Abstract: According to one embodiment, an antenna device mounted on a vehicle configured to communicate between the vehicle and another vehicle, between a road and the vehicle, or between a pedestrian and the vehicle using a communication unit including at least one antenna includes a memory and a processor coupled to the memory. The processor is configured to: detect at least one of a traveling place, a traveling state, and a communication history of the vehicle; and set a transmission range of a radio wave transmitted from the antenna based on a detection result.

Abstract: A simulation system includes a driving simulator, a radio propagation simulator, and an application simulator. The driving simulator generates a driving scenario representing at least behavior of a vehicle. The radio propagation simulator calculates a propagation parameter representing a radio wave to be received by one or more antennas installed in the vehicle. The propagation parameter is calculated on the basis of antenna performance of the one or more antennas and a position of the vehicle. The position of the vehicle is indicated by the driving scenario generated by the driving simulator. The application simulator simulates operation of an application serving to control operation of the vehicle. The operation of the application is simulated by using at least information based on the propagation parameter.

Abstract: An antenna device is mounted on a vehicle and performs vehicle-to-vehicle and road-to-vehicle communications using a plurality of communicators including antennas. The antenna device includes one or more hardware processors coupled to one or more memories, and configured to function as, communication control units, a vehicle state detection unit, and operation control units. Communication control units are each provided in one of the plurality of communicators and control transmission/reception operations of the antennas connected to the communicators. A vehicle state detection unit detects a state of the vehicle and operation states of the communication control units. Operation control units are each provided in one of the plurality of communicators and control the operation states of the communication control units according to the state of the vehicle detected by the vehicle state detection unit and the operation states of the communication control units, for each of the plurality of communicators.

Abstract: A measurement device includes a memory; and a hardware processor coupled to the memory. The hardware processor is configured to: detect a vibration width of an antenna that receives a measurement target radio wave from a target on which a communication system that transmits the measurement target radio wave is mounted, based on a first reception radio wave received by the antenna; and derive communication performance of the communication system, based on a second reception radio wave that is the measurement target radio wave received by the antenna when the vibration width is greater than 0 and equal to or smaller than a set width greater than 0.

Abstract: A measurement device according to the present disclosure includes a memory and a processor coupled to the memory. The processor is configured to: transmit a distance-detecting radiowave from an antenna; detect a distance between the antenna and a vehicle based on a first reception radiowave received by the antenna, the first reception radiowave being a reception radiowave obtained by the antenna receiving a reflected wave of a distance-detecting radiowave reflected by the vehicle on which a communication system configured to transmit a measurement target radiowave is mounted; perform drive control on at least one of the antenna and the vehicle so that the detected distance reaches a set distance larger than 0; and derive, when the detected distance reaches the set distance, communication performance of the communication system based on a second reception radiowave that is the measurement target radiowave received by the antenna.

Abstract: A portable radio device of a type having two-direction openable and closable enclosures that can effectively lessen influence on an antenna exerted by a hinge section is provided. A horizontal hinge section 5 for rotatably joining an upper enclosure 1 to a hinge enclosure 3 around a first shaft center includes a horizontal hinge anchor 52 electrically connected to a first metal part 13 disposed in the upper enclosure 1, a horizontal hinge plate 53 that is placed in the hinge enclosure 3 and that contains a conductive material, and a first hinge shaft 51 that electrically connects the horizontal hinge anchor 52 to the horizontal hinge plate 53 and that contains a conductive material interposed between an area from a substantial center to an end of a long side of a face along which the upper enclosure 1 and the hinge enclosure 3 face a direction of second shaft center (X).

Abstract: A mobile radio apparatus wherein the degradation of communication performance caused by electromagnetic noise can be precluded with enhanced reliability. This mobile telephone unit (100) comprises a camera body (107); a circuit board (106) that includes partial board parts (104, 105) located on the two respective sides of the camera body (107); a camera shield (108) that is located close to and opposed to the back surface of the camera body (107) (which is opposite to the image pickup plane); a camera connection connector (110) that is connected to the camera body (107) and grounded in the partial board part (104); a frequency limiting part (111) that is connected to the camera shield (108) and grounded in the partial board part (105); a feeding part (117) that is located in the partial board part (105); and a matching circuit part (113) that is located and grounded in the partial board part (105).

Abstract: A portable radio apparatus includes: a first circuit board disposed within a first housing; a second circuit board disposed within a second housing; a third housing disposed between the first housing and the second housing; a first hinge part rotatably coupling the first and third housings; an electrically conductive and hollow second hinge part rotatably coupling the second housing and the third housing; a connection cable inserted in the second hinge part and electrically connecting the first circuit board and the second circuit board; and an antenna element disposed within the third housing. The antenna element and the second hinge part are connected such that the second hinge part functions as a ground of the antenna element. The portable radio apparatus further includes an electrically conductive connection member electrically connecting the ground of the antenna element and a ground of the second circuit board.

Abstract: A mobile radio apparatus wherein the degradation of communication performance caused by electromagnetic noise can be precluded with enhanced reliability. This mobile telephone unit (100) comprises a camera body (107); a circuit board (106) that includes partial board parts (104, 105) located on the two respective sides of the camera body (107); a camera shield (108) that is located close to and opposed to the back surface of the camera body (107) (which is opposite to the image pickup plane); a camera connection connector (110) that is connected to the camera body (107) and grounded in the partial board part (104); a frequency limiting part (111) that is connected to the camera shield (108) and grounded in the partial board part (105); a feeding part (117) that is located in the partial board part (105); and a matching circuit part (113) that is located and grounded in the partial board part (105).

Abstract: A portable radio device of a type having two-direction openable and closable enclosures that can effectively lessen influence on an antenna exerted by a hinge section is provided. A horizontal hinge section 5 for rotatably joining an upper enclosure 1 to a hinge enclosure 3 around a first shaft center includes a horizontal hinge anchor 52 electrically connected to a first metal part 13 disposed in the upper enclosure 1, a horizontal hinge plate 53 that is placed in the hinge enclosure 3 and that contains a conductive material, and a first hinge shaft 51 that electrically connects the horizontal hinge anchor 52 to the horizontal hinge plate 53 and that contains a conductive material interposed between an area from a substantial center to an end of a long side of a face along which the upper enclosure 1 and the hinge enclosure 3 face a direction of second shaft center (X).