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Radio apparatus

  • US 9,590,663 B2
  • Filed: 04/14/2016
  • Issued: 03/07/2017
  • Est. Priority Date: 05/13/2015
  • Status: Active Grant
First Claim
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1. A radio apparatus comprising:

  • a baseband signal generator to generate a baseband signal;

    a sine wave substituting device to substitute a transition part of the baseband signal having a logic level switching from “

    0”

    to “

    1”

    or “

    1”

    to “

    0”

    with a multivalue signal of a sine wave;

    a delta sigma modulator to modulate the multivalue signal into a binary signal;

    a carrier wave generator to generate a carrier wave; and

    a carrier wave modulator to modulate the carrier wave with the binary signal of the delta sigma modulator;

    a power amplifier to amplify a transmission signal from the carrier wave modulator;

    a band-pass filter to band-limit the amplified transmission signal; and

    an antenna to output the band-limited transmission signal from the band-pass filter as a radio wave.

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