CN110033921B

CN110033921B - Inductance device

Info

Publication number: CN110033921B
Application number: CN201810031925.0A
Authority: CN
Inventors: 颜孝璁; 简育生; 叶达勋
Original assignee: Realtek Semiconductor Corp
Current assignee: Realtek Semiconductor Corp
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2021-09-14
Anticipated expiration: 2038-01-12
Also published as: CN110033921A

Abstract

An inductive device includes a first inductance and a second inductance. The first inductor includes a plurality of first coils and a first connector. The second inductor includes a plurality of second coils and second connectors. Part of the first coil is wound on the first area, and part of the first coil is wound on the second area, and the first area and the second area are respectively located on two sides of the inductance device. The first connector is used for connecting the first coil located in the first area and the first coil located in the second area. Part of the second coil is wound around the first area, and part of the second coil is wound around the second area. One end of the second connecting piece is used for connecting the end points of the second coil located inside the inductance device, and the other end is disposed outside the inductance device. The first inductance and the second inductance are symmetrical with each other based on the center line of the inductance device.

Description

Inductance device

Technical Field

The present disclosure relates to a basic electronic device, and more particularly, to an inductor device.

Background

Various types of conventional inductors, such as helical-type inductors, have advantages and disadvantages, such as a high Q value and a large mutual inductance value, which occur between coils, and a splay inductor, which has a coupling magnetic field generated in another coil due to the opposite direction of the two coils, and occupies a large area in the device. Moreover, although the stacked transformer occupies a smaller area, the quality factor of the stacked transformer cannot be optimized compared to other transformers, and thus the application range of the inductor/transformer is limited.

It is apparent that there are inconveniences and disadvantages to the above-described conventional method, and improvements are desired. In order to solve the above problems, the related art has not been able to make a thorough effort to solve the above problems, but appropriate solutions have not been developed for a long time.

Disclosure of Invention

This summary is provided to provide a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and is intended to neither identify key/critical elements of the embodiments nor delineate the scope of the embodiments.

An object of the present invention is to provide an inductor device, which can improve the problems of the prior art.

To achieve the above objective, one aspect of the present disclosure relates to an inductor device, which includes a first inductor and a second inductor. The first inductor comprises a plurality of first coils and a first connecting piece. The second inductor comprises a plurality of second coils and a second connecting piece. And part of the first coil is wound in the first area, part of the first coil is wound in the second area, and the first area and the second area are respectively positioned at two sides of the inductance device. The first connecting piece is used for connecting the first coil positioned in the first area and the first coil positioned in the second area. Part of the second coil is wound in the first area, and part of the second coil is wound in the second area. One end of the second connecting piece is used for connecting an end point of the second coil positioned at the inner side of the inductance device, and the other end of the second connecting piece is arranged at the outer side of the inductance device. The first inductor and the second inductor are symmetrical with each other with the center line of the inductor device as a reference.

Therefore, according to the technical content of the present disclosure, the present embodiment provides an inductance device, which improves the problem that the performance of a general inductance is often affected by the structural asymmetry by the symmetrical design of two inductances of the inductance device.

The basic spirit and other objects of the present invention, as well as the technical means and embodiments adopted by the present invention, will be readily understood by those skilled in the art after considering the following embodiments.

Drawings

In order to make the aforementioned and other objects, features, advantages and embodiments of the present invention comprehensible, the following description is made with reference to the accompanying drawings:

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 an inductive device according to another embodiment of the disclosure.

Fig. 3 is a graph 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 refer to similar elements/components.

[ notation ] to show

1000. 1000A: inductance device

1100. 1100A: first inductor

1110. 1110A: first sub-coil

1120. 1120A: second sub-coil

1112. 1112A, 1114A, 1116A, 1118A: endpoint

1130. 1130A: first connecting piece

1200. 1200A: second inductor

1210. 1210A: first sub-coil

1212. 1212A: endpoint

1220. 1220A: second sub-coil

1222. 1222A: endpoint

1230. 1230A: second connecting piece

1232. 1232A: first end

1234. 1234A: second end

1240. 1240A: third connecting piece

1242. 1242A: first end

1244. 1244A: second end

1300. 1300A: central connector

1310. 1310A: first end

1320. 1320A: second end

2000. 2000A: first region

3000. 3000A: second region

4000. 4000A: central connector

C1-C4: curve line

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.

Further, as used herein, the term "coupled" may mean that two or more elements are in direct physical or electrical contact with each other, or in indirect physical or electrical contact with each other, or that two or more elements are in mutual operation or action.

