Abstract: A superconducting antenna device of an embodiment includes an array antenna made by stacking a flat antenna having one or more antennas made of a superconducting material and a ground pattern on a low-loss dielectric substrate from a short wave band to an extremely-high frequency band, a vacuum chamber configured to accommodate the array antenna, a refrigerator configured to cool the array antenna, and a vacuum insulating window configured to pass an electromagnetic wave from a short wave band to an extremely-high frequency band in a direction of directivity of the array antenna in the vacuum chamber.

Abstract: According to one embodiment, an array antenna apparatus includes a distributor, transmission phase shifters, transmission amplifiers, transmission filters, transmission/reception switches, limiters, reception filters, low-noise amplifiers, reception phase shifters, a combiner, a vacuum vessel, a refrigerating unit, and a cooling plate.

Abstract: A magnetic resonance imaging apparatus of an embodiment includes a housing, a static magnet field source having a superconducting coil or a permanent magnet, and a superconducting array antenna which are provided inside of the housing. The superconducting array antenna includes an A/D conversion element configured to convert a received analog signal into a digital signal.

Abstract: A magnetic resonance imaging apparatus of an embodiment includes a housing, a static magnetic field source having a superconducting coil or a permanent magnet inside the housing, and a superconducting array antenna inside the housing.

Abstract: A superconducting antenna device of an embodiment includes an array antenna made by stacking a flat antenna having one or more antennas made of a superconducting material and a ground pattern on a low-loss dielectric substrate from a short wave band to an extremely-high frequency band, a vacuum chamber configured to accommodate the array antenna, a refrigerator configured to cool the array antenna, and a vacuum insulating window configured to pass an electromagnetic wave from a short wave band to an extremely-high frequency band in a direction of directivity of the array antenna in the vacuum chamber.

Abstract: An inspection apparatus of an embodiment includes a transmitting antenna device connected to a transmitting unit including a transmitting device configured to transmit a microwave, and a receiving antenna device connected to a receiving unit including a receiving device. Each of the transmitting antenna device and the receiving antenna device faces a subject to be inspected. The receiving antenna device receives at least one of a microwave transmitted from the transmitting antenna device and penetrating the subject to be inspected, a microwave of which phase has been delayed, and a microwave diffracted in the subject to be inspected. The receiving unit is a directional antenna.

Abstract: A superconducting filter device of an embodiment includes: a high-frequency filter includes a superconducting element, and a dielectric member; and a drive tool configured to adjust a distance between the superconducting element and the dielectric member. The dielectric member and the drive tool take both a connection state and a separation state.

Abstract: A filter according to embodiments includes n resonators, an input line, and an output line. Each of the resonators includes a first comb-like structure, a second comb-like structure, and a connection line that connect the first and the second comb-like structure. The first and second comb-like structures have a plurality of first lines and a second line that is connected to one end of the first lines. The first lines of the first and the second comb-like structures are arranged parallel to each other. The connection line has bending portions. Further, a second comb-like structure of a k-th resonator and a first comb-like structure of a (k+1)-th resonator are arranged so as to have an interlaced arrangement, and a second comb-like structure of the (k+1)-th resonator and a first comb-like structure of a (k+2)-th resonator are arranged so as to have an interlaced arrangement.

Abstract: A heat insulating transmission line includes a first waveguide with a first aperture end, a second waveguide with a second aperture end, and a reflector. The second waveguide is arranged coaxially with the first waveguide. The second aperture end faces the first aperture end through an air gap. The reflector is provided outside the air gap, and controls radiation power from the air gap. In addition, the reflector is substantially parallel to a portion of a virtual plane connecting an inner wall of the first aperture end of the first waveguide and an inner wall of the second aperture end of the second waveguide. When a mean frequency of a signal transmitting through the heat insulating transmission line is expressed as ?, a distance between the virtual surface and the reflector is not less than N×?/2?0.05? and not more than N×?/2+0.2? (N is a positive integer).

Abstract: In one embodiment, an active array antenna device includes: M (M?2) bandpass filters to filter signals received by M antenna elements; M low noise amplifiers to amplify the filtered received signals; M distributors to distribute respective of the M amplified signals into N (N?2) distributed signals; M sets of N phase shifters provided for respective of the M distributors to shift phases of the N distributed signals; M sets of N attenuators to attenuate N phase-shift signals; N beam synthesis circuits provided for N sets of the M attenuators to synthesize a beam by summing attenuator outputs from the M attenuators corresponding to the M distributors; a heat insulating container accommodating the low noise amplifiers and the receiving filters and formed of a superconductor material; and a cooler to cool the receiving filters and the low noise amplifiers to make the receiving filters in a superconducting state.

Abstract: According to one embodiment, an antenna apparatus includes an antenna, a duplexer, a reception circuit, a phase controller, a combining unit, a thermally insulating container and a cooling unit. A reception circuit configured to separate a frequency of a signal received by the antenna into a plurality of reception pathways via BPFs (Band Pass Filters) corresponding to the number of transmittable frequencies, extract the reception signals, amplify with low noise the extracted reception signals by an LNA (Low Noise Filter) for the separated reception pathways, select a reception pathway corresponding to the transmission frequency from the separated reception pathways, and output the reception signal amplified with low noise to the selected reception pathway.

