CN114255962A

CN114255962A - Inductance device

Info

Publication number: CN114255962A
Application number: CN202011000992.XA
Authority: CN
Inventors: 颜孝璁; 黄亭尧; 陈家源
Original assignee: Realtek Semiconductor Corp
Current assignee: Realtek Semiconductor Corp
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2022-03-29

Abstract

An inductance device comprises a first wire, a second wire and a connecting piece. The first wire is disposed in the first area. The second routing is configured in a second area, and the first area and the second area are adjacent to a junction. The connecting piece is arranged at the area which is adjacent to the junction and is not provided with the first wire and the second wire, and is coupled with the first wire and the second wire.

Description

Inductance device

Technical Field

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

Background

Various types of conventional inductors, such as helical inductors (spiral inductors), have advantages and disadvantages, such as high Q factor and large mutual inductance (mutual inductance), which occur between coils. For the splay inductor, which has two sets of coils, the coupling between the two sets of coils occurs less often, however, the splay inductor occupies a larger area in the device. It is difficult to design a juxtaposed inductor (twin inductor) into a symmetrical structure, and its terminals need to be arranged at specific positions. Therefore, the application range of the inductor is limited.

Disclosure of Invention

One technical aspect of the present disclosure relates to an inductive device including a first trace, a second trace, and a connector. The first wire is disposed in the first area. The second routing is configured in the second area, and the first area and the second area are adjacent to a junction. The connecting piece is arranged at the area which is adjacent to the junction and is not provided with the first wire and the second wire, and is coupled with the first wire and the second wire.

Therefore, according to the technical content of the present application, the inductance device according to the embodiment of the present application can effectively utilize the empty blocks to configure the connection structure, thereby simplifying the connection structure and improving the quality factor.

Drawings

The foregoing and other objects, features, advantages and embodiments of the disclosure will be more readily understood from the following description taken in conjunction with the accompanying drawings in which:

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

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

Fig. 5 is a schematic diagram illustrating an inductive device according to an embodiment of the 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 refer to similar elements/components.

Detailed Description

In order to make the disclosure more complete and complete, the following description is provided for illustrative purposes with respect to the implementation aspects and specific embodiments of the present application; it is not intended to be the only form in which the embodiments of the present application may be practiced or utilized. 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 application 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 the figure, the inductive device 1000 includes a first trace 1100, a second trace 1200 and at least one connection component 1300.

In the structural configuration, the first trace 1100 is disposed in the first area 2000, and the second trace 1200 is disposed in the second area 3000. For example, the first trace 1100 is located in the left area of the figure, and the second trace 1200 is located in the right area of the figure.

In addition, the first region 2000 and the second region 3000 are adjacent to the boundary 4000. The at least one connecting element 1300 is disposed at a region adjacent to the junction 4000 and not disposed with the first trace 1100 and the second trace 1200, and couples the first trace 1100 and the second trace 1200. For example, the first trace 1100 and the second trace 1200 can be 8-sided traces, so the upper left block 2100, the lower left block 2200, the upper right block 2300 and the lower right block 2400 in the first area 2000 do not have the first trace 1100, i.e., the above blocks are empty blocks. Similarly, the upper left block 3100, the lower left block 3200, the upper right block 3300 and the lower right block 3400 of the second area 3000 do not have the second trace 1200, and are also empty blocks. The inductance device 1000 of the present application can utilize the vacant blocks to arrange at least one connection element 1300 for coupling the first trace 1100 and the second trace 1200. However, the present application is not limited to the embodiment shown in fig. 1, the first trace 1100 and the second trace 1200 may be configured as other types of traces according to actual requirements, such as diamond-shaped traces, and there are vacant areas around the former, so that at least one of the connectors 1300 can be configured in the vacant areas.

