Patent ID: 7389095
Filing Date: 2008-06-17
Classification: H04B

Abstract:
1. A variable frequency clock generator for timing the exchange of data signals via a digital data link between a radio frequency (“RF”) receiver and a base band processor at a rate that minimizes electromagnetic emissions causing interference (“EMI”), said variable-frequency clock generator comprising: a phase modulator configured to shift a fixed clock frequency signal to form a variable frequency clock signal having a variable frequency varying within a range of discrete frequencies being centered at a fixed clock frequency of said fixed clock frequency signal or at a multiple of said fixed clock frequency; and a phase-offset controller coupled to said phase modulator and configured to maintain an average frequency of said range of discrete frequencies such that said average frequency is substantially equal to said fixed clock frequency or said multiple of said fixed clock frequency, wherein said phase-offset controller synchronizes an average data rate based on said average frequency to said fixed data rate.