Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Reexamination Certificate
2005-03-08
2005-03-08
Cuneo, Kamand (Department: 2841)
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
C336S065000, C336S232000
Reexamination Certificate
active
06864776
ABSTRACT:
In a coupling adjusting structure for a double-tuned circuit according to the present invention, first and second coils are configured such that a pair of first conductive patterns formed on a first surface of a printed circuit and a corresponding pair of second conductive patterns formed on a second surface of the printed circuit board are connected via corresponding connecting conductors, thereby making the first and second coils low and thin. Also, one end of the first coil and the corresponding end of the second coil are disposed close to each other, a first ground conductive pattern is disposed at least on the first surface of the printed circuit, and a first jumper connected to the first ground conductive pattern is disposed between the first and second coils so as to adjust an inductive coupling of the double-tuned circuit, thereby achieving a coupling adjusting structure for a double-tuned circuit whose inductive coupling is adjustable.
REFERENCES:
patent: 3820045 (1974-06-01), Igarashi
patent: 3836881 (1974-09-01), Koizumi
patent: 5777277 (1998-07-01), Inagawa
patent: 132 226 (1978-06-01), None
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patent: 4-245410 (1992-04-01), None
patent: 04-245410 (1992-09-01), None
patent: 04 290 005 (1992-10-01), None
patent: 10-303 026 (1998-11-01), None
Alps Electric Co. ,Ltd.
Brinks Hofer Gilson & Lione
Bui Hung S.
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