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JP4712106B2 |
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JP4708469B2 |
A balun transformer includes: a drum-shaped core having a core unit and a pair of flanges arranged on both sides of the core unit; a plurality of terminal electrodes arranged on the flanges; a primary winding wound around the core unit, ...
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JP4702581B2 |
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JP4703698B2 |
A balun includes a first, second, and third metallic layers, a first dielectric layer disposed between the second and third metallic layers, and a dielectric substrate. The second metallic layer includes a first spiral line having sequen...
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JP2011100888A |
To provide a noise absorption device absorbing both normal mode noise and common mode noise by a single noise absorption device, and also to provide a noise absorption structure with countermeasures against noise by using the noise absor...
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JP4684244B2 |
An on-chip transformer balun includes a primary winding (401) as an input terminal of the on-chip transformer balun, and a secondary winding (402) as an output terminal of the on-chip transformer balun, wherein one of the primary winding...
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JP4683071B2 |
A common mode filter is provided as one in a three-layered structure with improved high-frequency characteristics. The common mode filter 1 has the three-layered structure including a first coil layer 14, a second coil layer 18, and a le...
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JP4678571B2 |
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JP4678401B2 |
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JP4678572B2 |
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JP4679006B2 |
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JP4674232B2 |
Method for forming a transformer ( 118 ) in a ceramic substrate. The method can include the steps of forming at least one conductive coil ( 119 a , 119 b) comprising a plurality of turns about an unfired ceramic toroidal core region ( 12...
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JP4674590B2 |
There is provided a balun transformer, in which first to fourth layer coils are stacked and coupled magnetically; one end of each coil of the first to fourth layer coils is grounded; the second and third layer coils are connected in para...
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JP4670368B2 |
To improve the reliability of a common mode choke coil array. Coil patterns 4a and 5a are stacked and formed on the upper side of a non-hole insulating layer 3 without holes at the respective points wherein they are apart from each other...
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JP4664619B2 |
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JP2011040509A |
To provide a structure for a symmetrical transformer, including two coils each having at least two turns so as to be achievable in two conductive layers, in which terminals of the coils are located at opposite sides of the structure.A sy...
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JP2011029222A |
To provide an electronic component in which a protrusion on a step relaxing layer partially fills a continuous gap formed between the step relaxing layer and a thin-film conductive pattern, thereby preventing moisture or a plating liquid...
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JP4622003B2 |
A laminated balun transformer that may be applied to the lines having various impedances is provided. The laminated balun transformer includes a magnetic substrate 1, a laminated body 2, a magnetic substrate 3, and external electrodes 4-...
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JP4600638B2 |
To thin (reduce height of) a coil component having at least two coils, such as a common mode choke coil and a transformer. In the coil component, an insulating layer 60, first and second coil conductors 11, 13 insulated by the insulating...
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JP4600519B2 |
To provide a transformer component having the good efficiency of magnetic coupling between windings and advantageous frequency characteristics. The transformer component 100 is provided with a magnetic core 10 and a first-fourth windings...
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JP2010279028A |
To provide a balun mounted device capable of matching the impedance of a transmission line balun.A balun mounted device includes a layered balun configured by opposing two balanced signal transmission lines 30, 35 and an unbalanced signa...
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JP2010279055A |
To provide a radio frequency transformer and its use with which the cost of a circuit is reduced by reducing the area to be used or other functions can be set by providing the facility for other components to be easily mounted.A radio fr...
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JP2010272809A |
To obtain a common mode choke coil that suppresses an increase of passage loss of a normal mode signal, while blocking the passage of common mode noise by generating an impedance to the common mode noise.The choke coil includes a toroida...
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JP4586799B2 |
To provide a transformer circuit facilitating a winding work to a core member and being capable of taking the midpoint of a winding without depending upon the routing of a wire. The transformer circuit 100 has a transformer part 10 and a...
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JP4586282B2 |
To provide a laminated balance transformer capable of reducing a ground side impedance without increasing the mounting area. Line parts 24 and 25 are disposed between ground electrodes 31 and 32 and formed in a strip line structure. Line...
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JP4586879B2 |
A coil component has a first core with a winding core portion, a second core with a winding core portion, a first coil wound on the winding core portion of the first core, and a second coil wound on the winding core portion of the second...