In one embodiment, at least one of the connectors 1300 includes a connector 1310 and a connector 1320, the connector 1320 can be located on a first layer and coupled to the first trace 1100 and the second trace 1200, and the connector 1310 can be located on a second layer and straddles the connector 1320, and both are formed in a staggered structure. In another embodiment, the first trace 1100 and the second trace 1200 are located at a first layer, and the connector 1310 is located at a second layer. In another embodiment, the first layer is different from the second layer.

In other embodiments, the first trace 1100 includes a plurality of first coils 1110. In addition, the second trace 1200 includes a plurality of second coils 1210.

In an embodiment, the inductive device 1000 further includes an input-output device 1400. The input/output device 1400 is coupled to the innermost first coil 1110 of the plurality of first coils 1110. In another embodiment, the first coil 1110 is located at a first layer and the input-output device 1400 is located at a second layer, which may be coupled through a through via (via).

In other embodiments, the input-output device 1400 includes a first end and a second end. The first end (e.g., the lower end) of the input/output device 1400 is coupled to the innermost first coil 1110 of the plurality of first coils 1110. The second end (e.g., the upper end point) of the input/output device 1400 is disposed at a side opposite to the junction 4000 and is located at a region where the first trace 1100 and the second trace 1200 are not disposed. For example, the upper end of the input/output device 1400 is disposed at the left side relative to the junction 4000 between the first area 2000 and the second area 3000, and the upper left block 2100 of the first trace 1100 and the second trace 1200 is not disposed in the upper left corner of the first area 2000.

In one embodiment, the inductive device 1000 further includes a center tap piece 1500. The center tap piece 1500 is coupled to the innermost second coil 1210 of the plurality of second coils 1210. In another embodiment, the second coil 1210 is located in a first layer and the center tap piece 1500 is located in a second layer, which may be coupled by a through via.

In other embodiments, the central tap member 1500 includes a first end and a second end. The first end (e.g., the lower end) of the center tap piece 1500 is coupled to the innermost second coil 1210 of the plurality of second coils 1210. The second end (e.g., the upper end point in the figure) of the central tap piece 1500 is disposed at a side opposite to the junction 4000 and is located at a block where the first trace 1100 and the second trace 1200 are not disposed. For example, the upper end of the central tap 1500 is disposed at the right side relative to the junction 4000 between the first area 2000 and the second area 3000, and the upper right block 3300 of the first trace 1100 and the second trace 1200 is not disposed in the upper right corner of the second area 3000.

In one embodiment, the first coils 1110 and the second coils 1210 are alternatively coupled to the first side (e.g., upper side) and the second side (e.g., lower side) of the inductive device 1000, or the first coils 1110 and the second coils 1210 are alternatively coupled to the third side (e.g., left side) and the fourth side (e.g., right side) of the inductive device 1000 (as shown in fig. 5). In another embodiment, the first side and the second side are located in a first direction (e.g., vertical direction in the figure), the third side and the fourth side are located in a second direction (e.g., horizontal direction in the figure), and the first direction is perpendicular to the second direction. It should be noted that the present application is not limited to the structure shown in fig. 1, which is only one implementation of the present application.

Fig. 2 is a schematic diagram showing experimental data of an inductive device 1000 shown in fig. 1 according to an embodiment of the present application. As shown, the figure of merit for the architecture configuration of the present application is shown as C1, and the inductance is shown as L1. As can be seen, the inductance device 1000 using the architecture of the present application has a better quality factor. For example, at a frequency of 5GHz, the best quality factor of the inductive device 1000 is about 8.2. In one embodiment, the size of the inductive device 1000 of the present application may be 130 micrometers (μm) X64 micrometers, the line width may be 3 micrometers, and the line spacing may be 2 micrometers. However, the present application is not limited to the embodiment shown in fig. 2, which is only one implementation of the present application.

