Abstract: A transmission circuit includes a first impedance circuit, a second impedance circuit, and a phase shifter. Each of the first impedance circuit and the second impedance circuit includes a register circuitry and a control circuitry that controls a resistance value of the register circuitry. The first impedance circuit is configured to output a reflected wave of an input signal to the phase shifter. The phase shifter is configured to shift a phase of the input signal to input the input signal to the first impedance circuit and to shift a phase of the reflected wave of the input signal output from the first impedance circuit to output the reflected wave to the combiner circuit. The second impedance circuit is configured to output the reflected wave of the input signal to the combiner circuit.

Abstract: A combiner circuit includes a transmission circuit to be connected to an antenna, and a control circuit configured to control impedance of the transmission circuit. The transmission circuit includes multiple impedance circuits having different impedances from each other, and multiple switch elements, each of which is connected to a corresponding one of the multiple impedance circuits. The control circuit includes multiple comparators, each of which is connected to a corresponding one of the multiple switch elements, and a voltage divider circuit including multiple resistive elements, each of which is configured to divide an input reference voltage and output a divided voltage power to a corresponding one of the multiple comparators.

Abstract: A transmission circuit includes: a plurality of impedance circuits having impedances different from each other, a plurality of first switch elements, any one of which is being connected to a respective one of the plurality of impedance circuits, and a first control circuit configured to control opening and closing of the plurality of first switch elements. The first control circuit is configured to be controllable to selectively change the opening and closing of the plurality of first switch elements and to rotate a reflection coefficient of an output terminal on an antenna side of the transmission circuit in a complex plane.

Abstract: A communication module includes an antenna, a transmission circuit, a reception circuit, and a controller. The antenna includes a first antenna element at a transmission side and a second antenna element at a reception side and has an isolation characteristic between the first antenna element and the second antenna element. The transmission circuit is connected to the first antenna element. The reception circuit is connected to the second antenna element. The antenna includes a first variable phase unit configured to vary a phase of a transmission wave to be transmitted from the first antenna element and a second variable phase unit configured to vary a phase of a reception wave to be received by the second antenna element. The controller controls at least one of the first variable phase unit or the second variable phase unit to control an isolation of the antenna.

Abstract: A wireless communication device includes an antenna and is used for storage as an electrical conductive body. The antenna includes a first conductor and a second conductor, one or more third conductors, a fourth conductor, and a feeding line. The first conductor and the second conductor face each other in a first axis. The one or more third conductors are located between the first conductor and the second conductor and extend in the first axis. The fourth conductor is connected to the first conductor and the second conductor and extends in the first axis. The feeding line is connected to any one of the third conductors. The first conductor and the second conductor are capacitively coupled to each other via the third conductor. The fourth conductor faces a conductor part of the storage.

Abstract: An antenna is installed on an installation surface of a wheel. The antenna includes a first conductor, a second conductor, one or more third conductors, a fourth conductor, and a feeding line. The first conductor and the second conductor face each other in a first axis. The one or more third conductors are located between the first conductor and the second conductor and extend in the first axis. The fourth conductor is connected to the first conductor and the second conductor and extends in the first axis. The feeding line is electromagnetically connected to the third conductor. The first conductor and the second conductor are capacitively connected via the third conductor. A surface of the fourth conductor faces the installation surface of the wheel in a second axis perpendicular to the first axis.

Abstract: An antenna is installed on an installation surface of a wheel. The antenna includes a first conductor, a second conductor, one or more third conductors, a fourth conductor, and a feeding line. The first conductor and the second conductor face each other in a first axis. The one or more third conductors are located between the first conductor and the second conductor and extend in the first axis. The fourth conductor is connected to the first conductor and the second conductor and extends in the first axis. The feeding line is electromagnetically connected to the third conductor. The first conductor and the second conductor are capacitively connected via the third conductor. A surface of the fourth conductor faces the installation surface of the wheel in a second axis perpendicular to the first axis.

Abstract: An antenna is mounted to a pole. The antenna includes a first conductor, a second conductor, a third conductor, a fourth conductor, and a feeding line. The second conductor faces the first conductor in a first direction. The third conductor is located between the first conductor and the second conductor, separated from the first conductor and the second conductor, and extends in the first direction. The fourth conductor is connected to the first conductor and the second conductor and extends in the first direction. The feeding line is electromagnetically connected to the third conductor. The antenna is mounted to the pole such that the first direction is substantially parallel to a direction in which the pole extends.

Abstract: ABSTRACT One example of embodiments of the present disclosure includes a structure. The structure includes first pair conductors and at least one unit structure. The first pair conductors are separated from each other in a first direction. The unit structure is positioned between the first pair conductors. The unit structure includes a second conductor and a third conductor. The unit structure includes at least one unit resonator. The third conductor extends in an xy plane including an x direction. The third conductor is electrically connected to the first pair conductors. The third conductor is configured as a reference potential of the structure. The unit resonator overlaps with the third conductor in a z direction intersecting with the xy plane. The unit resonator is configured to uses the third conductor as the reference potential.

Abstract: A wireless communication device includes an antenna and is used for storage as an electrical conductive body. The antenna includes a first conductor and a second conductor, one or more third conductors, a fourth conductor, and a feeding line. The first conductor and the second conductor face each other in a first axis. The one or more third conductors are located between the first conductor and the second conductor and extend in the first axis. The fourth conductor is connected to the first conductor and the second conductor and extends in the first axis. The feeding line is connected to any one of the third conductors. The first conductor and the second conductor are capacitively coupled to each other via the third conductor. The fourth conductor faces a conductor part of the storage.

