Abstract: Disclosed is a dielectric composition including a barium titanate-based base material major component and a minor component. The dielectric composition includes any one of oxides and carbonates of at least Yb element among oxides and carbonates of Mg, Si, V, Mn and Cr, Ba and Yb elements. A dielectric material formed by sintering the dielectric composition satisfies the X8R properties specified by the EIA specification.

Abstract: Disclosed is a dielectric composition comprising a barium titanate-based base material major component and a minor component. The dielectric composition includes any one of oxides and carbonates of at least one of Y and Dy elements among oxides and carbonates of Mg, Si, V, Mn and Cr, Ba, Y and Dy elements. A stacked ceramic capacitor formed by sintering the dielectric composition satisfies the X7R properties specified by the EIA specification and has high permittivity.

Abstract: A dielectric composition for a multilayered ceramic capacitor is provided, the multilayered ceramic capacitor includes the same, and a manufacturing method for the capacitor is also provided. The dielectric composition for a multilayered ceramic capacitor includes a barium-based compound, gadolinium oxide (Gd2O3), manganese oxide (Mn3O4), and magnesium carbonate (MgCO3). Accordingly, the dielectric composition is excellent in performance as well as reliability.

Abstract: Provided is a ceramic capacitor capable of reducing the influence of deviation even when internal electrodes are misaligned. The disclosed ceramic capacitor comprises: a ceramic body; a first internal electrode disposed inside the ceramic body; and a second internal electrode disposed inside the ceramic body and surrounding the circumference of the first internal electrode while being spaced apart from the first internal electrode on the same horizontal plane as the first internal electrode.

Abstract: The present invention relates to a ceramic capacitor comprising: a plurality of dielectric layers; a ceramic body having front and rear surfaces facing each other, upper and lower surfaces facing each other, and both end surfaces facing each other; at least a pair of inner electrodes arranged to be spaced a predetermined interval apart inside the ceramic body so that each end thereof is exposed to either end surface of the ceramic body; and outer electrodes electrically connected to the inner electrodes, wherein the outer electrode includes electrode layers formed at both end surfaces of the ceramic body, and a conductive resin layer for covering a part of the electrode layer and encompassing the lower edge of the ceramic body. In the present invention, an external electrode having improved shock absorption efficiency is applied so that the occurrence of cracks can be prevented.

Abstract: A multilayer common mode filter of the present disclosure has a filter stack comprising: a coil stack which includes a plurality of coils forming different channels; and a stack which is stacked underneath the coil stack and has a capacitor pattern, a floating pattern, an inductor pattern, and a ground pattern, wherein resonant frequency characteristics may vary according to the inductor pattern.

Abstract: The present disclosure is a technique for improving the stability and reliability of an antenna operation against external shock and vibration, and proposes an electrical member contact device including a gasket and a frame each having conductivity and configured so that the frame fastened to a fastening hole is bent to face the fastening hole and is coupled to the gasket, and an antenna module comprising same.

Abstract: Provided are: a feed pin in which a step is formed on a head to prevent cracks from forming in a soldering layer; and a patch antenna comprising the feed pin. The provided feed pin includes: a feed head made of a conductive material and in the shape of a plate having a first area; a stepped plate made of a conductive material and in the shape of a plate having a second area, the stepped plate being connected to the lower surface of the feed head; and a feed bar made of a conductive material and in the shape of a polyhedron, the feed bar being connected to the lower surface of the stepped plate.

Abstract: A stator having a bus bar structure that enhances assembly productivity and durability by adopting the bus bar structure comprises: a division type stator core in which a plurality of split cores are assembled in an annular shape; upper and lower insulators surrounding the outer circumference of teeth of the split cores; a stator coil composed of a plurality of core groups continuously wound onto three teeth for each phase; a plurality of bus bar brackets coupled to the insulators so as to bind two split cores; U-phase, W-phase, and V-phase bus bars on which a connection terminal to which a start terminal of each core group is connected is protruded; a common electrode bus bar on which a connection terminal to which an end terminal of each core group is connected is protruded; and a stator support that insulates between coils so as to integrate the plurality of split cores.

Abstract: Provided are a stator, and a propeller driving device and an aircraft using the stator. The propeller driving device includes: a radial gap type BLDC motor with an inner rotor-outer stator structure where a rotor is placed in a circumferential shape with an air gap inside a stator; and a propeller installation bracket for mounting a propeller to a rotary shaft of the motor, wherein the stator includes: a stator core including an annular back yoke having a predetermined width to form a magnetic circuit and teeth extending from the back yoke in a central direction; an insulator formed to surround an outer circumferential surface on which a coil is wound in each tooth; and a stator coil wound around an outer circumferential surface of the insulator in each tooth. The insulator is formed of an insulating heat dissipation composite material having both heat dissipation performance and insulation performance.

Abstract: Disclosed is a multilayered common mode filter exhibiting wideband characteristics as well as allowing uniform resistance and inductance in the coil patterns that form the channels. The disclosed multilayered common mode filter includes first and second capacitor layers on top and bottom, respectively, of an electrode stack, to overlap with multiple coil patterns and form additional capacitance, the electrode stack including stacked upper and lower electrode layers each having a stacked body provided with multiple coil patterns.

