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Fixed coefficient high decimation filter

  • US 5,617,344 A
  • Filed: 06/01/1995
  • Issued: 04/01/1997
  • Est. Priority Date: 08/14/1992
  • Status: Expired due to Term
First Claim
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1. A digital filter, comprising:

  • (a) a decimation filter with a first filter input, a first filter output, and an adjustable decimation rate input, with the decimation rate of said decimation filter dependent upon said decimation rate input and with the gain of said decimation filter dependent upon said decimation rate;

    (b) a multiplier with a multiplier input, a multiplicand input, and a product output, said multiplicand input coupled to said first filter output and said multiplier input with the reciprocal of said gain; and

    (c) a fixed coefficient filter with second filter input coupled to said product output and with a second filter output.

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