Hideyuki Nosaka, Yo Yamaguchi, Akihiro Yamagishi, Masahiro Muraguchi. A Fractional Phase Interpolator Using Two-Step Integration for Frequency Multiplication and Direct Digital Synthesis. IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 86-A(2):304-312, 2003. [doi]
Abstract is missing.