CN115691944A

CN115691944A - Inductance device

Info

Publication number: CN115691944A
Application number: CN202110844429.9A
Authority: CN
Inventors: 颜孝璁
Original assignee: Realtek Semiconductor Corp
Current assignee: Realtek Semiconductor Corp
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2023-02-03

Abstract

An inductance device comprises a first wire, a second wire, a first connecting piece and a second connecting piece. The first wire includes a first sub-wire and a second sub-wire. The second sub-trace is configured to be immediately adjacent to the first sub-trace. The second wire comprises a third sub-wire. The third sub-trace is configured to be immediately adjacent to the second sub-trace. The first connector is used for coupling the first sub-trace. The second connector is disposed adjacent to the first connector and is used for coupling the second sub-trace.

Description

Inductance device

Technical Field

The present disclosure relates to an electronic device, and more particularly, to an inductive device.

Background

Various types of conventional inductors have advantages and disadvantages, such as a spiral inductor (spiral inductor), which has a high quality factor (Q value) and a large mutual inductance value (mutual inductance). For the spiral transformer, it is difficult to avoid the coupling effect with other devices. For the delta-shaped inductor/transformer, which has two sets of coils, the coupling between the two sets of coils occurs less frequently, however, the delta-shaped inductor/transformer occupies a larger area in the device. It is difficult to design a parallel inductor/transformer (twin inductor/transformer) to have a symmetrical structure, and the input/output terminal of the parallel inductor can be designed only at a specific position. Therefore, the application range of the inductor is limited.

Disclosure of Invention

One aspect of the present disclosure relates to an inductance device, which includes a first trace, a second trace, a first connecting element, and a second connecting element. The first wire includes a first sub-wire and a second sub-wire. The second sub-trace is configured to be immediately adjacent to the first sub-trace. The second wire comprises a third sub-wire. The third sub-trace is disposed immediately adjacent to the second sub-trace. The first connector is used for coupling the first sub-trace. The second connector is disposed adjacent to the first connector and is used for coupling the second sub-trace.

Therefore, according to the technical content of the present invention, since the first sub-trace and the second sub-trace of the first trace of the inductance device shown in the present embodiment are disposed in close proximity, the capacitance between the two sub-traces can be effectively reduced. In addition, the inductor device according to the present embodiment may be configured to improve a quality factor (Q value).

Drawings

The foregoing and other objects, features, advantages and embodiments of the disclosure will be apparent from the following more particular description of the embodiments, as illustrated in the accompanying drawings in which:

fig. 1 is a schematic diagram illustrating an inductive device according to an embodiment of the disclosure.

Fig. 2 is a schematic diagram illustrating an inductive device according to an embodiment of the disclosure.

Fig. 3 is a schematic diagram illustrating an inductive device according to an embodiment of the disclosure.

Fig. 4 is a schematic diagram illustrating experimental data of an inductive device according to an embodiment of the present disclosure.

In accordance with conventional practice, the various features and elements of the drawings are not drawn to scale in order to best illustrate the specific features and elements associated with the present disclosure. Moreover, the same or similar reference numbers are used throughout the different drawings to reference like elements/components.

Detailed Description

In order to make the disclosure more thorough and complete, illustrative descriptions are provided below for embodiments and specific examples of the disclosure; it is not intended to be exhaustive or to limit the invention to the precise form disclosed. The embodiments are intended to cover the features of the various embodiments as well as the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and step sequences.

Unless defined otherwise herein, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Furthermore, as used herein, the singular tense of a noun, unless otherwise conflicting with context, encompasses the plural form of that noun; the use of plural nouns also covers the singular form of such nouns.

Fig. 1 is a schematic diagram illustrating an inductive device 1000 according to an embodiment of the disclosure. As shown in fig. 1, the inductive device 1000 includes a first trace 1100, a second trace 1200, a first connection element 1300, and a second connection element 1400. The first trace 1100 includes a first sub-trace 1110 and a second sub-trace 1120. The second trace 1200 includes a third sub-trace 1210.

