Abstract: A high-frequency module with a simple configuration and facilitates size reduction and mass production is provided. An oscillator that includes a bipolar transistor, an antenna, and mixers are realized as one circuit. A base of the bipolar transistor is electrically connected to a resonance pattern or the like that outputs a signal at a frequency in a quasi-millimeter wave band or higher by direct oscillation. A collector is electrically connected to a transmission line or the like which is connected to a power source. An emitter is electrically connected to a planar open transmission line or the like that operates as an antenna. A portion of the signal transmitted through the open transmission line is fed back to the base via a capacitance between the open transmission line and the base. The open transmission line is electrically connected to two diodes and each of which operates as a mixer.

Abstract: An RF detector includes: a detection element configured to detect a signal strength of an RF signal; and a printed circuit board on which a first conductive pattern in electrical continuity with an input end of the detection element and a second conductive pattern in electrical continuity with an output end of the detection element are formed, wherein the first conductive pattern and the second conductive pattern face each other across the detection element to achieve capacitive coupling between the conductive patterns.

Abstract: A planar antenna formed on a front surface of a substrate whose back surface serves as a ground surface, the planar antenna includes: a radiating element; a feeding line connected with the radiating element; a first ground element and a second ground element which are respectively electrically connected to the ground surface and are arranged to be opposed to each other across the feeding line; a first parasitic element extending from the first ground element to surround at least a part of the radiating element; and a second parasitic element extending from the second ground element to surround at least a part of the radiating element from an opposite direction from the first parasitic element, wherein the first ground element and the second ground element serve as impedance matching devices for the feeding line.

Abstract: A high-frequency module with a simple configuration and facilitates size reduction and mass production is provided. An oscillator that includes a bipolar transistor, an antenna, and mixers are realized as one circuit. A base of the bipolar transistor is electrically connected to a resonance pattern or the like that outputs a signal at a frequency in a quasi-millimeter wave band or higher by direct oscillation. A collector is electrically connected to a transmission line or the like which is connected to a power source. An emitter is electrically connected to a planar open transmission line or the like that operates as an antenna. A portion of the signal transmitted through the open transmission line is fed back to the base via a capacitance between the open transmission line and the base. The open transmission line is electrically connected to two diodes and each of which operates as a mixer.

Abstract: Provided is a pulse radar device which can attenuate an interference signal and significantly amplify a reflected wave without saturating the interference signal. A baseband amplifier unit (5) is installed in a pulse radar device (1) which is configured to transmit from antenna (3) a transmission pulse wave obtained by modulating a transmission control signal, and to be afterwards switched to a standby mode for a reflected wave obtained by reflecting the transmission pulse wave by an object to be detected.

Abstract: Provided is a pulse radar device which can attenuate an interference signal and significantly amplify a reflected wave without saturating the interference signal. A baseband amplifier unit (5) is installed in a pulse radar device (1) which is configured to transmit from antenna (3) a transmission pulse wave obtained by modulating a transmission control signal, and to be afterwards switched to a standby mode for a reflected wave obtained by reflecting the transmission pulse wave by an object to be detected.

Abstract: A variable tuning antenna includes a tuning circuit (1) and a radiation element (2), connected to each other in series. The tuning circuit (1) includes a first inductance element (11) and a parallel circuit (12) to each other in series, and the parallel circuit (12) includes a second inductance element (121) and a variable capacitance element (122) to each other in parallel. And the tuning circuit is set so that the combined reactance of the radiation element and the first inductance element and the combined reactance of the parallel circuit can be canceled by each other, and the parallel circuit does not resonate in a desired receiving frequency band, and moreover, the tuning circuit is formed so as to be tunable in the desired frequency band by varying the capacitance of the variable capacitance.

Abstract: A hanger system provided with a hanger drive device for driving a hanger for conveying a conveyance object. The hanger drive device includes a drive wheel facing a bar provided to the hanger, a pinch roll, and a cylinder for pushing the pinch roll toward the drive wheel. The hanger moves when the bar is pushed towards the drive wheel by the pinch roll. When the pinch roll returns to a stand-by position, the bar is separated from the drive wheel, and the movement stops.

Abstract: A hanger system provided with a hanger drive device for driving a hanger for conveying a conveyance object. The hanger drive device includes a drive wheel facing a bar provided to the hanger, a pinch roll, and a cylinder for pushing the pinch roll toward the drive wheel. The hanger moves when the bar is pushed towards the drive wheel by the pinch roll. When the pinch roll returns to a stand-by position, the bar is separated from the drive wheel, and the movement stops.

Abstract: There is provided a small multi-band antenna that is capable of supporting multiple bands. A first sub-element (11) is disposed at a region where strength of electric field becomes relatively large while power is being fed on a main element (10) capable of irradiating a high-frequency signal of a plurality of frequency bands, and a second sub-element (12) is disposed at a region in which strength of electric field becomes relatively small while power is being fed on the main element (10). Then, the first and second sub-elements (11) and (12) are operated as passive reflective elements by putting one end portions of the first and second sub-elements (11) and (12) into an electrically open state by inputting a control signal of a first level to a switching mechanism (14), and are operated as electrically short-circuit elements that couple in high frequency with the main element (10) by grounding one end portions directly or via a predetermined resonance circuit by inputting the control signal of a second level.

Abstract: A variable tuning antenna includes a tuning circuit (1) and a radiation element (2), connected to each other in series. The tuning circuit (1) includes a first inductance element (11) and a parallel circuit (12) to each other in series, and the parallel circuit (12) includes a second inductance element (121) and a variable capacitance element (122) to each other in parallel. And the tuning circuit is set so that the combined reactance of the radiation element and the first inductance element and the combined reactance of the parallel circuit can be canceled by each other, and the parallel circuit does not resonate in a desired receiving frequency band, and moreover, the tuning circuit is formed so as to be tunable in the desired frequency band by varying the capacitance of the variable capacitance.