摘要:
An antenna coil includes an air-core coil wound helically in a plane and a plate magnetic core member inserted in the air-core coil to be approximately parallel with a plane of the air-core coil. The magnetic core member is formed by a soft magnetic metal, an amorphous or ferrite, or a composite member of a powder, flake and plastic, or rubber. The magnetic core member is formed by performing an injection molding operation or a compressing molding operation of the composite member. Alternatively, the magnetic core member is a magnetic coating formed by applying and drying the composite member. A non-magnetic conductive plate that has a conductivity is layered on a surface of the air-core coil through which the magnetic core member is inserted. The conductive plate is made of a copper, a copper alloy, an aluminum or an aluminum alloy having 0.01 to 2 mm thickness. The antenna coil is operated by relatively high frequency while it is rigid relatively.
摘要:
The wrist watch with internal tag according to the present invention includes a watch case 12 which includes a ring shaped case 12a and a rear lid 12c, a drive section 13 which is housed in the watch case, a display section 14 which is housed in the watch case 12, is driven by the drive section 13, and displays a time instant, and an RFID tag (18) which is housed in the watch case 12 and includes an antenna 16 and an IC chip 17. The antenna includes a rod shaped magnetic core member 16a which is provided to follow around the inner surface of the rear lid 12c between the ring shaped case 12a and the drive section 13, and a coil 16b which is wound in a helical shape around the magnetic core member 16a. And the magnetic core member 16a is shaped so as to bend around following the inner surface of the ring shaped case (12a), and is made from a layered amorphous foil material or a composite material so as to have a certain flexibility.
摘要:
A soft magnetic member (5) which is formed by a composite of an organic object such as a metal grain powder, a flake, a ferrite grain powder, a ferrite, an amorphous film or a layered member of the amorphous film with 10 mm or lower thickness so as to satisfy a predetermined relationship with an antenna area, a circumference length, and a magnetic transmission ratio and a conductive member (7) which has approximately 10×10−8 Ωm or lower, more preferably 0.005 Ω or lower initial resistance are provided between the an antenna coil which is formed at least one loop and a metal surface (6) of the conductive member such as a metal casing. The magnetic flux which invades into the conductive object is blocked by the soft magnetic member (5) and the conductive member (7) so as to restrict the influence thereof. By doing this, it is possible to provide a reader/writer antenna for an RFID system in which it is possible to restrict a variance of a resonating frequency and an increase in a loss even if it is disposed so as to contact the conductive object such as a metal casing.
摘要:
A soft magnetic member which is formed by a composite of an organic object to satisfy a predetermined relationship with an antenna area, a circumference length, and a magnetic transmission ratio and a conductive member are provided between an antenna coil which is formed by at least one loop and a metal surface of the conductive member such as a metal casing. The magnetic flux which invades into the conductive object is blocked by the soft magnetic member and the conductive member so as to restrict the influence thereof.
摘要:
An antenna coil includes an air-core coil wound helically in a plane and a plate magnetic core member inserted in the air-core coil to be approximately parallel with a plane of the air-core coil. The magnetic core member is formed by a soft magnetic metal, an amorphous or ferrite, or a composite member of a powder, flake and plastic, or rubber. The magnetic core member is formed by performing an injection molding operation or a compressing molding operation of the composite member. Alternatively, the magnetic core member is a magnetic coating formed by applying and drying the composite member. A non-magnetic conductive plate that has a conductivity is layered on a surface of the air-core coil through which the magnetic core member is inserted. The conductive plate is made of a copper, a copper alloy, an aluminum or an aluminum alloy having 0.01 to 2 mm thickness. The antenna coil is operated by relatively high frequency while it is rigid relatively.
摘要:
It is an object of this invention to provide a wrist watch containing an RFID tag which maintains a sense of luxury and has comparatively high sensitivity. The wrist watch containing tag of this invention comprises a watch case having a ring-shaped frame, a glass lid, and a bottom lid; a drive section which is accommodated inside the watch case; a display section for displaying time which is driven by the drive section; and an RFID tag which is accommodated inside the watch case and comprises an antenna and an IC chip; the ring-shaped frame and/or the bottom lid having at least one slit therein, and the antenna comprising a wound coil which runs along the inner face of the ring-shaped frame so as to surround the drive section. The slit is filled with a nonconductive resin, affixing the opposing cutaway planes together.
摘要:
An antenna for a transponder comprises a magnetic core composed of layered amorphous metallic thin plates or composite plates of soft magnetic flakes and a synthetic resin, and a coil wound on the magnetic core. A transponder comprises two antennas set forth above, and a spiral antenna.
摘要:
A theftproof tag which is effective regardless of the material of the article to which it is attached. There is neither a change in resonance of a resonance circuit nor a decrease in the Q value due to the material of the surface of a theft monitored article, thereby decreasing errors in the operation of a theft monitor. The theftproof tag has a resonance circuit resonating to an electric wave at a specified frequency transmitted from a transmitting antenna, and having a coil unit and a capacitor electrically connected to both ends of the coil unit. The coil unit has a magnetic core member made of a composite material composed of a powder or flakes of a soft magnetic metal, and a plastic, and a winding wound around the periphery of the magnetic core member and connected to the capacitor, a portion of the magnetic core member facing the attaching surface of the article.
摘要:
The present invention is to provide compositions comprising organic compounds useful as a chemical industrial material or a fuel composition with the use of an alcohol such as ethanol as a material. It is a method for producing compositions using alcohol as a starting material and comprising: allowing alcohol to contact with an alcohol conversion catalyst such as hydroxyapatite (first step) and conducting a hydrogenation reaction respectively for all reaction products consisting of a liquid phase including alcohols, water and hydrocarbons of 4-12 carbons and a gas phase which is light gas containing paraffins, alcohols and olefins; all liquid phase reaction products consisting of all reaction products from which light gas has been removed; a liquid phase dehydration reaction products consisting of all reaction products from which light gas, unreacted alcohol and product water have been removed; and light gas (second step).
摘要:
The present invention provides a production method with which high molecular alcohols having an even number of carbon atoms such as 1-butanol, hexanol, octanol and decanol, and a mixture of these are efficiently collected through clean processes with the use of ethanol as a raw material. High molecular alcohols are produced from ethanol by using calcium phosphate-based compounds such as hydroxyapatite Ca10(PO4)6(OH)2, tricalcium phosphate Ca3(PO4)2, calcium monohydrogen phosphate CaHPO4.(0˜2)H2O, calcium diphosphate Ca2P2O7, octacalcium phosphate Ca8H2(PO4)6.5H2O, tetracalcium phosphate Ca4(PO4)2O or amorphous calcium phosphate Ca3(PO4)2. nH2O as a catalyst, using ethanol as a starting material, and setting a contact time at 0.4 second or longer.
摘要翻译:本发明提供一种制备方法,通过使用乙醇作为原料,通过清洁方法有效地收集具有偶数个碳原子的高分子醇如1-丁醇,己醇,辛醇和癸醇,以及它们的混合物 材料。 高分子醇通过使用磷酸钙基化合物如羟基磷灰石Ca10(PO4)6(OH)2,磷酸三钙Ca3(PO4)2,磷酸一氢钙CaHPO 4(0-2)H 2 O,二磷酸钙Ca 2 P 2 O 7 ,磷酸三钙Ca8H2(PO4)6.5H2O,磷酸四钙Ca4(PO4)2O或无定形磷酸钙Ca3(PO4)2。 nH 2 O作为催化剂,使用乙醇作为原料,并将接触时间设定为0.4秒以上。