Abstract: A wireless IC device includes a wireless IC chip, a coupling electrode, and a radiation plate. The coupling electrode includes coupling portions arranged to be coupled to the wireless IC chip and a pair of opposing ends. The pair of opposing ends are capacitively coupled to each other and oppose the radiation plate to be coupled to the radiation plate. The wireless IC chip uses the radiation plate as an antenna to transmit and receive signals having certain frequencies to and from an RFID system.

Abstract: A ceramic electronic component includes a ceramic body; a plurality of internal electrodes provided in the ceramic body and including ends exposed on a surface of the ceramic body; a coating layer covering a surface portion of the ceramic body on which the internal electrodes are exposed, the coating layer being made of a glass or resin medium in which metal powder particles are dispersed; and an electrode terminal provided directly on the coating layer and including a plating film. The metal powder particles define conduction paths electrically connecting the internal electrodes with the electrode terminal and have an elongated shape in cross section along a thickness direction of the coating layer. The metal powder particles defining the conduction paths have a maximum diameter not smaller than the thickness of the coating layer.

Abstract: A ceramic green sheet laminate is produced by stacking ceramic green sheets, each including conductive films for forming first or second internal electrodes on a surface thereof. A first cutting step is performed in which the ceramic green sheet laminate is cut to form first and second end surfaces at which the first or second internal electrodes are exposed. A second cutting step is performed in which the ceramic green sheet laminate is cut to form first and second side surfaces at which the first and second internal electrodes are exposed. In the second cutting step, the ceramic green sheet laminate is pressed and cut by moving a cutting blade in a length direction or a width direction.

Abstract: A ceramic electronic component includes a ceramic body, a plurality of internal electrodes provided in the ceramic body and including ends exposed on a surface of the ceramic body; a glass coating layer covering a portion of the surface of the ceramic body on which the internal electrodes are exposed; and an electrode terminal provided directly on the glass coating layer and including a plating film. The glass coating layer is made of a glass medium in which metal powder particles are dispersed. The internal electrodes project from the surface of the ceramic body into the glass coating layer without passing through the glass coating layer. The metal powder particles define conduction paths electrically connecting the internal electrodes with the electrode terminal.

Abstract: An RFID chip package includes an RFID chip including a voltage booster circuit and processing an RF signal in a UHF band and a power supply circuit connected to the RFID chip and including at least one inductance element. A reactance component of an input/output impedance at an antenna-connecting input/output terminal of the power supply circuit is substantially 0?.

Abstract: A ceramic electronic component includes a ceramic body, a glass coating layer, and an electrode terminal. The ceramic body includes a plurality of internal electrodes whose ends are exposed on the surface of the ceramic body. The glass coating layer covers a portion of the ceramic body on which the internal electrodes are exposed. The electrode terminal is provided directly on the glass coating layer. The electrode terminal includes a plating film. The glass coating layer is made of a glass medium in which metal powder particles are dispersed. The metal powder particles define conduction paths that electrically connect the internal electrodes with the electrode terminal.

Abstract: A semiconductor ceramic element includes an element main body where a PTC section including a semiconductor ceramic which has PTC characteristics and an NTC section including a semiconductor ceramic which has NTC characteristics are integrated by co-firing while suppressing interdiffusion. The element main body is formed in such a way that a PTC substrate is first obtained by firing a semiconductor ceramic material to serve as the PTC section at a predetermined temperature, and a paste containing a semiconductor ceramic material to serve as the NTC section is then applied or printed on the PTC substrate, followed by co-firing at a temperature lower than the predetermined temperature.

Abstract: Provided is a laminated ceramic capacitor having excellent lifetime characteristics in a high-temperature loading test. It includes a laminated body including a plurality of stacked dielectric layers including crystal grain and crystal grain boundaries, and a plurality of internal electrodes and external electrodes. The laminated body contains, as its main constituent, a perovskite-type compound containing Ba and Ti and optionally Ca, and further contains a rare-earth element R, and Mn, Mg, V, and Si With respect to 100 parts by mol the Ti, the total parts by mol content (100×m) of Ba and Ca is 0.950?m<1.000, the contents in terms of parts by mol is 0.3?R?2.5, 0.05?Mn?0.5, 0.5?Mg?2.0, 0.05?V?0.25, 0.5?Si?3.0, and further, the molar ratio x of Ca/(Ba+Ca) is 0?x?0.01, and the existence of the rare-earth element R in a position of 4 nm inner from a surface of the crystal grain is 20% or more.

Abstract: In an electronic component, a laminated body includes a plurality of insulator layers laminated on each other. First, second and third LC parallel resonators are loop-shaped LC parallel resonators that include via hole conductors extending in a z-axis direction and conductor layers provided on the insulator layers, and define a band pass filter. Loop planes of the first and third LC parallel resonators and a loop plane of the second LC parallel resonator are parallel to the z-axis direction and not parallel to each other.

Abstract: A dielectric ceramic enabling low-temperature firing and exhibiting good dielectric characteristics, and a stack ceramic electronic component using the same are provided. The dielectric ceramic containing (Ba1-x-yCaxSry)m(Ti1-zZrz)O3 (1.005?m?1.2, 0?x+y?0.2, and 0?z?0.2) as a major component and an amount of Bi relative to 100 parts by mol of the major component which is 1.0 part by mol or more and 40 parts by mol or less.

