Patent ID: 6836526
Filing Date: 2004-12-28
Classification: H03L

Abstract:
A modulus controller for use in a fractional frequency synthesizer to control a modulus factor of a modulus divider of said fractional frequency divider, said modulus controller comprising:a first factor input to receive a first digital data word having a first number of bits; a second factor input to receive a second digital data word having a second number of bits; a gain factor input to receive a gain factor digital data word indicating an integer multiplier for the first digital data word; and a modulus selection circuit in communication with the first factor input, the second factor input, and the gain factor input to provide a modulus control signal to said modulus divider to select the modulus factor of said modulus divider as a function of a sum of the second digital data word and a product of the first digital data word and the gain factor digital data word.