An inductor includes a body including a plurality of insulating layers and a plurality of coil patterns are disposed on each of the plurality of insulating layers, and first and second external electrodes disposed on an external surface of the body. The plurality of coil patterns are connected to each other by coil connecting portions and both end portions thereof are electrically connected to the first and second external electrodes through coil lead portions, respectively, to form a coil. The plurality of coil patterns include coil patterns disposed on an outer portion of the body and coil patterns disposed on an inner portion of the body, the coil patterns disposed on the inner portion of the body include first coil patterns electrically connected in parallel, and at least one of the first coil patterns includes an internal side portion having a shape different from shapes of remaining coil patterns.

A transformer comprising a primary winding and a secondary winding. The primary winding has N.sub.2 number turns and having a first terminal and a second terminal. The secondary winding has having N.sub.1 fractional portions, which together form a full turn, are in close proximity to the primary winding to establish coupling between the primary winding and the N.sub.1 fractional coil portions, the transformer turn ratio from the primary winding to the secondary winding is N.sub.2:(N.sub.3/N.sub.1) where N.sub.2 is an integer equal to or greater than 1, N.sub.1 is an integer greater than or equal to 2, and N.sub.3 is an integer greater than or equal to 1. Also disclosed is a stacked integrated transformer having a primary winding and secondary winding of which one or both have a waterfall structure and a portion of which functions as a ground connected shield between the secondary winding and the primary winding.

A coil electronic component includes a body including a laminate structure including a plurality of coil layers, and external electrodes disposed externally on the body. Each of the plurality of coil layers includes an insulating layer, a base pattern, and a coil pattern disposed on the base pattern, and a conductive via connecting the coil pattern to an adjacent coil layer, and the base pattern includes an intermetallic compound of Cu and Sn, and the coil pattern includes a Cu component.

A coil component includes a multilayer body in which a plurality of resin insulating layers are laminated in a lamination direction and coil conductive layers disposed inside the multilayer body. The plurality of resin insulating layers includes non-photosensitive first resin insulating layers and photosensitive second resin insulating layers. The multilayer body has a section where the first resin insulating layers and the second resin insulating layers are alternately laminated.

A coil component includes coil portions spaced apart from each other; and a body having a first core and a second core, spaced apart from the first core, wherein the coil portions include a first coiled portion and a second coiled portion that form at least one turn about the first and second cores, respectively, and a first extension portion and a second extension portion extending from the first and second coiled portions, respectively, and each surround the first and second cores. The body further comprises spacing portions, facing each other, defined between the coiled portions and spaced apart from the first and second cores. In the first and second extension portions, a line width of each of adjacent regions adjacent to the spacing portions is greater than a line width of a region except the adjacent regions.

An inductor and a method of making an inductor. The inductor includes a stack of dielectric layers. The inductor also includes a plurality of metal levels comprising patterned metallic features of the inductor. Each metal level is located at an interface between adjacent dielectric layers in the stack. The patterned metallic features include a first plurality of inductor windings arranged in a substantially flat spiral in one of the metal levels. The patterned metallic features also include a second plurality of inductor windings in which each winding is located in a respective one of the plurality of metal levels. The first plurality of windings is connected in series with the second plurality of windings.

RFID devices comprising (i) a transponder chip module (TCM, 1410) having an RFIC chip (IC) and a module antenna (MA), and (ii) a coupling frame (CF) having an electrical discontinuity comprising a slit (S) or non-conductive stripe (NCS). The coupling frame may be disposed closely adjacent the transponder chip module so that the slit overlaps the module antenna. The RFID device may be a payment object such as a jewelry item having a metal component modified with a slit (S) to function as a coupling frame. The coupling frame may be moved (such as rotated) to position the slit to selectively overlap the module antennas (MA) of one or more transponder chip modules (TCM-1, TCM-2) disposed in the payment object, thereby selectively enhancing (including enabling) contactless communication between a given transponder chip module in the payment object and another RFID device such as an external contactless reader. The coupling frame may be tubular. A card body construction for a metal smart card is disclosed.

Embodiments disclosed herein include electronic packages with embedded magnetic materials and methods of forming such packages. In an embodiment, the electronic package comprises a package substrate, where the package substrate comprises a plurality of dielectric layers. In an embodiment a plurality of passive components is located in a first dielectric layer of the plurality of dielectric layers. In an embodiment, first passive components of the plurality of passive components each comprise a first magnetic material, and second passive components of the plurality of passive components each comprise a second magnetic material. In an embodiment, a composition of the first magnetic material is different than a composition of the second magnetic material.

A coil component includes a body having one surface and the other surface facing each other, and having one end surface and the other end surface facing each other in one direction; a supporting substrate embedded in the body; a coil portion disposed on the supporting substrate; a first lead-out portion connected to one end of the coil portion and exposed from the body; and a second lead-out portion connected to the other end of the coil portion and exposed from the body. The coil portion has a first pattern region facing the one surface and a second pattern region facing the other surface, each of the first and second pattern regions extends in the one direction, and a distance of the first pattern region in the one direction is shorter than a distance of the second pattern region in the one direction.

A space efficient planar transformer can include a coupled inductor circuit that can include a metallic core, a first planar winding comprising a conductive coil having an electrical path encircling a first post of the metallic core, and a second planar winding configured to magnetically couple with the first winding via the metallic core. The second planar winding can have multiple portions. A portion of the second winding can include a first sub-portion comprising a single U-shaped planar conductive trace wrapped about the first post and a second sub-portion comprising a single U-shaped planar conductive trace wrapped about the first post. A layout of the first sub-portion can be oriented opposite a layout of the second sub-portion.