Patent ID: 7606546
Filing Date: 2009-10-20
Classification: H04B

Abstract:
1. A system for communicating radio frequency (“RF”) signals that is compliant with emission masks defining permissible levels of electromagnetic interference (“EMI”), the system comprising: an RF antenna subsystem including: a high-speed digital link configured to exchange said digitized data signals with said output port to propagate said digitized data signals using said variable frequency clock signal, wherein said input modulation signal spreads equal amounts of signal energy of said digitized data signals above said average frequency and below said average frequency; wherein the variable step-size includes a first step size from a precedent frequency to a subsequent frequency for a first subset of frequencies of said range and on a second step size for a second subset of frequencies the first step size determining a first portion of the shape for said clock signal over for each clock cycle, and said second step size determining a second portion of the shape for said clock signal.