Abstract: An information processing apparatus includes a communication interface and a controller. The communication interface receives, from a sensor container, information indicating an orientation of the sensor container. The controller, based on the information indicating the orientation of the sensor container, calculates a calculated value indicating a remaining amount of contents of the sensor container. The controller determines an estimated value of the remaining amount on the basis of the calculated value. The communication interface transmits the estimated value indicating the remaining amount to an external device. When the calculated value indicating the remaining amount decreases by a first predetermined value or more within a predetermined time period, the controller does not perform the determination of the estimated value on the basis of the calculated value.

Abstract: One example of embodiments of the present disclosure includes a structure. The structure includes first pair conductors and at least one unit structure. The first pair conductors are separated from each other in a first direction. The unit structure is positioned between the first pair conductors. The unit structure includes a second conductor and a third conductor. The unit structure includes at least one unit resonator. The third conductor extends in an xy plane including an x direction. The third conductor is electrically connected to the first pair conductors. The third conductor is configured as a reference potential of the structure. The unit resonator overlaps with the third conductor in a z direction intersecting with the xy plane. The unit resonator is configured to uses the third conductor as the reference potential.

Abstract: One example of embodiments of the present disclosure includes a structure. The structure includes first pair conductors and at least one unit structure. The first pair conductors are separated from each other in a first direction. The unit structure is positioned between the first pair conductors. The unit structure includes a second conductor and a third conductor. The unit structure includes at least one unit resonator. The third conductor extends in an xy plane including an x direction. The third conductor is electrically connected to the first pair conductors. The third conductor is configured as a reference potential of the structure. The unit resonator overlaps with the third conductor in a z direction intersecting with the xy plane. The unit resonator is configured to uses the third conductor as the reference potential.

Abstract: A communication apparatus includes an antenna, a wireless module that supplies power to the antenna to cause the antenna to emit electromagnetic waves having a predetermined frequency band, a structural member having a conductor surface on at least a portion thereof, and at least one resonator including a plurality of unit conductors and having a resonance frequency band that includes a resonance frequency. The at least one resonator is positioned between the conductor surface and the antenna. The predetermined frequency band is included in the resonance frequency band.

Abstract: A communication device including a signal generator configured to generate a transmitting signal that uses a plurality of frequency bands, an amplifier configured to amplify and output the transmitting signal, a plurality of duplexers configured to separate and output a receiving signal and the transmitting signal, and a controller. The controller is configured to control power amplification of the transmitting signal by the amplifier based on the transmitting signal output from the duplexer, and control power amplification of the transmitting signal by the amplifier based on the transmitting signal input to the duplexer from the amplifier when a temperature is a predetermined value or more or the frequency of the transmitting signal is a predetermined value or more.

Abstract: An information processing apparatus includes a communication interface and a controller. The communication interface receives, from a sensor container, information indicating an orientation of the sensor container. The controller, based on the information indicating the orientation of the sensor container, calculates a calculated value indicating a remaining amount of contents of the sensor container. The controller determines an estimated value of the remaining amount on the basis of the calculated value. The communication interface transmits the estimated value indicating the remaining amount to an external device. When the calculated value indicating the remaining amount decreases by a first predetermined value or more within a predetermined time period, the controller does not perform the determination of the estimated value on the basis of the calculated value.

Abstract: The disclosed communication device includes a signal generator configured to generate a transmitting signal that uses a plurality of frequency bands, an amplifier configured to amplify and output the transmitting signal, a plurality of duplexers configured to separate and output a receiving signal and the transmitting signal, a first detection means configured to detect the transmitting signal output from the duplexer, a controller configured to control power amplification of the transmitting signal output by the amplifier based on the detection by the first detection means, and a second detection means configured to detect the transmitting signal input to the duplexer from the amplifier, wherein the controller controls power amplification of the transmitting signal by the amplifier based on the detection by the second detection means when the temperature is a predetermined value or more or the frequency of the transmitting signal is a predetermined value or more.

Abstract: A diplexer that can demultiplex and multiplex two signals having wide frequency bands, and a wireless communication module and a wireless communication apparatus using the same, are provided. A diplexer has a multilayer body including a first interlayer, a second interlayer and a third interlayer. On the first interlayer, first resonant electrodes are disposed in an interdigital form. On the second interlayer, a plurality of second resonant electrodes are disposed in an interdigital form. On the third interlayer, there are disposed an input coupling electrode that faces the input-stage first resonant electrode and the input-stage second resonant electrode in an interdigital form, a first output coupling electrode that faces the output-stage first resonant electrode in an interdigital form, and a second output coupling electrode that faces the output-stage second resonant electrode.

Abstract: An ultra-wideband bandpass filter having two adequately-wide pass bands, and a wireless communication module and a wireless communication apparatus which employ the bandpass filter are provided. In a bandpass filter, first resonant electrodes are arranged on a first interlayer of a multilayer body in an interdigital form; a plurality of second resonant electrodes are arranged on a second interlayer in an interdigital form; and an input coupling electrode and an output coupling electrode are arranged on a third interlayer located between the first interlayer and the second interlayer. The input coupling electrode faces an input-stage first resonant electrode and an input-stage second resonant electrode in an interdigital form. The output coupling electrode faces an output stage first resonant electrode and an output-stage second resonant electrode in an interdigital form.

Abstract: Provided are a transfer gate circuit that has reduced disturbance in an output waveform thereof, a power combining circuit using the transfer gate circuit, and a transmission device and a communication device that use the power combining circuit. The transfer gate circuit includes: output terminals (3, 4); a transistor (5) including a drain connected to the output terminal (3); a transistor (6) including a drain connected to the output terminal (4); transistors (7, 8) each including a drain connected to the output terminal (3) and each including a source connected to a ground potential; and transistors (9, 10) each including a drain connected to the output terminal (4) and each including a source connected to the ground potential.