Structurally, the first sub-trace 1110 is disposed adjacent to the second sub-trace 1120. The second sub-trace 1120 is configured to be immediately adjacent to the third sub-trace 1210. In addition, the first connector 1300 is configured to couple to the first sub-trace 1110. The second connection 1400 is disposed adjacent to the first connection 1300 and is used to couple the second sub-trace 1120. Since the first sub-trace 1110 and the second sub-trace 1120 of the first trace 1100 are disposed closely, the capacitance between the two sub-traces can be effectively reduced.

In an embodiment, the second trace 1200 further includes a fourth sub-trace 1220, and the fourth sub-trace 1220 is disposed next to the third sub-trace 1210. Since the third sub-trace 1210 and the fourth sub-trace 1220 of the second trace 1200 are disposed closely adjacent to each other, the capacitance between the two sub-traces can be effectively reduced. It should be noted that the two sub-traces are configured to be "adjacent" to each other, which means that the two sub-traces are directly configured side by side, and the two sub-traces are not disposed between the two sub-traces.

In another embodiment, on a first side (e.g., the left side of the upper half area in fig. 1) of the first area 5000, the first sub-trace 1110 and the second sub-trace 1120 are disposed on the outer side of the inductive device 1000, and the third sub-trace 1210 and the fourth sub-trace 1220 are disposed on the inner side of the inductive device 1000. In an embodiment, on a first side (e.g., the left side of the upper half area in fig. 1) of the first area 5000, the sub-traces are arranged in a manner of a first sub-trace 1110, a second sub-trace 1120, a third sub-trace 1210, and a fourth sub-trace 1220.

In an embodiment, on a second side (e.g., the right side of the upper half area in fig. 1) of the first area 5000, the first sub-trace 1110 and the second sub-trace 1120 are disposed on the inner side of the inductive device 1000, and the third sub-trace 1210 and the fourth sub-trace 1220 are disposed on the outer side of the inductive device 1000. Further, the first side of the first region 5000 is opposite to the second side (the left side is opposite to the right side of the upper half region in fig. 1). In another embodiment, on the second side of the first area 5000 (e.g., the right side of the upper half area in fig. 1), the sub-traces are arranged in a manner of a second sub-trace 1120, a first sub-trace 1110, a fourth sub-trace 1220 and a third sub-trace 1210.

In another embodiment, on a third side (e.g., the left side of the lower half area in fig. 1) of the second area 6000, the first sub-trace 1110 and the second sub-trace 1120 are disposed on the outer side of the inductive device 1000, and the third sub-trace 1210 and the fourth sub-trace 1220 are disposed on the inner side of the inductive device 1000. In an embodiment, on a third side (e.g., the left side of the lower half area in fig. 1) of the second area 6000, the sub-traces are arranged in the manner of the second sub-trace 1120, the first sub-trace 1110, the fourth sub-trace 1220 and the third sub-trace 1210.

In an embodiment, on a fourth side of the second area 6000 (e.g., the right side of the lower half area in fig. 1), the first sub-trace 1110 and the second sub-trace 1120 are disposed on the inner side of the inductive device 1000, and the third sub-trace 1210 and the fourth sub-trace 1220 are disposed on the outer side of the inductive device 1200, in addition, the first area 5000 is adjacent to the second area 6000 (e.g., the upper half area is adjacent to the lower half area in fig. 1), and the third side of the second area 6000 is opposite to the fourth side (e.g., the left side is opposite to the right side of the lower half area in fig. 1). In another embodiment, on the fourth side of the second area 6000 (e.g., the right side of the lower half area in fig. 1), the sub-traces are arranged in the first sub-trace 1110, the second sub-trace 1120, the third sub-trace 1210 and the fourth sub-trace 1220.

