This book documents some of the most recent advances on the physical layer of the Internet of
Things (IoT) including sensors circuits and systems. The application area selected for
illustrating these advances is that of autonomous wearable systems for real-time medical
diagnosis. The book is unique in that it adopts a holistic view of such systems and includes
not only the sensor and processing subsystems but also the power communication and security
subsystems. Particular attention is paid to the integration of these IoT subsystems as well as
the prototyping platforms needed for achieving such integration. Other unique features include
the discussion of energy-harvesting subsystems to achieve full energy autonomy and the
consideration of hardware security as a requirement for the integrity of the IoT physical
layer. One unifying thread of the various designs considered in this book is that they have all
been fabricated and tested in an advanced low-power CMOS process namely GLOBALFOUNDRIES 65nm
CMOS LPe.
