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Modulator and method for producing a modulated signal

  • US 20060280258A1
  • Filed: 06/12/2006
  • Published: 12/14/2006
  • Est. Priority Date: 06/14/2005
  • Status: Active Grant
First Claim
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1. A modulator for producing a modulated signal, the modulator comprising:

  • a direct modulation synthesizer circuit;

    a reference frequency oscillator for providing an input reference signal to the direct modulation synthesizer circuit for locking a carrier frequency to a stable frequency;

    a pre-emphasis unit for receiving data bits and for producing a modulating signal for direct modulation of the direct modulation synthesizer circuit, the modulating signal having data bit dependent voltage levels.

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