CN111863399A - Double figure eight inductance device - Google Patents

Abstract

The present disclosure provides a double-splayed inductor device, which includes a first splayed coil, a second splayed coil and a connecting structure. The first splayed coil comprises a first connection end point; the second splayed coil comprises a second connecting end point, wherein the first splayed coil and the second splayed coil are arranged on two sides of the first imaginary axis side by side; the connection structure is configured to be electrically coupled with the first connection end point and the second connection end point, so that the first splayed coil and the second splayed coil form a communication loop; wherein the first splayed coil and the second splayed coil comprise a loop.

Description

Double figure eight inductance device

technical field

The present disclosure relates to a coil arrangement, and in particular to an inductive coil arrangement.

Background technique

Generally, 8-shaped inductive devices often have their performance affected due to structural asymmetry. In detail, if only the two coils of a single figure-eight inductance device are not completely symmetrical in the overall structure, the magnetic field will be offset in each coil, which will affect the induction of magnetic fields in all directions by the inductance device and cancel each other out. efficacy.

In view of this, there are still many problems in the current inductive device, and the improvement of performance also needs to be improved, which is an urgent problem to be solved for those skilled in the art.

SUMMARY OF THE INVENTION

According to an embodiment of the present disclosure, a double figure-eight inductor device is disclosed, which includes a first figure-eight coil, a second figure-eight coil, and a connection structure. The first figure-eight coil includes a first connection terminal; the second figure-eight coil includes a second connection terminal, wherein the first figure-eight coil and the second figure-eight coil are arranged side by side on both sides of the first imaginary axis; the connection structure is configured to electrically The first connection terminal and the second connection terminal are sexually coupled, so that the first figure-eight coil and the second figure-eight coil form a communication loop; wherein the first figure-eight coil and the second figure-eight coil comprise a loop.

According to another embodiment, a double figure-eight inductor device is disclosed, which includes a first figure-eight coil, a second figure-eight coil and a connection structure. The first figure-eight coil includes a first connection terminal; the second figure-eight coil includes a second connection terminal, wherein the first figure-eight coil and the second figure-eight coil are arranged side by side on both sides of the first imaginary axis; the connection structure is configured to electrically The first connection terminal and the second connection terminal are sexually coupled; wherein the first figure-eight coil and the second figure-eight coil comprise a plurality of loops, and the first figure-eight coil and the second figure-eight coil form a communication loop based on the loops .

Description of drawings

FIG. 1 is a schematic diagram of a double figure-eight inductor device according to some embodiments of the present disclosure;

FIG. 2 is a schematic diagram of a double figure-eight inductor device according to other embodiments of the present disclosure;

3 is a schematic diagram of a double figure-eight inductor device according to other embodiments of the present disclosure;

4 is a schematic diagram illustrating a double figure-eight inductor device according to other embodiments of the present disclosure;

FIG. 5 is a schematic diagram of a double-figure-eight inductor device according to other embodiments of the present disclosure;

6 is a schematic diagram of a double figure-eight inductor device according to other embodiments of the present disclosure;

7 is a schematic diagram of a double figure-eight inductor device according to other embodiments of the present disclosure;

FIG. 8 is a graph showing experimental data operated by the double figure-eight inductor device of FIGS. 5 and 6 .

【Symbol Description】

In order to make the above and other objects, features, advantages and embodiments of the present disclosure more clearly understood, the descriptions of the appended symbols are as follows:

100～700 double figure eight inductance device

110, 210, 410, 510, 610, 710 first figure eight coil

113, 213, 413, 513, 613, 713 first helical coil

115, 215, 415, 515, 615, 715 second helical coil

117, 517 first connection structure

117a, 127a, 517a, 527a first connector

117b, 127b, 517b, 527b second connector

120, 220, 420, 520, 620, 720 second figure eight coil

123, 223, 423, 523, 623, 723 third helical coil

125, 225, 425, 525, 625, 725 fourth helical coil

127, 527 second connection structure

130 connection structure

130a First connection endpoint

130b second connection endpoint

130c first connector

130d second connector

141, 143 first voltage input and output terminals

145 second voltage input and output terminal

A, B imaginary axis

L1 innermost ring

L2 outermost ring

M1 first metal layer

M2 second metal layer

C1, C2, Q1, Q1 curves

Detailed ways

The following disclosure provides many different embodiments or examples for implementing different features of the invention. This disclosure repeats reference numerals and/or letters in each instance. This repetition is for the purpose of brevity and clarity, and does not in itself indicate a relationship between the various embodiments and/or configurations discussed.

Please refer to FIG. 1 , which is a schematic diagram of a double figure-eight inductor device 100 according to some embodiments of the present disclosure. As shown in FIG. 1 , the double figure-eight inductor device 100 includes a first figure-eight coil 110 , a second figure-eight coil 120 and a connection structure 130 . The first figure-eight coil 110 and the second figure-eight coil 120 are arranged side by side on both sides of the imaginary axis A, respectively. In another embodiment, the first figure-eight coil 110 and the second figure-eight coil 120 are coils of the same size, so that the double figure-eight inductance device 100 is approximately symmetrical.

The connecting structure 130 includes a first connecting member 130c and a second connecting member 130d. The first connector 130c is located on the first metal layer. The second connecting member 130d is located at the second metal layer, wherein the second metal layer is different from the first metal layer. The first connector 130c connects the first figure-eight coil 110 and the second figure-eight coil 120 . In one embodiment, the first connecting member 130c, the first figure-eight coil 110 and the second figure-eight coil 120 may also be integrally formed.

The first figure-eight coil 110 includes a first connection terminal 130a. The second figure-eight coil 120 includes a second connection terminal 130b. The second connector 130d spans the first connector 130c. The second connecting member 130d is coupled to the first connection terminal 130a of the first figure-eight coil 110 and the second connection terminal 130b of the second figure-eight coil 120, so that the first figure-eight coil 110 and the second figure-eight coil 120 form a communication loop .

The double figure-eight inductor device 100 includes first voltage input/output terminals 141 and 143 and a second voltage input/output terminal 145 . The first voltage I/O terminals 141 and 143 and the second voltage I/O terminal 145 are respectively disposed on the first figure-of-eight coil 110 and the second figure-of-eight coil 120 on both sides of the imaginary axis A, so that the first I/O terminals 141 and 143 The second voltage I/O terminal 145 is disposed on one side of the double 8-shaped inductance device 100 in four directions (for example, the first I/O terminals 141, 143 and the second voltage I/O terminal 145 are set on two sides in FIG. 1 . The left side of the figure-eight inductor device 100). In one embodiment, the first voltage input/output terminals 141 and 143 are arranged on the first figure-eight coil 110 , and the second voltage input/output terminal 145 is arranged at the second figure-eight coil 120 .

In one embodiment, the first voltage I/O terminal 141 is connected to the voltage input positive terminal (P port), the first voltage I/O terminal 143 is connected to the voltage output negative terminal (N port), and the second voltage I/O terminal 145 is connected to the center tap Center-tapped port.

As shown in FIG. 1 , the first figure-eight coil 110 includes a first helical coil 113 and a second helical coil 115 . The first helical coil 113 and the second helical coil 115 are arranged side by side on both sides of an imaginary axis B, wherein the imaginary axis B is perpendicular to the imaginary axis A. The first helical coil 113 and the second helical coil 115 are electrically coupled to each other through the first connection structure 117 . In one embodiment, the first connection structure 117 includes a first connection member 117a on the first metal layer, and a second connection member 117b on the second metal layer. The second connecting piece 117b spans to the first connecting piece 117a. Therefore, the first helical coil 113 and the second helical coil 115 form a figure-eight circuit.

