Abstract: According to one embodiment, a control apparatus includes a gate signal generation circuit, a transmitter, a receiver, and an error processing circuit. The gate signal generation circuit is configured to generate a gate signal to switch a state of a gate circuit. The transmitter is configured to transmit the generated gate signal. The receiver is configured to receive the transmitted gate signal. The error processing circuit is configured to process an error in the received gate signal and to output the gate signal to the gate circuit. A process delay by the error processing circuit is greater than a sampling period of the gate signal switching the state of the gate circuit and is equal to or less than a time to retain the state of the gate circuit.

Abstract: According to one embodiment, an antenna apparatus includes at least four first to Nth circularly polarized antennas in a planar shape; and phase adjustment circuitry adjusting phase relationship between first to Nth signals of the first to Nth circularly polarized antennas. The first to Mth circularly polarized antennas and the M+1th to Nth circularly polarized antennas are arranged at positions surface-symmetrical to each other. The first to Nth circularly polarized antennas are rotated in direction at first to Nth angles with respect to a first direction parallel to the first to Nth circularly polarized antennas. The phase adjustment circuitry is configured to set phases of the first to Mth signals to first to Mth phases corresponding to the first to Mth angles, and set phases of the M+1th to Nth signals to M+1th to Nth phases added by a first value to phases corresponding to the M+1th to Nth angles.

Abstract: According to one embodiment, an electronic apparatus includes a processor configured to estimate positions of a plurality of wireless devices from a plurality of position candidates based on position candidate information indicating the plurality of position candidates of the wireless devices, first communication information related to communication using a first electromagnetic wave between the plurality of wireless devices, and second communication information related to communication using a second electromagnetic wave between the plurality of wireless devices.

Abstract: According to one embodiment, in electronic apparatus, controller generates first and second control signals to control first and second controlled unit. First serial converter multiplexes the first and second control signals into first serial signal. First wireless transmitter transmits the first serial signal by first wireless signal in a chronologically continuous manner. First wireless receiver receives the first wireless signal. First parallel converter separates the first and second control signals from the first wireless signal received by first wireless receiver, to output the first control signal to first controlled unit, and to output the second control signal to second controlled unit.

Abstract: An antenna apparatus includes a first dielectric substrate including a first surface and a second surface opposite to the first surface, a radiating element located on the first surface or in the first dielectric substrate, a first electrode on the second surface, a first conductor provided through the first dielectric substrate from the first surface to the second surface, to connect electrically the radiating element and the first electrode, a second dielectric substrate including a third surface and a fourth surface opposite to the third surface, an adhesive layer between the second surface and the third surface, a second electrode on the third surface, a first signal line located on the fourth surface or in the second dielectric substrate, and a second conductor provided through the second dielectric substrate from the third surface to the fourth surface, to connect electrically the second electrode and the first signal line.

Abstract: According to one embodiment, an antenna apparatus includes at least four first to Nth circularly polarized antennas in a planar shape; and phase adjustment circuitry adjusting phase relationship between first to Nth signals of the first to Nth circularly polarized antennas. The first to Mth circularly polarized antennas and the M+1th to Nth circularly polarized antennas are arranged at positions surface-symmetrical to each other. The first to Nth circularly polarized antennas are rotated in direction at first to Nth angles with respect to a first direction parallel to the first to Nth circularly polarized antennas. The phase adjustment circuitry is configured to set phases of the first to Mth signals to first to Mth phases corresponding to the first to Mth angles, and set phases of the M+1th to Nth signals to M+1th to Nth phases added by a first value to phases corresponding to the M+1th to Nth angles.

Abstract: An antenna apparatus includes a first dielectric substrate including a first surface and a second surface opposite to the first surface, a radiating element located on the first surface or in the first dielectric substrate, a first electrode on the second surface, a first conductor provided through the first dielectric substrate from the first surface to the second surface, to connect electrically the radiating element and the first electrode, a second dielectric substrate including a third surface and a fourth surface opposite to the third surface, an adhesive layer between the second surface and the third surface, a second electrode on the third surface, a first signal line located on the fourth surface or in the second dielectric substrate, and a second conductor provided through the second dielectric substrate from the third surface to the fourth surface, to connect electrically the second electrode and the first signal line.

Abstract: A wireless device according to one aspect of the present invention includes an antenna, a focuser, and an absorber. The focuser includes a first and a second region. One of the regions transmits radio waves, and the other blocks them or changes their phase. In a plan view from the antenna, the shape of the first region is a circle and the shape of the second region is an annular ring with an inner diameter equal to the diameter of the first region. The antenna is on the center axis of the circle. A part of the absorber is present between a first plane where the antenna is present and a second plane on which the second region is present. The absorber is present at a position away from the antenna by the outer circumference of the annular ring or longer in a direction perpendicular to the axis.

Abstract: According to an embodiment, a signal conversion apparatus includes a control information generator and a selector. The control information generator generates first control information based on rate information indicating transmission rates of original signals. The first control information designates a first timing at which each of the original signals is sampled. The selector selects each of the sampled signals at a timing based on the first timing. The original signal group includes a first original signal at a first transmission rate and a second original signal at a second transmission rate. The first transmission rate is higher than the second transmission rate. The frequency of allocating the first timing to the first original signal is higher than a frequency of allocating the first timing to the second original signal.

