Patent ID: 8344774

Claim:
A frequency synthesizer for generating an output frequency, the frequency synthesizer comprising: an oscillator that is capable of generating a first frequency; and an output divider coupled to the oscillator and to a controller, the output divider being configurable to allow the oscillator to generate a second frequency to prevent degradation in phase noise due to an interference to the first frequency of the oscillator, and to generate the output frequency from the second frequency, wherein the controller configures the output divider by determining a division factor corresponding to the output divider and the second frequency corresponding to the oscillator based on the output frequency and an aggressor frequency, the aggressor frequency being capable of causing interference to the first frequency; and a memory having a look-up table coupled to the controller, wherein the look-up table comprises one or more division factors relating to interference in generation of the output frequency by the oscillator and the output divider, wherein the controller selects the division factor from the one or more division factors.