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JP3987695B2 |
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JP2007250891A |
To provide power electronics equipment that is capable of reducing effects as noise due to an external magnetic flux while reducing temperature dependency of a coupling factor, and also, capable of transferring a signal while electricall...
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JP2007243208A |
To provide a more compact balun transformer. The compact balun transformer has primary and secondary conductor loops. Each of these loops is substantially prepared in a flat spiral structure. However, one of these loops, a primary or sec...
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JP2007234896A |
To reduce noise signal due to external magnetic field effectively upon transmitting a signal from a circuit of one side to the circuit of the other side through a magnetic field under electrically insulated condition. The signal transmit...
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JP3960977B2 |
To provide a winding-type common mode coil which has terminal electrodes with excellent mechanical strength and a structure where contact between the wire connected to one terminal electrode and an adjacent another terminal electrode in ...
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JP3956061B2 |
To provide a high-resistance magnetic film with an adequate uniaxial magnetic anisotropy, high saturation magnetization, and good high-frequency characteristics in permeability. A uniaxial magnetic anisotropic film is represented by a ge...
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JP2007189396A |
To realize a balun capable of being sufficiently miniaturized while a mounting area is reduced and a height is lowered.The balun has a first conductor pattern 110 extended so as to form a current path between its own one end 110E1 and an...
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JP3936562B2 |
To provide a thin and easily adjustable coupling adjusting structure for multiple-tuned circuit. This coupling adjusting structure for multiple-tuned circuit is formed by connecting first conductor patterns 5 and 9 in which first and sec...
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JP3929533B2 |
To improve productivity of a small transformer and to reduce the number of parts by eliminating the operation of sticking a protective tape for insulation between a lead of a primary coil and a secondary coil. Steps 6a and 6b are formed ...
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JP2007513513A |
A digital subscriber line (DSL) modem comprising a line interface transformer ( 40; 50; 80; 100; 130 ) having a primary circuit ( 42; 52; 81; 131 ) for coupling to a transmission line and a secondary circuit ( 44; 56; 82; 132 ) for outpu...
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JPWO2005043564A1 |
The internal magnetic sheet 13 is created on the PET sheet B1, the dielectric sheet 14 is created on the PET sheet B2, the conductive patterns 17 and 18 are created on the dielectric sheet 14, and the central portion of the internal magn...
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JPWO2005043563A1 |
The internal magnetic sheet 13 is created on the PET sheet B1, the dielectric sheet 14 is created on the PET sheet B2, the conductive patterns 17 and 18 are created on the dielectric sheet 14, and the central portion of the internal magn...
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JP3904442B2 |
To achieve reduction in size and cost by avoiding the lowering of common mode noise restraining function of a common-mode chock without using an automatic transformer even if it is used in a transmission line of DC superposition. In a tr...
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JP3889354B2 |
To provide an Mn-Zn-based ferrite which is excellent in a DC superimposing property as a magnetic core used for a transformer for transmission and the like at a wide temperature zone and whose magnetic permeability is high, the magnetic ...
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JP2006351860A |
To provide a common-mode choke coil suitable for miniaturization capable of preventing common-mode noise over a wide band without upsizing it and without attenuating a high frequency normal mode signal.A pair of windings 2, 3 are formed ...
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JPWO2005032226A1 |
The multilayer laminated circuit board 10A of the present invention is obtained by laminating a laminated transformer 10, a laminated component sheet 30 on which laminated components are formed, and a wiring sheet 50 on which a circuit p...
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JP2006339257A |
To achieve structure for relatively easily and inexpensively manufacturing a magnetic coupling element 1, where a primary side coil 2 for transmitting an electric signal and a secondary side coil 3 for receiving an electric signal are el...
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JP3851588B2 |
To materialize high efficiency of a coil and a coil assembly. A flat wire coil 10 which forms an α winding coil and a magnetic core part 20 of the flat wire coil 10 are provided. In the flat wire coil 10, at least the cross sectional ar...
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JP3849490B2 |
To provide a thin transformer which is used for a switching power supply for various kinds of electronic apparatuses, can meet safety standards, is small in size to have a minimum dead space, can withstand high voltage and is low in cost...
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JP2006245591A |
To provide a 3dB coupler, capable of achieving superior capacitive coupling and inductive coupling between the primary side and the secondary side of a transformer with a small size.A first conductor on the primary side of a transformer ...
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JP2006245129A |
To solve the problem that an inductor needs a large space and exhibits a strong non-linearity since it uses a magnetic substance as a core, and designing of the inductor requires experience and sophisticated simulator, and a very expensi...
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JP2006237437A |
To simplify a high-frequency tuning circuit equipped with a circuit that suppresses an image frequency; to provide a composite coil which is made a adjustment-free set, reduced in size, and made to decrease in price; and to provide a met...
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JP3818478B2 |
To obtain a sheet transformer which has a thin type being suitable for adapting for a switching power source module, a low conductive resistance, a high efficiency and a low cost. A sheet transformer is provided with a coil part and a fe...
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JP3816687B2 |
To provide a transformer with high reliability capable of preventing disconnection of thinned coil ends by an external force generated upon mounting. A coil bobbin 11 is provided with a plurality of coil winding 151-156 and contains a co...
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JP2006210617A |
To provide a balun transformer of of wide band which is low in profile.In the balun transformer, a first transmission line, where unbalance signal is transferred and second and third transmission lines where balance signal is transferred...
