Abstract: A power transfer system includes a power transmission device and a power reception device. A central conductor and a peripheral conductor are formed near the upper surface of a casing of the power transmission device. The peripheral conductor surrounds the central conductor in an insulated state from the central conductor. An alternating voltage generating circuit is provided for the power transmission device and applies an alternating voltage between the central conductor and the peripheral conductor. A central conductor and a peripheral conductor are formed near the lower surface of a casing of the power reception device. The peripheral conductor surrounds the central conductor in an insulated state from the central conductor. A load circuit is provided for the power reception device, and a voltage induced between the central conductor and the peripheral conductor is applied to the load circuit.

Abstract: A component-embedded resin substrate (1) includes a plurality of resin layers (2) made of a first resin and laminated on one another, and a component (3) arranged to be surrounded by each resin layer (2) in a first group (8) which is a group of two or more resin layers arranged successively in a thickness direction included in the plurality of resin layers (2). An auxiliary resin portion (9) made of a second resin different from the first resin is arranged to be in contact with and along at least one of surfaces of the component (3).

Abstract: In an electronic component, capacitor conductors include linear portions parallel or substantially parallel to a lower surface of a laminate, and lead-out portions led out respectively from the linear portions to the lower surface. Outer electrodes are disposed on the lower surface and cover exposed portions where the lead-out portions are exposed at the lower surface, respectively. At least one of the linear portions includes a groove, which is recessed in a direction away from the lower surface, in a region thereof overlapping with the corresponding outer electrode when looking at the electronic component in a plan view from a z-axis direction.

Abstract: An RFIC element includes a capacitance therein. By this capacitance and an inductance of a loop-shaped conductor, an LC resonant circuit is provided. When UHF-band high-frequency power is supplied to the loop-shaped conductor from the RFIC element, the loop-shaped conductor is coupled to a flat conductor in an electromagnetic field by a current flowing through the loop-shaped conductor, and induced currents flow through the flat conductor. By propagation of the induced currents through the flat conductor, the flat conductor acts as a radiation element. It is preferred that the dimension in the longitudinal direction of the flat conductor be a half wavelength of the used frequency band. Accordingly, the flat conductor acts as a half-wave radiation element.

Abstract: The disclosure describes a compact coil antenna that can operate even if the coil antenna is arranged closely to its conductor plate, and that has a high degree of coupling with a target antenna. A lower coil conductor part and an upper coil conductor part each have a substantially rectangular and spiral form, and the inner end of the lower coil conductor part connects to the inner end of the upper coil conductor part to be connected in series to the inner end of the upper coil conductor part. In the lower coil conductor part and the upper coil conductor part, the arrangement interval in parallel-to-axis parts including segments that are parallel to the direction of the axis of a magnetic-material core is shorter than the arrangement interval of segments in orthogonal-to-axis parts that are orthogonal to the axis of the magnetic-material core.

Abstract: A first paste film containing a metal powder and non-vitreous inorganic oxide is formed on a glass ceramic green sheet, and a second paste film containing a metal powder is formed on the first paste film to cover at least the edge portion of the first paste film. Then the glass ceramic green sheet and the first and second paste films are fired. As a result, a surface electrode is obtained, and then a plating layer is formed on the surface electrode. The second paste film contains less non-vitreous inorganic oxide than the first paste film and the abundance ratio of the non-vitreous inorganic oxide in the surface electrode is lower in a region bordering the plating layer than in a region bordering the glass ceramic layer at least in an edge portion of the surface electrode.

Abstract: A thermoelectric conversion element includes a p-type metal thermoelectric conversion material containing a metal as its main constituent, an n-type oxide thermoelectric conversion material containing an oxide as its main constituent, and a composite oxide insulating material containing a composite oxide as its main constituent. The p-type metal thermoelectric conversion material and the n-type oxide thermoelectric conversion material are directly bonded in a region of a junction plane between the p-type metal thermoelectric conversion material and the n-type oxide thermoelectric conversion material, and the p-type metal thermoelectric conversion material and the n-type oxide thermoelectric conversion material are bonded to each other with the composite oxide insulating material interposed therebetween so as to define a pn conjunction pair in the other region of the junction plane. A perovskite-type oxide is used as the n-type oxide thermoelectric conversion material.

Abstract: A measurement structure including an aperture array structure made of a metal and having a plurality of aperture portions, and a support base supporting the aperture array structure. The measurement structure is used in a measuring method by applying an electromagnetic wave to the measurement structure on which a specimen is held, detecting frequency characteristics of the electromagnetic wave transmitted through the measurement structure or reflected by the measurement structure, and measuring characteristics of the specimen. At least a first part of a surface of the aperture array structure proximal to the support base is joined to the support base, and at least a second part of the surface of the aperture array structure defines at least part of the plurality of aperture portions, the second part of the surface being proximal to the support base and not in contact with the support base.

Abstract: Provided is a fuel cell having a long product life. In a fuel cell 1, an interlayer 53 is arranged between a portion of an interconnector 14 which is formed of Ag or an Ag alloy and a first electrode 33 containing Ni. The interlayer 53 is formed of an oxide containing Ni and Ti.

Abstract: A laminate body includes a plurality of ceramic layers and capacitor conductors embedded in the laminate body so as to be opposed to each other via one of the ceramic layers. The capacitor conductors are made of an Al-based material, and the capacitor conductors include narrow portions, respectively, which function as fuse elements. The narrow portions have an average width smaller than an average width of portions of the capacitor conductors other than the narrow portions. As a result, the electronic component has an improved capability to protect its function as a capacitor when a short circuit occurs between capacitor conductors.