Fig. 3 is a schematic diagram illustrating an inductive device according to an embodiment of the disclosure. The input/output terminals 1400A of the inductive device 1000A of fig. 3 are configured differently than the input/output terminals 1400 of the inductive device 1000 shown in fig. 1. As shown, the input/output end 1400A is coupled to the outermost first coil 1110A of the plurality of first coils 1110A. In another embodiment, the first coil 1110A and the input/output end 1400A are located at the same layer.

In other embodiments, the input/output end 1400A includes a first end and a second end. The first end (e.g., the lower end) of the input/output end 1400A is coupled to the outermost first coil 1110A of the plurality of first coils 1110A. The second end (e.g., the upper end point in the figure) of the input/output end 1400A is disposed at a side opposite to the junction 4000A and is located at a block where the first trace 1100A and the second trace 1200A are not disposed. For example, the upper end of the input/output end 1400A is disposed at the left side of the junction 4000A corresponding to the first area 2000A and the second area 3000A, and is located at the upper left corner of the first area 2000A, where the upper left block 2100A of the first trace 1100A and the second trace 1200A are not disposed.

In one embodiment, the arrangement of the center tap piece 1500A of the inductive device 1000A of fig. 3 is different than the center tap piece 1500 of the inductive device 1000 of fig. 1. As shown, the center tap piece 1500A is coupled to the outermost second coil 1210A of the plurality of second coils 1210. In another embodiment, the second coil 1210A is located in a first layer and the center tap piece 1500A is located in a second layer, which may be coupled by a through via.

In other embodiments, the central tap piece 1500A includes a first end and a second end. The first end (e.g., the lower end) of the center tap 1500A is coupled to the outermost second coil 1210A of the plurality of second coils 1210A. The second end (e.g., the upper end point in the figure) of the central tap piece 1500A is disposed at a side opposite to the junction 4000A and is located at a block where the first trace 1100A and the second trace 1200A are not disposed. For example, the upper end of the central tap 1500A is disposed at the right side of the junction 4000A corresponding to the first area 2000A and the second area 3000A, and the upper right block 3300A of the first trace 1100A and the second trace 1200A is not disposed in the upper right corner of the second area 3000A.

In an embodiment, the first coils 1110A and the second coils 1210A are alternatively coupled to the first side (e.g., upper side) and the second side (e.g., lower side) of the inductive device 1000A, or the first coils 1110A and the second coils 1210A are alternatively coupled to the third side (e.g., left side) and the fourth side (e.g., right side) of the inductive device 1000A (as shown in fig. 5). In another embodiment, the first side and the second side are located in a first direction (e.g., vertical direction in the figure), the third side and the fourth side are located in a second direction (e.g., horizontal direction in the figure), and the first direction is perpendicular to the second direction. It should be noted that, in the embodiment of fig. 3, the element numbers are similar to those in fig. 1, and have similar structural features, and are not described herein again for brevity of the description. In addition, the present application is not limited to the structure shown in fig. 3, which is only one implementation of the present application.

Fig. 4 is a schematic diagram illustrating experimental data of an inductive device 1000A shown in fig. 3 according to an embodiment of the present application. As shown, the figure of merit for the architecture configuration of the present application is shown as C2, and the inductance is shown as L2. As can be seen, the inductive device 1000A using the architecture of the present application has a better quality factor. For example, at a frequency of 5GHz, the best quality factor of the inductive device 1000A is about 8.8. In one embodiment, the size of the inductive device 1000A of the present application may be 130 micrometers X64 micrometers, the line width may be 3 micrometers, and the line pitch may be 2 micrometers. However, the present application is not limited to the embodiment shown in fig. 4, which is only one implementation of the present application.