Similarly, the second figure-eight coil 120 includes a third helical coil 123 and a fourth helical coil 125 . The third helical coil 123 and the fourth helical coil 125 are arranged on both sides of the virtual axis B side by side. The third helical coil 123 and the fourth helical coil 125 are electrically coupled to each other through the second connection structure 127 . In one embodiment, the second connecting structure 127 includes a first connecting member 127a on the first metal layer, and a second connecting member 127b on the second metal layer. The second connector 127b spans the first connector 127a. Therefore, the third helical coil 123 and the fourth helical coil 125 form a figure-eight circuit.

In one embodiment, among these helical coils, the current directions of adjacent helical coils are opposite to each other. For example, when the current direction of the first helical coil 113 is counterclockwise, the current direction of the second helical coil 115 and the third helical coil 123 is clockwise, and the current direction of the fourth helical coil 125 is Counterclockwise. vice versa.

In one embodiment, the double figure-eight inductor device 100 includes one loop. The double figure eight inductance device 100 is approximately symmetrical based on the imaginary axis A, and the current direction in the first figure eight coil 110 and the current direction in the second figure eight coil 120 are approximately symmetrical to each other based on the imaginary axis A.

Please refer to FIG. 2 , which is a schematic diagram of a double figure-eight inductor device 200 according to other embodiments of the present disclosure. Compared to FIG. 1 , FIG. 2 shows a double figure-eight inductor device 200 with two loops. In the following paragraphs, the same elements are denoted by the same reference numerals and will not be repeated. The double figure-eight inductor device 200 includes a first figure-eight coil 210 and a second figure-eight coil 220 . The first figure-eight coil 210 includes a first helical coil 213 and a second helical coil 215 . The second figure-eight coil 220 includes a third helical coil 223 and a fourth helical coil 225 .

In the embodiment in which the helical coil has a plurality of loops, at least one first voltage input/output terminal 141 , 143 and at least one second voltage input/output terminal 145 are disposed on the innermost or outermost of the loops lock up. For example, as shown in FIG. 2 , at least one first voltage I/O terminal 141 , 143 and at least one second voltage I/O terminal 145 are in the innermost circle L1 of these loops, and span other outer loops to connect with other circuits.

On the other hand, please refer to FIG. 3 , which is a schematic diagram of a double-figure-eight inductor device 300 according to other embodiments of the present disclosure. Compared with FIG. 2 , the first voltage I/O terminals 141 , 143 and the second voltage I/O terminal 145 in FIG. 3 are in the outermost circle L2 of these loops.

Please refer to FIG. 4 , which is a schematic diagram of a double figure-eight inductor device 400 according to other embodiments of the present disclosure. Compared to FIG. 2 , which is a double-figure-eight inductor device 200 having two loops, FIG. 4 shows a double-figure-eight-shaped inductor device 400 having three loops. The double figure-eight inductor device 400 includes a first figure-eight coil 410 and a second figure-eight coil 420 . The first figure-eight coil 410 includes a first helical coil 413 and a second helical coil 415 . The second figure-eight coil 420 includes a third helical coil 423 and a fourth helical coil 425 .

Please refer to FIG. 5 , which is a schematic diagram of a double figure-eight inductor device 500 according to other embodiments of the present disclosure. The double figure-eight inductor device 500 includes a first figure-eight coil 510 and a second figure-eight coil 520 . The first figure-eight coil 510 includes a first helical coil 513 and a second helical coil 515 . The second figure-eight coil 520 includes a third helical coil 523 and a fourth helical coil 525 .

Compared to FIG. 2 , the first helical coil 513 and the second helical coil 515 of FIG. 5 are electrically coupled to each other through the first connection structure 517 . In one embodiment, the first connection structure 517 includes at least one first connection element 517a located in the first metal layer, and at least one second connection element 517b located in the second metal layer. At least one second connector 517b spans at least one first connector 517a.

Similarly, the third helical coil 523 and the fourth helical coil 525 are electrically coupled to each other via the second connection structure 527 . In one embodiment, the second connection structure 527 includes at least one first connection element 527a located in the first metal layer, and at least one second connection element 527b located in the second metal layer. At least one second connector 527b spans at least one first connector 527a.

