Method and apparatus for reconfigurable frequency generation

摘要

A frequency generator ( 10 ) includes a direct digital synthesizer ( 14 ) having an accumulator ( 18 or 28 ) for providing an interim output and a digital interpolator ( 16 ) for interpolating the interim output to provide an output signal with reduced electromagnetic interference. The digital interpolator can include at least one converter among a digital-to-phase converter ( 22 ) or a digital-to-time converter ( 32 ). The frequency generator can further include a digitally programmable spreading function ( 12 ) applied to an input of the direct digital synthesizer.