A magnetic shielding sheet for a reception antenna, and a wireless power reception module including same are provided. A magnetic shielding sheet for a reception antenna, according to an exemplary embodiment of the present invention, blocks the magnetic field induced in a reception antenna, and comprises: a planar first shielding sheet including a through-hole penetratively formed with a predetermined area in a region corresponding to a hollow portion of the reception antenna; and a second shielding sheet arranged to come in contact with one surface of the first shielding sheet, so as to block the magnetic field leaking through the through-hole.

A magnetic shielding sheet for a reception antenna, and a wireless power reception module including same are provided. A magnetic shielding sheet for a reception antenna, according to an exemplary embodiment of the present invention, blocks the magnetic field induced in a reception antenna, and comprises: a planar first shielding sheet including a through-hole penetratively formed with a predetermined area in a region corresponding to a hollow portion of the reception antenna; and a second shielding sheet arranged to come in contact with one surface of the first shielding sheet, so as to block the magnetic field leaking through the through-hole.

An antenna, in particular a magneto-inductive antenna, for a hearing instrument as well as a hearing instrument having such an antenna are provided. The antenna has a first antenna surface and a second antenna surface, which are respectively formed from a flexible magnetic foil. The antenna furthermore has a base, which is formed from a magnetic material or contains a magnetic layer, and which connects the two antenna surfaces to one another. The two antenna surfaces are angled off from the base in the same direction. Lastly, the antenna contains an antenna winding which has at least one first monolayer spiral coil and is arranged, in particular applied, externally on the first antenna surface so that an axis of the first spiral coil is oriented perpendicularly with respect to the first antenna surface.

Provided are a large area type complex magnetic field shielding sheet and a wireless power transfer module including the same. A large area type complex magnetic field shielding sheet wherein at least one of an overall width, an overall length, and a diameter is 100 mm or more may include a main shielding layer arranged so that a plurality of ferrite block bodies each having a predetermined area are adjacent to each other, and an auxiliary shielding layer formed of at least one magnetic sheet having a predetermined area and laminated on the main shielding layer through an adhesive layer, wherein a boundary region between two ferrite block bodies disposed to be adjacent each other is disposed to be located in an inner region of the magnetic sheet and thus a magnetic field which leaks into a gap between the two ferrite block bodies is blocked by the magnetic sheet.

A core includes a first core part, a second core part, and a spacer. The spacer is between the first core part and the second core part. A board has an opening in which the first core part is inserted, and includes a wiring pattern that wraps around the opening. A magnetic shielding member covers all of the wiring pattern in a plan view of the board, and is insulated from the wiring pattern and the core.

A coil for transfer of information or energy is described. The coil includes an electrically conductive magnetically insulative first layer and a magnetically conductive second layer bonded to the first layer along the length of the first layer. The first and second layers are wound to form a plurality of substantially concentric loops. A width and a length of the second layer may be substantially co-extensive with a respective width and length of the first layer so as to expose opposing longitudinal edge surfaces of the first layer along the length of the first layer. At least one of the opposing longitudinal edge surfaces may include a regular pattern extending substantially along a same first direction and across substantially the entire coil. A method of making the coil is described.

A coil for transfer of information or energy is described. The coil includes an electrically conductive magnetically insulative first layer and a magnetically conductive second layer bonded to the first layer along the length of the first layer. The first and second layers are wound to form a plurality of substantially concentric loops. A width and a length of the second layer may be substantially co-extensive with a respective width and length of the first layer so as to expose opposing longitudinal edge surfaces of the first layer along the length of the first layer. At least one of the opposing longitudinal edge surfaces may include a regular pattern extending substantially along a same first direction and across substantially the entire coil. A method of making the coil is described.

Micro-scale planar-coil transformers including one or more shields are disclosed. The one or more shields can block most common-mode current from crossing from one side to another side of a transformer. Reduction of common-mode current crossing the transformer results in reduction of dipole radiation, which is the main component of electromagnetic interference (EMI) in some transformers.

Micro-scale planar-coil transformers including one or more shields are disclosed. The one or more shields can block most common-mode current from crossing from one side to another side of a transformer. Reduction of common-mode current crossing the transformer results in reduction of dipole radiation, which is the main component of electromagnetic interference (EMI) in some transformers.

A power reception device includes: a housing including a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface surrounding a space between the first surface and the second surface; a coil antenna wound in a circle; a shielding sheet disposed over the coil antenna; and a first magnet and a second magnet adjacent to an outermost coil of the coil antenna and disposed to be spaced apart from the outermost coil. The first magnet is disposed so that a portion of magnetism induced by the first magnet is formed in the first direction. The second magnet is disposed so that a portion of the magnetism induced by the second magnet is formed in a third direction that is an outside direction from a center of the coil antenna.