摘要:
Skin material of a clad material is composed of one or more layers, each layer of the skin materials is made of a metal different from the core material in their component compositions, and at least one layer of the skin material has a cast microstructure, when the skin material is superposed on either of one or both faces of the core material.
摘要:
A wireless communication device whose impedance can be matched with an arbitrary load impedance and that can be broadened in operating frequency band even when choosing an input impedance of an IC chip freely is not possible. The wireless communication device includes: a first conductor; a second conductor disposed substantially parallel to the first conductor; a hole formed in the second conductor; a capacitive coupling mechanism disposed adjacent to the hole; and a communication circuit which has at least one of a radio wave transmitting function and a radio wave receiving function. The communication circuit is connected through the capacitive coupling mechanism to two sites on the second conductor that are near borders between the second conductor and the hole.
摘要:
In a foldable portable telephone, a shield box provided within an upper casing is connected via a flexible cable to an output terminal of a transmitting circuit provided within a lower casing, and the shield box is used as an antenna. Thus, compared to the conventional case where a rod antenna is provided at an upper end of the lower casing, variation in gain dependent on a state of the user's hand holding the portable telephone is lessened.
摘要:
An antenna device, a radio communication terminal, an external antenna, and a hand strap can be provided, which are capable of ensuring satisfactory communication performance without being affected by the surrounding environment even in an area where the electric field is weak, and having the antenna performance improved by slightly modifying the body of an existing radio communication device. The antenna device according to the present invention includes an internal antenna (2) electrically connected to and incorporated into a circuit for radio communication within a case (1) and an external antenna (3) externally attached to the case.
摘要:
An antenna device, a radio communication terminal, an external antenna, and a hand strap can be provided, which are capable of ensuring satisfactory communication performance without being affected by the surrounding environment even in an area where the electric field is weak, and having the antenna performance improved by slightly modifying the body of an existing radio communication device. The antenna device according to the present invention includes an internal antenna (2) electrically connected to and incorporated into a circuit for radio communication within a case (1) and an external antenna (3) externally attached to the case.
摘要:
An MOS-type semiconductor device comprises two semiconductors separated by an insulator. The two semiconductors comprise monocrystal semiconductors, each having a crystallographic orientation with respect to the insulator (or other crystallographic/semiconductor property) different to the crystallographic orientation (or other respective property) of the other semiconductor. This arrangement of crystallographic orientations (and other crystallographic/semiconductor properties) can yield reduced unintended electron tunneling or current leakage through the insulator vis a vis a semiconductor device in which such an arrangement is not used. Methods for forming the MOS-type semiconductor devices of the invention are also provided.
摘要:
An RFID tag is characterized in that it includes: a dielectric substrate; a ground conductor portion disposed on one main surface of this dielectric substrate; a patch conductor portion disposed on another main surface of the above-mentioned dielectric substrate and forming a slot; electrical connecting portions internally extending from opposing sides of the above-mentioned slot, respectively; and an IC chip placed in the above-mentioned slot and connected to the above-mentioned electrical connecting portions.
摘要:
The present invention relates to a novel shorted patch antenna device that a thickness of a conductor of an antenna, a location of a feeding point and a shape of an antenna element is easily adjustable and can be miniaturized, as well as a method therefor. The shorted patch antenna device includes: an antenna element that is composed of a folded single conductor plate and has a radiation conductor plane (2) formed on one of opposing planes of the conductor plate and a ground conductor plane (3) formed on the other plane of the opposing planes; a miniaturization section that is composed of a hole (5) formed on the ground conductor plane (3) and a slit (7) cut out from a side of the radiation conductor plane (2) or a matching adjustment plane (31) formed by bending a tip portion of the radiation conductor plane (2) toward the ground conductor plane (3); a coaxial line (8) whose inner conductor (9) extending through the hole (5) to the radiation conductor plane (2) is electrically connected to the radiation conductor plane (2) and whose external conductor (10) is grounded to the ground conductor plane (3); and a resin (16) that fills between the radiation conductor plane (2) and the ground conductor plane (3) of the antenna element.
摘要:
Equipment for manufacturing skin material of a clad material includes a casting apparatus which melts and mixes a metal for the skin material different from the core material in their component compositions, and casts the skin material; an ingot-cutting apparatus which cuts an ingot for skin material which is cast by the casting apparatus; and a conveying apparatus which conveys the ingot for skin material among each apparatus. The ingot-cutting apparatus is a slicing apparatus which slices the ingot for skin material into a predetermined thickness.
摘要:
Provided is a wireless communication device capable of communicating a signal in a first frequency band and a signal in a second frequency band, which is lower in frequency than the first frequency band, including: a plate-like object; a first integrated circuit which has a function of communicating in the first frequency band; a first conductive object which is connected to one of two input/output terminals of the first integrated circuit; a conductive object group constituted of a plurality of second conductive objects at least one of which is connected to another of the two input/output terminals of the first integrated circuit; a second integrated circuit which has a function of communicating in the second frequency band; and a coiled conductive object of which a winding start side is connected to one of two input/output terminals of the second integrated circuit and a winding end side is connected to another of the two input/output terminals of the second integrated circuit. The conductive object group and the coiled conductive object are formed on opposite faces of tile plate-like object from each other. In a perspective view from a normal line direction of the plate-like object, a half or more of the coiled conductive object overlaps with the conductive object group.