Abstract: A variable capacitor is provided which is appropriate for suppressing fluctuation in driving voltage characteristic and for achieving a larger variation ratio of static capacitance. The variable capacitor includes a fixed electrode and a movable electrode. The fixed electrode includes a first opposing face, while the movable electrode includes a second opposing face that faces the first opposing face. The movable electrode further includes a curved portion that protrudes toward the fixed electrode. The variable capacitor also includes a dielectric pattern provided on the first opposing face.

Abstract: An integrated electronic device includes a substrate, passive components, pads for external connection, and three-dimensional wiring. The passive components includes a multi-stage coil inductor provided on the substrate. The multi-stage coil inductor has a plurality of coils disposed in several layers. Mutually adjacent coil wires are spaced-apart from each other. The three-dimensional wiring includes a first wiring portion which extends on the substrate, a second wiring portion which extends off the substrate but along the substrate, and a third wiring portion connecting with the first wiring portion and the second wiring portion.

Abstract: A micro-switching device includes a base substrate, a fixing member on the substrate, a movable part having an end fixed to the fixing member and extending along the substrate, a movable contact electrode provided on the movable part and facing away from the substrate, a pair of stationary contact electrodes bonded to the fixing member and including a region facing the movable contact electrode, a movable driver electrode between the movable contact electrode and the stationary end on the movable part at a surface facing away from the substrate, and a stationary driver electrode bonded to the fixing member and including an elevated portion having a region facing the movable driver electrode. The elevated portion is provided with steps facing the movable driver electrode, where the steps are closer to the substrate as they are farther from the movable contact electrode.

Abstract: An electronic device includes a substrate including an active layer, a signal electrode formed on a surface of the active layer, a first driving electrode that is formed on the surface of the active layer and is connected to a ground, and a second driving electrode including a first part that is formed on the surface of the active layer and a second part that is connected to the first part and is provided above the first driving electrode. The substrate is provided with a loop-like groove that penetrates through the active layer and encompasses the first part.

Abstract: An integrated electronic device includes a substrate, passive components, pads for external connection, and three-dimensional wiring. The passive components includes a multi-stage coil inductor provided on the substrate. The multi-stage coil inductor has a plurality of coils disposed in several layers. Mutually adjacent coil wires are spaced-apart from each other. The three-dimensional wiring includes a first wiring portion which extends on the substrate, a second wiring portion which extends off the substrate but along the substrate, and a third wiring portion connecting with the first wiring portion and the second wiring portion.

Abstract: A solid-liquid separator using a roller system includes a casing, rollers disposed within the casing and each provided with a screen that is formed in the outer periphery thereof with plural pores for separating via the plural pores a solid substance from a solid-liquid substance disposed outside the rollers and filtering a liquid substance toward inside the rollers, inside drums each disposed along the inner circumference of each of the rollers, and a passageway which is formed by means of the screen and the inner drum and which is provided with an outlet. The liquid substance separated by means of the screen is allowed to flow along the passageway, collected at the outlet and discharged from the outlet.

Abstract: A solid-liquid separator using a roller system includes a casing, rollers disposed within the casing and each provided with a screen that is formed in an outer periphery thereof with plural pores, a supply device disposed outside the rollers for supplying into the casing under appropriate pressure a solid-liquid mixture to be separated into a solid component via the plural pores and a liquid component filtered inside, a casing wall disposed adjacent to the rollers after the solid-liquid mixture supplied with the supply device is passed through the rollers rotated, a discharge window formed in the casing wall for discharging the solid component, and a pressure application lid formed on the casing wall for stably applying prescribed pressure in a direction of closing the discharge window with a pressure application device.

Abstract: A variable capacitive element includes a first fixed electrode and a second fixed electrode that are insulated from each other, a movable electrode arranged to face the first fixed electrode and the second fixed electrode, a dielectric layer provided between the movable electrode and the first fixed electrode as well as the second fixed electrode, a first wiring part for applying a first driving voltage to the first fixed electrode with reference to a potential of the movable electrode, and a second wiring part for applying a second driving voltage to the second fixed electrode with reference to the potential of the movable electrode, the second driving voltage having a polarity different from a polarity of the first driving voltage.

Abstract: In a method for drive controlling a micro machine device including two electrodes opposing each other and a dielectric layer sandwiched therebetween, a control voltage in a rectangular waveform in which positive and negative polarities are alternately inverted is applied between the two electrodes. A current passing through the micro machine device due to the application of the control voltage are detected with respect to positive and negative sides, and parameters related to a capacitance of the micro machine device are acquired with respect to the positive and negative sides on the basis of the detected current. The control voltage is controlled so that the parameters acquired with respect to the positive and negative sides accord with each other. Thus, variation of the capacitance between the positive side and the negative side can be suppressed in switching drive of a variable capacitance device.

Abstract: A reciprocating compressor includes a motor having a motor shaft, four cylinders provided in perpendicular directions relative to an axial direction of the motor shaft, and four pistons Each piston has a piston head part and a rod part formed integrally with the piston head part. Each piston head part is fitted into one of the four cylinders in a reciprocable fashion. Each rod part is rotatably mounted to an eccentric shaft that is fixed to the motor shaft.