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JP2006196639A |
To provide an inductor capable of coping with narrow deviations with a small size and low cost, while being a fixed type coil.A 3-terminal face connection electrode 2 is mounted on a bottom surface of a drum core 1, having three flanges....
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JP3800121B2 |
To provide a laminated balun transformer in which phase characteristic can be adjusted. A third line 24 and a first line 25 are electromagnetically coupled at a joint part P (line connection) as a coupler. A fourth line 27 and a second l...
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JP2006173543A |
To provide a small-sized and high-performance balun which connects a balancing circuit and an unbalancing circuit, for example.First and second winding wires 8 and 10 which are close to each other are wound on the outside of a tubular bo...
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JP3784782B2 |
To provide a three-line balun transformer which is easy to design and is manufactured with a simple structure. A balun transformer 50 is constituted of an unbalanced port 54 where an unbalanced signal is inputted or outputted, first and ...
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JP3780414B2 |
Line elements 24 and 27 are connected in series through a relay terminal 43, to constitute an unbalanced transmission line. Line elements 25 and 28 each constitute a balanced transmission lines. The strip lines 24 and 25 are electromagne...
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JP2006135056A |
To provide a plane balun built in a printed board wherein a board can be easily assembled without multilayering and degrading performance.A transmission line (1) for balance signal and a transmission line (2) for unbalance signal are for...
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JP3778569B2 |
In an amplifier module circuit, an input transformer (TI) transforms an input signal (ISU) into a transformed input signal (ISB), which is supplied to a pair of amplifiers (AMPA, AMPB). In addition to windings (W1, W2) for input signal t...
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JP2006121313A |
To provide a balun transformer designing method in which a balun transformer with excellent electric characteristics can easily be designed.In the balun transformer designing method for designing a balun transformer transforming an unbal...
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JP2006108416A |
To reduce the cost of a high-frequency power amplifier by mounting an air-core coil on a wiring board without using a bulk feeder after forming the air-core coil.A manufacturing method is provided for an electronic device having a power ...
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JP3766262B2 |
To provide a balun transformer, the productivity of which will not decrease, and the design and manufacture of which do not become complicated, even if the impedance ratio between the frequency band used and a balanced transmission line/...
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JP2006094378A |
To provide a communication apparatus for transmitting/receiving a signal via a power line through magnetic coupling between a signal line and the power line, a signal superimposing apparatus for superimposing the signal on the power line...
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JP2006086335A |
To easily obtain desired characteristics without applying physical change to the shape of a core.A magnetic element has a core 1 made of a magnetic material, a winding wire 2 wound around the core 1, and a magnetic field supplying means ...
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JP2006080373A |
To provide an integral coil which can have a small coupling efficiency, have the large Q value of a coil L1 in the vicinity of 80 MHz, and have a large inductance of a coil L2.A drum core 2 made of a magnetic material is mounted on the b...
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JP2006068195A |
To provide a transformer for generating transmitting pulses for ultrasonic diagnostic apparatus having high binding between a primary side and a secondary side.A wiring length can be made longer in the same winding line number by making ...
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JP3755975B2 |
To reduce unnecessary pulse, and suppress generation of noise harmful to a screen by providing a second diode whose anode is connected to the connection part between a resonant capacitor and the cathode of the first diode, and whose cath...
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JP2006508589A |
There is provided an arrangement of components for use in a power line communication system. The arrangement includes (a) an inductive coupler having a core with an aperture through which a coaxial power cable is routed, where the coaxia...
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JP3752433B2 |
To provide a laminated balun transformer, in which insertion loss is improved by optimizing electromagnetic connection between strip lines and miniaturization is realized. In a laminated balun transformer 10, having a dielectric layer 12...
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JP3749770B2 |
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JP3749771B2 |
To provide such a flyback transformer that can realize high-voltage insulation easily at a low cost, can reduce alternating electric field, and can be handled easily. Diodes 3a to 3d for rectifying high voltage are serially connected on ...
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JP2006041017A |
To provide an electronic component assuring low resistance, heavier current and less variations in characteristics.A first groove 52 is formed to a first green sheet 42 by irradiating the upper surface 42a of the first green sheet 42 wit...
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JP2006033619A |
To provide a transformer for a broadcast wave distributor capable of rapidly improving gain of signal transmission.In the transformer for a broadcast wave distributor, one distribution transformer 1 being an approximately cylindrical fer...
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JP2006033618A |
To provide a transformer for a broadcast wave distributor capable of rapidly improving the gain of signal transmission.One distribution transformer and two impedance transformers are arranged so that all four cylinder holes in total, i.e...
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JP2006013064A |
To provide a common mode choke coil and its impedance adjusting method wherein a necessary inductance value is obtained, while a necessary characteristic impedance can be obtained.In the common mode choke coil 31, a winding 36 is densely...
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JP2006014276A |
To obtain a laminated balun transformer having an excellent electric characteristic, capable of stably attenuating a harmonic wave.The laminated balun transformer is structured of a lamination 10a having laminated ceramic dielectric laye...
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JP2005353917A |
To provide a laminated sheet transformer with a high coupling coefficient between primary and secondary sides, and to provide low cost ultrasonic diagnostic equipment having an excellent transfer characteristic by using this laminated sh...
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