Abstract: A circuit board includes an insulating layer with a surface on which a semiconductor element is to be mounted and wiring portions that are located on the insulating layer. The wiring portions includes upper wiring portions, lower wiring portions, and interlayer wiring portions. The upper wiring portions, the lower wiring portions, and the interlayer wiring portions are integrally defined by a single copper sheet. With this configuration, a circuit board capable of withstanding a large current and a method of manufacturing the circuit board are provided.

Abstract: A wireless IC device includes a radiating plate, a wireless IC chip, and a feeder circuit board, on which the wireless IC chip is mounted. The feeder circuit board includes a resonant circuit with an inductance element, and the resonant circuit is electromagnetically coupled with the radiating plate. The wireless IC chip is interposed between the radiating plate and the feeder circuit board.

Abstract: In a method for manufacturing a laminated ceramic electronic component, when a plating film to define an external terminal electrode is formed by plating exposed ends of a plurality of internal electrodes at a WT surface of a component main body, ingress of a plating solution may be caused from a gap between an end edge of the plating film and the component main body to decrease the reliability of a laminated electronic component obtained. An internal dummy electrode is provided around a region where the exposed ends of the plurality of internal electrodes are distributed in the WT surface of the component main body. The internal dummy electrode includes two LW-direction sections extending parallel or substantially parallel to each other in a direction along the LW surface, and two LT-direction sections extending parallel or substantially parallel to each other in a direction along the LT surface. The plating film is formed at least over the exposed end of the internal dummy electrode.

Abstract: A DC-DC converter includes a series circuit including a primary transformer coil and a main switch element connected between a power input terminal and a ground terminal. A secondary transformer coil is connected to a rectifying/smoothing circuit including rectification-side and commutation-side synchronous rectifiers, a smoothing capacitor, and a choke coil. The output voltage from the rectifying/smoothing circuit is supplied to a load connected to a power output terminal. An input voltage detection circuit detects the voltage between the power input terminal and the ground terminal, and supplies a detection signal to a VIN terminal of a switching control circuit. The switching control circuit performs PWM control to maintain a constant output voltage output to the load, reduces the switching frequency when the input voltage input to the VIN terminal is low, and increases the switching frequency in accordance with an increase in the input voltage.

Abstract: A method for manufacturing a laminated ceramic capacitor includes a step of preparing a laminate which has a first principal surface, a second principal surface, a first end surface, a second end surface, a first side surface, and a second side surface and which includes insulating layers and internal electrodes having end portions exposed at the first or second end surface; a step of forming external electrodes on the first and second end surfaces such that plating deposits are formed on the exposed end portions of the internal electrodes so as to be connected to each other; and a step of forming thick end electrodes electrically connected to the external electrodes such that a conductive paste is applied onto edge portions of the first and second principal surfaces and first and second side surfaces of the laminate and then baked.

Abstract: An electronic component and manufacturing method for preparing an electronic component includes providing a first insulator layer having a first nickel content rate. A coil conductor and a second insulator layer having a first bismuth content rate and a second nickel content rate higher than the first nickel content rate are provided on the first insulator layer. The first insulator layer, the coil conductor, and the second insulator layer constitute a first unit layer. The first unit layer and an exterior insulator layer are laminated to obtain a laminate. After a step of firing the laminate, a nickel content rate in a first portion of the first insulator layer, the first portion being sandwiched between the coil conductors from both sides facing in a lamination direction, is lower than a nickel content rate in a second portion of the first insulator layer other than the first portion.

Abstract: Provided is a solid oxide fuel cell capable of achieving high power generation efficiency. A first separator is arranged on an oxidant gas electrode. In the first separator, an oxidant gas channel for supplying an oxidant gas to the oxidant gas electrode is formed. A second separator body is arranged on a fuel electrode In the second separator, a fuel gas channel for supplying a fuel gas to the fuel electrode is formed. The first separator is configured such that the width of the oxidant gas channel decreases stepwise or continuously with distance from the oxidant gas electrode. The second separator is configured such that the width of the fuel gas channel decreases stepwise or continuously with distance from the fuel electrode.

Abstract: A method for producing an electronic component module prevents a space from collapsing. The method includes a step of preparing an electronic component including an element substrate, a drive device formed on a principal surface of the element substrate, and a protection device covering the drive device so as to form a space around the drive device; a step of fixing the electronic component on a common substrate such that a principal surface of the common substrate and another principal surface of the element substrate face each other; a step of fixing a reinforcing plate on the protection device of the electronic component; and a step of forming a resin layer on the principal surface of the common substrate such that the electronic component is contained therein.

Abstract: In a semiconductor integrated circuit apparatus and a radio-frequency power amplifier module, a log detection portion including multiple-stage amplifier circuits, multiple level detection circuits, adder circuits, and a linear detection portion including a level detection circuit are provided. Output current from the log detection portion and output current from the linear detection portion are multiplied by different coefficients and the results of the multiplication are added to each other to realize the multiple detection methods. For example, current resulting from multiplication of the output current from the log detection portion by ×6/5 is added to the output current from the linear detection portion to realize a log detection method and, current resulting from multiplication of the output current from the log detection portion by ×1/5 is added to current resulting from multiplication of the output current from the linear detection portion by ×3 to realize a log-linear detection method.

Abstract: Provided is a fuel cell having a long product life. In the fuel cell, an interlayer is arranged between a portion of an interconnector which contains at least one of Ag, Pd, Pt, Fe, Co, Cu, Ru, Rh, Re and Au and a first electrode containing Ni. The interlayer is formed of a conductive ceramic.