Patent ID: 7839253

Claim:
A coupled inductor structure applied in a plurality of dielectric layers having at least one first dielectric layer and one second dielectric layer disposed under the first dielectric layer, the coupled inductor structure comprising: at least one first inductor element disposed on the first dielectric layer, the first inductor element at least comprising a first signal connecting port, a first bending segment connected to the first signal connecting port, a second bending segment connected to the first bending segment, a third bending segment connected to the second bending segment, a fourth bending segment connected to the third bending segment, a fifth bending segment connected to the fourth bending segment and a second signal connecting port connected to the fifth bending segment; and at least one second inductor element disposed on the second dielectric layer, the second inductor element at least comprising a first signal connecting port, a first bending segment connected to the first signal connecting port, a second bending segment connected to the first bending segment, a third bending segment connected to the second bending segment, a fourth bending segment connected to the third bending segment, a fifth bending segment connected to the fourth bending segment and a second signal connecting port connected to the fifth bending segment, wherein the second bending segment of the first inductor element has on the second dielectric layer a projection intersecting the second bending segment of the second inductor element, relative position of the first bending segment of the first inductor element to the first bending segment of the second inductor element is opposite to the relative position of the third bending segment of the first inductor element to the third bending segment of the second inductor element, the fourth bending segment of the first inductor element has on the second dielectric layer another projection intersecting the fourth bending segment of the second inductor element, and the relative position of the fifth bending segment of the first inductor element to the fifth bending segment of the second inductor element is same as the relative position of the first bending segment of the first inductor element to the first bending segment of the second inductor element.