Fig. 1 is a schematic diagram illustrating an inductive device 1000 according to an embodiment of the present disclosure. As shown, the inductive device 1000 includes a first inductor 1100 and a second inductor 1200. The first inductor 1100 includes a plurality of first coils and a first connector 1130. In addition, the second inductor 1200 includes a plurality of second coils and a second connecting member 1230.

As shown, a portion of the first coil (e.g., coil 1110) is wound in the first region 2000, and a portion of the first coil (e.g., coil 1120) is wound in the second region 3000. In addition, the first region 2000 and the second region 3000 are respectively located at two sides of the inductive device 1000, for example, the first region 2000 and the second region 3000 are respectively located at the left side and the right side of the inductive device 1000, but the present disclosure is not limited thereto, and if the inductive device 1000 is rotated by 90 degrees, the first region 2000 and the second region 3000 are respectively located at the upper side and the lower side of the inductive device 1000. Furthermore, the first connector 1130 is used to connect the first coil (e.g., the coil 1110) located in the first region 2000 and the first coil (e.g., the coil 1120) located in the second region 3000. For example, the first connector 1130 is used to connect the terminal 1114 of the first coil (e.g., the coil 1110) located in the first region 2000 and the terminal 1118 of the first coil (e.g., the coil 1120) located in the second region 3000.

In addition, a portion of the second coil (e.g., coil 1210) is disposed in the first region 2000, and a portion of the second coil (e.g., coil 1220) is disposed in the second region 3000. Furthermore, one end 1232 of the second connecting element 1230 is used to connect to the terminal 1212 of the second coil inside the inductive device 1000, and the other end 1234 is disposed outside the inductive device 1000. In one embodiment, the second connecting member 1230 includes a ring-shaped connecting member disposed along the first coil 1100 and the second coil 1200, in other words, the ring-shaped connecting member is disposed along with the winding manner of the first coil 1100 and the second coil 1200, and thus, is in a ring shape. It should be noted that the shape, length, width, etc. of the annular connecting member can be configured according to actual requirements to adjust the inductance of the second inductor 1200, thereby improving the quality factor (Q).

In addition, the first inductor 1100 and the second inductor 1200 are symmetrical to each other with respect to the center line 4000 of the inductor apparatus 1000. For example, the terminal 1112 of the first inductor 1100 in the first region 2000 is symmetrical to the terminal 1116 of the first inductor 1100 in the second region 3000 with respect to the center line 4000, and from this logic point of view, the winding manner of the coil 1110 of the first inductor 1100 is also symmetrical to the coil 1120 of the first inductor 1100 with respect to the center line 4000, and the second inductor 1200 is also symmetrical with respect to the center line 4000. Further, the first inductor 1100 and the second inductor 1200 are mirror images of each other about the center line 4000. Further, as shown, the center line 4000 of the inductive device 1000 is located between the first region 2000 and the second region 3000.

In yet another embodiment, the first coils and the second coils are arranged in a staggered manner in the first area 2000 or the second area 3000. As shown, referring to the first region 2000, the first coil 1100 and the second coil 1200 are arranged in a staggered manner, and the second region 3000 is also the same. Specifically, in the first region 2000 or the second region 3000, the arrangement of the first coil 1100 and the second coil 1200 is a staggered arrangement of the first coil, the second coil, the first coil, and the second coil ….

In another embodiment, the first coil includes a plurality of first sub-coils 1110 and a plurality of second sub-coils 1120. As shown, the first sub-coil 1110 is wound in the first region 2000, and the second sub-coil 1120 is wound in the second region 3000. The first sub-coil 1110 is independent of the second sub-coil 1120, and the first sub-coil 1110 and the second sub-coil 1120 are connected by a first connection member 1130. As shown in the figure, the first sub-coil 1110 may be inwardly wound at an angle of 45 degrees on the upper side of the first region 2000 (e.g., inwardly wound at the center point of the first region 2000), then inwardly wound at an angle of 90 degrees on each of the upper left corner, the lower right corner and the upper right corner, and then continuously wound at an angle of 45 degrees on the upper side again to form an integral structure. In another embodiment, the second coil includes a plurality of first sub-coils 1210 and a plurality of second sub-coils 1220, and taking the first sub-coils 1210 as an example, the second coil may also be wound inward at an angle of 45 degrees on the upper side of the first area 2000, then wound inward at an angle of 90 degrees on each of the upper left corner, the lower right corner, and the upper right corner, and then wound inward at an angle of 45 degrees again on the upper side, and then continuously wound to form an integral structure.