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JP4583017B2 |
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JP4569279B2 |
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JP2010226343A |
To provide a magnetic coupling device for reducing magnetic leakage and allowing miniaturization easily. The magnetic coupling device is provided that includes a magnetic core, a primary coil having a conductive layer wound around the ma...
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JP2010199223A |
To achieve the reduction in size of a pulse transformer simultaneously with reduction of leak inductance, and also to achieve the prevention of breakdown thereof simultaneously with the reduction of leak inductance.The pulse transformer ...
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JP2010182875A |
To provide a common mode choke coil designed to improve a frequency characteristic using an easily obtainable core material, and a noise filter applied with such a common mode choke coil.The choke coil is configured by winding a winding ...
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JP2010165863A |
To provide a coil component where the distance between wires is kept constant in all turns. The coil component 100 includes: a drum core 10 including a winding core section 11 and a pair of collar sections 12, 13 provided at both the end...
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JP4504474B2 |
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JP2010154516A |
To provide a resin multilayer device capable of achieving accurate impedance and low insertion loss, and having a balun having a simple and compact structure. The resin multilayer device includes: a substrate 10; balanced signal transmis...
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JP2010154517A |
To provide a resin multilayer device capable of providing a high-performance balancing filter, and having a balancing filter of a simple and compact structure. A GND layer 40, a first resin layer 22 formed on a substrate 10 or the GND la...
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JP2010135393A |
To obtain excellent operability in an impedance characteristic adjustment operation. A transmission-line transformer 1 which includes a core material 2 composed of a magnetic substance, and a transmission line 3 wherein the core material...
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JP2010130312A |
To reduce the number of winding wires to be wind around one drum type core in a surface-mount pulse transformer.The surface-mount pulse transformer is provided with: a drum type core 11A around which winding wires S1A, S2A are wound in t...
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JP4475848B2 |
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JP2010124336A |
To suppress the influence of characteristic fluctuation when a balun mounting device is mounted on a mounting board without complicating or multi-layering the structure of the balun mounting device.This balun mounting structure is provid...
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JP2010124223A |
To provide a resin multilayer device for achieving highly precise impedance and a low insertion loss, and for reducing the characteristic fluctuation of balun when a flip chip is mounted. This WLP resin multilayer device having balun is ...
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JP2010123813A |
To electrically connect a lower transmission line and electrode pads formed on the upper side of a resin layer without forming an opening in the resin layer that provides insulation between an upper transmission line and the lower transm...
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JP2010124337A |
To suppress the influence of characteristic fluctuation when a balun mounting device is mounted on a mounting board without complicating or multi-layering the structure of the balun mounting device.This balun mounting structure is provid...
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JP4470191B2 |
An object is to provide a laminated balun transformer that can achieve improved balance characteristics and suppress occurrence of parasitic inductance. The laminated balun transformer is a transformer that has an impedance transformatio...
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JP2010108990A |
To provide the balun transformer using a drum-type core that achieves good high frequency characteristics, even when the number of turns is different between the primary winding and secondary winding.The primary winding and secondary win...
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JP4441990B2 |
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JP4437153B2 |
A balance-to-unbalance transformer (balun) comprising a first signal input/output with two symmetrical poles, a second signal input with one pole, several first conductor loop regions, which are located between the two poles of the first...
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JP2010041499A |
To provide a downsized and highly reliable signal coupler.The signal coupler is provided with: a first coil 14 of a first metallic wire 13 bonded onto a pair of first pads 12a, 12b placed on a semiconductor substrate 11, forming a half l...
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JP2010040882A |
To provide a compact electronic component in which a capacitor is incorporated.A laminate 14 is formed by laminating a plurality of insulator layers. A coil is incorporated in the laminate 14. External electrodes 22a and 22c are connecte...
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JP4413687B2 |
To provide a transformer circuit by which a transformer function is obtained in a manner of on-chip without using a magnetic material such as ferrite, and to provide a method for manufacturing the same. The transformer circuit 100 compri...
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JP4407692B2 |
A coil unit including an annular toroidal core (11,21,31,41,51,61) two coils (12,22,32,42,52,62) wound over the toroidal core providing a bifilar winding, a winding-start positioning part (11C,21D,31C,41D,51B,61B), and a winding-end posi...
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