Inductive device

Abstract

An inductance device includes a first inductance, a second inductance, and a connecting portion. The first inductance includes a first trace and a second trace. One of the first trace and the second trace has a spiral shape. The second inductance includes a third trace and a fourth trace. The third trace and the fourth trace are symmetrical to each other. The connecting portion is used to couple the first inductance and the second inductance.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an electronic device, and particularly relates to an inductor device. BACKGROUND

[0002] Various forms of inductors have their advantages and disadvantages, such as a spiral inductor, which has a high quality factor (Q value) and a large mutual inductance. For a spiral inductor / transformer, it is difficult to avoid the coupling effect with other devices. For a figure-eight inductor / transformer, it has two sets of coils, and the coupling between the two sets of coils occurs less frequently. However, the figure-eight inductor / transformer occupies a large area in the device. In addition, when the figure-eight inductor / transformer is designed as a symmetrical structure, the capacitance between the differential signals is greatly increased due to the traditional interleaved architecture. Therefore, the application range of the above-mentioned inductor / transformer is limited. SUMMARY

[0003] One technical embodiment of the present disclosure relates to an inductor device, which includes a first inductor, a second inductor, and a connection portion. The first inductor includes a first trace and a second trace. One of the first trace and the second trace is in a spiral shape. The second inductor includes a third trace and a fourth trace. The third trace and the fourth trace are symmetrical to each other. The connection portion is used to couple the first inductor and the second inductor.

[0004] Therefore, according to the technical content of the present disclosure, the configuration of the inductor device shown in the embodiment of the present disclosure can reduce the parasitic capacitance of the device. For the same side input signal of the symmetrical circuit differential signal, such as the positive voltage signal or the negative voltage signal (P or N), the design of the adjacent positive voltage signal (P and P adjacent) is used to avoid the capacitance value caused by the traditional adjacent positive and negative voltage signals (N / P adjacent). Therefore, the configuration of the inductor device shown in the embodiment of the present disclosure can also improve the quality factor (Q value) and the symmetry of the overall structure due to the reduction of the parasitic capacitance. BRIEF DESCRIPTION OF DRAWINGS

[0005] In order to make the above and other purposes, features, advantages and embodiments of the present disclosure more obvious and easy to understand, the following describes the drawings:

[0006] Figure 1 is a schematic diagram of an inductor device according to an embodiment of the present disclosure.

[0007] Figure 2 is a schematic diagram of an inductor device according to an embodiment of the present disclosure. Figure 1Partial structural diagram of an inductance device.

[0008] Figure 3 is shown according to an embodiment of the present disclosure. Figure 1 Partial structural diagram of an inductance device.

[0009] Figure 4 is shown according to an embodiment of the present disclosure. Figure 1 Partial structural diagram of an inductance device.

[0010] Figure 5 is a schematic diagram of an inductance device according to an embodiment of the present disclosure.

[0011] Figure 6 is a schematic diagram of an inductance device according to an embodiment of the present disclosure.

[0012] Figure 7 is a schematic diagram of an inductance device according to an embodiment of the present disclosure.

[0013] Figure 8 is a schematic diagram of experimental data of an inductance device according to an embodiment of the present disclosure.

[0014] In accordance with common practice the various features and elements described with reference to the drawings can not be drawn to scale, but are drawn as is deemed best for the purposes of illustration and description. In addition, like or similar elements / components are denoted by identical reference numerals throughout the various drawings.

