Abstract: [Object] To provide a method of producing a surface-mount inductor which comprises an external electrode having high fixing strength with respect to an element body even in a high-humidity environment. [Means to Accomplish the Object] The method of producing a surface-mount inductor according to the present invention comprises the steps of: winding an electrically-conductive wire to form a coil; forming a core using a sealant primarily containing a metal magnetic powder and a resin in such a manner as to encapsulate the coil in the sealant while allowing each of opposite ends of the coil to be at least partially exposed on a surface of the core; reducing smoothness of a surface of at least a part of a portion of the core on which an external electrode is formed as compared to a surface therearound; and forming the external electrode on the core in such a manner as to be electrically conducted with the coil.

Abstract: A laminated-type electronic component including: plural magnetic material layers; plural conductive patterns; a laminated layer body formed by laminating the plural magnetic material layers and the plural conductive patterns; a coil formed in the laminated layer body by connecting the conductive patterns between the magnetic material layers; and at least one magnetic gap formed in the laminated layer body, wherein the magnetic gaps are formed of a compound of Ni and Cu.

Abstract: [Technical Problem] In a dielectric waveguide input/output structure for performing conversion from a dielectric waveguide through a microstrip to a coaxial line, the conversion is performed once to the microstrip line, and then further to the coaxial line, resulting in a greater loss. Thus, there has been a problem that degradation in performance is unavoidable. Further, the microstrip is required to have a certain level or more of length so as to prevent reduction in size of the printed circuit board. This has been an impediment to downsizing of the input/output structure. [Solution to the Problem] Provided is an input/output structure for a dielectric waveguide, comprising a rectangular-parallelepiped-shaped dielectric block, a plate-shaped dielectric plate, and a feeder line comprising a line-shaped electrically conductive foil sandwiched between the dielectric block and the dielectric plate.

Abstract: A surface mount inductor including a drum core having a pair of flanges at both ends of a winding shaft thereof, a winding formed by winding an insulation-coated wire around the winding shaft, and a pair of plate-like metal terminals arranged on a flange surface of the drum core and each having a protrusion part protruding from a perimeter of the flange, wherein terminals of the winding are tied around the protrusion parts, the protrusion parts are compressed in a vertical direction and formed to have a predetermined height-direction dimension, and tied parts are immersed in a solder bath to be subjected to connection processing.

Abstract: Dielectric waveguide comprising a circular input/output electrode on its bottom surface and surrounded by an exposed dielectric portion thereof around which a conductor film is disposed. A short stub crosses through the exposed dielectric portion to couple the electrode and film together. The printed circuit board has a front surface formed with a generally-circular island-shaped electrode surrounded by a front surface-side ground pattern in a spaced-apart relation thereto, and a back surface formed with a strip line surrounded by a back surface-side ground pattern in spaced-apart relation thereto. An approximate center of the island-shaped electrode and one end of the strip line are coupled together, and the front surface-side ground pattern and the back surface-side pattern are coupled together. The input/output electrode of the dielectric waveguide and the island-shaped electrode of the printed circuit board are coupled together.

Abstract: A method of producing a surface-mount inductor by encapsulating a coil with an encapsulation material containing a resin and a filler using a mold die assembly is provided. In the method, a tablet and a coil are used. The tablet is prepared by preforming the encapsulation material into a shape having a flat plate-shaped portion and a pillar-shaped convex portion on a peripheral thereof. The coil is a wound conductive wire having a cross-section of rectangular-shape. The coil is placed on the tablet to allow both ends of the coil to extend along an outer side surface of the pillar-shaped convex portion of the tablet. The coil and the encapsulation material are integrated together while clamping the both ends of the coil between an inner wall surface of the mold die assembly and the outer side surface of the pillar-shaped convex portion of the tablet, to form a molded body.

