Abstract: Assuming transmission signals in different frequency bands are simultaneously transmitted, the isolation lowering is suppressed. A radio frequency module includes a first power amplifier, a second power amplifier, a first switch, a second switch, a third switch, and a mounting substrate. The first switch, the second switch, and the third switch are configured to be capable of simultaneously connecting the first power amplifier and the second power amplifier to an antenna terminal. The first switch is disposed between the second switch and the third switch in plan view of the mounting substrate from a thickness direction. The second switch and the third switch are disposed on the same main surface out of the first main surface and the second main surface of the mounting substrate.

Abstract: A possible benefit of the present disclosure is to further improve a heat dissipation property of an electronic component. A high-frequency module includes a mounting substrate, a filter (for example, a transmission filter), a resin layer, a shielding layer, and a metal member. The resin layer covers at least a portion of an outer peripheral surface (for example, an outer peripheral surface) of the filter. The shielding layer covers at least a portion of the resin layer. The metal member is disposed at a first principal surface of the mounting substrate. The metal member is connected to a surface of the filter on the opposite side from the mounting substrate, the shielding layer, and the first principal surface of the mounting substrate.

Abstract: The total sum of wiring lengths between reception filters and low-noise amplifiers is reduced. A high frequency module includes a mounting board, a plurality of inductors, a plurality of reception filters, and an IC component. The plurality of inductors are mounted on a first main surface of the mounting board. The plurality of reception filters are mounted on the first main surface of the mounting board. The IC component is mounted on a second main surface of the mounting board and includes a low-noise amplifier. A rectangular region in which the plurality of inductors are positioned overlaps with the IC component when viewed in plan from a thickness direction of the mounting board. An electronic component that is closest to each of three or more sides out of four sides of the rectangular region is at least one of the plurality of reception filters.

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

Abstract: A radio-frequency module includes a switch performing switching of the connection between a common terminal and a selection terminal, a reception filter having a reception band in a band A as a passband, a transmission filter that has a transmission band in a band B as a passband and has an output terminal connected to the selection terminal, a filter that has the transmission band in a band B as an attenuation band and has an input terminal connected to the selection terminal, a reception path which connects the selection terminal and an input terminal of the reception filter and on which the filter is disposed, a bypass path which connects the selection terminal and the input terminal of the reception filter and on which no filter is disposed, and a transmission path which connects the selection terminal and a transmission terminal and on which the transmission filter is disposed.

Abstract: A radio-frequency module includes a module substrate. The module substrate includes a first principal surface; a second principal surface on a side of the module substrate that is opposite to the first principal surface; a third principal surface that is recessed toward the first principal surface from the second principal surface in a plan view of the second principal surface; a recessed region in which the third principal surface is a bottom surface; and a protruding region located on an outer periphery of the recessed region, in a plan view of the second principal surface, wherein the protruding region has a via conductor disposed therein, the via conductor extending in a direction perpendicular to the second principal surface and having an end exposed on the second principal surface.

Abstract: A radio-frequency module includes a transmission path which has one end connected to a transmission terminal and on which a transmission signal in Band A is transmitted; a reception path (62) which has one end connected to a reception terminal (120B) and on which a reception signal in Band B is transmitted; a reception path (63) which has one end connected to a reception terminal (120C) and on which a reception signal in Band C is transmitted; a switch (11) having a common terminal (11a) and selection terminals (11b and 11c); and a switch (12) having a common terminal (12a) and selection terminals (12b and 12c).

Abstract: A front-end circuit includes a power amplifier circuit configured to amplify power of multiple transmission waves having different frequency bands, a transmission filter provided between the power amplifier circuit and an antenna and configured to pass a predetermined transmission frequency band of an output signal of the power amplifier circuit, a switch provided between the power amplifier circuit and the antenna, and a matching circuit. In accordance with switching of whether the matching circuit is connected, an insertion loss in a frequency band of an intermodulation distortion within a communication band in an intra-band carrier aggregation mode is increased as compared to an insertion loss in a frequency band of an intermodulation distortion within the communication band in a single mode.

Abstract: A radio-frequency module includes a module substrate. The module substrate includes a first principal surface; a second principal surface on a side of the module substrate that is opposite to the first principal surface; a third principal surface that is recessed toward the first principal surface from the second principal surface in a plan view of the second principal surface; a recessed region in which the third principal surface is a bottom surface; and a protruding region located on an outer periphery of the recessed region, in a plan view of the second principal surface, wherein the protruding region has a via conductor disposed therein, the via conductor extending in a direction perpendicular to the second principal surface and having an end exposed on the second principal surface.

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

Abstract: A radio-frequency module includes a transmission path which has one end connected to a transmission terminal and on which a transmission signal in Band A is transmitted; a reception path (62) which has one end connected to a reception terminal (120B) and on which a reception signal in Band B is transmitted; a reception path (63) which has one end connected to a reception terminal (120C) and on which a reception signal in Band C is transmitted; a switch (11) having a common terminal (11a) and selection terminals (11b and 11c); and a switch (12) having a common terminal (12a) and selection terminals (12b and 12c).

