Telephonic communications – Substation or terminal circuitry – Conversion of signal form
Reexamination Certificate
2006-07-18
2006-07-18
Mei, Xu (Department: 2644)
Telephonic communications
Substation or terminal circuitry
Conversion of signal form
C333S167000
Reexamination Certificate
active
07079644
ABSTRACT:
An input-output balanced filter has a greatly reduced size and excellent stable electric characteristics. The input-output balanced filter includes two LC bandpass filter circuit units. A first LC bandpass filter circuit unit has a circuit structure in which a first LC parallel resonant circuit including an inductor and a capacitor is connected to a second LC parallel resonant circuit including an inductor and a capacitor via a connecting capacitor, while the second LC bandpass filter circuit unit has a circuit structure in which a third LC parallel resonant circuit including an inductor and a capacitor is connected to a fourth LC parallel resonant circuit including an inductor and a capacitor via the other connecting capacitor; and, the common side lines of the two LC bandpass filter circuit units are connected to each other via a connecting inductor which functions as a common line.
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Mizoguchi Naoki
Taniguchi Tetsuo
Briney, III Walter F.
Keating & Bennett LLP
Mei Xu
Murata Manufacturing Co. Ltd.
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