Referring to fig. 1, the inductive device 1000 further includes a third connecting member 1500 and a fourth connecting member 1600. The third connector 1500 is used to couple the third sub-trace 1210. The fourth connection 1600 is disposed adjacent to the third connection 1500 and the first connection 1300, and is used for coupling the fourth sub-trace 1220. Further, the first connection 1300 is disposed immediately adjacent to the second connection 1400. It should be noted that the two connecting members are arranged "adjacent to" each other, which means that the two connecting members are directly arranged side by side, and there is no other connecting member between the two connecting members. In one embodiment, the connecting members are arranged in a manner of a second connecting member 1400, a first connecting member 1300, a fourth connecting member 1600 and a third connecting member 1500.

In an embodiment, the first sub-trace 1110, the second sub-trace 1120, the third sub-trace 1210 and the fourth sub-trace 1220 are located on the first layer. In addition, the first connecting member 1300, the second connecting member 1400, the third connecting member 1500, and the fourth connecting member 1600 are located at a second layer, and the first layer and the second layer are located at different layers.

In another embodiment, the inductive device 1000 further includes an input/output terminal 1700 and a central tap terminal 1800. The input/output terminal 1700 and the center tap terminal 1800 may be disposed on the same side (e.g., the lower side of the second region 6000 in fig. 1). In addition, the central tap end 1800 can be pulled out to the outside by the third sub-trace 1210 on the inside. It should be noted that the present disclosure is not limited to the structure shown in fig. 1, which is only used to exemplarily illustrate one implementation manner of the present disclosure.

Fig. 2 is a schematic diagram illustrating an inductive device 1000A according to an embodiment of the disclosure. The structural configuration of the inductive device 1000A of fig. 2 differs from that of the inductive device 1000 of fig. 1, as will be described later.

Referring to fig. 2, on the first side of the first area 5000A (e.g., the left side of the upper half area in fig. 2), the fourth sub-trace 1220A is disposed outside the inductive device 1000A, the third sub-trace 1210A is disposed inside the inductive device 1000A, and the first sub-trace 1110A and the second sub-trace 1120A are disposed between the third sub-trace 1210A and the fourth sub-trace 1220A. In an embodiment, on a first side (e.g., the left side of the upper half area in fig. 2) of the first area 5000A, the sub-traces are arranged in a manner of a fourth sub-trace 1220A, a first sub-trace 1110, a second sub-trace 1120 and a third sub-trace 1210. In an embodiment, the fourth sub-trace 1220A is disposed immediately adjacent to the first sub-trace 1110A.

In an embodiment, on a second side (e.g., the right side of the upper half area in fig. 2) of the first area 5000A, the first sub-trace 1110A is disposed inside the inductive device 1000A, the second sub-trace 1120A is disposed outside the inductive device 1000A, and the third sub-trace 1210A and the fourth sub-trace 1220A are disposed between the first sub-trace 1110A and the second sub-trace 1120A. Further, the first side of the first region 5000A is opposite to the second side (the left side is opposite to the right side of the upper half region in fig. 2). In another embodiment, on the second side of the first area 5000A (e.g., the right side of the upper half area in fig. 2), the sub-traces are arranged in a manner of a first sub-trace 1110A, a fourth sub-trace 1220A, a third sub-trace 1210A and a second sub-trace 1120A.

In another embodiment, at a third side (e.g., the left side of the lower half area in fig. 2) of the second area 6000A, the first sub-trace 1110A is disposed outside the inductive device 1000A, the second sub-trace 1120A is disposed inside the inductive device 1000A, and the third sub-trace 1210A and the fourth sub-trace 1220A are disposed between the first sub-trace 1110A and the second sub-trace 1120A.

In an embodiment, at a fourth side of the second area 6000A (e.g., the right side of the lower half area in fig. 2), the third sub-trace 1210A is disposed at the outer side of the inductive device 1000A, the fourth sub-trace 1220A is disposed at the inner side of the inductive device 1000A, and the first sub-trace 1110A and the second sub-trace 1120A are disposed between the third sub-trace 1210A and the fourth sub-trace 1220A. In addition, the first area 5000A is adjacent to the second area 6000A (e.g., the upper half area is adjacent to the lower half area in fig. 2), and the third side of the second area 6000A is opposite to the fourth side (e.g., the left side is opposite to the right side of the lower half area in fig. 2). In another embodiment, on the fourth side of the second area 6000A (e.g., the right side of the lower half area in fig. 2), the sub-traces are arranged in the manner of a fourth sub-trace 1220, a first sub-trace 1110, a second sub-trace 1120 and a third sub-trace 1210.

