Title:
CLOCK CONTROL FILTERING DEVICE
Document Type and Number:
Japanese Patent JPS59112718
Kind Code:
A
Abstract:
A clock-controlled filtering arrangement for suppressing a number of interference frequencies related to a clock frequency, which comprises a time-discrete comb filter included in a negative feedback loop for a selective negative feedback of the said interference frequencies, which time-discrete comb filter is connected to an output of a clock generator for controlling the frequency location of the pass ranges of the comb filter. In order to avoid on the one hand the introduction of quantizing noise and the use of additional circuits, such as A/D and D/A converters, and on the other hand the occurrence of error cumulation while maintaining an adequate interference suppression, the time-discrete comb filter is of the switched capacitor N-path filter type.
Inventors:
ARUTAARU HERUMANUSU MARIA FUAN
Application Number:
JP22712083A
Publication Date:
June 29, 1984
Filing Date:
December 02, 1983
Export Citation:
Assignee:
PHILIPS NV
International Classes:
G11B7/09; H03D1/22; H03H19/00; (IPC1-7): G11B7/08; H03H19/00
Attorney, Agent or Firm:
Akihide Sugimura