Comparison of ring and LC oscillator-based ILFDs in terms of phase noise, locking range, power consumption and quality factor

Estimating the locking range of analog dividers through a phase-domain macromodel

“…Analog ILFDs represent a promising solution for the realization of next-generation frequency synthesizers due to their lower power consumption compared to conventional digital dividers. For this reason, many different ILFD architectures have been proposed or are currently under investigation [1], [2], [3], [4], [5]. A key figure of merit of such devices is the Locking Range (LR), that is the frequency interval over which the correct frequency division occurs.…”