Abstract: According to one embodiment, a magnetic resonance measuring apparatus includes a signal source, a transmitter, a receiver, a bandpass filter, a receiving circuit and a magnetic field generator. The signal generator is configured to generate a microwave signal. The transmitter is configured to transmit the signal from the signal source to a test sample. The receiver is opposed to the transmitter and configured to receive the signal from the transmitter via the sample. The bandpass filter has a bandwidth and is configured to extract the signal. The receiving circuit is configured to amplify the extracted signal through the bandpass filter and process the amplified signal. The magnetic field generator is configured to apply a magnetic field to the sample. The bandwidth satisfies a condition, P+Gtx+Grx?(?tx+?d1+?d2+?d3+?rx)>10×log(k×T×BW×109).

Abstract: A heat insulating transmission line includes a first waveguide with a first aperture end, a second waveguide with a second aperture end, and a reflector. The second waveguide is arranged coaxially with the first waveguide. The second aperture end faces the first aperture end through an air gap. The reflector is provided outside the air gap, and controls radiation power from the air gap. In addition, the reflector is substantially parallel to a portion of a virtual plane connecting an inner wall of the first aperture end of the first waveguide and an inner wall of the second aperture end of the second waveguide. When a mean frequency of a signal transmitting through the heat insulating transmission line is expressed as ?, a distance between the virtual surface and the reflector is not less than N×?/2?0.05? and not more than N×?/2+0.2? (N is a positive integer).

Abstract: A heat insulating transmission line includes a first waveguide with a first aperture end, a second waveguide with a second aperture end, and a reflector. The second waveguide is arranged coaxially with the first waveguide. The second aperture end faces the first aperture end through an air gap. The reflector is provided outside the air gap, and controls radiation power from the air gap. In addition, the reflector is substantially parallel to a portion of a virtual plane connecting an inner wall of the first aperture end of the first waveguide and an inner wall of the second aperture end of the second waveguide. When a mean frequency of a signal transmitting through the heat insulating transmission line is expressed as ?, a distance between the virtual surface and the reflector is not less than N×?/2?0.05? and not more than N×?/2+0.2? (N is a positive integer).

Abstract: According to one embodiment, there is provided a reporter gene construct. The reporter gene construct comprises a transcriptional regulatory sequence and a reporter gene that is functionally bound to downstream of the transcriptional regulatory sequence. The reporter gene construct is activated dependently of environment and the reporter gene codes for a protein producible of producing a free radical by the activation of the transcriptional regulatory sequence.

Abstract: One embodiment of a high-frequency filter includes a band-rejection filter including a plurality of reflection-type resonance elements and a filter circuit element provided between the reflection-type resonance elements, wherein an electrical length between the reflection-type resonance elements between which the filter circuit element is provided is an odd multiple of 90 degrees in a rejection band of the band-rejection filter.

Abstract: A refrigeration device of an embodiment includes: a heat-insulating vacuum chamber; a refrigerator cryogenic unit that is provided in the heat-insulating vacuum chamber and is cooled to a lower temperature than 195 K; a catalytic electrode that is provided in the heat-insulating vacuum chamber and contains a transition metal at least in part of a surface thereof; a power supply that applies a voltage to the catalytic electrode; and a heating unit that is provided in the heat-insulating vacuum chamber and heats the catalytic electrode. In this refrigeration device, the catalytic electrode is insulated from the heat-insulating vacuum chamber and the heating unit, and the heating unit is insulated from the heat-insulating vacuum chamber and the catalytic electrode.

Abstract: In one embodiment, an active array antenna device includes: M (M?2) bandpass filters to filter signals received by M antenna elements; M low noise amplifiers to amplify the filtered received signals; M distributors to distribute respective of the M amplified signals into N (N?2) distributed signals; M sets of N phase shifters provided for respective of the M distributors to shift phases of the N distributed signals; M sets of N attenuators to attenuate N phase-shift signals; N beam synthesis circuits provided for N sets of the M attenuators to synthesize a beam by summing attenuator outputs from the M attenuators corresponding to the M distributors; a heat insulating container accommodating the low noise amplifiers and the receiving filters and formed of a superconductor material; and a cooler to cool the receiving filters and the low noise amplifiers to make the receiving filters in a superconducting state.

Abstract: A drive control apparatus for an electric car as can correct a synchronizing frequency without employing beacons, is proposed. A wheel-diameter correction information output means includes wheel-diameter information calculation means for calculating wheel-diameter calculation information expressive of a wheel diameter of an electric car, on the basis of two-phase current information. The wheel-diameter correction information output means also includes selection output means. The selection output means selects a wheel-diameter data output WD1, the wheel-diameter calculation information WD2 based on the wheel-diameter calculation means, or wheel-diameter default information WD0, and it outputs wheel-diameter correction information WD. A synchronizing-frequency calculation means outputs synchronizing frequency information FM on the basis of axle rotational-frequency information FR and the wheel-diameter correction information WD.

Abstract: One embodiment of a high-frequency filter includes a band-rejection filter including a plurality of reflection-type resonance elements and a filter circuit element provided between the reflection-type resonance elements, wherein an electrical length between the reflection-type resonance elements between which the filter circuit element is provided is an odd multiple of 90 degrees in a rejection band of the band-rejection filter.