[0015] Symbol explanation

[0016] 1000, 1000A-1000C: Inductance device

[0017] 1100, 1100A-1100C: First inductance

[0018] 1110, 1110A-1110C: First trace

[0019] 1111, 1111A-1111C: Partial trace

[0020] 1112, 1112A-1112C: Partial trace

[0021] 1120, 1120A-1120C: Second trace

[0022] 1121, 1121A-1121C: Partial trace

[0023] 1122, 1122A-1122C: Partial trace

[0024] 1130, 1130A-1130C: first input / output terminal

[0025] 1140, 1140A-1140C: connecting piece

[0026] 1150, 1150A-1150C: second input / output terminal

[0027] 1160, 1160A-1160C: connecting piece

[0028] 1200, 1200A-1200C: second inductor

[0029] 1210, 1210A-1210C: third trace

[0030] 1220, 1220A-1220C: fourth trace

[0031] 1230, 1230A-1230C: third input / output terminal

[0032] 1240, 1240A-1240C: connecting piece

[0033] 1250, 1250A-1250C: fourth input / output terminal

[0034] 1260, 1260A-1260C: connecting piece

[0035] 1270, 1270A-1270C: connecting piece

[0036] 1280, 1280A-1280C: center tap terminal

[0037] 1290, 1290A-1290C: connecting piece

[0038] 1300, 1300A-1300C: connecting portion

[0039] 1310, 1310A-1310C: first connecting portion

[0040] 1320, 1320A-1320C: second connecting portion

[0041] 1330, 1330A-1330C: connecting piece

[0042] A-L: node DETAILED DESCRIPTION

[0043] To make the description of this disclosure more detailed and complete, illustrative descriptions of implementation methods and specific embodiments of this disclosure are provided below; however, this is not the only form of implementing or utilizing the specific embodiments of this disclosure. The implementation methods cover features of multiple specific embodiments and method steps and their order for constructing and operating these specific embodiments. However, other specific embodiments may also be used to achieve the same or equivalent functions and order of steps.

[0044] Unless otherwise defined in this specification, the scientific and technical terms used herein have the same meaning as understood and commonly used by one of ordinary skill in the art to which this disclosure pertains. Furthermore, unless conflicting with the context, singular nouns used herein include their plural forms, and vice versa.

[0045] Figure 1 This is a schematic diagram illustrating an inductor device 1000 according to an embodiment of the present disclosure. As shown, the inductor device 1000 includes a first inductor 1100, a second inductor 1200, and a connecting portion 1300. The first inductor 1100 includes a first trace 1110 and a second trace 1120. The second inductor 1200 includes a third trace 1210 and a fourth trace 1220. As shown, the connecting portion 1300, located in the central region, can be used to couple the first inductor 1100 and the second inductor 1200.

[0046] In order to make Figure 1 The structure of the inductor 1000 shown is easy to understand; please refer to it as well. Figures 2 to 4 . Figures 2 to 4 An embodiment of this disclosure illustrates a method such as Figure 1 A partial structural schematic diagram of the inductor device 1000 is shown. Please refer to [link / reference]. Figure 2 In one embodiment, the shape of one of the portion of the first trace 1110, trace 1112, and the portion of the second trace 1120, trace 1121, may be spiral. For example, either the portion of trace 1112 or the portion of trace 1121 may be spiral, or both may be spiral.

[0047] Please see Figure 3 In one embodiment, the third trace 1210 and the fourth trace 1220 are symmetrical to each other. More specifically, the third trace 1210 and the fourth trace 1220 can be symmetrical to each other with reference to the central region of the inductor device 1000.

[0048] In one embodiment, Figure 2 Part of the structure of the inductor device 1000 shown is located on the first layer. Figure 3 Part of the structure of the inductor 1000 shown is located on the second layer, and Figure 4The partial structure of the inductance device 1000 shown is located in the third layer. For example, referring to Figure 2 , the partial wire 1112 of the first wire 1110, the partial wire 1121 of the second wire 1120, and the partial connection 1320 of the connection 1300 are located in the first layer.

[0049] Further, referring to Figure 3 , the partial wire 1111 of the first wire 1110, the partial wire 1122 of the second wire 1120, the third wire 1210, and the fourth wire 1220 are located in the second layer. In addition, referring to Figure 4 , the first connection 1310 of the connection 1300 is located in the third layer. In addition, Figure 4 The third layer shown also configures a plurality of connections 1140, 1160, 1240, 1260, 1270, 1290, input and output terminals 1230, 1250, and a central tap terminal 1280. The above structure will be described in detail later. As described above, all the structures of the inductance device 1000 of the present disclosure are configured in three layers. Compared with the existing inductance device which needs four layers to complete the configuration of all structures, the inductance device 1000 of the present disclosure can save area, volume, etc., and only three layers of structure are needed to complete, which is very convenient for circuit layout design.

[0050] In an embodiment, the first wire 1110 can be a first spiral wire 1110, which is disposed between the first layer and the second layer. For example, the partial wire 1112 of the first spiral wire 1110 is disposed on the first layer shown in Figure 2 , and the partial wire 1111 of the first spiral wire 1110 is disposed on the second layer shown in Figure 3 .

[0051] In another embodiment, the first inductance 1100 further includes a first input and output terminal 1130 and a first connection 1140. The first input and output terminal 1130 is disposed on the first layer shown in Figure 2 , and the first connection 1140 is disposed on the third layer shown in Figure 4 . On the connection structure, the node A of the first input and output terminal 1130 disposed on Figure 2 is coupled to the node A of the first connection 1140 disposed on Figure 4 , and the node B of the first connection 1140 is coupled to the node B of the partial wire 1111 of the first spiral wire 1110 disposed on Figure 3 . Then, the node C of the partial wire 1111 of the first spiral wire 1110 is coupled to the node C of the partial wire 1112 of the first spiral wire 1110 disposed on Figure 2 .

