Experimental Confirmation of Wandering Spurs in a Commercial Fractional-N Frequency Synthesizer with a MASH 1-1-1 Divider Controller

Fractional-N frequency synthesizers can exhibit a phenomenon called wandering spurs which is undesirable in many applications. This paper presents experimental confirmation of the behavior in a fractional-
$N$
frequency synthesizer with a MASH 1-1-1-based divider controller.