Abstract: A hub-type electronic driving device comprises: a housing comprising a wheel and a cover, the wheel having a rim formed on the outer periphery thereof such that a tire is coupled thereto, the wheel having the shape of a cup, one side of which is open, and the cover having an outer peripheral portion coupled to the opening of the wheel; a motor shaft having both ends fixedly installed on a body in which the hub-type electronic driving device is installed; first and second bearings installed in through-holes formed at centers of the wheel and the cover, respectively, so as to rotatably support the housing around the motor shaft; a BLDC motor contained in the housing so as to rotate the housing around the motor shaft; a cable containing multiple wires for applying a motor driving signal from a motor driving circuit installed outside the housing to the BLDC motor; and a cable guide assembly installed between the motor shaft and the first bearing supporting the wheel so as to maintain a sealing state when the cabl

Abstract: Proposed is a laminated common mode filter in which a ground pattern is interposed between coil patterns to form additional capacitance. The proposed laminated common mode filter comprises: an upper electrode layer composed of a laminate having a first coil pattern, a second coil pattern, and a third coil pattern; a ground layer that is arranged on the lower portion of the upper electrode layer and has a ground pattern; and a lower electrode layer that is arranged on the lower portion of the ground layer and is composed of a laminate having a fourth coil pattern, a fifth coil pattern, and a sixth coil pattern, wherein the ground pattern is arranged to overlap the coil patterns of the upper electrode layer and the coil patterns of the lower electrode layer to form capacitance.

Abstract: Disclosed is a shield can which operates as an antenna for location determination while blocking electromagnetic waves by defining a shielding area and radiation areas which resonate in one or more frequency bands by forming a shielding pattern and a radiation pattern, and an electronic module comprising same. Here, the shield can comprises: a carrier, a shielding pattern plated on a portion of the surface of the carrier to form the shielding area; and a radiation pattern plated on a different portion of the surface of the carrier to form a plurality of radiation areas.

Abstract: Provided is a stacked ceramic capacitor package, for an electronic device, preventing noise, vibration and cracks due to piezoelectric properties. The ceramic capacitor package for an electronic device comprises: stacked ceramic capacitors; a first terminal structure connected to a first side surface of the stacked ceramic capacitors; and a second terminal structure connected to a second side surface of the stacked ceramic capacitors and disposed so as to face the first terminal structure with the stacked ceramic capacitors therebetween. The first terminal structure has a first groove defined in an area coming into contact with the first side surface of the stacked ceramic capacitors. The horizontal length of the first groove is 30% to 50% of the horizontal length of the stacked ceramic capacitors.

Abstract: Provided are a rotor, and a propeller driving device and an aircraft using same. The propeller driving device includes: a housing in which an upper cover and a lower cover having a plurality of through holes are respectively coupled to an upper portion and a lower portion of a cylindrical case; a stator arranged inside the case; a rotor arranged at a distance from the stator; and a rotary shaft connected to the rotor through a plurality of bridges and having both ends rotatably supported by an upper bearing and a lower bearing positioned at respective centers of the upper cover and the lower cover, wherein inner cooling of a motor is formed by an air flow passage that passes through a plurality of through holes of the upper cover and the lower cover and a plurality of spaces formed between the plurality of bridges.

Abstract: A multilayer common mode filter of the present disclosure has a filter stack configured by stacking, underneath a coil stack comprising a plurality of coils configuring mutually different channels, a stack provided with a capacitor pattern, a floating pattern, an inductor pattern, and a ground pattern, wherein resonance frequency characteristics may be changed according to the inductor pattern.

Abstract: Provided is a drive motor having a slim BLDC motor vertically mounted in a housing and a swivel actuator using same. A swivel actuator includes: a cylindrical housing where a hollow cylindrical portion protrudes from a bottom of a center thereof and first and second step portions protrude from an inner side wall thereof; a drive motor arranged on the bottom surface of the housing and providing rotational power to a rotor support extending upward; a cylindrical first worm gear integrally formed on the outer circumference of the rotor support; and first and second three-stage gear mechanisms coupled to opposite outer circumferences of the first worm gear, and rotating a rotating table with increased torque by reducing a rotation speed of the first worm gear.

Abstract: Provided are a fan capable of preventing oil-scattering without using an oil-scattering prevention washer and simultaneously preventing the escape of a rotary shaft due to a lift, and a manufacturing method therefor. The fan includes: a cylindrical fan housing; a base having a bearing housing integrally formed therewith, the bearing housing protruding from the rear surface of the fan housing to the center portion thereof; a sleeve bearing inserted in the bearing housing; a rotary shaft of which the lower portion is rotatably supported by the sleeve bearing; a rotor fixed to the upper portion of the rotary shaft; a stator which is coupled to the outer circumference of the bearing housing, and is arranged with a predetermined gap from the rotor; and an impeller which is integrally formed with the outer circumference of the rotor.

Abstract: Provided is a water pump using an axial gap-type electric motor employing a rare-earth-free magnet. The water pump (EWP) includes: a pump housing having a space in a sealing state on one side thereof, in which, on the other side thereof, an inlet through which a fluid is introduced and an outlet through which the introduced fluid is discharged are connected through a fluid flow passage; a rotor rotatably supported on the fluid flow passage; an impeller integrally formed with the rotor on the upper side of the rotor; a stator arranged in the lower space to generate a rotating magnetic field to rotatably drive the rotor; and a waterproof partition wall arranged inside the pump housing to separate the rotor from the stator.