Document Type and Number:
Japanese Patent JPS6145409
Kind Code:
B2
Abstract:
A bandpass filter is disclosed which includes a low-pass filter and an analog delay circuit in which the delay time is set by a clock signal. THe analog delay circuit samples the voltage of the low-pass filter capacitor and delays the sampled voltage according to the clock signal. The output of the analog delay circuit is then used to equalize within a certain period of time the voltage of the low-pass filter capacitor. The analog delay circuit may consist of an integrated circuit BBD (Bucket Brigade Device) or CCD (Charge Coupled Device).
Inventors:
FUJISAKI HISASHI
Application Number:
JP3062977A
Publication Date:
October 08, 1986
Filing Date:
March 18, 1977
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
H03H15/02; H03H19/00
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