Inductor device

1. An inductor device, comprising:

a first inductor, comprising:

a first trace, wherein the first trace comprises 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 comprises a second spiral trace, wherein the second spiral trace is disposed on the first layer and the second layer; and

a second connection member, disposed on a third layer, wherein the second spiral trace which is located on the second layer is coupled to the second spiral trace which is located on the first layer through the second connection member;

a second inductor, comprising:

a third trace; and

a fourth trace, wherein the third trace and the fourth trace are symmetrical to each other; and

a connection portion, configured to couple to the first inductor and the second inductor, wherein the connection portion comprises a first sub-connection portion, configured to couple to the second spiral trace which is located on the first layer and the first spiral trace which is located on the first layer.

2. The inductor device of 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 of claim 1 , wherein the first inductor further comprises:

a first input/output terminal, disposed on the first layer, and coupled to the first spiral trace which is located on the second layer, wherein the first spiral trace which is located on the second layer is coupled to the first spiral trace which is located on the first layer.

4. The inductor device of claim 3 , wherein the first inductor further comprises:

a first connection member, disposed on the third layer, wherein the first input/output terminal is coupled to the first spiral trace which is located on the second layer through the first connection member.

5. The inductor device of claim 1 , wherein the first inductor further comprises:

a second input/output terminal, disposed on the first layer, and coupled to the second spiral trace which is located on the first layer, wherein the second spiral trace which is located on the first layer is coupled to the second spiral trace which is located on the second layer.

6. The inductor device of claim 1 , wherein the second spiral trace which is located on the first layer and the fourth trace which is located on the second layer are overlapped to each other partially.

7. The inductor device of claim 1 , wherein the first spiral trace which is located on the first layer and the third trace which is located on the second layer are overlapped to each other partially.

8. The inductor device of claim 1 , wherein the second inductor further comprises:

a third input/output terminal, disposed on the third layer, and coupled to the fourth trace which is located on the second layer.

9. The inductor device of claim 8 , wherein the second inductor further comprises:

a fourth input/output terminal, disposed on the third layer, and coupled to the fourth trace which is located on the second layer.

10. The inductor device of claim 9 , wherein in a central area of the inductor device, the third trace which is located on the second layer is coupled to the fourth trace which is located on the second layer.

11. The inductor device of claim 10 , wherein the second inductor further comprises:

a center-tapped terminal, disposed on the third layer, and coupled to the third trace which is located on the second layer.

12. The inductor device of claim 11 , wherein the center-tapped terminal is disposed symmetrically to the third input/output terminal and the fourth input/output terminal on a basis of the central area.

13. The inductor device of claim 10 , wherein the connection portion further comprises:

a second sub-connection portion, disposed on the first layer, wherein in the central area of the inductor device, the third trace, which is located on the second layer, is coupled through the second sub-connection portion to the fourth trace, which is located on the second layer.

14. The inductor device of claim 1 , wherein the second inductor further comprises:

a third connection member, disposed on the third layer, wherein the fourth trace, which is located on the second layer, is coupled through the third connection member to the fourth trace, which is located on the second layer, in an interlaced manner.

15. The inductor device of claim 14 , wherein the second inductor further comprises:

a fourth connection member, disposed on the third layer, wherein the fourth trace, which is located on the second layer, is coupled through the fourth connection member to the fourth trace, which is located on the second layer, in an interlaced manner, wherein the third connection member and the fourth connection member are located at different sides of the second inductor.

16. The inductor device of claim 1 , wherein the second inductor further comprises:

a fifth connection member, disposed on the third layer, wherein the third trace, which is located on the second layer, is coupled through the fifth connection member to the third trace, which is located on the second layer, in an interlaced manner.

17. The inductor device of claim 16 , wherein the second inductor further comprises:

a sixth connection member, disposed on the third layer, wherein the third trace, which is located on the second layer, is coupled through the sixth connection member to the third trace, which is located on the second layer, in an interlaced manner, wherein the fifth connection member and the sixth connection member are located at different sides of the second inductor.