Patent ID: 6046643
Filing Date: 2000-04-04
Classification: H03C,H03L,H04L

Abstract:
A radio-frequency signal generator, comprising:a voltage-controlled oscillator for producing a radio-frequency signal;a frequency divider having an input connected to said voltage-controlled oscillator and an output supplying a first clock signal;a first accumulator aggregating a first reference signal under control of the first clock signal;a second accumulator aggregating a second reference signal under control of a second clock signal;a first digital filter filtering a difference signal obtained from the two aggregated reference signals and supplying an output signal;a second digital filter filtering an input signal;a digital-analog converter producing an analog signal from the output signal of said first digital filter;an adder connected between said first digital filter, said second digital filter and said digital-analog converter; andan analog filter filtering the analog signal fed to said voltage-controlled oscillator.