A structure for wireless communication having a plurality of conductor layers, an insulator layer separating each of the conductor layers, and at least one connector connecting two of the conductor layers wherein an electrical resistance is reduced when an electrical signal is induced in the resonator at a predetermined frequency. The structure is capable of transmitting or receiving electrical energy and/or data at various near and far field magnetic coupling frequencies.

A structure for wireless communication having a plurality of conductor layers, an insulator layer separating each of the conductor layers, and at least one connector connecting two of the conductor layers wherein an electrical resistance is reduced when an electrical signal is induced in the resonator at a predetermined frequency. The structure is capable of transmitting or receiving electrical energy and/or data at various near and far field magnetic coupling frequencies.

An RFID tag is provided that has reduced size while a decrease in communication distance is prevented. The RFID tag includes an inductor element having a coiled antenna built in a substrate and an RFIC element mounted on a mounting surface of the substrate and electrically connected to the coiled antenna. The coiled antenna is disposed such that a winding axis becomes parallel to or inclined with respect to the mounting surface of the substrate. The area of the RFIC element viewed in a direction orthogonal to the mounting surface of the substrate is larger than opening area of the coiled antenna viewed in winding axis direction of the coiled antenna. The RFIC element is disposed without overlapping at least a portion of opening region of the coiled antenna when viewed in winding axis direction of the coiled antenna.

An RFID tag is provided that has reduced size while a decrease in communication distance is prevented. The RFID tag includes an inductor element having a coiled antenna built in a substrate and an RFIC element mounted on a mounting surface of the substrate and electrically connected to the coiled antenna. The coiled antenna is disposed such that a winding axis becomes parallel to or inclined with respect to the mounting surface of the substrate. The area of the RFIC element viewed in a direction orthogonal to the mounting surface of the substrate is larger than opening area of the coiled antenna viewed in winding axis direction of the coiled antenna. The RFIC element is disposed without overlapping at least a portion of opening region of the coiled antenna when viewed in winding axis direction of the coiled antenna.

An example method performed by a wireless-power-transmitting device that includes an antenna array is provided. The method includes radiating electromagnetic waves that form a maximum power level at a first distance away from the antenna array. Moreover, a power level of the radiated electromagnetic waves decreases, relative to the maximum power level, by at least a predefined amount at a predefined radial distance away from the maximum power level. In some embodiments, the method also includes detecting a location of a wireless-power-receiving device, whereby the location of the wireless-power-receiving device is further from the antenna array than a location of the maximum power level.

An antenna structure with multiple frequency and MIMO capabilities applied to an electronic device includes back board, side frame, first feed point, second feed point, and first ground point. The side frame defines at least a first gap and a second gap. The first and second gaps create first and second radiation portions from the side frame. The first feed point from a source feeds current and signal to the first radiation portion. The second feed point from a source feeds current and signal to the second radiation portion. The first ground point is positioned between the first and second feed points. When the first feed point and the second feed point supply current, the first radiation portion and the second radiation generate at least one common radiation frequency band together with others.

A vehicular half loop antenna is provided that includes a ground section and a feed section. The ground section has a ground point that is configured to be electrically grounded. The feed section is configured to be electrically connected to the ground section. The feed section includes a first feed portion having a feed point that is configured to be electrically connected to an antenna feed, and a second feed portion connected to the first feed portion via a corner portion therebetween, with the corner portion being located farther from the ground point than the feed point and having a curved or tapered outer edge.

A vehicular half loop antenna is provided that includes a ground section and a feed section. The ground section has a ground point that is configured to be electrically grounded. The feed section is configured to be electrically connected to the ground section. The feed section includes a first feed portion having a feed point that is configured to be electrically connected to an antenna feed, and a second feed portion connected to the first feed portion via a corner portion therebetween, with the corner portion being located farther from the ground point than the feed point and having a curved or tapered outer edge.

Various embodiments of the present disclosure relate to an electronic device for extending an operation range of an antenna. The electronic device may comprise: a foldable housing including a first housing, a second housing, and a hinge module including a hinge disposed between the first housing and the second housing; a first coil positioned inside the second housing and including n designated turns; a second coil positioned inside the first housing and including m designated turns less than the n, the second coil being connected in series with the first coil; a communication module comprising communication circuitry electrically connected to the first coil and the second coil; and a processor for controlling the communication module.

Various embodiments of the present disclosure relate to an electronic device for extending an operation range of an antenna. The electronic device may comprise: a foldable housing including a first housing, a second housing, and a hinge module including a hinge disposed between the first housing and the second housing; a first coil positioned inside the second housing and including n designated turns; a second coil positioned inside the first housing and including m designated turns less than the n, the second coil being connected in series with the first coil; a communication module comprising communication circuitry electrically connected to the first coil and the second coil; and a processor for controlling the communication module.