Abstract: A radio-frequency module includes a switch performing switching of the connection between a common terminal and a selection terminal, a reception filter having a reception band in a band A as a passband, a transmission filter that has a transmission band in a band B as a passband and has an output terminal connected to the selection terminal, a filter that has the transmission band in a band B as an attenuation band and has an input terminal connected to the selection terminal, a reception path which connects the selection terminal and an input terminal of the reception filter and on which the filter is disposed, a bypass path which connects the selection terminal and the input terminal of the reception filter and on which no filter is disposed, and a transmission path which connects the selection terminal and a transmission terminal and on which the transmission filter is disposed.

Abstract: A sensor unit including an object detection sensor and an inclination sensor is mounted to a vehicle, and axial misalignment of the object detection sensor is determined as follows. A first inclination angle acquiring step of disposing the sensor unit, so that a first predetermined direction is aligned with a second predetermined direction before the sensor unit is mounted to the vehicle, and acquiring a first inclination angle detected by the inclination sensor from the inclination sensor, is performed. Then, a second inclination angle acquiring step of mounting the sensor unit on the vehicle and acquiring a second inclination angle detected by the inclination sensor from the inclination sensor, is performed. Finally, an axial misalignment determining step of determining whether axial misalignment has occurred at the object detection sensor, based on the first inclination angle and the second inclination angle, is performed.

Abstract: A front-end circuit includes a power amplifier circuit configured to amplify power of multiple transmission waves having different frequency bands, a transmission filter provided between the power amplifier circuit and an antenna and configured to pass a predetermined transmission frequency band of an output signal of the power amplifier circuit, a switch provided between the power amplifier circuit and the antenna, and a matching circuit. In accordance with switching of whether the matching circuit is connected, an insertion loss in a frequency band of an intermodulation distortion within a communication band in an intra-band carrier aggregation mode is increased as compared to an insertion loss in a frequency band of an intermodulation distortion within the communication band in a single mode.

Abstract: A radio frequency front end circuit includes a diplexer, two reception filters having, as pass bands, a band of a low frequency side band group and a band of a high frequency side band group, and a transmission/reception filter in which a pass band overlaps a boundary band of the low frequency side band group and the high frequency side band group, in which the diplexer includes a low frequency side filter connected to a common terminal and a first input/output terminal and a high frequency side filter connected to the common terminal and a second input/output terminal, the common terminal is connected to a common input/output terminal, the one reception filter is connected to the first input/output terminal, the other reception filter is connected to the second input/output terminal, and the transmission/reception filter is connected to the common input/output terminal without passing through the diplexer.

Abstract: A sensor unit including an object detection sensor and an inclination sensor is mounted to a vehicle, and axial misalignment of the object detection sensor is determined as follows. A first inclination angle acquiring step of disposing the sensor unit, so that a first predetermined direction is aligned with a second predetermined direction before the sensor unit is mounted to the vehicle, and acquiring a first inclination angle detected by the inclination sensor from the inclination sensor, is performed. Then, a second inclination angle acquiring step of mounting the sensor unit on the vehicle and acquiring a second inclination angle detected by the inclination sensor from the inclination sensor, is performed. Finally, an axial misalignment determining step of determining whether axial misalignment has occurred at the object detection sensor, based on the first inclination angle and the second inclination angle, is performed.

Abstract: An obstacle detection apparatus for a vehicle is provided. The apparatus includes an ultrasonic sensor and a controller. The ultrasonic sensor detects a presence of an obstacle around the vehicle and a distance to the obstacle by transmitting an ultrasonic wave and receiving the ultrasonic wave reflected by the obstacle. The controller controls the ultrasonic sensor. The ultrasonic sensor includes an ultrasonic wave element. The ultrasonic wave element has multiple resonance modes. The ultrasonic sensor changes a directivity of the ultrasonic sensor by selecting one of the multiple resonance modes of the ultrasonic wave element in accordance with a command signal output from the controller.

Abstract: An ultrasonic sensor includes an inner case mainly made of plastic and having a shape of a cylinder with a bottom portion. A conductive film is attached to the bottom portion. An electrode formed at a surface of the piezoelectric vibrator is attached to the conductive film to be electrically connected with the conductive film. Therefore, by connecting leads with the conductive film and another electrode at the other side of the piezoelectric vibrator, the electric conduction between an external circuit and both electrodes at both surfaces of the piezoelectric vibrator is ensured.

Abstract: An ultrasonic sensor has a sensor body and a bezel having a metal spring attached on a side wall thereof for installation on a vehicle component. A free end of the metal spring is positioned to protrude from a through hole of the side wall, is pressed by a portion of the sensor body that is inserted in a hollow space of the bezel, and is pushed back by an opening face of the sensor body. In this manner, the bezel is firmly attached on the component and the sensor body is firmly attached on the bezel.