In some embodiments, the number of the first connector 517a, 527a and the second connector 517b, 527b is 1 or 2.

Please refer to FIG. 6 , which is a schematic diagram of a double figure-eight inductor device 600 according to other embodiments of the present disclosure. Compared to FIG. 5 , FIG. 6 shows a double figure-eight inductor device 600 with three loops. The double figure-eight inductor device 600 includes a first figure-eight coil 610 and a second figure-eight coil 620 . The first figure-eight coil 610 includes a first helical coil 613 and a second helical coil 615 . The second figure-eight coil 620 includes a third helical coil 623 and a fourth helical coil 625 . In FIG. 6 , the first I/O terminals 141 and 143 and the second voltage I/O terminal 145 are arranged on different figure-eight coils on the same side of one of the four directions of the double figure-eight inductance device 600 (for example, the first output The input terminals 141 , 143 and the second voltage output input terminal 145 are disposed on the left side of the double-figure-eight inductor device 600 in FIG. 6 ).

Please refer to FIG. 7 , which is a schematic diagram of a double-figure-eight inductor device 700 with three loops according to other embodiments of the present disclosure. The double figure-eight inductor device 700 includes a first figure-eight coil 710 and a second figure-eight coil 720 . The first figure-eight coil 710 includes a first helical coil 713 and a second helical coil 715 . The second figure-eight coil 720 includes a third helical coil 723 and a fourth helical coil 725 .

Compared with FIG. 6 , FIG. 7 is a schematic diagram illustrating that the first I/O terminals 141 and 143 and the second voltage I/O terminal 145 are disposed in the same spiral coil. For example, the first I/O terminals 141 and 143 and the second voltage I/O terminal 145 are disposed on the first helical coil 713 . In fact, the first input/output terminals 141 and 143 and the second voltage input/output terminal 145 can be arranged on the same helical coil other than the first helical coil 713 according to the winding manner of the helical coil. It is limited to set the first I/O terminals 141 and 143 and the second voltage I/O terminal 145 on the first helical coil 713 .

In FIG. 7 , the first voltage input and output terminals 141 and 143 are located at the outermost circle of the first helical coil 713 and are located at the first metal layer M1 . The second voltage input/output terminal 145 is located at the innermost circle of the first helical coil 713 and is located at the second metal layer M2. The second voltage I/O terminal 145 is connected to the voltage terminal across other outer loops.

Therefore, the double figure-eight inductor devices 100 - 700 of the present disclosure have more flexibility in configuring the first voltage input/output terminals 141 and 143 and the second voltage input/output terminal 145 .

Please refer to FIG. 8 , which is a graph of experimental data operated by the double figure-eight inductor devices 500 and 600 of FIGS. 5 and 6 . This experimental data graph illustrates the quality factor (Q value) and inductance value of the figure-eight inductive coil devices 500 and 600 at different frequencies. The curves C1 and C2 are the quality factor curves of the two-loop and three-loop figure-eight inductive coil devices, respectively. As shown in FIG. 8 , when the two-loop and three-loop figure-eight inductive coil devices operate at frequencies, such as 5 GHz and 7 GHz, respectively, the quality factors are close to 8 and 10, respectively. In addition, the inductance values of the two (curves Q1 and Q2) are very close. Therefore, the structural configuration of the figure-eight inductive coil device proposed in the present disclosure can reduce noise and improve inductance efficiency.

In addition, the symmetrical structure configuration of the figure-eight inductive coil device proposed in the present disclosure can improve the induction coupling effect of the four sides, not only improve the circuit operation performance, but also reduce the size of the designed circuit.

