Design Techniques for Self-powered Microsystems. - Brian P. Otis; Robert G. Egbert; S. Haq; Jeremy Holleman; Julie R. Hu; Y. Liao; Jagdish Nayayan Pandey; Shailesh Rai; Fan Zhang 049 (ISCAS, 2009)

A 1.56GHz wide-tuning all digital FBAR-based PLL in 0.13µm CMOS. - Julie R. Hu; Richard C. Ruby; Brian P. Otis (CICC, 2010)

A 1.5GHz 0.2psRMS jitter 1.5mW divider-less FBAR ADPLL in 65nm CMOS. - Julie R. Hu; Richard C. Ruby; Brian P. Otis (CICC, 2012)

A 1.575GHz, 1.63mW CMOS Injection-Locked Ring Oscillator Powered by FBAR-Based PLL Reference. - Kangmin Hu; Julie R. Hu; Brian Otis; Patrick Yin Chiang (ISCAS, 2020)