[0052] In one embodiment, the second trace 1120 may be a second spiral trace 1120, which is disposed on both the first and second layers. For example, a portion 1121 of the second spiral trace 1120 is disposed on... Figure 2 The first layer shown, and a portion of the second spiral trace 1120 trace 1122 is disposed on... Figure 3 The second layer is shown.

[0053] In another embodiment, the first inductor 1100 further includes a second input / output terminal 1150 and a second connector 1160. The second input / output terminal 1150 is disposed on... Figure 2 The first layer, and the second connector 1160 is disposed on Figure 4 The third layer. In the connection structure, it is set at... Figure 2 The second input / output terminal 1150 is coupled to the same location. Figure 2 The second spiral trace 1120 is a portion of trace 1121. Then, node D of the portion of trace 1121 of the second spiral trace 1120 is coupled to a location... Figure 3 The node D of the portion of the second spiral trace 1120 trace 1122. Then, the node E of the portion of the second spiral trace 1120 trace 1122 is coupled to the node set at... Figure 4 The second connector 1160 is at node E.

[0054] Next, node F of the second connector 1160 is coupled to the location set at... Figure 2 The second spiral trace 1120 is connected to node F of the portion of trace 1121. Then, the portion of trace 1120 is coupled to node G of the second spiral trace 1120. Figure 3 The node G of the connector 1330. Then, the node H of the connector 1330 is coupled to the node located at... Figure 4 The node H of the first connection part 1310 of the connection part 1300 is then coupled to the node I of the first connection part 1310 of the connection part 1300 to the part disposed on the Figure 2 The node I of part of the first spiral trace 1110, trace 1112.

[0055] In one embodiment, the second inductor 1200 further includes a third input / output terminal 1230 and a third connector 1240. The third input / output terminal 1230 is disposed on... Figure 4 The third layer, and the third connector 1240 is located at Figure 4 The third layer. In the connection structure, it is set at... Figure 4 The third input / output terminal 1230 is coupled to node J at the location set in Figure 3The node J of the fourth routing 1220 is then connected to the fourth routing 1220, which is also located on the second layer, via the third connector 1240.

[0056] In another embodiment, please refer to Figure 1 The second spiral trace 1120 located on the first layer partially overlaps with the fourth trace 1220 located on the second layer.

[0057] In one embodiment, the second inductor 1200 further includes a fourth input / output terminal 1250 and a fourth connector 1260. The fourth input / output terminal 1250 is disposed on... Figure 4 The third layer, and the fourth connector 1260 is located at Figure 4 The third layer. In the connection structure, it is set at... Figure 4 The fourth input / output terminal 1250 is coupled to node K in the configuration. Figure 3 The node K of the fourth trace 1220 is then interleaved with the fourth trace 1220, which is also located on the second layer, via the fourth connector 1260. In another embodiment, the third connector 1240 and the fourth connector 1260 are located on different sides of the second inductor 1200. For example, the third connector 1240 and the fourth connector 1260 are located on the lower and upper sides of the second inductor 1200, respectively.

[0058] In another embodiment, a [structure] is disposed in the central region of the inductor 1000 (e.g., the center of the structure shown in the figure). Figure 3 The third trace 1210 on the second layer is coupled to the fourth trace 1220, which is also located on the second layer.

[0059] In one embodiment, the second inductor 1200 further includes a fifth connector 1270, which is disposed on... Figure 4 The third layer. Located on the connection structure, at... Figure 3 The third route 1210 passes through Figure 4 The fifth connector 1270 is interleaved with the third trace 1210, which is also located on the second layer.

[0060] In another embodiment, please refer to Figure 1 A portion of the first spiral trace 1110 located on the first layer, trace 1112, partially overlaps with the third trace 1210 located on the second layer.

[0061] In one embodiment, the second inductor 1200 further includes a center tap 1280, which is disposed at... Figure 4 The third layer. Located on the connection structure, at... Figure 4 The central tap 1280 is coupled to node L located at the point where Figure 3The third path is node L at 1210.

[0062] In another embodiment, please refer to Figure 1 The central tap 1280 is symmetrically arranged with the third input / output terminal 1230 and the fourth input / output terminal 1250 based on the central region of the inductor 1000 (e.g., the center of the structure in the figure).

