Abstract: An antenna device includes a casing including a metal casing portion and a feed coil. The metal casing portion includes a main surface, a side surface connected to the main surfaces, and a notch portion located in the side surface. The feed coil is disposed inside the casing to be coupled with the metal casing portion by a magnetic field, and includes a winding central portion forming a coil opening portion. The feed coil is disposed near the notch portion, with the coil opening portion directed to a region including the notch portion.

Abstract: An antenna device which includes a coil conductor and a booster conductor. The coil conductor is defined by wound loop-shaped conductors and includes a first opening at a winding center and two ends connected to a feeding circuit. The booster conductor includes a coupling conductor portion and a frame-shaped radiation conductor portion. The coupling conductor portion includes a second opening overlapped at least partially by the first opening, is split in a portion thereof by a slit, and is electromagnetically coupled to the coil conductor. The frame-shaped radiation conductor portion includes a third opening and is connected to the coupling conductor portion.

Abstract: An antenna device includes a conductor surface in which an opening having an open edge portion in communication with the outside is provided, a feed element including a first coil connected to the feed element and a second coil magnetically coupled to the first coil, a first mounting portion disposed in the open edge portion and connected to a first end of the second coil, and a second mounting portion disposed in the open edge portion in a state isolated from the first mounting portion and connected to a second end of the second coil. The first mounting portion and the conductor surface are directly or indirectly conducted to each other, and the second mounting portion and the conductor surface are directly or indirectly conducted to each other. A loop is defined around the opening through the first mounting portion, the second mounting portion, and the second coil.

Abstract: Coil conductors each including a coil opening, and a planar conductor are included in an antenna device. The coil conductors are disposed at edge portions of the planar conductor such that winding axes of the coil conductors extend in a normal direction of the planar conductor. The coil conductors are connected such that magnetic fluxes generated at the respective coil conductors are in opposite phase with each other. In a plan view, portions of the plurality of coil conductors overlap the planar conductor and portions of the coil openings do not overlap the planar conductor.

Abstract: Coil conductors each including a coil opening, and a planar conductor are included in an antenna device. The coil conductors are disposed at edge portions of the planar conductor such that winding axes of the coil conductors extend in a normal direction of the planar conductor. The coil conductors are connected such that magnetic fluxes generated at the respective coil conductors are in phase with each other. In a plan view, portions of the plurality of coil conductors overlap the planar conductor and portions of the coil openings do not overlap the planar conductor.

Abstract: A communication terminal device includes a power feeding coil connected to a power feeding circuit, a planar radiation conductor arranged in the vicinity of the power feeding coil and including a cutout portion overlapping with a coil opening of the power feeding coil when viewed in a plan view, and a rear metal body arranged at a side opposite to the planar radiation conductor with respect to the power feeding coil and in the vicinity of the planar radiation conductor, wherein a punched portion which does not overlap with at least a portion of the power feeding coil when viewed in a plan view and has a shape different from a shape of the cutout portion on the planar radiation conductor is provided on the rear metal body.

Abstract: An antenna device includes a casing including a metal casing portion and a feed coil. The metal casing portion includes a main surface, a side surface connected to the main surfaces, and a notch portion located in the side surface. The feed coil is disposed inside the casing to be coupled with the metal casing portion by a magnetic field, and includes a winding central portion forming a coil opening portion. The feed coil is disposed near the notch portion, with the coil opening portion directed to a region including the notch portion.

Abstract: A camera module includes a lens and an image sensor that converts an image formed by the lens into an electrical signal. The camera module is disposed such that the lens is exposed from an opening in a metal housing. A feeding coil to which a feeding circuit is directly or indirectly connected, is disposed, for example, in a space between the image sensor and the lens in a direction of an optical axis of the lens. The feeding coil is coupled to the metal housing by a magnetic field, so that the metal housing defines and functions as a radiating element for communication.

Abstract: An information terminal apparatus includes a flat plate-shaped conductive housing including a first principal surface, a second principal surface, and a side surface that connects the principal surfaces, and a display provided on the first principal surface. The conductive housing includes a slit extending from the first principal surface to the second principal surface. Near the slit, a power feeding coil coupled to an IC element for an HF-band RFID system is disposed. The power feeding coil is magnetically coupled to the conductive housing via the slit. Thus, the conductive housing is utilized as a radiation element of the HF-band RFID system.

Abstract: An antenna device includes a feed coil connected to a feed circuit, and a coil antenna disposed near the feed coil. A ferrite sheet, in which a magnetic loss term in a usable frequency band is relatively large, is provided between the feed coil and the coil antenna. The feed coil and the coil antenna are magnetically coupled to each other via the ferrite sheet. With this configuration, signal transmission efficiency between the feed coil and the coil antenna is enhanced.

Abstract: The system includes imaging unit which images a work space at a viewpoint position in a visual line direction of a worker together with an other component to which one component is to be installed, a position attitude information obtaining unit which obtains position attitude information which indicates relative position attitude relation between viewpoint of the worker and other component in the work space, a virtual image generating unit which generates virtual image of an actual shape of the one component at the viewpoint position in the visual line direction of the worker based on position attitude information, an image composing unit which generates composite image by superimposing virtual image on a real image in the work space imaged by the imaging unit, and display unit which displays composite image. According to the system, efficiency of component assembly work can be considerably improved by using mixed reality technology.

