Abstract: A microwave device includes a board having a first face and a second face, a transmitting antenna portion provided on the first face, a receiving antenna portion provided on the first face, and a high-frequency circuit portion that is provided on the first face and is connected to the transmitting antenna portion and the receiving antenna portion. The microwave device further includes, on the second face of the board, a ground face that is provided shared by the transmitting antenna portion, receiving antenna portion, and high-frequency circuit portion, and a via hole connecting another ground face of the high-frequency circuit portion and the ground face. A ground face shared by the transmitting antenna portion, receiving antenna portion, and high-frequency circuit portion is configured by the ground faces and the via hole.

Abstract: An arithmetic processor of a microwave device detects a motion of a target as an amplitude value at given time intervals in accordance with the difference between the frequency of radiation waves and the frequency of reflected waves. The radiation waves are emitted to the target. The reflected waves are reflected from the target. The arithmetic processor determines whether the target is approaching or receding and determines, as a position through which the target has passed, a first-amplitude-value position on the basis of the magnitude relationship between a first amplitude value and a second amplitude value. The first-amplitude-value position is a position at which the first amplitude value is present, and is determined in terms of ranges defined by using the minimum, the maximum, and adjacent two values of the thresholds.

Abstract: A high-frequency device that detects biological information related to heartbeat, respiration, and the like with high accuracy. A high-frequency device (1) includes a biological signal extracting unit (heartbeat signal extracting unit 53, respiration signal extracting unit 63) that extracts a biological signal representing a specific frequency component; and an autocorrelation function processing unit (heartbeat autocorrelation function processing unit 54, respiratory autocorrelation function processing unit 64) that determines periodicity of an autocorrelation function to calculate biological information.

Abstract: A high-frequency apparatus includes a circuit substrate, a planar antenna unit, a high-frequency circuit unit, and a dielectric block that is provided with an accommodation chamber for accommodating the circuit substrate. The circuit substrate includes a first main surface and a second main surface. The planar antenna unit is provided on the first main surface. The high-frequency circuit unit is provided on the first main surface and is connected to the planar antenna unit. The accommodation chamber includes a first inner surface portion that is in contact with the second main surface and to which the circuit substrate is fixed and a second inner surface portion that opposes the planar antenna unit with a space therebetween.

Abstract: A microwave device includes a board having a first face and a second face, a transmitting antenna portion provided on the first face, a receiving antenna portion provided on the first face, and a high-frequency circuit portion that is provided on the first face and is connected to the transmitting antenna portion and the receiving antenna portion. The microwave device further includes, on the second face of the board, a ground face that is provided shared by the transmitting antenna portion, receiving antenna portion, and high-frequency circuit portion, and a via hole connecting another ground face of the high-frequency circuit portion and the ground face. A ground face shared by the transmitting antenna portion, receiving antenna portion, and high-frequency circuit portion is configured by the ground faces and the via hole.

Abstract: An area and a size of a high frequency device are reduced. The high frequency device includes a first board (1) that has a first surface (1a) on which a circuit unit is formed and a second surface (1b) on which a ground conductor is formed, a second board (2) that has a third surface (2a) on which an antenna is formed and a fourth surface (2b) on which a second ground conductor is formed, and a conductor plate (3), in which the conductor plate (3) is sandwiched between the second surface (1b) and the fourth surface (2b).

Abstract: Detection of body motion of a subject in a bathroom is accurately performed. A body motion signal processing apparatus (100) includes: a transmission unit that transmits a radio wave to a target; a receiving unit that receives the radio wave reflected by the target; and a detection unit that detects, from a received signal received by the receiving unit, a body motion component signal corresponding to a body motion component that is motion of a body. The target includes a bathroom, and the body motion signal processing apparatus (100) further includes a signal processing unit (40) that, in a case where a subject is in the bathroom, compares amplitude of the body motion component signal detected by the detection unit to amplitude of the body motion component signal that is detected in advance in the bathroom where no subject exists, and outputs a notice based on a comparison result.

Abstract: A vital sign signal processing device having an excellent detection accuracy of a vital sign signal is provided. A vital sign signal processing device includes: a plurality of vital sign signal detection units configured to detect vital sign signals of a subject; and a signal processing unit configured to process the vital sign signals detected by the plurality of vital sign signal detection units and to acquire vital sign information denoting a vital phenomenon which is movement of a living body. Each of the plurality of vital sign signal detection units includes a transmission unit configured to transmit a radio wave with which the living body is irradiated and a reception unit configured to receive a signal corresponding to a radio wave reflected off the living body, and each of the plurality of vital sign signal detection units is configured to detect the vital sign signal from the signal received by the reception unit.

Abstract: An area and a size of a high frequency device are reduced. The high frequency device includes a first board (1) that has a first surface (1a) on which a circuit unit is formed and a second surface (1b) on which a ground conductor is formed, a second board (2) that has a third surface (2a) on which an antenna is formed and a fourth surface (2b) on which a second ground conductor is formed, and a conductor plate (3), in which the conductor plate (3) is sandwiched between the second surface (1b) and the fourth surface (2b).

