Abstract: A vehicular antenna apparatus includes a substrate, a circuit portion, a case, and a heat transfer path. The substrate has an antenna portion. The circuit portion is mounted on the substrate and configures at least a part of a wireless communication circuit electrically coupled with the antenna portion. The case is made of resin material and configures a protruded portion of an outer surface of a vehicle. The substrate and the circuit portion are arranged in the case. The heat transfer path is arranged between the circuit portion and the case, and has a thermal conductivity higher than air. The circuit portion is electrically coupled with the antenna portion by a solid phase diffusion bonding.

Abstract: A vehicle-mounted antenna device includes a base, a board, a circuit section, and a housing. The base is mountable on a roof of a vehicle. The board has an antenna element section and is stood on a surface of the base. The circuit section serves as at least part of a wireless communication circuit electrically connected to the antenna element section. The housing is made of a resin material and forms a projection of a vehicle outer shape. The board and the circuit section are located in space formed by the base and the housing. The board is stood on the surface of the base so that a first direction perpendicular to the surface of the base differs from a second direction equal to a thickness direction of the board. The circuit section implemented on the board at a position away from the base in the first direction.

Abstract: A wireless communication apparatus includes multiple antennas, a receiver for performing diversity reception using the antennas, a transmitter, a selector circuit connected to the antennas, a divider, and a phase shifter. The divider is located in a transmission line which connects the selector circuit to the transmitter and distributes a signal outputted from the transmitter among the antennas during transmission. The phase shifter is located in at least one of multiple transmission lines, each of which connects the divider to a corresponding one of the antennas.

Abstract: A vehicle-mounted antenna device includes a base, a board, a circuit section, and a housing. The base is mountable on a roof of a vehicle. The board has an antenna element section and is stood on the base. The circuit section is implemented on the board and serves as at least part of a wireless communication circuit electrically connected to the antenna element section. The housing is made of a resin material and forms a projection of an outer shape of the vehicle. The board and the circuit section are located in space formed by the base and the housing. A heat transfer path having a thermal conductivity higher than that of air is formed between the circuit section and the housing without passing the base.

Abstract: An antenna for wireless apparatus which is placed in the vicinity of a conductive object is disclosed. The antenna for wireless apparatus includes a GND plate, a conductive plate parallel to the GND plate, two antenna elements, and two raising conductive plates. Each of the antenna elements includes a short-circuit conductive body and a radiation plate placed at an edge of the short-circuit conductive body. The two antenna elements are placed substantially parallel to a side surface of the conductive object with a distance of a half wavelength of a radio wave to be transmitted and received. The two raising conductive plates are placed close to the two antenna elements respectively and raise the conductive plate from the GND plate to a predetermined height.

Abstract: A radio communications system includes a communication radio and an antenna module positioned external to the communication radio. An antenna cable connects the radio and the antenna module. The radio superposes a power voltage for operating the antenna module on a signal line of the antenna cable and transmits to the antenna module through the antenna cable a control signal that controls a gain of a transmission amplifier and duplexers while the transmission signal is not transmitted therethrough. In such manner, a control of the antenna module is enabled without affecting the transmission signal.

Abstract: A wireless communication apparatus includes a first wireless communication unit performing a first type wireless communication and a second wireless communication unit performing a second type wireless communication, an interference determination portion, and an interference suppression portion. The interference determination portion determines whether the first wireless communication unit is in an interference state based on a radio wave reception state of the first wireless communication unit acquired when the second wireless communication unit is in a transmitting state. In the interference state, radio waves received by the first wireless communication unit are interfered by the radio waves transmitted from the second wireless communication unit.

Abstract: An antenna system includes a case, an antenna configured for a first communication system, an inside orthogonal antenna configured for a polarization diversity communication system, and an outside orthogonal antenna configured for the polarization diversity communication system. The antenna for the first communication system and the inside orthogonal antenna are disposed inside the case such that a main radiation polarization plane of the inside orthogonal antenna is orthogonal to a main radiation polarization plane of the antenna for the first communication system. The outside orthogonal antenna is disposed outside the case such that a main radiation polarization plane of the outside orthogonal antenna is orthogonal to the main radiation polarization plane of the inside orthogonal antenna.

Abstract: A method of manufacturing an electric resistance welding pipe is provided in which a lateral edge shape is made to be an appropriate shape immediately before electric resistance welding is performed, whereby penetrators are securely removed during the electric resistance welding and, consequently, an electric resistance welding pipe having excellent characterization of welded seam can be obtained. A fin shape in finpass forming is printed to lateral edges of a strip, whereby the lateral edges of the strip are shaped with predetermined tapering.

Abstract: An antenna device mounted on a roof surface of a vehicle roof includes a ground plate disposed on the roof surface, an antenna ground, a first antenna element, and a second antenna element. The antenna ground is disposed on a plane perpendicular to the ground plate apart from a ground plate surface by a predetermined distance in a direction perpendicular to the ground plate surface. The first antenna element, whose first base end portion is connected to a first predetermined position of the antenna ground, extends from the first base end portion to a first front end portion in a direction moving away from the antenna ground. The second antenna element, whose second base end portion is connected to a second predetermined position of the antenna ground, extends from the second base end portion to a second front end portion in a direction moving away from the antenna ground.

Abstract: An antenna device includes a first antenna element and a second antenna element. The first antenna element operates at a first predetermined frequency band. The second antenna element operates at a second predetermined frequency band that is different from the first predetermined frequency band. The first antenna element includes a base end portion, a front end portion, a folded portion, a first side portion disposed between the base end portion and the folded portion, and a second side portion disposed between the folded portion and the front end portion. A direction of a current vector in the first side portion is equal to a direction of a current vector in the second side portion. The second antenna element is disposed adjacent to the first antenna element.

