Patent ID: 7804920
Filing Date: 2010-09-28
Classification: H03D,H04B

Abstract:
1. A method for mitigating clock-generated radio frequency interference in wireless mobile computing platforms comprising: identifying, using active radio frequency (RF) channel detection circuitry, a frequency range of at least one active channel of at least one wireless radio channel; identifying a frequency range of at least one clock harmonic; identifying an overlap, in whole or in part, between the frequency range of said at least one active channel and the frequency range of said at least one clock harmonic; estimating one or more of an amplitude, frequency, or spectral shape of said at least one clock harmonic within said overlap; calculating a predicted cost of a fundamental frequency shift over a range of clock fundamental frequencies by applying a radio-dependent weighting to said at least one clock harmonic; and shifting a fundamental frequency of at least one clock to shift the frequency range of said at least one clock to minimize said predicted cost to reduce interference in said one or more active radio channels.