47results about How to "Enhanced Magnetic Coupling" patented technology

A magnetic memory includes: a magnetization fixed layer having perpendicular magnetic anisotropy, a magnetization direction of the magnetization fixed layer being fixed; an interlayer dielectric; an underlayer formed on upper faces of the magnetization fixed layer and the interlayer dielectric; and a data recording layer formed on an upper face of the underlayer and having perpendicular magnetic anisotropy. The underlayer includes: a first magnetic underlayer; and a non-magnetic underlayer formed on the first magnetic underlayer. The first magnetic underlayer is formed with such a thickness that the first magnetic underlayer does not exhibit in-plane magnetic anisotropy in a portion of the first magnetic underlayer formed on the interlayer dielectric.

A first coil is configured in such a structure that first and second coil conductors are connected by a first through-hole conductor. A second coil is configured in such a structure that third and fourth coil conductors are connected by a second through-hole conductor. The first and second coils are arranged in a nonmagnetic section consisting of nonmagnetic layers. A portion located inside the first coil and the second coil in the nonmagnetic section includes a first regional portion and a second regional portion adjacent to each other when viewed from a laminated direction of the nonmagnetic layers. The first and second through-hole conductors are located in the first regional portion so as to be adjacent to each other, when viewed from the laminated direction. A magnetic core section comprised of a magnetic material is located in the second regional portion when viewed from the laminated direction.

A table pad coupling system including a first table pad and a second table pad. The first table pad having a plurality of peripheral surfaces including a first peripheral surface and a second peripheral surface, the first peripheral surface opposite the second peripheral surface. The first table pad additionally including a plurality of magnets positioned within the first table pad, the plurality of magnets including a first magnet associated with the first peripheral surface and a second magnet associated with the second peripheral surface, the first and second magnets having a surface of a same magnetic polarity, the surface of the first magnet and the surface of the second magnet outwardly oriented proximate the respective first and second peripheral surfaces. The second table pad having a plurality of peripheral surfaces including a first peripheral surface and a second peripheral surface, the first peripheral surface opposite the second peripheral surface, the first peripheral surface of the first table pad disposed adjacent the first peripheral surface of the second table pad.

The invention provides a wireless power transmission coil device based on meta-material, the device comprises a transmitting coil, a receiving coil and a conical displacement medium shell, and the conical displacement medium shell wraps the transmitting coil or the receiving coil in an air chamber of the shell; the distance between the transmitting coil and the receiving coil is greater than the diameters of the transmitting coil and the receiving coil separately; the conical displacement medium shell comprises a bottom shell and a side shell; and the bottom shell and the side shell respectively comprises various kinds of uniform and isotropous magnetic material layers. The conical displacement medium shell can optically moves a coil in the air chamber to a specified position on the outside of the shell, that is, the relative position between the transmitting coil and the receiving coil can be changed, so that the mutual inductance and the magnetic coupling of the transmitting coil and the receiving coil can be substantially enhanced.

A cold crucible induction furnace has a slotted-wall with a slotted inner annular protrusion that is disposed around the base of the crucible's melting chamber. The protrusions may be separated from the base by a gap that can be filled with an electrical insulating material. Slots may also be provided in the protrusions and / or the outer perimeter of the base.

A wireless power transferring device, a wireless power transferring unit and a wireless power receiving unit for transferring and receiving power. The power receiving unit includes an induction coil adapted to be subjected to an alternating magnetic field so that an alternating current is induced in the induction coil, a receiving concentrator core adapted to concentrate the magnetic field wherein the receiving concentrator core is surrounded by a medium, and a receiving guide member arranged to provide a smooth transition for the magnetic field between the medium and the concentrator core, and abutting the receiving concentrator core. The receiving guide member has a magnetic permeability in the range between the magnetic permeability of the receiving concentrator core and the medium.