In another embodiment, the first inductor 1100 further comprises a terminal 1112, wherein the terminal 1112 of the first inductor 1100 and the other end 1234 of the second connection 1230 are respectively located at two sides, such as the upper side and the lower side in the figure, of the inductive device 1000. In one embodiment, the other end 1234 of the first connector 1130 is on the same side, e.g., the lower side in the figure, as the other end 1230. In another embodiment, please refer to fig. 2, which is a schematic diagram illustrating an inductive device 1000A according to another embodiment of the disclosure, and the difference between the inductive device 1000 shown in fig. 1 is that the first connection element 1130A and the terminal 1112A of the first inductor 1100A are located on the same side, i.e., the upper side in the figure.

Referring back to fig. 1, in one embodiment, the second connecting member 1230 includes a first end 1232 and a second end 1234. The first end 1232 is connected to the terminal 1212 of the second coil located inside the inductive device 1000 and in the first region 2000. The second end 1234 is disposed outside the inductive device 1000, in other words, the end point 1212 of the second coil located inside can be pulled outside through the second connecting member 1230, so that the rest of the device can be connected to the second coil through the second end 1234 of the second connecting member 1230.

In another embodiment, the second inductor 1200 further includes a third connector 1240, wherein the third connector 1240 includes a first end 1242 and a second end 1244. The first end 1242 is used to connect to the terminal 1222 of the second coil located inside the inductive device 1000 and located in the second region 3000. The second end 1244 is disposed outside the inductive device 1000, in other words, the end 1222 of the second coil located inside can be pulled outside through the third connecting member 1240, so that the rest of the device can be connected with the second coil through the second end 1244 of the third connecting member 1240.

In yet another embodiment, the second link 1230 comprises a second annular link and the third link 1240 comprises a third annular link. The second and third annular connectors are disposed along the first and

second coils

1100 and 1200, respectively, in other words, the annular connectors are disposed along with the winding manner of the first and

second coils

1100 and 1200, and thus, they are annular.

In one embodiment, the second 1230 and third 1240 ring connectors span the first 1100 and second 1200 coils. For example, referring to the first area 2000, the second loop connector 1230 spans over both the first coil 1100 and the second coil 1200.

In another embodiment, the second annular connector 1230 and the third annular connector 1240 are symmetrical to each other with respect to the centerline 4000 of the inductive device 1000. Further, the second annular connector 1230 and the third annular connector 1240 are mirror images of each other about the centerline 4000.

In another embodiment, the inductive device 1000 further includes a central connection 1300, wherein the central connection 1300 includes a first end 1310 and a second end 1320. The first end 1310 is connected to the center of the first connector 1130. The second terminal 1320 is disposed outside, e.g., on the upper side of the drawing, the inductive device 1000. As shown, the central connection 1300 is located on a centerline 4000 of the inductive device 1000, and the centerline 4000 is located between the first region 2000 and the second region 3000. However, the present disclosure is not limited to the embodiment shown in fig. 1, and the central connecting member 1300 may have one end connected to the center of the first connecting member 1130 and the other end arranged toward the lower side in the drawing.

In one embodiment, the central connection 1300 spans the first coil 1100 and the second coil 1200. For example, referring to the centerline 4000 area, the central link 1300 spans both the first coil 1100 and the second coil 1200.

It should be noted that the structure of the inductive device 1000A shown in fig. 2 is substantially similar to that of the inductive device 1000 in fig. 1, and the second connector 1230A and the third connector 1240A in the embodiment in fig. 2 may be straight connectors, which are different from the ring configuration in fig. 1, except that the first connector 1130 in fig. 1 is different from the first connector 1130A in fig. 2. In addition, taking the

first areas

2000 and 2000A as an example, the winding manner of the central portion thereof is slightly different, and at the center of the first area 2000 in fig. 1, a portion of the first coil 1100 has two adjacent turns at the left half, and there is no such configuration at the center of fig. 2 in a reverse view.

Fig. 3 is a graph illustrating experimental data of an inductive device according to an embodiment of the present disclosure. The experimental data plot illustrates the quality factor (Q) and inductance of the inductive device at different frequencies. As shown in the figure, the curve C1 is a quality factor curve of the

first inductors

1100 and 1100A of the

inductive devices

1000 and 1000A of the present disclosure, and the curve C2 is an inductance curve of the

second inductors

1200 and 1200A of the inductive devices of the present disclosure. As can be seen from the experimental data in fig. 3, the quality factors of the first inductor and the second inductor of the inductor apparatus can reach about 9 and 7.5, respectively, and the inductance values of the first inductor and the second inductor are 3.3nH and 2.4nH, respectively, and the K value can reach 0.81. Therefore, the efficiency of the inductance device can be improved by symmetrically designing the two inductors of the inductance device. However, the present disclosure is not limited to the above-mentioned values, and those skilled in the art can adjust the above-mentioned values according to actual requirements to achieve the best performance.