Abstract: A wireless device according to one aspect of the present invention includes an antenna, a focuser, and an absorber. The focuser includes a first and a second region. One of the regions transmits radio waves, and the other blocks them or changes their phase. In a plan view from the antenna, the shape of the first region is a circle and the shape of the second region is an annular ring with an inner diameter equal to the diameter of the first region. The antenna is on the center axis of the circle. A part of the absorber is present between a first plane where the antenna is present and a second plane on which the second region is present. The absorber is present at a position away from the antenna by the outer circumference of the annular ring or longer in a direction perpendicular to the axis.

Abstract: A wireless device according to one aspect of the present invention includes an RF signal circuit, an antenna, and a focuser. The focuser includes a first and a second region. One of the regions transmits radio waves, and the other blocks radio waves or changes the phase of radio waves. In a plan view from the antenna, the shape of the first region is a circle and the shape of the second region is an annular ring with an inner diameter equal to the diameter of the first region. The antenna is on the center axis of the circle. The circuit is arranged point asymmetrically across the axis in a plan view from the first region. At least part of the circuit is included in an orthogonal projection of the first region to a plane which is vertical to the axis and on which the circuit is present.

Abstract: According to one embodiment, a signal conversion device includes a first serial-parallel converter, a second serial-parallel converter, a first buffer, a second buffer, a clock generator, and a selection output part. The first serial-parallel converter receives a first serial signal, generates a first clock signal I, generates a first parallel signal, and generates first status information including first information. The second serial-parallel converter receives a second serial signal, generates a second clock signal, generates a second parallel signal, and generates second status information including second information. The first buffer stores the first parallel signal. The second buffer stores the second parallel signal. The clock generator generates an output clock signal. The selection output part uses the first status information and the second status information to output a signal based on one parallel signal of the first parallel signal or the second parallel signal.

Abstract: According to an embodiment a signal multiplexing apparatus includes a clock selector, a data selector, and a converter. The clock selector selects either a first clock signal synchronized with a first data signal or a second clock signal different from the first clock signal to obtain a third clock signal. The data selector selects a subset of a first signal set at each timing controlled by the third clock signal to generate a first parallel signal. The first signal set includes the first data signal and a second data signal whose speed is lower than a speed of the first data signal. The converter converts the first parallel signal into a serial signal in accordance with the third clock signal.

Abstract: According to one embodiment, a wireless apparatus includes a mounting board, a semiconductor package and a first layer. The mounting board has a first surface and a second surface opposite to the first surface. The semiconductor package comprises at least one antenna and is mounted on the first surface. The first layer is a conductor formed on the second surface or between the first surface and the second surface, at least one portion of an edge of the first layer being concaved if the antenna is arranged closer to the edge than the center of the first layer when seen in thickness direction of the mounting board.

Abstract: According to one embodiment, a wireless apparatus includes a first antenna and a second antenna. The first antenna is positioned on a first imaginary plane orthogonal to a rotation axis and includes a first main radiating element. The second antenna is positioned on a second imaginary plane orthogonal to the rotation axis and opposite to the first imaginary plane at a first space from the first imaginary plane and includes a second main radiating element. The second antenna is rotatable around the rotation axis and performs at least one of transmission and reception of electromagnetic wave to and from the first antenna, and at least one of the first main radiating element and the second main radiating element is displaced from the rotation axis.

Abstract: According to an embodiment a signal multiplexing apparatus includes a clock selector, a data selector, and a converter. The clock selector selects either a first clock signal synchronized with a first data signal or a second clock signal different from the first clock signal to obtain a third clock signal. The data selector selects a subset of a first signal set at each timing controlled by the third clock signal to generate a first parallel signal. The first signal set includes the first data signal and a second data signal whose speed is lower than a speed of the first data signal. The converter converts the first parallel signal into a serial signal in accordance with the third clock signal.

Abstract: According to an embodiment, an electronic device includes a first board, a first ground layer, a first antenna, a second board, a second ground layer, a second antenna, a shield pipe and an electromagnetic wave absorber. When viewed from an axis direction of the shield pipe, an outermost edge of an internal wall at a first end is arranged inside an outermost edge of the first ground layer, the first antenna is arranged inside the outermost edge of the internal wall at the first end, an outermost edge of the internal wall at a second end is arranged inside an outermost edge of the second ground layer, and the second antenna is arranged inside the outermost edge of the internal wall at the second end.

Abstract: According to one embodiment, a semiconductor device includes a substrate, a first semiconductor chip, a second semiconductor chip, and a discrete element part. The first semiconductor chip is arranged on the substrate and includes a first electrode group. The second semiconductor chip is arranged on the substrate and includes a second electrode group, at least one of electrodes included in the second electrode group being connected to at least one of electrodes included in the first electrode group via at least one bonding wire. The discrete element part is arranged on the substrate and under the at least one bonding wire.

Abstract: According to one embodiment, an antenna device includes a feeding portion, first and second wire-like metal portions, third and fourth plate-like metal portions and a fifth metal portion. One ends of the first and second wire-like metal portions are connected to the feeding portion. The third and fourth plate-like metal portions are respectively connected to the other ends of the first and second metal portions and disposed separately from each other with a predetermined distance therebetween. The fifth metal portion is configured to connect the third metal portion to the fourth metal portion. A total electrical length of the first to fifth metal portions is 3/2 wavelength at operating frequency band.

Abstract: A stationary proximity wireless communication apparatus has an electromagnetic-wave transmitting and receiving part comprising a first indicator that indicates a zone to place a portable proximity wireless communication apparatus and an antenna that is installed in the zone to emit electromagnetic waves having directivity in a direction of a recommended optimum position suitable to place the portable proximity wireless communication apparatus in the zone from a position different from the recommended optimum position, and a wireless communication part configured to perform modulation and demodulation processes of electromagnetic waves transmitted and received at the antenna.