Claims (10)

1. A double-splayed inductive device, comprising:

a first splayed coil including a first connection terminal;

a second splayed coil including a second connection end point, wherein the first splayed coil and the second splayed coil are arranged side by side on two sides of a first imaginary axis; and

A connection structure configured to electrically couple the first connection terminal and the second connection terminal, so that the first splayed coil and the second splayed coil form a communication loop;

wherein the first splayed coil and the second splayed coil comprise a loop.

2. The double-splayed inductor device according to claim 1, further comprising at least one first voltage input/output terminal and at least one second voltage input/output terminal, wherein the at least one first voltage input/output terminal and the at least one second voltage input/output terminal are respectively disposed on the first splayed coil and the second splayed coil with reference to the first imaginary axis, and a direction of a current in the first splayed coil and a direction of a current in the second splayed coil are approximately symmetrical to each other with reference to the first imaginary axis.

3. The double-splayed inductance device of claim 1, wherein the connection structure comprises a first connection element on a first metal layer and a second connection element on a second metal layer, wherein the second connection element crosses over the first connection element, and the second connection element couples the first connection end of the first splayed coil and the second connection end of the second splayed coil.

4. A double-splayed inductive device, comprising:

a first splayed coil including a first connection terminal;

a second splayed coil including a second connection end point, wherein the first splayed coil and the second splayed coil are arranged side by side on two sides of a first imaginary axis; and

a connection structure configured to electrically couple the first connection terminal and the second connection terminal;

wherein the first splayed coil and the second splayed coil include a plurality of loops, and the first splayed coil and the second splayed coil form a communication loop based on the loops.

5. The dual-splay inductive device of claim 4, wherein the first splay coil further comprises a first helical coil and a second helical coil electrically coupled to each other via a first connection structure, wherein the first connection terminal is disposed on the first helical coil, and the second splay coil further comprises a third helical coil and a fourth helical coil electrically coupled to each other via a second connection structure, wherein the second connection terminal is disposed on the third helical coil.

6. The double-figure-eight inductor apparatus according to claim 5, wherein the first helical coil and the second helical coil are disposed side by side on both sides of a second imaginary axis, wherein the first imaginary axis is perpendicular to the second imaginary axis, and the third helical coil and the fourth helical coil are disposed side by side on both sides of a second imaginary axis, wherein the first imaginary axis is perpendicular to the second imaginary axis.

7. The dual splay inductance device according to claim 5, wherein a direction of current flow in the first helical coil is opposite to a direction of current flow in the second helical coil, and a direction of current flow in the third helical coil is opposite to a direction of current flow in the fourth helical coil, and the first splay coil further comprises a first helical coil and a second helical coil electrically coupled to each other via a first connection structure, the second splay coil further comprises a third helical coil and a fourth helical coil electrically coupled to each other via a second connection structure, wherein a direction of current flow in the first helical coil is opposite to a direction of current flow in the third helical coil and a direction of current flow in the second helical coil is opposite to a direction of current flow in the fourth helical coil.

8. The double-splayed inductor device according to claim 4, further comprising at least one first voltage input/output terminal and at least one second voltage input/output terminal, wherein the at least one first voltage input/output terminal and the at least one second voltage input/output terminal are respectively disposed on the first splayed coil and the second splayed coil, the at least one first voltage input/output terminal and the at least one second voltage input/output terminal are coupled to the innermost circles of the loops, and the at least one first voltage input/output terminal and the at least one second voltage input/output terminal are coupled to the outermost circles of the loops.

9. The double-splayed inductance device of claim 4, wherein the connection structure comprises a first connection element on a first metal layer and a second connection element on a second metal layer, wherein the second connection element crosses over the first connection element, and the second connection element couples the first connection end of the first splayed coil and the second connection end of the second splayed coil.

10. The double-figure-eight inductor apparatus according to claim 5, wherein the first connection structure comprises at least one first connection element on a first metal layer and at least one second connection element on a second metal layer, wherein the at least one second connection element spans the at least one first connection element, and the second connection structure comprises at least one first connection element on a first metal layer and at least one second connection element on a second metal layer, wherein the at least one second connection element spans the at least one first connection element.

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