Abstract: A dielectric thin film element having a high humidity resistance is provided. A dielectric thin film element includes a capacitance section having a dielectric layer and a pair of electrode layers formed on the respective upper and lower surfaces of the dielectric layer 22. Furthermore, a protection layer is provided on the capacitance section, a pair of interconnect layers are drawn out to an upper surface of the protection layer, and external electrodes are formed to be electrically connected to the interconnect layers. Further, first surface metal layers cover a portion of the interconnect layers that extends along the inner surface of the openings and second surface metal layers are formed at end of the first surface metal layers.

Abstract: A compact wireless communication includes a first radiating element and a second radiating element, which define and function as a dipole antenna, a feeder circuit including a wireless IC chip coupled with the first and second radiating elements, and a feeder substrate that is provided with the wireless IC chip. The first radiating element is provided to the feeder substrate. The second radiating element is provided to a substrate other than the feeder substrate.

Abstract: A DC-DC converter module includes a multi-layer substrate, a switching IC, and a coil. The multi-layer substrate includes component mounting electrodes provided on the top surface and an input terminal, an output terminal, and ground terminals provided on the bottom surface. The switching IC switches an input voltage and includes an input electrode, an output electrode, and a ground electrode, and is mounted on the top surface of the substrate by connecting the electrodes to the component mounting electrodes. The coil is arranged within the multi-layer substrate in a spiral shape with an axis extending in the substrate stacking direction. The bottom surface side end of the coil is connected to the input/output electrode of the switching IC.

Abstract: An impedance converting circuit module includes a first matching circuit, a feeding-circuit-side matching circuit interposed between the first matching circuit and a feeding circuit, and an antenna-side matching circuit interposed between the first matching circuit and a radiating element. The feeding-circuit-side matching circuit performs impedance matching between a feeding port of the feeding circuit and the first matching circuit, and the antenna-side matching circuit performs impedance matching between a port of the radiating element and the first matching circuit.

Abstract: A wireless communication device includes a wireless IC chip that processes a high-frequency signal and a feeding substrate including a coil conductor, a plane conductor, and a matching circuit that is connected to the wireless IC chip and that has a predetermined resonant frequency. The coil conductor and the plane conductor are connected to the matching circuit. The wireless communication device, when used by itself, operates as a monopole antenna in which the plane conductor functions as a ground and the coil conductor functions as a radiation element. When a conductive object is in a vicinity of the plane conductor, the plane conductor is coupled to the conductive object, and the wireless communication device operates as a dipole antenna in which the plane conductor and the conductive object function as a first radiation element and the coil conductor functions as a second radiation element.

Abstract: A multilayer body is formed of a plurality of insulator layers that are stacked on top of one another. A coil is a helical coil provided in the multilayer body and includes a plurality of coil conductor layers that are superposed with one another so as to form a ring-shaped path when seen in plan view from a stacking direction and a plurality of via hole conductors that connect the plurality of coil conductor layers together. The path includes corners that project outward and corners that project inward. Each of the via hole conductors are provided at one of the corners, which project outward.

Abstract: An electric power transmission system that includes a power receiving device having a first coupling electrode and a power transmission device having a second coupling electrode, both the devices being coupled via an electrostatic field, and the power transmission device configured to transmit electric power to the power receiving device in a noncontact state. The power transmission device includes a third coupling electrode that is disposed at a distance from the second coupling electrode. The third coupling electrode has a potential higher than that of the second passive electrode and lower than that of the second active electrode.

Abstract: This disclosure provides a magnetic material-containing resin to be used for coating and forming cores. A magnetite-containing resin of the present invention includes a magnetite having a residual magnetic flux density of less than 15 Am2/kg and a coercive force of less than 12 kA/m. A coil is provided that has a structure in which by coating a winding with the magnetite-containing resin, a magnetite-containing resin layer is formed.

Abstract: A piezoelectric power generator that includes a first elastic body, which deforms along a first direction x upon receiving a stress, and a piezoelectric power-generating element. A second elastic body is arranged on a y1 side of the first elastic body and a piezoelectric element is fixed to a y1-side surface of the second elastic body. When the first elastic body bends into a shape that is concave toward the y1 side, the second elastic body receives a stress from the first elastic body. When the first elastic body bends into a shape that is convex toward the y1 side, the second elastic body does not receive a stress from the first elastic body. The piezoelectric power generator further includes a vibration suppressing member that is arranged between the first elastic body and the second elastic body and suppresses bending mode vibration of the second elastic body.

Abstract: An antenna device that includes coil antennas each having a coil conductor wound around a winding axis and a planar conductor including a surface and an edge end portion, the surface extending along the winding axis of the coil conductor, the edge end portion being adjacent to a coil opening of the coil conductor. A current flowing through the coil conductor induces a current in the planar conductor, this current produces a magnetic flux in a direction normal to the planar conductor, and thus the planar conductor acts as a booster antenna. The antenna device has directivity in the direction normal to the planar conductor because the magnetic flux produced by the coil antennas and that produced by the planar conductor are combined. This enables the antenna device to occupy a small area while achieving a predetermined communication distance.