Referring to fig. 2, the inductive device 1000A further includes a third connecting element 1500A and a fourth connecting element 1600A. The third connection member 1500A is used to couple the third sub-trace 1210A. The fourth connection 1600A is disposed adjacent to the third connection 1500A and is used to couple the fourth sub-trace 1220A. It should be noted that the two connecting members are arranged "adjacent to" each other, which means that the two connecting members are directly arranged side by side, and there is no other connecting member between the two connecting members. In one embodiment, the connecting members are arranged in a first connecting member 1300A, a fourth connecting member 1600A, a third connecting member 1500A and a second connecting member 1400A.

In an embodiment, the first sub-trace 1110A, the second sub-trace 1120A, the third sub-trace 1210A and the fourth sub-trace 1220A are located on the first layer. In addition, the first connection element 1300A, the second connection element 1400A, the third connection element 1500A, and the fourth connection element 1600A are located on a second layer, and the first layer and the second layer are located on different layers.

In another embodiment, the inductive device 1000A further includes an input/output terminal 1700A and a central tap terminal 1800A. The input/output terminal 1700A and the central tap terminal 1800A may be disposed on the same side (e.g., the lower side of the second region 6000A in fig. 2). In addition, the central tap end 1800A can be directly pulled out by the outer fourth sub-trace 1220. It should be noted that the present disclosure is not limited to the structure shown in fig. 2, which is only used to exemplarily illustrate one implementation of the present disclosure.

Fig. 3 is a schematic diagram illustrating an inductive device according to an embodiment of the disclosure. The structural configuration of the inductive device 1000B of fig. 3 differs from that of the inductive device 1000 of fig. 1, as will be described later.

Referring to fig. 3, on a first side of the first area 6000B (e.g., the left side of the lower half area in fig. 3), the first sub-trace 1110B and the second sub-trace 1120B are disposed outside the inductive device 1000B, and the third sub-trace 1210B is disposed inside the inductive device 1000B. In an embodiment, on a first side of the first area 6000B (e.g., the left side of the lower half area in fig. 3), the sub-traces are arranged in a manner of a first sub-trace 1110B, a second sub-trace 1120B and a third sub-trace 1210B.

In addition, on a second side (e.g., the right side of the lower half area in fig. 3) of the first area 6000B, the first sub-trace 1110B is disposed inside the inductive device 1000B, and the third sub-trace 1210B and the fourth sub-trace 1220B are disposed outside the inductive device 1000B. In an embodiment, on a second side (e.g., the right side of the lower half area in fig. 3) of the first area 6000B, the sub-traces are arranged in a manner of a first sub-trace 1110B, a third sub-trace 1210B and a fourth sub-trace 1220B. In another embodiment, the fourth sub-trace 1220B is configured to be immediately adjacent to the third sub-trace 1210B.

In an embodiment, at a third side (e.g., the left side of the upper half area in fig. 3) of the second area 5000B, the first sub-trace 1110B is disposed at the outer side of the inductive device 1000B, and the third sub-trace 1210B and the fourth sub-trace 1220B are disposed at the inner side of the inductive device 1000B. In another embodiment, on a third side (e.g., the left side of the upper half area in fig. 3) of the second area 5000B, the sub-traces are arranged in a manner of a first sub-trace 1110B, a third sub-trace 1210B and a fourth sub-trace 1220B.

