Abstract: An antenna has a base substrate 3, a coil 30 formed from a conductor 4 wound around the base substrate 3, and a plurality of terminals 5 connected to the conductor 4. Uncovered base substrate portions 31 where the conductor is absent are formed on the base substrate 3 except the start and end of turns of the coil 30. The terminals 5 are provided on respective sides of the coil 30 parallel to a coil axis and on the uncovered base substrate portions 31.

Abstract: A highly reliable electronic circuit board for suppressing propagation of noise and a power line communication apparatus using it are provided. An electronic circuit board of the invention is connected to a different electronic circuit board and including a first board having a first face and a second face opposed to the first face and a second board having a third face and a fourth face opposed to the third face.

Abstract: It is a first object of the present invention to provide a lithium secondary battery using a conductive polymer such as polyaniline, which exhibits a stable electrical conductivity over a long time. To achieve the first object, there is provided a positive electrode material for a lithium secondary battery, comprising an electrically conductive polymer having an amino group, a hydrogen bonding compound, and a protonic acid. Further, it is a second object of the present invention to provide a lithium secondary battery exhibiting a high charge-discharge capacity while using a conductive polymer such as polyaniline. To achieve the second object, there is provided a positive electrode material for a lithium secondary battery, comprising an electrically conductive polymer, and LiNiO2 and/or liFePO4.

Abstract: A method of producing a polymer of a sulfur-containing aromatic compound includes reacting, under heating, a halide of a sulfur-containing aromatic compound having at least one aromatic ring and at least one ring containing one or more disulfide bonds wherein one side of the disulfide-containing ring constitutes one side of the aromatic ring, with inorganic sulfur in an amount equivalent to 2 to 8 S atoms relative to 1 mol of the halide of the sulfur-containing aromatic compound in the presence of at least one inorganic base selected from the group consisting of an alkali metal hydroxide, an alkali metal hydrogen carbonate and an alkali metal carbonate and/or at least one organic base selected from the group consisting of a tri(lower alkyl)amine and a heterocyclic amine in an organic solvent.

Abstract: A circuit module is mounted with an IC that modulates and demodulates a multicarrier signal. The circuit module has a laminated board, which is provided internally with a plurality of conductive layers laminated having insulating layers in between, and an IC, which is provided with a plurality of ground terminals to be grounded. Of the plurality of conductive layers, a conductive layer provided proximate to the IC configures a ground layer electrically connected to the plurality of ground terminals.

Abstract: A polymer gel electrolyte composition includes a crosslinked polymer network matrix having a three-dimensional crosslinked structure that includes a solution of an electrolyte in a non-aqueous solvent, and a non-crosslinked polymer included within the crosslinked polymer network matrix. The non-crosslinked polymer includes (a) an ethylene unit and/or propylene unit, and (b) an unsaturated carboxylic acid unit having a carboxyl group esterified by a polyalkylene glycol having one terminal hydroxyl group protected.

Abstract: An antenna element, an antenna module, and an electronic equipment using these, are small-sized, high in transmitting and receiving performance, and capable of transmitting and receiving electric waves at a plurality of frequencies. The antenna element includes two antennas having at least a feeder portion and an open portion, and current is fed to each feeder portion. The antenna module includes at least an antenna and a mounting body in which the antenna is mounted, and current is fed to each feeder portion. The electronic equipment includes at least the antenna element or antenna module, a signal modulator, a signal demodulator, a controller, a man-machine interface, and a casing.

Abstract: A redox-active reversible electrode has a redox-active film on a surface of an electrically conductive substrate. The redox-active film includes a redox-active sulfur-containing substance which has at least one aromatic ring and a ring containing at least one disulfide bond, with a side of the disulfide-containing ring constituting a side of the aromatic ring, and which has a property that it is capable of reversibly releasing and receiving one or more electrons per disulfide-containing ring without the disulfide-containing ring being opened.

Abstract: An antenna apparatus includes a plurality of antennas having different resonance frequencies and a feeding section for supplying common power to feeding terminals of the plurality of antennas. Open terminals of the plurality of antennas are separate. As at least one of the plurality of antennas is implemented as a helical antenna having a helical conductor section trimmed, the transmission-reception band can be put into a wide band. Further, an antenna apparatus includes a plurality of antennas, a connection conductor provided between the antennas for connecting the antennas in series, a feeding section provided in one of terminal sections to which the connection conductor is not connected in the plurality of antennas connected in series, and an additional conductor provided in the other terminal section to which the connection conductor is not connected, wherein the additional conductor is an open end part.

Abstract: This invention provides an antenna module comprising: a helical antenna 1 including a base 2 and a pair of terminals 4, 5 and a helical area formed on the base 2; a power supply 7 for supplying power to one of the pair of terminals 4, 5 of the helical antenna 1; an opening connected to the other of the pair of terminals; an antenna substrate 9 on which the antenna 7 is mounted; a grounding area 10 formed in the vicinity of the power supply 7; and a peripheral conductor 16 formed at least a portion on the periphery of the antenna substrate 9, wherein the peripheral length of the peripheral conductor 16 formed on the periphery of the antenna substrate 9 is nearly integer times as long as ¼ wavelength of a resonance frequency.