Abstract: A method of producing a surface-mount inductor by encapsulating a coil with an encapsulation material containing a resin and a filler using a mold die assembly is provided. In the method, a tablet and a coil are used. The tablet is prepared by preforming the encapsulation material into a shape having a flat plate-shaped portion and a pillar-shaped convex portion on a peripheral thereof. The coil is a wound conductive wire having a cross-section of rectangular-shape. The coil is placed on the tablet to allow both ends of the coil to extend along an outer side surface of the pillar-shaped convex portion of the tablet. The coil and the encapsulation material are integrated together while clamping the both ends of the coil between an inner wall surface of the mold die assembly and the outer side surface of the pillar-shaped convex portion of the tablet, to form a molded body.

Abstract: [Technical Problem] This invention provides a surface-mount inductor that is capable of positioning a coil in a predetermined position in a mold, thereby to position the coil in a predetermined position of a core and to prevent led-out ends from being buried in the core. [Solution to the Problem] A surface-mount inductor of the present invention comprises: a coil formed by winding a winding wire; and a core containing a magnetic powder and including the coil therein. The coil has opposite led-out ends, each of which is exposed on respective ones of opposed side surfaces of the core. Each of the led-out ends of the coil is connected to an external electrode formed on the core.

Abstract: [TECHNICAL PROBLEM] Present invention provides a surface-mount inductor allowing the Q to be improved at a higher frequency and preventing the efficiency of the inductor from getting worse even at the higher frequency. [SOLUTION TO THE PROBLEM] A surface-mount inductor comprises: a coil formed by winding a conductive wire; and a core comprising mainly of a magnetic powder and a resin and containing the coil therein. The magnetic powder contains plural types of magnetic powders each having a different particle size from others, and the plural types of magnetic powders are mixed to satisfy the following relationship: ?an·?n?10 ?m, where an is a mixing ratio, ?n is an average particle size, and n is an integer of 2 or more.

Abstract: Disclosed is a resin composition, which comprises a thermosetting resin contained therein in an amount of 40 volume % or more, and a wax contained therein in an amount of 5 to 30 volume %, wherein: the thermosetting resin exists in liquid form at room temperature; and the wax exists in powder form at room temperature and has a melting point of 70 to 150° C., and wherein the resin composition has a viscosity of 50000 to 150000 mPa·s as measured at room temperature.

Abstract: A laminated-type electronic component including: plural magnetic material layers; plural conductive patterns; a laminated layer body formed by laminating the plural magnetic material layers and the plural conductive patterns; a coil formed in the laminated layer body by connecting the conductive patterns between the magnetic material layers; and at least one magnetic gap formed in the laminated layer body, wherein the magnetic gaps are formed of a compound of Ni and Cu.

Abstract: There is provided a wireless power transmitting device which can detect relative positions of a power transmitting coil and a power receiving coil with a simple configuration, and reduce cost of components. The wireless power transmitting device has: a power transmitting coil which supplies power to a power receiving coil by way of electromagnetic induction; an excitation coil which excites the power receiving coil; a plurality of detecting coils which are arranged around a center of the power transmitting coil; and notifying units, and each of the detecting coils has a shape which widens apart from the center of the power transmitting coil, and the notifying units notify relative positions of the power transmitting coil and the power receiving coil by detecting an echo signal produced in the power receiving coil through the plurality of detecting coils.

Abstract: [OBJECT] It is directed to solving a problem that designing for a conventional waveguide slot antenna capable of radiating a circularly polarized wave involves complicated calculation, and a resulting circularly polarized wave antenna device can obtain a satisfactory axial ratio only in a narrow band. [SOLUTION] The present invention provides a waveguide slot antenna which utilizes a waveguide as a feeding line and has a linear-shaped slot provided in a wall of the waveguide. The waveguide slot antenna is characterized in that it comprises a pair of polarized wave conversion members surrounding an outer periphery of the slot and divided by a slit intersecting the slot. [EFFECT] The present invention can provide a waveguide slot antenna capable of radiating a circularly polarized wave with a satisfactory axial ratio characteristic, over a wide band, only by adding a simple component to a conventional waveguide slot antenna.