In addition, on the fourth side of the second area 5000B (e.g., the right side of the upper half area in fig. 3), the first sub-trace 1110B and the second sub-trace 1120B are disposed on the inner side of the inductive device 1000B, and the fourth sub-trace 1220B is disposed on the outer side of the inductive device 1000B. In an embodiment, on the fourth side of the second area 5000B (e.g., the right side of the upper half area in fig. 3), the sub-traces are arranged in a manner of a first sub-trace 1110B, a second sub-trace 1120B and a fourth sub-trace 1220B.

In another embodiment, the first side of the first region 6000B is opposite to the second side (the left side is opposite to the right side of the lower half region in fig. 3). In addition, the first region 6000B is adjacent to the second region 5000B (e.g., the lower half region is adjacent to the upper half region in fig. 3), and the third side of the second region 5000B is opposite to the fourth side (e.g., the left side is opposite to the right side of the upper half region in fig. 3).

Referring to fig. 3, the inductive device 1000B further includes a third connecting member 1500B. The third connection member 1500B is used to couple the third sub-trace 1210B and the fourth sub-trace 1220B. The first connection 1300B is disposed immediately adjacent to the second connection 1400B. In addition, the first sub-trace 1110B, the second sub-trace 1120B, the third sub-trace 1210B and the fourth sub-trace 1220B are located on the first layer. Furthermore, the first connecting member 1300B, the second connecting member 1400B and the third connecting member 1500B are located on a second layer, and the first layer and the second layer are located on different layers.

In one embodiment, the inductive device 1000B further includes an input/output terminal 1700B and a central tap terminal 1800B. The input/output terminal 1700B and the center tap terminal 1800B may be disposed on two opposite sides (e.g., the lower side of the first region 6000B and the upper side of the second region 5000B in fig. 3). In addition, the central tap end 1800B may be disposed at a junction of the second sub-trace 1120B and the third sub-trace 1210B of the second area 5000B. It should be noted that the present disclosure is not limited to the structure shown in fig. 3, which is only used to exemplarily illustrate one implementation of the present disclosure.

Fig. 4 is a schematic diagram illustrating experimental data of an inductive device according to an embodiment of the present disclosure. As shown in fig. 4, the experimental curves of the quality factors using the

inductive devices

1000, 1000A, 1000B of fig. 1, 2 and 3 of the present application are C1, C2, C3, respectively. As can be seen from fig. 4, the

inductive devices

1000, 1000A, 1000B of fig. 1, 2 and 3 have better quality factor. For example, at a frequency of 3.5GHz, the best quality factor is about 12.22.

According to the embodiments of the present invention, the following advantages can be obtained. Since some sub-traces of the inductance device according to the present embodiment are disposed closely, the capacitance between the two sub-traces can be effectively reduced. In addition, the inductor device according to the embodiment is configured to improve the quality factor (Q value).

[ notation ] to show

1000. 1000A, 1000B: inductance device

1100. 1100A, 1100B: first wire

1110. 1120, 1110A, 1120A, 1110B, 1120B: sub-wiring

1200. 1200A, 1200B: second routing

1210. 1220, 1210A, 1220A, 1210B, 1220B: sub-wiring

1300. 1300A, 1300B: first connecting piece

1400. 1400A, 1400B: second connecting piece

1500. 1500A, 1500B: third connecting piece

1600. 1600A: fourth connecting piece

1700. 1700A, 1700B: input/output terminal

1800. 1800A, 1800B: central tap end

5000. 5000A, 5000B: first region

6000. 6000A and 6000B: second region

C1 to C3: curve line.

Claims

1. An inductive device, comprising:

a first trace, comprising:

a first sub-trace; and

a second sub-trace configured to be adjacent to the first sub-trace;

a second trace, comprising:

a third sub-trace configured to be adjacent to the second sub-trace;

a first connector for coupling the first sub-trace; and

a second connector disposed adjacent to the first connector and used for coupling the second sub-trace.

2. The inductive device of claim 1, wherein the second trace further comprises:

a fourth sub-trace disposed adjacent to the third sub-trace.