Abstract: A high-frequency device that detects biological information related to heartbeat, respiration, and the like with high accuracy. A high-frequency device (1) includes a biological signal extracting unit (heartbeat signal extracting unit 53, respiration signal extracting unit 63) that extracts a biological signal representing a specific frequency component; and an autocorrelation function processing unit (heartbeat autocorrelation function processing unit 54, respiratory autocorrelation function processing unit 64) that determines periodicity of an autocorrelation function to calculate biological information.

Abstract: A feed horn includes a plurality of primary radiating elements. The plurality of primary radiating elements each include a waveguide having an opening. At least two primary radiating elements of the plurality of primary radiating elements each further include a radiating element of a dielectric material provided over the opening of the waveguide.

Abstract: An antenna unit includes a substrate (120), an antenna (110) located on one major surface of the substrate (120), a dielectric plate (130) opposed to the major surface of the substrate (120), and a dielectric layer (190) interposed between the substrate (120) and the dielectric plate (130). The dielectric plate (130) has a dielectric constant of not more than the dielectric constant of the substrate (120). The dielectric layer (190) has a dielectric constant smaller than the dielectric constant of the dielectric plate (130).

Abstract: A millimeter wave reception device includes a base member, an antenna portion placed on an upper surface of the base member, and a cover arranged above the antenna portion to cover the antenna portion. The antenna portion is arranged within a space formed by the upper surface of the base member and an inner surface of the cover. The cover is formed in a tapered shape, and includes not less than one inclined surface having a constant gradient such that the space becomes narrower at a position closer to an upper portion. An angle formed between the inclined surface of the cover and the upper surface of the base member is not less than 60° and not more than 90°.

Abstract: A millimeter wave transceiving system 100 for transmitting and receiving a millimeter wave includes a transmitting apparatus 1 for transmitting a millimeter wave, a reflecting plate 41 for reflecting a millimeter wave transmitted from the transmitting apparatus 1, and a receiving apparatus 2 for receiving a millimeter wave reflected by the reflecting plate 41. The reflecting plate 41 includes a metal plate, a metal sheet, or a metal film, as a reflecting surface 43 for reflecting a millimeter wave. This makes it possible to realize a millimeter wave transceiving system which allows an easy installation.

Abstract: An antenna unit includes a substrate (120), an antenna (110) located on one major surface of the substrate (120), a dielectric plate (130) opposed to the major surface of the substrate (120), and a dielectric layer (190) interposed between the substrate (120) and the dielectric plate (130). The dielectric plate (130) has a dielectric constant of not more than the dielectric constant of the substrate (120). The dielectric layer (190) has a dielectric constant smaller than the dielectric constant of the dielectric plate (130).

Abstract: An earphone antenna device operable to be connected with a wireless communication terminal device includes: earphone cables, connected with earphone sections, respectively, for supplying audio signals; an audio cable one end of which is connected with the wireless communication terminal device and the other end is connected with the earphone cables; and a coaxial cable one end of which is connected with the wireless communication terminal device and the other end is connected with a pair of string-shaped antenna elements integrated with the earphone cables. The earphone cables are insulated from the antenna elements and the audio cable is insulated from the coaxial cable. This provides a dipole antenna device and an earphone antenna device hardly influenced by noises from the wireless communication terminal device and noises transmitted via the audio cable. Further, a wireless communication terminal device to be connected with the antenna devices is provided.

Abstract: A radio receiver includes a down-converter 110 for receiving a radio multiplexed signal containing a first signal and a second signal, multiplying the first signal and the second signal by a mixer 104 to thereby down-convert the radio multiplexed signal and generate an intermediate frequency signal 5e. The mixer 104 has a control section for controlling an operating bias of the mixer 104 in response to a signal strength of at least either one of the first signal or the second signal. Thus, the dynamic range of the mixer can be widened so that stable image characteristics can be obtained over a wide range of transmission distance.

Abstract: A millimeter wave reception device includes a base member, an antenna portion placed on an upper surface of the base member, and a cover arranged above the antenna portion to cover the antenna portion. The antenna portion is arranged within a space formed by the upper surface of the base member and an inner surface of the cover. The cover is formed in a tapered shape, and includes not less than one inclined surface having a constant gradient such that the space becomes narrower at a position closer to an upper portion. An angle formed between the inclined surface of the cover and the upper surface of the base member is not less than 60° and not more than 90°.

Abstract: A radio receiver includes a down-converter 110 for receiving a radio multiplexed signal containing a first signal and a second signal, multiplying the first signal and the second signal by a mixer 104 to thereby down-convert the radio multiplexed signal and generate an intermediate frequency signal 5e. The mixer 104 has a control section for controlling an operating bias of the mixer 104 in response to a signal strength of at least either one of the first signal or the second signal. Thus, the dynamic range of the mixer can be widened so that stable image characteristics can be obtained over a wide range of transmission distance.

Abstract: A millimeter wave transceiving system 100 for transmitting and receiving a millimeter wave includes a transmitting apparatus 1 for transmitting a millimeter wave, a reflecting plate 41 for reflecting a millimeter wave transmitted from the transmitting apparatus 1, and a receiving apparatus 2 for receiving a millimeter wave reflected by the reflecting plate 41. The reflecting plate 41 includes a metal plate, a metal sheet, or a metal film, as a reflecting surface 43 for reflecting a millimeter wave. This makes it possible to realize a millimeter wave transceiving system which allows an easy installation.