Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Patent
1996-10-17
1998-05-12
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
327555, 327556, 327557, 327558, 327559, 327311, 327561, 333172, 330107, 330294, H03K 500
Patent
active
057511845
ABSTRACT:
A low electric power consumption filter circuit includes an amplifying portion including an odd number of serial MOS inverters. A grounded capacitance is connected between an output of the amplifying portion and ground. A pair of balancing resistances connect an output of the MOS inverter to a supply voltage and ground at a previous stage of the last MOS inverter. A feedback impedance connects an output of the amplifying portion to its input. An input impedance is connected to the input of the amplifying portion.
REFERENCES:
patent: 4057766 (1977-11-01), Lee
patent: 5631941 (1997-05-01), Shou et al.
Shimada, Kimiaki, "Fundamental Knowledge of Analog Filter and Practical Designing Method", p. 27, Fig. 3-11(b), Seibundo-Shinkosha, 1993 (Title and notes of figure translated by applicant) No Month.
Shou Guoliang
Takatori Sunao
Yamamoto Makoto
Callahan Timothy P.
Le Dinh T.
Sharp Kabushiki Kaisha
Yozan Inc.
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