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Multi-phase pulse modulation polar transmitter and method of generating a pulse modulated envelope signal carrying modulated RF signal

  • US 8,169,272 B2
  • Filed: 08/12/2010
  • Issued: 05/01/2012
  • Est. Priority Date: 04/16/2010
  • Status: Active Grant
First Claim
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1. A multi-phase pulse-modulated polar transmitter, comprising:

  • an envelope signal input end for receiving envelope signals;

    a plurality of constant-envelope radio-frequency (RF) signal input ends, each being for receiving input constant-envelope RF signals;

    a multi-phase pulse modulation module for receiving the envelope signals from the envelope signal input ends, so as to generate multi-phase (or multi-bit) pulse modulation signals according to the envelope signals;

    a plurality of signal modulation modules, each being for receiving one of the constant-envelope RF signals and modulating the received one of the constant-envelope RF signals according to one of the multi-phase (or multi-bit) pulse modulation signals, to thereby generate pulse-modulated RF signals that an envelope of each of the pulse-modulated RF signals carries phase information; and

    a plurality of power amplification modules, each being for receiving the pulse-modulated RF signals, amplifying power of each of the pulse-modulated RF signals and outputting the amplified pulse-modulated RF signals.

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