A wireless power transferring device, a wireless power transferring unit and a wireless power receiving unit for transferring and receiving power. The power receiving unit includes an induction coil adapted to be subjected to an alternating magnetic field so that an alternating current is induced in the induction coil, a receiving concentrator core adapted to concentrate the magnetic field wherein the receiving concentrator core is surrounded by a medium, and a receiving guide member arranged to provide a smooth transition for the magnetic field between the medium and the concentrator core, and abutting the receiving concentrator core. The receiving guide member has a magnetic permeability in the range between the magnetic permeability of the receiving concentrator core and the medium.

A system for transmitting electric power from an electric power transmission apparatus (10) to an electric power reception apparatus (50) by using electromagnetic induction between a power receiving coil (60) and a power transmitting coil (40). The electric power transmission apparatus (10) comprises an electric power switching circuit (14), a first capacitor (20) and an electric power derivation circuit (30). The electric power switching circuit (14) includes a switching element (16) and an output point (P) and switches the switching element (16) at a predetermined switching frequency (f), thereby causing the electrical potential at the output point (P) to exhibit a predetermined variation, wherein the predetermined variation is an electrical potential variation obtainable by the half-wave rectification of a sinusoidal wave variation which has a predetermined amplitude. The first capacitor (20) is coupled between the output point (P) and a first constant electrical potential (ground). The electric power derivation circuit (30) includes the power transmission coil (40) and is formed to cause an AC variation of the foregoing predetermined variation to occur between the both ends of the power transmission coil (40). The electric power derivation circuit (30) is coupled between the output point (P) and a second constant electrical potential (ground).

The coil form (1) according to the invention for forming an inductive element includes a hollow (9) cylindrical mantle portion (2), two flange portions (3.1, 3.2) and a slit (7). The flange portions and the mantle portion form a winding chamber (5) for winding therein a wire that forms a first winding or a part of a first winding of the inductive element. The coil form (1), which is completely made of copper, forms a second coil or a winding of a second coil of the inductive element. Due to the increased contact surface between the first and the second coil the heat dissipation capabilities and the magnetic coupling between the coils are increased. This in turn results in an increased power density of the inductive element.

There are provided a magnetic coupling unit and a magnetic coupling system which are capable of reducing energy loss when operations using magnetic coupling between magnetic devices are performed. The magnetic coupling unit includes: one or more magnetic devices each capable of being magnetically coupled with other magnetic device in other unit; and one or more coupling reinforcing sections each reinforcing the magnetic coupling.

The invention belongs to the technical field of manufacturing of transformer products, and particularly relates to a switching reactor with a novel coil structure. The switching reactor comprises a double-arm coil, an iron core part and an iron core clamping part, wherein the iron core part is of a three-phase three-column structure, and the core column of each phase is sleeved with the double-armcoil; the double-arm coil comprises a first arm coil body and a second arm coil body, and the first arm coil body and the second arm coil body are oppositely wound on the core column to form a firstarm inner layer coil body and a second arm inner layer coil body respectively; the first arm coil and the second arm coil are crossed and transposed in the middle of the core column in the height direction to rise to the outer layer to be wound to form a first arm outer-layer coil and a second arm outer-layer coil. By adopting a crossed coil distribution structure, the two arm coils of the switching reactor are completely symmetrical in structural space and magnetic field space positions, and the distance between the two arm coils is reduced as much as possible on the premise that the two armcoils meet the insulation requirement, so that the magnetic coupling performance of the two arm coils is improved, and the performance requirements of the switching reactor in a non-bridging state anda bridging state are met.

The invention discloses a broadband high-isolation MIMO loop antenna based on electromagnetic coupling. The invention comprises four radiating units with the center located on the same straight line,the distance between adjacent radiating units is 5 mm, and the minimum electrical length is 0.03850 [lambda]0 ([lambda)0 is the lowest resonant wavelength); Each radiating element comprises four radiating elements, a dielectric substrate; The radiating element comprises three splitting rings and a parasitic band, wherein the three splitting rings are respectively a main radiating ring, a feeding ring and a parasitic ring. The proposed MIMO antenna, which consists of four radiating elements with sub-wavelength range, can achieve high isolation without any additional decoupling structure. The proposed antenna can be widely used in future 5G wireless systems.

