Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Patent
1997-04-21
2000-10-17
Bettendorf, Justin P.
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
333184, 336200, A03H 701
Patent
active
061338095
ABSTRACT:
An LC filter is disclosed which exhibits excellent attenuation characteristics in a high-frequency range and substantially preserves its self-inductance and Q-factor. The LC filter is constructed of a laminated block formed by laminating insulating sheets each provided with a coil conductor. The coil conductors are connected in series to each other through via-holes to form a coil. Input/output external electrodes and ground external electrodes are disposed on the surfaces of the laminated block. The insulating sheets are laminated in a direction perpendicular to the input/output external electrodes and parallel to the mounting surface. The coil is axially placed perpendicular to the input/output external electrodes and parallel to the ground external electrodes and the mounting surface. A distributed capacitance is generated between the coil and each of the ground external electrodes to form a capacitor.
REFERENCES:
patent: 3812442 (1974-05-01), Muckelroy
patent: 5392019 (1995-02-01), Ohkubo
patent: 5530411 (1996-06-01), Nakata et al.
patent: 5777533 (1998-07-01), Kato et al.
Azuma Takahiro
Kaneko Toshimi
Nakata Yasuhiro
Tomohiro Takashi
Yamamoto Hidetoshi
Bettendorf Justin P.
Murata Manufacturing Co. Ltd.
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