Abstract: An embodiment of the present invention provides a sphygmomanometer that is worn on a measured part of the left wrist of a subject (user) for use. In the sphygmomanometer, on an inner peripheral surface of a band-like body that constitutes a base of a band, a portion for installing a pressure cuff and a protrusion for installing an antenna substrate are separately provided, and the pressure cuff and the antenna substrate are respectively installed on these portions.

Abstract: In an apparatus for measuring biological information using a radio wave, a technique for acquiring an index related to a setting position of the apparatus with respect to a measurement site is provided. A biological information measurement apparatus (1) according to an aspect of the present disclosure includes a transmitter (3) configured to transmit a radio wave toward a measurement.

Abstract: Provided is a technique for detecting a state of an occurrence of a body motion of a measurement target person affecting measurement by using an apparatus configured to measure biological information using a radio wave. A biological information measurement apparatus (1) according to an aspect of the present disclosure includes: a transmitter (3) configured to transmit a radio wave to a measurement site of a living body; a receiver (4) configured to receive a reflected wave of the radio wave by the measurement site and output a waveform signal of the reflected wave; a feature extractor (1051) configured to extract information indicating a feature of a waveform from the waveform signal; and a body motion detector (1052) configured to detect a state of an occurrence of a body motion of the living body affecting measurement of the biological information, based on the extracted information indicating the feature of the waveform.

Abstract: An embodiment of the present invention provides a sphygmomanometer that is worn on a measured part of the left wrist of a subject (user) for use. In the sphygmomanometer, on an inner peripheral surface of a band-like body that constitutes a base of a band, a portion for installing a pressure cuff and a protrusion for installing an antenna substrate are separately provided, and the pressure cuff and the antenna substrate are respectively installed on these portions.

Abstract: A metal member which allows a waveguide to extend inside a dielectric substrate and is adapted to hold a short-circuit metal layer at a potential same as a potential of the waveguide is made to remain along cross-sections of the two wide walls of the waveguide and is removed along cross-sections of two narrow walls of the waveguide so as to prevent an electromagnetic wave from unintendedly being radiated.

Abstract: A metal member which allows a waveguide to extend inside a dielectric substrate and is adapted to hold a short-circuit metal layer at a potential same as a potential of the waveguide is made to remain along cross-sections of the two wide walls of the waveguide and is removed along cross-sections of two narrow walls of the waveguide so as to prevent an electromagnetic wave from unintendedly being radiated.

Abstract: Impedance matching is achieved in a waveguide of a slot antenna, which is provided with an input waveguide that is fed power via an aperture plane; a stairway structure is provided in the input waveguide; the structure creates a step going upward toward a surface provided with a slot; the step difference and height of the step going upward are adjusted so that the impedance at a plane above the step and the impedance at the aperture plane match.