[0063] In one embodiment, the second inductor 1200 further includes a sixth connector 1290, which is disposed on... Figure 4 The third layer. Located on the connection structure, at... Figure 3 The third route 1210 passes through Figure 4 The sixth connector 1290 is alternately coupled to the third trace 1210, which is also located on the second layer. In another embodiment, the fifth connector 1270 and the sixth connector 1290 are located on different sides of the second inductor 1200. For example, the fifth connector 1270 and the sixth connector 1290 are located on the upper and lower sides of the second inductor 1200, respectively.

[0064] In another embodiment, the connecting portion 1300 further includes a second connecting portion 1320, which is disposed on... Figure 2 The first layer. See also Figure 1 In the central region of the inductor device 1000 (e.g., the center of the structure in the figure), the third trace 1210 located on the second layer is coupled to the fourth trace 1220 located on the second layer via the second connection portion 1320. It should be noted that this disclosure does not... Figures 1 to 4 The embodiments shown are limited and are merely illustrative of one implementation of this disclosure.

[0065] Figure 5 This is a schematic diagram illustrating an inductor device 1000A according to an embodiment of this disclosure. Compared to Figure 1 The inductor device 1000 shown is... Figure 5 The structure and configuration of the 1000A inductor are slightly different, as detailed below.

[0066] Please see Figure 5 The structure between the first trace 1110A and the third trace 1210A of the inductor device 1000A is adjusted so that the fifth connector 1270A in the upper left corner of the figure can be set in the first layer, and the sixth connector 1290A in the lower left corner of the figure can be set in the first layer.

[0067] In addition, the structure between the second trace 1120A and the fourth trace 1220A of the inductance device 1000A is adjusted so that the fourth connection 1260A at the upper right corner of the figure can be disposed on the first layer, and so that the third connection 1240A at the lower right corner of the figure can be disposed on the first layer. It should be noted that, in the embodiment of Figure 5 , the element numbers are similar to those in Figure 1 , and have similar structural and electrical operating characteristics. For the sake of brevity, these will not be described again. In addition, the present disclosure is not limited to the embodiment shown in Figure 5 , which is merely used to exemplarily show one of the implementation manners of the present disclosure.

[0068] Figure 6 is a schematic diagram of an inductance device 1000B according to an embodiment of the present disclosure. Compared with the inductance device 1000 shown in Figure 1 , Figure 6 , the structural configuration of the inductance device 1000B is slightly different, and the details will be described later.

[0069] Referring to Figure 6 , the structure between the first trace 1110B and the third trace 1210B of the inductance device 1000B is adjusted so that the fifth connection 1270B at the upper left corner of the figure can be disposed on the first layer, and so that the sixth connection 1290B at the lower left corner of the figure can be disposed on the first layer.

[0070] In addition, the structure between the second trace 1120B and the fourth trace 1220B of the inductance device 1000B is adjusted so that the fourth connection 1260B at the upper right corner of the figure can be disposed on the first layer, and so that the third connection 1240B at the lower right corner of the figure can be disposed on the first layer. It should be noted that, in the embodiment of Figure 6 , the element numbers are similar to those in Figure 1 , and have similar structural and electrical operating characteristics. For the sake of brevity, these will not be described again. In addition, the present disclosure is not limited to the embodiment shown in Figure 6 , which is merely used to exemplarily show one of the implementation manners of the present disclosure.

[0071] Figure 7 is a schematic diagram of an inductance device 1000C according to an embodiment of the present disclosure. Compared with the inductance device 1000 shown in Figure 1 , Figure 7 , the structural configuration of the inductance device 1000C is slightly different, and the details will be described later.

[0072] Referring to Figure 7The structure between the first trace 1110C and the third trace 1210C of the inductor device 1000C is adjusted so that the fifth connection 1270C at the upper left corner of the figure can be disposed on the first layer, and the sixth connection 1290C at the lower left corner of the figure can be disposed on the first layer.

[0073] In addition, the structure between the second trace 1120C and the fourth trace 1220C of the inductor device 1000C is adjusted so that the fourth connection 1260C at the upper right corner of the figure can be disposed on the first layer, and the third connection 1240C at the lower right corner of the figure can be disposed on the first layer.

