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Direct conversion receiver and dc offset reducing method

  • US 20040097212A1
  • Filed: 08/28/2003
  • Published: 05/20/2004
  • Est. Priority Date: 01/29/2002
  • Status: Active Grant
First Claim
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1. A DC offset reducing method of reducing a DC offset occurring in a direct conversion receiver, comprising:

  • detecting a period of time having a high possibility of increasing a DC offset; and

    setting a time constant of a filter for cutting off a DC component existing on a signal path at a value smaller than that in general operation during the period of time, and thereby converging a transient response of a signal passed through the filter rapidly.

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