According to the embodiments of the present invention, the following advantages can be obtained. The embodiment of the present disclosure provides an inductance device, which has excellent performance due to the symmetrical design of two inductors of the inductance device, and solves the problem that the performance of a general inductor is often affected by the asymmetrical structure. In addition, compared with a common inductor, the inductor device improves the second harmonic, improves the gain by about 2dB and has a high quality factor (Q).

Although specific embodiments of the present disclosure have been described above, it should be understood that they have the ordinary skill in the art and various changes and modifications can be made therein without departing from the spirit and scope of the present disclosure, and therefore the scope of the present disclosure should be determined by the appended claims.

Claims

1. An inductive device, comprising:

a first inductor, comprising:

the inductor comprises a plurality of first coils, a plurality of second coils and a plurality of control circuits, wherein part of the first coils are wound in a first area, and part of the first coils are wound in a second area, and the first area and the second area are respectively positioned at two sides of the inductor; and

the first connecting piece is used for connecting the first coil positioned in the first area and the first coil positioned in the second area;

a second inductor, comprising:

the plurality of second coils are wound in the first area, and part of the second coils are wound in the second area; and

one end of the second connecting piece is used for connecting the end point of the second coil positioned at the inner side of the inductance device, and the other end of the second connecting piece is arranged at the outer side of the inductance device;

wherein the first inductor and the second inductor are symmetrical with each other with a center line of the inductor device as a reference;

the first connecting piece spans the first coils and the second coils which are arranged in a staggered mode to connect the first coils located in the first area and the first coils located in the second area, wherein the second connecting piece comprises a ring-shaped connecting piece, the ring-shaped connecting piece is arranged along with the winding mode of the first coils and the second coils, and the ring-shaped connecting piece spans the first coils and the second coils at the same time.

2. The inductive device of claim 1, wherein the first inductor and the second inductor are mirror images of each other about the centerline, wherein the centerline of the inductive device is located between the first region and the second region.

3. The inductive device of claim 1, wherein the first coils comprise:

a plurality of first sub-coils wound in the first region; and

and the plurality of second sub-coils are wound in the second area, wherein the plurality of first sub-coils are independent from the plurality of second sub-coils, and the first connecting piece is connected with the plurality of first sub-coils and the plurality of second sub-coils.

4. The inductive device of claim 1, wherein the first inductor further comprises a terminal, wherein the terminal of the first inductor and the other terminal of the second connector are respectively located at two sides of the inductive device, and wherein the first connector and the other terminal of the second connector are located at the same side.

5. The inductive device of claim 1, wherein the first inductor further comprises a terminal, wherein the terminal of the first inductor and the other terminal of the second connector are respectively located at two sides of the inductive device, and wherein the terminal of the first connector and the terminal of the first inductor are located at the same side.

6. The inductive device of claim 1, wherein the first coils and the second coils are arranged in a staggered manner in the first area or the second area, and wherein the first coils and the second coils are arranged in the first area or the second area in the manner of the first coils, the second coils, the first coils, and the second coils.

7. The inductive device of claim 1, wherein the loop connector is disposed along the first windings and the second windings, wherein the second connector comprises:

a first end for connecting an end of the second coil located inside the inductance device and in the first area; and

the second end is arranged at the outer side of the inductance device;

wherein the second inductor further comprises:

a third connector, comprising:

a first end for connecting an end of the second coil located inside the inductance device and in the second area; and

and the second end is arranged outside the inductance device.

8. The inductive device of claim 7, wherein the second connection comprises a second loop connection, and the third connection comprises a third loop connection, wherein the second loop connection and the third loop connection are respectively disposed along the first coils and the second coils, and wherein the second loop connection and the third loop connection span the first coils and the second coils.

9. The inductor apparatus of claim 8, wherein the second annular connector and the third annular connector are symmetrical with respect to the centerline of the inductor apparatus, and wherein the second annular connector and the third annular connector are mirror images of each other about the centerline.

10. The inductive device of claim 1, further comprising:

a central connection member, comprising:

the first end is connected to the center of the first connecting piece; and

the second end is arranged at the outer side of the inductance device;

the central connecting piece is located on the center line of the inductance device, and the center line of the inductance device is located between the first area and the second area.