Patent ID: 6239666
Filing Date: 2001-05-29
Classification: H04L

Abstract:
A uniform amplitude modulator comprising:means for receiving data represented by phase information and generating in-phase and quadrature components as analog signal components; andmeans for receiving the in-phase and quadrature components and generating a modulated signal whose amplitude is uniform,said means for generating in-phase and quadrature components comprising a device for outputting an analog signal component having any one of only three values, the three values comprising predetermined positive and negative values associated with the phase information and a value 0, and further comprising a device for outputting an analog signal component with more than three values associated with the phase information;further wherein the modulated signal is a GMSK signal; andfurther comprising integration means for integrating data represented by the phase information into 1-symbol 2-bit data; andfirst and second delay means for delaying the data from said integration means, the 1-symbol 2-bit data from said integration means and said first and second delay means being input to said means for generating in-phase and quadrature components as analog signal components.