. The shape of the closed coil can be circular, elliptical, quadrilateral, hexagonal, octagonal, etc.; in practice, it can be selected and set as needed.

[0171] This application does not limit the size of the aforementioned closed coil. For example... Figure 17 As shown, in some possible implementations, the closed coil can be smaller than the non-closed loop formed by the main conductive segment L1 and located inside the non-closed loop. In some possible implementations, the closed coil can also be larger than the non-closed loop formed by the main conductive segment L1 and located inside the closed coil.

[0172] In some embodiments, the closed coil can be connected to the ground terminal to reduce the interference of the closed coil to the inductor 01.

[0173] In some embodiments, such as Figure 18 As shown, the inductance adjustment element 11 can be a metal shielding pattern. This metal shielding pattern can be a planar metal pattern or a metal mesh pattern; the present invention does not specifically limit this. (Illustrative example follows.) Figure 19 As shown, the metal shielding pattern can be a specially designed metal pattern.

[0174] In some embodiments, the metal shielding pattern described above can be connected to the ground terminal to reduce the interference of the metal shielding pattern on the inductor 01.

[0175] It is understood that this application is only illustrative of the application of inductor 01 in an oscillator, but it is not limited to this. Inductor 01 in this application can also be applied to other integrated circuits besides oscillators.

[0176] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An inductor, characterized in that, include: One main conductive segment, at least two first sub-conductive segments, and at least one switch; wherein, The main conductive segment forms a non-closed loop, and each end of the main conductive segment is connected to a main port; at least two taps are provided on the main conductive segment; one end of the first sub-conductive segment is connected to one of the taps, and the other end of the first sub-conductive segment is connected to a tap port; the at least two first sub-conductive segments and the at least one switch are all located inside the non-closed loop; The at least one switch includes a first switch disposed on a second conductive segment connected between at least two of the taps, and / or a second switch disposed on any one or more of the first conductive segments, the at least one switch being used to switch the inductance value between any two of the two main ports and at least two tap ports.

2. The inductor according to claim 1, characterized in that, The at least two first conductive segments include two first conductive segments, each of which is connected to a different tap port.

3. The inductor according to claim 1, characterized in that, The at least two first conductive segments include four first conductive segments; The four first conductive segments are divided into a first group and a second group; wherein, the two first conductive segments belonging to the first group are connected to a tap port, and the two first conductive segments belonging to the second group are connected to another tap port.

4. The inductor according to any one of claims 1-3, characterized in that, The two taps connected to the first switch are respectively connected to different first conductive segments; or, the two taps connected to the first switch and the taps connected to the at least two first conductive segments are different.

5. The inductor according to any one of claims 1-4, characterized in that, The non-closed loop is shaped like the number "8".

6. The inductor according to any one of claims 1-5, characterized in that, The inductor also includes an encapsulation layer and an inductance adjustment element located on the encapsulation layer and connected to the ground terminal; The inductance adjustment element is a closed coil or a metal shielding pattern.

7. The inductor according to any one of claims 1-6, characterized in that, The non-closed loop is axisymmetric.

8. The inductor according to claim 2, characterized in that, The non-closed loop is axisymmetric; the two first conductive segments are symmetrical about the axis of symmetry of the non-closed loop.

9. The inductor according to claim 3, characterized in that, The non-closed loop is symmetrical about the axis of symmetry; the two first conductive segments belonging to the first group and the two first conductive segments belonging to the second group are symmetrical about the axis of symmetry of the non-closed loop.

10. An inductor, characterized in that, include: Two inductor circuits; wherein, the first inductor circuit includes a main conductive segment, at least one first sub-conductive segment and at least one switch, and the first inductor circuit is either of the two inductor circuits; The main conductive segment is connected to a main port at each end; the main conductive segment is provided with at least two taps; one end of the first sub-conductive segment is connected to one of the taps, and the other end of the first sub-conductive segment is connected to a tap port; the main conductive segment and at least one of the first sub-conductive segments form a non-closed loop; a second sub-conductive segment is connected between at least two of the taps; the at least one switch includes a first switch disposed on the second sub-conductive segment, and / or a second switch disposed on any one or more of the first sub-conductive segments; the at least one switch and the second sub-conductive segment are located inside the non-closed loop, and the at least one switch is used to switch the inductance value between any two of the two main ports and at least one tap port.

11. The inductor according to claim 10, characterized in that, The two inductor circuits are axially symmetrical.

12. The inductor according to claim 10 or 11, characterized in that, The at least one first conductive segment includes one first conductive segment; or, the at least one first conductive segment includes two first conductive segments, the two first conductive segments being connected to different tap ports respectively; or, the at least one first conductive segment includes four first conductive segments, the four first conductive segments being divided into a first group and a second group, wherein the two first conductive segments belonging to the first group are connected to one tap port, and the two first conductive segments belonging to the second group are connected to another tap port.

13. The inductor according to any one of claims 10-12, characterized in that, The two taps connected to the first switch are respectively connected to different first conductive segments; or, the two taps connected to the first switch and the tap connected to the at least one first conductive segment are different.

14. The inductor according to any one of claims 10-13, characterized in that, The non-closed loops in the two inductor circuits are shaped like the number "8".

15. The inductor according to any one of claims 10-14, characterized in that, The inductor also includes an encapsulation layer and an inductance adjustment element located on the encapsulation layer and connected to the ground terminal; The inductance adjustment element is a closed coil or a metal shielding pattern.

16. An oscillator, characterized in that, Includes a control circuit and an inductor as described in any one of claims 1-15; The main port and tap port of the inductor are respectively connected to the control circuit.

17. A terminal device, characterized in that, Includes the oscillator as described in claim 16.

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