1. A Power-Harvesting Pad-Less Millimeter-Sized Radio
Abstract:
A wireless-powered pad-less single-chip radio is implemented in 65 nm
CMOS for applications in Internet of Things (IoT)and wireless tagging.
This fully-self-sufficient mm-wave radio has no pads or external
components (e.g., power supply), and the entire radio is a single chip with
dimensions of 3.7 mm by 1.2 mm. Toprovide multi-access, and to mitigate
interference, it uses two separate mm-wave bands for RX/TX and integrates
both antennas to provide a measured communication range of 50 cm. The
transmitter uses a modified Multipulse Pulse Position Modulation (MPPM)
with 2 GHz of bandwidth on a 60 GHz carrier to communicate the data
sequence as well as the local timing reference. The entire system operates
with standby harvested power below 1.5 µW and achieves an aggregate
data rate > 12 Mbps.