Abstract: A chip antenna includes a substrate, a plurality of helical conductors provided on the substrate, and a pair of terminals provided on the substrate. One of the plurality of helical conductors is connected electrically to one of the terminals, and another one of the helical conductors is connected electrically to the other terminal. Thus, the antenna is of a small size, yet is a single unit which alone is capable of transmitting and receiving electromagnetic waves of a plurality of frequencies.

Abstract: This invention provides an antenna module comprising: a helical antenna 1 including a base 2 and a pair of terminals 4, 5 and a helical area formed on the base 2; a power supply 7 for supplying power to one of the pair of terminals 4, 5 of the helical antenna 1; an opening connected to the other of the pair of terminals; an antenna substrate 9 on which the antenna 7 is mounted; a grounding area 10 formed in the vicinity of the power supply 7; and a peripheral conductor 16 formed at least a portion on the periphery of the antenna substrate 9, wherein the peripheral length of the peripheral conductor 16 formed on the periphery of the antenna substrate 9 is nearly integer times as long as ¼ wavelength of a resonance frequency.

Abstract: An antenna apparatus includes a plurality of antennas having different resonance frequencies and a feeding section for supplying common power to feeding terminals of the plurality of antennas. Open terminals of the plurality of antennas are separate. As at least one of the plurality of antennas is implemented as a helical antenna having a helical conductor section trimmed, the transmission-reception band can be put into a wide band. Further, an antenna apparatus includes a plurality of antennas, a connection conductor being provided between the antennas for connecting the antennas in series, a feeding section being provided in one of terminal sections to which the connection conductor is not connected in the plurality of antennas connected in series, and an additional conductor being provided in the other of terminal sections to which the connection conductor is not connected, wherein the additional conductor is an open end part.

Abstract: A non-reciprocal circuit device has a length, a width, and a thickness denoted respectively by L1, L2, and L3, and the overall dimensions of 2.5 mm<L1<7.0 mm, 2.5 mm<L2<7.0 mm, and 1.0 mm<L3<3.5 mm. When a projected area of the substrate of the device is orthogonally projected on a plane parallel to a base surface of the substrate is denoted by S1, the substrate holds a proportional relation to S1/(L1×L2)=0.1 to 0.78. When a thickness of the magnet of the device is denoted by L4, the magnet holds a proportional relation of L4/L3=0.2 to 0.5. When a projected area of the magnet orthogonally formed on a plane parallel to a surface of the magnet is denoted by S2, they have a proportional relation of S1/S2=0.15 to 0.83.

Abstract: A redox active reversible electrode includes a conductive substrate and a redox active film formed on at least one surface of the conductive substrate. The redox active film contains a redox active sulfur compound and an electrically conductive polymer of a ? electron conjugated compound having p-type doping characteristics.

Abstract: The invention provides an antenna element, antenna module, and electronic equipment using these, which are small-sized, high in transmitting and receiving performance, and capable of transmitting and receiving electric waves at a plurality of frequencies. Such antenna element comprises two antennas having at least a feeder portion and an open portion, and current is fed to each feeder portion. The antenna module comprises at least an antenna and a mounting body in which the antenna is mounted, and current is fed to each feeder portion. The electronic equipment comprises at least the antenna element or antenna module, a signal modulator, a signal demodulator, a controller, a man-machine interface, and a casing.

Abstract: A polymer gel electrolyte composition includes a crosslinked polymer network matrix having a three-dimensional crosslinked structure that includes a solution of an electrolyte in a non-aqueous solvent, and a non-crosslinked polymer included within the crosslinked polymer network matrix. The non-crosslinked polymer includes (a) an ethylene unit and/or propylene unit, and (b) an unsaturated carboxylic acid unit having a carboxyl group esterified by a polyalkylene glycol having one terminal hydroxyl group protected.

Abstract: A compact non-reciprocal circuit device capable of handling a high power without impairment of the characteristics. The non-reciprocal circuit device contains a magnetic substrate that exhibits anisotropic behavior by application of a direct-current magnetic field. On the surface of the substrate, strip-lines are disposed at an angle, being insulated with each other. One end of each strip-line is grounded, and the other end of each is connected through a capacitor to a ground. Of the ends connecting the capacitors, one end connects to a termination resistor; the remaining ends connect each to an input terminal and an output terminal. The non-reciprocal circuit device exhibits non-reciprocal characteristics between the input and output terminals. The case of the device contains an insulating thermal conductor that serves as a heat-radiator for the termination resistor and the strip-lines.

Abstract: A chip antenna includes a substrate, a plurality of helical conductors provided on the substrate, and a pair of terminals provided on the substrate. One of the plurality of helical conductors is connected electrically to one of the terminals, and another one of the helical conductors is connected electrically to the other terminal. Thus, the antenna is of a small size, yet is a single unit which alone is capable of transmitting and receiving electromagnetic waves of a plurality of frequencies.

Abstract: A positive electrode for lithium secondary battery includes a collector obtained by forming a carbonaceous material film on the surface of a conductive substrate, and a positive electrode material layer carried on the carbonaceous material film side of the collector and containing an organic sulfide compound as a main active material.