INTEGRATED RAMP, SWEEP FRACTIONAL FREQUENCY SYNTHESIZER ON AN INTEGRATED CIRCUIT CHIP

摘要

An integrated ramp, sweep fractional frequency synthesizer system on an integrated circuit chip includes an integrated circuit chip having a fractional frequency synthesizer with a fractional divider responsive to a VCO and aΔΣmodulator for modifying the divisor of the fractional divider; and a ramp generator on the same integrated circuit chip; the ramp generator being responsive to a trigger signal to generate a ramp for sweeping the frequency of said fractional frequency synthesizer.