Dihang Yang, David Murphy, Hooman Darabi, Arya Behzad, Asad A. Abidi, Stephen Au, Sraavan R. Mundlapudi, Kejian Shi, Weiyu Leng: A Sub-100MHz Reference-Driven 25-to-28GHz Fractional-N PLL with -250dB FoM. ISSCC 2022: 384-386