Fig. 5 is a schematic diagram illustrating an inductive device according to an embodiment of the disclosure. Compared to the inductive device 1000A shown in fig. 3, the first coil 1110B and the second coil 1210B of the inductive device 1000B in fig. 5 are configured differently. As shown, the first coils 1110B and the second coils 1210B are alternately coupled on the third side (e.g., left side) and the fourth side (e.g., right side) of the inductive device 1000B. In another embodiment, the first side and the second side of the inductive device 1000B are located in a first direction (e.g., vertical direction in the figure), the third side and the fourth side of the inductive device 1000B are located in a second direction (e.g., horizontal direction in the figure), and the first direction is perpendicular to the second direction. It should be noted that, in the embodiment of fig. 5, the element numbers are similar to those in fig. 1, and have similar structural features, and are not described herein again for brevity of the description. In addition, the present application is not limited to the structure shown in fig. 5, which is only one implementation of the present application.

As is apparent from the above-described embodiments of the present application, the present application has the following advantages. The inductance device disclosed by the embodiment of the application can effectively utilize the vacant blocks to arrange the connection structure, so that the connection structure is simplified, and the quality factor can be improved.

[ notation ] to show

1000. 1000A, 1000B: inductance device

1100. 1100A, 1100B: first wire

1110. 1110A, 1110B: first coil

1200. 1200A, 1200B: second routing

1210. 1210A, 1210B: second coil

1300. 1300A, 1300B: at least one connecting piece

1310. 1310A, 1310B: connecting piece

1320. 1320A, 1320B: connecting piece

1400: input/output member

1400A, 1400B: input/output terminal

1500. 1500A, 1500B: central tap piece

2000. 2000A, 2000B: first region

2100. 2100A, 2100B: block

2200. 2200A, 2200B: block

2300. 2300A, 2300B: block

2400. 2400A, 2400B: block

3000. 3000A, 3000B: second region

3100. 3100A, 3100B: block

3200. 3200A, 3200B: block

3300. 3300A, 3300B: block

3400. 3400A, 3400B: block

4000. 4000A, 4000B: at the interface.

Claims

1. An inductive device, comprising:

the first routing is configured in the first area;

a second wire disposed in a second area, wherein the first area and the second area are adjacent to a boundary; and

at least one connecting piece, which is configured at the block adjacent to the junction and not configured with the first wire and the second wire, and is coupled with the first wire and the second wire.

2. The inductive device of claim 1, wherein the first trace and the second trace are located on a first layer and the at least one connector is located on a second layer, wherein the first layer is different from the second layer.

3. The inductive device of claim 2, wherein the first trace includes a plurality of first coils, and wherein the second trace includes a plurality of second coils.

4. The inductive device of claim 3, further comprising:

an input/output element coupled to an innermost first coil of the first coils, wherein the input/output element is located on the second layer, and the input/output element includes:

a first end coupled to the innermost first coil of the first coils; and

and the second end is arranged on one side opposite to the junction and is positioned in the block where the first routing wire and the second routing wire are not arranged.

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

a center tap coupled to an innermost second coil of the second coils, wherein the center tap is located on the second layer, and the center tap comprises:

the first end is coupled to the second coil which is positioned at the innermost side in the second coils; and

6. The inductive device of claim 5, wherein the first windings and the second windings are coupled alternately on a first side and a second side of the inductive device, or the first windings and the second windings are coupled alternately on a third side and a fourth side of the inductive device.

7. The inductive device of claim 6, wherein the first side and the second side are in a first direction, the third side and the fourth side are in a second direction, and the first direction is perpendicular to the second direction.

8. The inductive device of claim 3, further comprising:

an input/output end disposed on the outermost first coil of the first coils, wherein the input/output end includes:

the first end is arranged on the first coil which is positioned at the outermost side in the first coils; and

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

a center tap coupled to the outermost second coil of the second coils, wherein the center tap is located on the second layer, and the center tap comprises:

the first end is coupled with the second coil which is positioned at the outermost side in the second coils; and

10. The inductive device of claim 9, wherein the first windings and the second windings are alternately coupled on a first side and a second side of the inductive device, or the first windings and the second windings are alternately coupled on a third side and a fourth side of the inductive device, wherein the first side and the second side are in a first direction, the third side and the fourth side are in a second direction, and the first direction is perpendicular to the second direction.