Patent ID: 9036737
Filing Date: 2015-05-19
Classification: H04L

Abstract:
1. A modulator comprising: a polar generation stage configured to generate an amplitude component and a phase component of a modulation signal; a differentiator stage configured to generate a differentiated phase component by differentiating the phase component of the modulation signal; an event detection stage configured to detect a high bandwidth event by detecting at least one of the amplitude component and the differentiated phase component meeting an event criterion; an amplitude inversion stage configured to generate a modified amplitude component by inverting the amplitude component in response to detecting the high bandwidth event; a phase offset stage configured to generate a modified differentiated phase component by, in response to detecting the high bandwidth event, adding, to the differentiated phase component, a phase offset having a magnitude of 180 degrees and a sign opposite to a sign of the differentiated phase component; an amplitude modulation stage configured to modulate the amplitude of a carrier signal responsive to the modified amplitude component; and a phase modulation stage configured to modulate the frequency of the carrier signal responsive to the modified differentiated phase component.