[0074] Furthermore, the input / output terminals 1230C, 1250C of the inductor device 1000C can be disposed on the first layer, and the input / output terminals 1230C, 1250C are coupled to the third trace 1210C. In addition, the center tap terminal 1280C of the inductor device 1000C can be disposed on the first layer, and the center tap terminal 1280C is coupled to the fourth trace 1220C. It is noted that in the embodiment of Figure 7 , the element numbers similar to those in Figure 1 have similar structures and electrical operating characteristics. For the sake of brevity, they are not described herein. In addition, the present disclosure is not limited to the embodiment shown in Figure 7 , which is merely used to exemplarily show one of the implementations of the present disclosure.

[0075] Figure 8 is an experimental data diagram of an inductor device according to an embodiment of the present disclosure. As shown in the figure, the experimental curves of the quality factors of inductor devices not using the present disclosure are C1, C2, respectively, and the experimental curves of the quality factors of inductor devices using the present disclosure are C3, C4, respectively. As can be seen from the figure, the inductor devices using the present disclosure have better quality factors.

[0076] Although the specific embodiments of the present disclosure are disclosed in the above embodiments, they are not used to limit the present disclosure. Those skilled in the art to which the present disclosure belongs can make various modifications and modifications to the present disclosure without departing from the principles and concepts of the present disclosure. Therefore, the protection scope of the present disclosure should be defined by the appended claims.

Claims

1. An inductor device, comprising: A first inductor, comprising: A first trace, wherein the first trace includes a first spiral trace, wherein the first spiral trace is disposed on a first layer and a second layer; A second trace, wherein the second trace includes a second spiral trace, wherein the second spiral trace is disposed on the first layer and the second layer; and A second connector is disposed on a third layer, wherein the second spiral trace located on the second layer is coupled to the second spiral trace located on the first layer through the second connector; A second inductor, comprising: The third routing line; and A fourth routing line, wherein the third routing line and the fourth routing line are symmetrical to each other; and A connection portion for coupling the first inductor and the second inductor, wherein the connection portion includes: a primary connection portion for coupling the second spiral trace located on the first layer and the first spiral trace located on the first layer.

2. The inductor device as claimed in claim 1, wherein the first inductor is located on the first layer and the second layer, and the second inductor is located on the second layer, and the connection portion is located on the first layer and the third layer.

3. The inductor device as described in claim 2, The first inductor also includes: A first input / output terminal is disposed on the first layer and coupled to the first spiral trace located on the second layer, and further coupled to the first spiral trace on the first layer by the first spiral trace located on the second layer; and A first connector is disposed on the third layer, wherein the first input / output terminal is coupled to the first spiral trace located on the second layer via the first connector.

4. The inductor device as described in claim 3, The first inductor also includes: A second input / output terminal is disposed on the first layer and coupled to the second spiral trace located on the first layer, and then coupled to the second spiral trace on the second layer by the second spiral trace located on the first layer.

5. The inductor device of claim 4, wherein the second inductor further comprises: A third input / output terminal is located on the third layer and coupled to the fourth trace located on the second layer; and A third connector is disposed on the third layer, wherein the fourth trace located on the second layer is alternately coupled to the fourth trace located on the second layer through the third connector.

6. The inductor device of claim 5, wherein the second spiral trace located on the first layer partially overlaps with the fourth trace located on the second layer.

7. The inductor device of claim 6, wherein the second inductor further comprises: A fourth input / output terminal is located on the third layer and coupled to the fourth trace located on the second layer; and A fourth connector is disposed on the third layer, wherein the fourth trace located on the second layer is alternately coupled to the fourth trace located on the second layer through the fourth connector, wherein the third connector and the fourth connector are located on different sides of the second inductor; In a central region of the inductor, the third trace on the second layer is coupled to the fourth trace on the second layer.

8. The inductor device of claim 7, wherein the second inductor further comprises: A fifth connector is disposed on the third layer, wherein the third trace located on the second layer is interleaved with the third trace located on the second layer through the fifth connector, wherein the first spiral trace located on the first layer partially overlaps with the third trace located on the second layer.

9. The inductor device of claim 8, wherein the second inductor further comprises: A central tap is disposed on the third layer and coupled to the third trace located on the second layer, wherein the central tap is symmetrically configured with respect to the central region, the third input / output terminal and the fourth input / output terminal.

10. The inductor device of claim 9, wherein the second inductor further comprises: A sixth connector is disposed on the third layer, wherein the third trace located on the second layer is alternately coupled to the third trace located on the second layer through the sixth connector, wherein the fifth connector and the sixth connector are located on different sides of the second inductor; The connecting part also includes: A second connection is provided on the first layer, wherein in the central region of the inductor, the third trace located on the second layer is coupled to the fourth trace located on the second layer through the second connection.

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