Abstract: An information terminal apparatus includes a flat plate-shaped conductive housing including a first principal surface, a second principal surface, and a side surface that connects the principal surfaces, and a display provided on the first principal surface. The conductive housing includes a slit extending from the first principal surface to the second principal surface. Near the slit, a power feeding coil coupled to an IC element for an HF-band RFID system is disposed. The power feeding coil is magnetically coupled to the conductive housing via the slit. Thus, the conductive housing is utilized as a radiation element of the HF-band RFID system.

Abstract: An RFID antenna is arranged in the vicinity of a metal portion of and on an outer surface side of a casing of a communication terminal device. The RFID antenna includes a magnetic core, and a coil conductor that is wound around the magnetic core. The coil conductor includes a first conductor portion positioned on a first main surface side of the magnetic core and a second conductor portion positioned on the second main surface side of the magnetic core and arranged at a different position than the first conductor portion when viewed in plan from the direction of the first and second main surfaces, and the coil conductor is arranged such that the first main surface side of the magnetic core is on the metal portion side and such that the first conductor portion of the coil conductor faces a leading end portion of the casing.

Abstract: The system has an imaging unit configured to image a work space at a viewpoint position in a visual line direction of a worker together with a workpiece on which a component is mounted, a position attitude information obtaining unit configured to obtain a position attitude information which indicates a relative position attitude relation between the viewpoint of the worker and the workpiece in the work space, a virtual image generating unit configured to generate a three-dimensional virtual image indicating the component after being mounted at the viewpoint position in the visual line direction, an image composing unit configured to generate a composite image by superimposing the virtual image on a real image of the work space, and a display unit configured to display the composite image. According to the system, efficiency of the component mounting work can be considerably improved by using the mixed reality technology.

Abstract: The system includes imaging unit configured to image a work space at a viewpoint position in a visual line direction of a worker together with a workpiece, a position attitude information obtaining unit configured to obtain a position attitude information which indicates a relative position attitude relation between a viewpoint of the worker and the workpiece in the work space, a virtual image generating unit configured to generate a three-dimensional virtual image which indicates a completed shape of the workpiece in the viewpoint position and the visual line direction of the worker based on the position attitude information, an image composing unit configured to generate a composite image by superimposing the virtual image on a real image of the work space, and a display unit configured to display the composite image. According to the system, efficiency of workpiece machining work can be considerably improved by using the mixed reality technology.

Abstract: An antenna device includes a feed coil and a sheet conductor. The feed coil includes a magnetic core and a coil-shaped conductor, which is provided around the magnetic core. An RFIC is connected to the feed coil. The sheet conductor has a larger area than the feed coil. A slit that extends from a portion of the edge of the sheet conductor toward the inner side of the sheet conductor is provided in the sheet conductor. The feed coil is arranged such that the direction of the axis around which the feed coil is disposed is parallel or substantially parallel to the directions in which the sheet conductor extends. The feed coil is arranged such that the feed coil is close to the slit and one of coil openings at the ends of the feed coil faces the slit.

Abstract: An antenna device which includes a coil conductor and a booster conductor. The coil conductor is defined by wound loop-shaped conductors and includes a first opening at a winding center and two ends connected to a feeding circuit. The booster conductor includes a coupling conductor portion and a frame-shaped radiation conductor portion. The coupling conductor portion includes a second opening overlapped at least partially by the first opening, is split in a portion thereof by a slit, and is electromagnetically coupled to the coil conductor. The frame-shaped radiation conductor portion includes a third opening and is connected to the coupling conductor portion.

Abstract: A radio communication device includes a body structural material such as a metal casing, a planar coil antenna which is disposed inside the body structural material so as to face the body structural material and includes a coil pattern and a coil opening, and a first slit pattern which is provided in the body structural material, intersects the coil pattern at at least two locations on the coil pattern in a plan view, and is not connected to an edge portion of the body structural material. Thus, mechanical strength is ensured, and predetermined communication performance is ensured.

Abstract: An RFID antenna is arranged in the vicinity of a metal portion of and on an outer surface side of a casing of a communication terminal device. The RFID antenna includes a magnetic core, and a coil conductor that is wound around the magnetic core. The coil conductor includes a first conductor portion positioned on a first main surface side of the magnetic core and a second conductor portion positioned on the second main surface side of the magnetic core and arranged at a different position than the first conductor portion when viewed in plan from the direction of the first and second main surfaces, and the coil conductor is arranged such that the first main surface side of the magnetic core is on the metal portion side and such that the first conductor portion of the coil conductor faces a leading end portion of the casing.

Abstract: An antenna device which includes a coil conductor and a booster conductor. The coil conductor is defined by wound loop-shaped conductors and includes a first opening at a winding center and two ends connected to a feeding circuit. The booster conductor includes a coupling conductor portion and a frame-shaped radiation conductor portion. The coupling conductor portion includes a second opening overlapped at least partially by the first opening, is split in a portion thereof by a slit, and is electromagnetically coupled to the coil conductor. The frame-shaped radiation conductor portion includes a third opening and is connected to the coupling conductor portion.