Abstract
Batteryless compact radios are highly needed
to realize many Internet-of-Things (IoT) applications, such
as miniaturized radio-frequency identification (RFID), wear-
able/implantable devices, and counter-counterfeit electronics.
To miniaturize the radios, it is necessary to integrate an antenna
on chip to transfer both power and data, eliminating the I/O pads
and crystal. In addition, the ultra-small die area precludes the use
of any on-chip energy storage (such as large capacitors or induc-
tors