Abstract: An electronic component includes a substrate, and a capacitor unit on the substrate. The capacitor unit has a laminate structure including a first electrode layer provided on the substrate, a second electrode layer opposed to the first electrode layer, and a dielectric layer disposed between the first and the second electrode layers. The first electrode layer has a multilayer structure including an adhesion metal layer joined to the dielectric layer. The adhesion metal layer is provided with an oxide coating on a side of the dielectric layer.

Abstract: A micro movable device includes a base substrate, a fixed portion bonded to the base substrate, a movable portion having a fixed end connected to the fixed portion and extending along the base substrate, and a piezoelectric drive provided on the movable portion and the fixed portion on a side opposite to the base substrate. The piezoelectric drive has a laminate structure provided by a first electrode film contacting the movable portion and the fixed portion, a second electrode film and a piezoelectric film between the first and the second electrode films. At least one of the movable portion and the fixed portion is provided with a groove extending along the piezoelectric drive.

Abstract: A sheet-supplying device has a sheet-accommodating tray, a raising/lowering unit, a first position sensor, a second position sensor, a controlling unit. The raising/lowering unit raises and lowers the sheet-accommodating tray substantially. The first position sensor detects a first position indicating a position in the stacked direction of one end portion of a topmost sheet stacked in the sheet-accommodating tray. The second position sensor detects a second position indicating a position in the stacked direction of another end portion of the topmost sheet. The controlling unit controls the raising/lowering unit to raise or lower the sheet-accommodating tray based on both the first position detected by the first position sensor and the second position detected by the second position sensor so that one end of the topmost sheet in the stacked status is positioned at a prescribed position in the stacked direction.

Abstract: An electronic device includes a substrate, a stationary electrode provided above the substrate, a movable electrode that is provided to face the stationary electrode, a wall portion that is provided on the substrate and surrounds the movable electrode and the stationary electrode, a film member that is fixed to the wall portion and seals space including the movable electrode and the stationary electrode, and a support portion that is provided, on an inner side of the wall portion on the substrate, in addition to the movable electrode and the stationary electrode to support the film member from within the space.

Abstract: A method of making a microstructure with thin wall portions (T1-T3) includes a step of performing a first etching process to a material substrate having a laminate structure including a first conductive layer (11) and a second conductive layer (12) having a thickness of the thin wall portions (T1-T3), where the etching is performed from the side of the first conductive layer (11) thereby forming in the second conductive layer (12) pre thin wall portions (T1?-T3?) which has a pair of side surfaces apart from each other in an in-plane direction of the second conductive layer (12) and contact the first conductive layer (11). The method also includes a step of performing a second etching process from the side of the first conductive layer (11) for removing part of the first conductive layer (11) contacting the pre thin wall portions (T1?-T3?) to form the thin wall portions.

Abstract: A variable capacitance element provided with a substrate, a signal line provided on the substrate, a fixed electrode provided on the substrate, and a movable electrode. The movable electrode includes a movable portion that spans the signal line and extends to above the fixed electrode, and is movable with respect to the fixed electrode, and a fixed portion that is fixed to the fixed electrode across a dielectric layer.

Abstract: The electronic component includes a base material, a capacitor unit, and a wiring portion. The capacitor unit has a stacked structure including a first electrode portion provided on the base material, a second electrode portion including a first surface opposing the first electrode portion and a second surface opposite to the first surface, and a dielectric portion interposed between the electrode portions. The wiring portion includes a via portion having a surface on the base material side, and joined to the second surface of the second electrode portion via the surface on the base material side. The surface of the via portion on the base material side includes an extending portion extending outward of the periphery of the second surface of the second electrode portion.

Abstract: A capacitor manufacturing method provides variable capacitors whose capacitances remain stable under the influence of temperature change. Such a variable capacitor includes a fixed electrode, a movable electrode film facing the fixed electrode, and an anchor portion that provides partial connection between the fixed electrode and the movable electrode film. For making this variable capacitor, a first electrode is formed to serve as the fixed electrode. Then, an anchor portion is formed on the fixed electrode, and a sacrifice film is formed to cover the fixed electrode but partially expose the anchor portion. A second electrode is formed on the sacrifice film to serve as the movable electrode film, bonded to the anchor portion. Finally, the sacrifice film is removed.

Abstract: A filter includes a first resonance line and a second resonance line which extend from an input point where a high frequency signal is input, wherein an electrical propagation length L1 of the first resonance line is set at L1=[?1/4]×n and an electrical propagation length L2 of the second resonance line is set at L2=[?2/4]×n, wherein ?1 and ?2 are wavelengths of specified high frequency signals and n is positive odd number.

Abstract: There is provided a wireless communication apparatus configured to perform wireless communications with a counterpart apparatus by use of a data frame including a data transmission indication period and a data transmission period following the indication period. In the apparatus a normal power state and a low power consumption state are set as the operating states, and a normal power mode and a low power consumption mode are set as the power management modes. Further, in the normal power mode, the wireless communication apparatus is operated in the normal power state; and in the low power consumption mode, the wireless communication apparatus is operated in the normal power state during the data transmission indication period and in the low power consumption state during the data transmission period.