A universal GNSS (GPS/Galileo/Glonass/Beidou) SoC with a 0.25mm2 radio in 40nm CMOS. - Chun-Geik Tan; Fei Song; Tieng Yi Choke; Ming Kong; De-Cheng Song; Chee-Hong Yong; Weimin Shu; Zong Hua You; Yi-Hsien Lin; Osama Shana'a (ISSCC, 2013)