Digital filter and reference signal cancelling device and...

Details Digital filter and reference signal cancelling device and... Digital filter and reference signal cancelling device and...

2006-08-22

2006-08-22

Chaki, Kakali (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07096244

ABSTRACT:
A second-order bandpass IIR type digital filter, assuming that a sampling frequency is six times as large as a central frequency of a passing frequency band, a first-order input feedback coefficient b1is set at −1+2−nand a second-order input feedback coefficient b2is set at 1−2−(n−1)(n: an odd number of 3 or larger). In this configuration, second-order IIP type digital filter with a simple arrangement and high accuracy can be provided. In a reference signal canceling apparatus, using such a digital filter, the reference signal can be canceled effectively and completely.

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