1. P.E. Allen, D.R. Holberg, CMOS Analog Circuit Design (Oxford University Press, New York, 2002)
2. J. Bae, S. Radhapuram, I. Jo, T. Kihara, T. Matsuoka, A low-voltage design of controller-based ADPLL for implantable biomedical devices, in IEEE Biomedical Circuits and Systems Conference (2015), pp. 1–4
3. W.H. Chen, W.F. Loke, B. Jung, A 0.5-V, 440-
$$\upmu $$
μ
W frequency synthesizer for implantable medical devices. IEEE J. Solid State Circuits 47(8), 1896–1907 (2012)
4. K.H. Cheng, Y.C. Tsai, Y.L. Lo, J.S. Huang, A 0.5-V 0.4–2.24-GHz inductorless phase-locked loop in a system-on-chip. IEEE Trans. Circuits Syst. I Regul. Pap. 58(5), 849–859 (2011)
5. FCC Rules and Regulations 47 CFR Part 95, Subparts E (95.601-95.673) and I (95.1201-95.1219) Personal Radio Services (2002).
https://www.ecfr.gov/cgi-bin/text-idx?SID=6f17364a17caccdf29dbddacb84ad912&mc=true&node=sp47.5.95.e&rgn=div6
and
https://www.ecfr.gov/cgi-bin/text-idx?SID=6f17364a17caccdf29dbddacb84ad912&mc=true&node=sp47.5.95.i&rgn=div6