A first coil is configured in such a structure that first and second coil conductors are connected by a first through-hole conductor. A second coil is configured in such a structure that third and fourth coil conductors are connected by a second through-hole conductor. The first and second coils are arranged in a nonmagnetic section consisting of nonmagnetic layers. A portion located inside the first coil and the second coil in the nonmagnetic section includes a first regional portion and a second regional portion adjacent to each other when viewed from a laminated direction of the nonmagnetic layers. The first and second through-hole conductors are located in the first regional portion so as to be adjacent to each other, when viewed from the laminated direction. A magnetic core section comprised of a magnetic material is located in the second regional portion when viewed from the laminated direction.

Wire-holders are provided that confine a single wire over a limited arc section and that are interspersed with ferrite ingots that provide wire-ways for several wires are utilized in the winding of the coils of a transformer. A method for consistently producing windings having accurate wire placement on rotors, stators, and other electrical componentry is also provided.

A coil device includes a bobbin including a hollow cylindrical portion and first and second flanges disposed at ends of the hollow cylindrical portion, and having a first partition located between the first and second flange and a second partition located between the first partition and second flange; the first winding wound around the outer periphery of the hollow cylindrical portion between first partition and the first flange; the second winding wound around the outer peripheral surface of the hollow cylindrical portion between the first partition and the second flange, and wound around both sides of the second partition according to a predetermined position. The coil device can wind the winding wire of the second winding at a predetermined position, thereby reinforcing the secondary side magnetic coupling while controlling or reducing the leakage inductance manufacturing error between the primary and secondary side due to difference in the secondary side winding.

The invention discloses a broadband high-isolation MIMO loop antenna based on electromagnetic coupling. The invention comprises four radiating units with the center located on the same straight line,the distance between adjacent radiating units is 5 mm, and the minimum electrical length is 0.03850 [lambda]0 ([lambda)0 is the lowest resonant wavelength); Each radiating element comprises four radiating elements, a dielectric substrate; The radiating element comprises three splitting rings and a parasitic band, wherein the three splitting rings are respectively a main radiating ring, a feeding ring and a parasitic ring. The proposed MIMO antenna, which consists of four radiating elements with sub-wavelength range, can achieve high isolation without any additional decoupling structure. The proposed antenna can be widely used in future 5G wireless systems.

The invention relates to a wireless power supply device for electric vehicles, which adopts magnetic coupling resonance type and magnetic induction type wireless power transmission and reception mode, including a transmitting coil, a receiving coil, a transmitting coil magnetic core and a receiving coil magnetic core, and the transmitting coil magnetic core is composed of The thin shaft of the magnetic core and the circular platforms at both ends of the magnetic core are composed; the transmitting coil is wound close to the thin shaft of the magnetic core; the height of the transmitting coil is equal to the length of the thin shaft of the magnetic core l core equal; the height h of the round platform at both ends of the magnetic core is 1 / 6 of the length l of the transmitting coil magnetic core; the upper bottom surface of the round platform at both ends of the magnetic core is close to the thin axis of the magnetic core and the cross-sectional radius of the thin axis of the magnetic core is r core , the radius r of the two upper bottom surfaces and the radius r of the transmitting coil 1 Equal; the radius R of the bottom surface of the circular platform at both ends of the magnetic core and the radius r of the receiving coil 2 The same; the height of the receiving coil is the same as the length L of the receiving coil core. The wireless energy transmission effect of the invention is better, and the transmission distance and transmission efficiency are greatly improved.

The invention provides a low-cobalt nickel nanocrystalline iron-base magnetically soft alloy material and a preparation method thereof. Under the condition of ensuring better soft magnetic property, the material not only reduces the high-price metal cobalt but also has good magnetic property. The preparation method has simple process and low production cost and is suitable for industrial production. The material comprises the following components by weight percent: 4-6.5% of Co, 5-8% of Ni, 3-5% of Gd, 0.01-0.05% of Ir, 0.1-0.5% of Tm, 0.1-0.5% of Dy, 2-4% of Al, 0.1-0.5% of P, 1-3% of B and the balance of Fe.