Abstract: A vehicle communication apparatus includes an antenna module, a wireless communication device placed and physically separated from the antenna module, a first communication cable and a second communication cable. The antenna module includes a first antenna and a second antenna. The wireless communication device includes a first antenna-connecting sending portion, a second antenna-connecting receiving portion, an adjustment portion, a memory, and a loss amount calculation portion calculating a loss amount by the first communication cable. The adjustment portion adjusts the sending power of the sending wave radiated from the first antenna based on the loss amount calculated by the loss amount calculation portion, and equalizes the sending power with a reference power.

Abstract: An antenna apparatus includes a conductive ground pattern formed on a planar substrate and a linear antenna element electrically connected with the ground pattern. The antenna element includes a base end portion, a front end portion, and a feeding point. The antenna element is parallel to the substrate, and the base end portion is connected with an end portion of the ground pattern so that the antenna element is away from the ground pattern. An auxiliary ground pattern having the same potential with the ground pattern is disposed on the substrate between the ground pattern and the antenna element along a side including the end portion.

Abstract: A method of efficiently manufacturing electric resistance welding pipes having excellent characterization of welded seams is provided, by which each lateral edge of a rounded strip immediately before electric resistance welding is securely shaped with desired tapering flexibly in response to change in strip thickness, so that welding quality may be kept to be excellent. A method of manufacturing electric resistance welding pipes, in which a strip is subjected to forming, then edges thereof are formed to substantially face each other, and then the edges are subjected to electric resistance welding to form a pipe, wherein an edge and an edge opposed thereto at one of an upper-surface side and a lower-surface side of the strip are shaped with tapering before the forming by means of cutting or shaving, or finpass forming.

Abstract: A multi-band antenna includes two conductive wirings and unit circuits cascaded along the conductive wirings. Each unit circuit includes a communication unit, a first capacitor and a second inductor. The communication unit connects between the conductive wirings through a first inductor and a second capacitor connected in series with the first inductor. The first capacitor and the second inductor are inserted in at least one of the conductive wirings. The second inductor is connected in parallel with the first capacitor. Alternatively, the unit circuit includes a communication unit connecting between the conductive wirings through a first inductor, and a first capacitor inserted in at least one of the conductive wirings. The first inductor, the first capacitor, a third capacitor disposed between the conductive wirings, and a third inductor disposed on at least one of the conductive wirings satisfy a relationship expressed by the expression 2.

Abstract: A wireless communication module is arranged such that a radio frequency circuit board stands vertically on a first earth plate. The radio frequency circuit board includes first and second radio frequency transmission and reception circuits at both end portions, respectively. The radio frequency circuit board includes a second earth plate serving as a grounding electric potential of the radio frequency transmission and reception circuits. Feed lines from the radio frequency transmission and reception circuits are connected to the first earth plate, respectively. Ground lines of the feed from the radio frequency transmission and reception circuits, respectively, are connected to the second earth plate. Thus, vertical exciting currents flow at both end portions of the second earth plane, enabling transmission and reception of vertical polarization waves.

Abstract: A vehicular antenna apparatus includes a substrate, a circuit portion, a case, and a heat transfer path. The substrate has an antenna portion. The circuit portion is mounted on the substrate and configures at least a part of a wireless communication circuit electrically coupled with the antenna portion. The case is made of resin material and configures a protruded portion of an outer surface of a vehicle. The substrate and the circuit portion are arranged in the case. The heat transfer path is arranged between the circuit portion and the case, and has a thermal conductivity higher than air. The circuit portion is electrically coupled with the antenna portion by a solid phase diffusion bonding.

Abstract: A power line communication system includes a plurality of communication nodes, a communication line coupling the communication nodes, a direct current power line coupling a connection point of the communication line with one of a positive terminal of a battery and a supply terminal of a load, and a capacitor coupled between the direct current power line and a ground. The communication nodes communicate with each other by superimposing a high frequency signal having a wavelength of ? to the communication line. The capacitor is coupled with the direct current power line at a position where a line length from the connection point is (n×?/2+?/4), where n is a natural number including zero.

Abstract: Provided are, a jig for bite alignment in dentistry enabling to achieve precise bite registration without using the wax rim, and a bite registration method and a manufacture method of dentures using the jig for bite alignment. Using the jig 1A for bite alignment in dentistry provided with the bite material fixing portion 2 in which the bite material 2b is arranged for recording the occlusal position of teeth and with the implant connecting portion 3 for attaching and detaching the implant P arranged in oral cavity, the implant connecting portion 3 is mounted on the implant P buried in the alveolar bones of oral cavity to record the occlusal position of teeth through the bite material 2b arranged in the bite material fixing portion 2.

Abstract: An antenna for wireless apparatus which is placed in the vicinity of a conductive object is disclosed. The antenna for wireless apparatus includes a GND plate, a conductive plate parallel to the GND plate, two antenna elements, and two raising conductive plates. Each of the antenna elements includes a short-circuit conductive body and a radiation plate placed at an edge of the short-circuit conductive body. The two antenna elements are placed substantially parallel to a side surface of the conductive object with a distance of a half wavelength of a radio wave to be transmitted and received. The two raising conductive plates are placed close to the two antenna elements respectively and raise the conductive plate from the GND plate to a predetermined height.