Abstract: A non-contact electric power transmission circuit according to an embodiment of the invention includes an electric power transmission circuit and an electric power receiving circuit. The electric power transmission circuit includes a full bridge circuit and a resonant type full bridge circuit. A direct-current power supply is used as an input of the full bridge circuit, the full bridge circuit includes two sets of switching elements, two switching elements being connected in series in each set of the switching elements, a drive circuit alternately feeds a pulse signal to gates of the switching elements to perform switching of the direct-current input in the full bridge circuit, and a serial resonant circuit of a resonant capacitor and an electric power transmission coil is connected to an output of the full bridge circuit in the resonant type full bridge circuit. The electric power receiving circuit includes an electric power receiving coil and a rectifying and smoothing circuit.

Abstract: The present invention provides an antenna coil which can be made smaller and intends to improve a receiving sensitivity in consideration of all directions. According to one embodiment of the present invention, an antenna coil including: a first coil 4 having an X-axis coil wound on an X axis of a first core and a Z-axis coil wound on a Z axis of the first core, the thickness direction of the first core being determined to be the Z-axis, an axis orthogonal to the Z axis being determined to be the X axis; a second coil 5 having a Y-axis coil wound around a second core, the second core having flanges at both ends; four external terminals 3 each connected to a corresponding end of the X-axis coil or the Z-axis coil and additionally provided on the first core; and two external terminals 3 each connected to a corresponding end of the Y-axis coil and additionally provided on the second core.

Abstract: A coil component of the present disclosure includes: a coil having a first coil tier and a second coil tier with an outer diameter smaller than that of the first coil tier; and a core on which the coil is mounted. The second coil tier of the coil is in contact with the core.

Abstract: A coil component, in which a space on an outer periphery of a winding interposed between a pair of flange portion is coated with a resin with magnetic powder, has a problem of long-term reliability that a thermosetting resin expands and contracts due to change in a temperature and the flange portions are fatigued to be broken. An object of the present invention is to provide the coil component of which core is hardly broken even when the resin with magnetic powder expands and contracts and a method of manufacturing the same.

Abstract: A method of producing a surface-mount inductor by encapsulating a coil with an encapsulation material containing a resin and a filler using a mold die assembly is provided. A tablet is prepared by preforming the encapsulation material into a shape having a flat plate-shaped portion and a pillar-shaped convex portion on a peripheral thereof A coil is a wound conductive wire having a cross-section of rectangular-shape. The coil is placed on the tablet to allow both ends of the coil to extend along an outer side surface of the pillar-shaped convex portion of the tablet. The coil and the encapsulation material are integrated together while clamping the both ends of the coil between an inner wall surface of the mold die assembly and the outer side surface of the pillar-shaped convex portion of the tablet, to form a molded body.

Abstract: In a dielectric waveguide-microstrip transition structure for mounting a dielectric waveguide on a printed-wiring board, one object of the present invention is directed to providing a further downsized structure as compared with a conventional structure, while maintaining an influence of displacement between the dielectric waveguide and the microstrip at a low level by means of non-contact coupling.

Abstract: A non-contact power transfer apparatus includes a power transmission unit including a power transmission coil, a power transmission circuit, a current detection circuit, and a unit detection means and a first microcomputer with a control circuit for controlling each of the circuits. The non-contact power transfer apparatus also includes a power reception unit having a power reception coil, a rectification smoothing circuit, a series regulator, a charge battery unit with a rechargeable battery, a switching element for pulse-charging and a second microcomputer with a control circuit for controlling the series regulator and the switching element. As such, the power reception unit receives power via the power reception coil, while the rectification smoothing circuit and series regulator generate a set voltage. The set voltage is used to start the second microcomputer to apply an initial reset and a pulse pattern as an ID authentication pattern to the switching element.