Abstract: A coil comprises a plurality of conductive layers, wherein a first conductive layer and a second conductive layer of the plurality of conductive layers each comprises a winding, and the first conductive layer is adjacent to the second conductive layer; wherein a first winding on the first conductive layer is electrically connected to a second winding on the second conductive layer, a first end of the first winding is connected to a first terminal electrode, and a second end on the second winding is connected to a second terminal electrode; wherein geometric central points of the first winding and the second winding are not spatially aligned.

Abstract: A multi-layer spiral inductor winding comprises a plurality of conductive layers, each conductive layer includes a plurality of conductive traces which can be a conductive spiral of at least a fraction of one turn; an additional conductive layer, wherein the additional conductive layer includes a conductive trace, wherein the conductive bridge connects a second terminal electrode of the inductor winding to a conductive trace of the plurality of conductive layers; and wherein a first terminal electrode of the inductor winding belongs to another conductive trace of the plurality of conductive layers; and each distinct conductive trace is electrically connected to each other in order to form a multi-layer spiral inductor winding. The winding may be prepared by adopting a semiconductor process or a PCB process. The winding has the benefits of a high inductance value, a reduced parasitic coupling capacitance, and a high Q-factor.

Abstract: A coil comprises a plurality of conductive layers, wherein a first conductive layer and a second conductive layer of the plurality of conductive layers each comprises a winding, and the first conductive layer is adjacent to the second conductive layer; wherein a first winding on the first conductive layer is electrically connected to a second winding on the second conductive layer, a first end of the first winding is connected to a first terminal electrode, and a second end on the second winding is connected to a second terminal electrode; wherein geometric central points of the first winding and the second winding are not spatially aligned.