Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Patent
1996-08-28
1998-07-14
Pascal, Robert
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
333175, H03H 701
Patent
active
057810818
ABSTRACT:
In an LC-type dielectric filter, an inductor is formed on the uppermost or outermost insulation or dielectric layer and electrically connected at the opposite ends thereof to an upper electrode and a lower electrode which cooperate with a thin film dielectric layer to constitute a capacitor, by means of conductive vias. A method of adjusting a frequency of an LC-type filter is also provided. By the method, an optimum inductance for an inductor is calculated based on a measured capacitance and a desired frequency of the filter, and a pattern of the inductor which is capable of attaining the optimum inductance is selected from a group of predetermined patterns which differ in inductance. The inductor is formed on the outermost dielectric layer in such a manner as to have the selected pattern.
REFERENCES:
patent: 3947934 (1976-04-01), Olson
patent: 4157517 (1979-06-01), Kneisel et al.
patent: 4963843 (1990-10-01), Peckham
patent: 5023578 (1991-06-01), Kaneko et al.
patent: 5404118 (1995-04-01), Okamura et al.
patent: 5523729 (1996-06-01), Nakai et al.
Arakawa Michiya
Koike Kazumasa
Takemura Tatsuya
Tanaka Hideaki
Bettendorf Justin P.
NGK Spark Plug Co. Ltd.
Pascal Robert
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