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Monitoring upstream frequency band

  • US 20030039319A1
  • Filed: 08/22/2001
  • Published: 02/27/2003
  • Est. Priority Date: 08/22/2001
  • Status: Abandoned Application
First Claim
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1. A spectrum analyzer, comprising:

  • an input adapted to receive an input signal;

    a mixer, coupled to the input, the mixer adapted to produce a down converted signal from the input signal;

    an adjustable decimation circuit, coupled to the mixer, that selectively decimates the down converted signal;

    a decoder, coupled to the adjustable decimation circuit, that measures power in the decimated signal; and

    a control circuit, coupled to the mixer, that selectively controls the frequency of the down converted signals from the mixer to measure power over a frequency spectrum of the input signal.

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