3. The inductive device of claim 2, wherein the first sub-trace and the second sub-trace are disposed on an outer side of the inductive device and the third sub-trace and the fourth sub-trace are disposed on an inner side of the inductive device on a first side of a first region, wherein the first sub-trace and the second sub-trace are disposed on the inner side of the inductive device and the third sub-trace and the fourth sub-trace are disposed on the outer side of the inductive device on a second side of the first region, wherein the first side is opposite to the second side.

4. The inductive device of claim 3, wherein the first sub-trace and the second sub-trace are disposed on an outer side of the inductive device and the third sub-trace and the fourth sub-trace are disposed on an inner side of the inductive device at a third side of a second area, wherein the first sub-trace and the second sub-trace are disposed on the inner side of the inductive device and the third sub-trace and the fourth sub-trace are disposed on the outer side of the inductive device at a fourth side of the second area, wherein the first area is adjacent to the second area and the third side is opposite to the fourth side.

5. The inductive device of claim 4, further comprising:

a third connecting member for coupling the third sub-trace; and

a fourth connection configured to be adjacent to the third connection and the first connection, and configured to couple to the fourth sub-trace, wherein the first connection is configured to be adjacent to the second connection;

the first sub-trace, the second sub-trace, the third sub-trace and the fourth sub-trace are located on a first layer, and the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are located on a second layer, wherein the first layer and the second layer are located on different layers.

6. The inductive device of claim 1, wherein the second trace further comprises:

a fourth sub-trace configured to be adjacent to the first sub-trace;

the fourth sub-trace is disposed on the outer side of the inductive device at a first side of a first area, the third sub-trace is disposed on the inner side of the inductive device, and the first sub-trace and the second sub-trace are disposed between the third sub-trace and the fourth sub-trace, wherein the first sub-trace is disposed on the inner side of the inductive device at a second side of the first area, the second sub-trace is disposed on the outer side of the inductive device, and the third sub-trace and the fourth sub-trace are disposed between the first sub-trace and the second sub-trace, wherein the first side is opposite to the second side.

7. The inductive device of claim 6, wherein the first sub-trace is disposed on an outer side of the inductive device, the second sub-trace is disposed on an inner side of the inductive device, and the third sub-trace and the fourth sub-trace are disposed between the first sub-trace and the second sub-trace, wherein the third sub-trace is disposed on an outer side of the inductive device, the fourth sub-trace is disposed on an inner side of the inductive device, and the first sub-trace and the second sub-trace are disposed between the third sub-trace and the fourth sub-trace, at a fourth side of the second region, wherein the first region is adjacent to the second region, and the third side is opposite to the fourth side.

8. The inductive device of claim 7, further comprising:

a third connecting member for coupling the third sub-trace; and

a fourth connector disposed adjacent to the third connector and used for coupling the fourth sub-trace;

9. The inductive device of claim 1, wherein the second trace further comprises:

a fourth sub-trace configured to be adjacent to the third sub-trace;

wherein the first sub-trace and the second sub-trace are disposed on the outer side of the inductive device at a first side of a first region, and the third sub-trace is disposed on the inner side of the inductive device, wherein the first sub-trace is disposed on the inner side of the inductive device at a second side of the first region, and the third sub-trace and the fourth sub-trace are disposed on the outer side of the inductive device, wherein the first sub-trace is disposed on the outer side of the inductive device at a third side of a second region, and the third sub-trace and the fourth sub-trace are disposed on the inner side of the inductive device, wherein the first sub-trace and the second sub-trace are disposed on the inner side of the inductive device at a fourth side of the second region, and the fourth sub-trace is disposed on the outer side of the inductive device.

10. The inductive device of claim 9, wherein the first side is opposite the second side, wherein the first region is adjacent to the second region, and the third side is opposite the fourth side;

wherein the inductive device further comprises:

a third connector for coupling the third sub-trace and the fourth sub-trace, wherein

The first connector is disposed adjacent to the second connector, wherein the first sub-trace, the second sub-trace, the third sub-trace and the fourth sub-trace are located on a first layer, and the first connector, the second connector and the third connector are located on a second layer, wherein the first layer and the second layer are located on different layers.