A Self-Biased Active Voltage Doubler for Energy Harvesting Systems

Table 1

Comparison with several available active rectifiers.

Reference	[3]	[7]	[14]	This Work
Year	2012	2015	2013	2017
Technology	0.18 μm	0.18 μm	0.35 μm	0.15 μm
Topology	Op-amp based active rectifier	Self-Powered Rectifier	Series SSHI	Self-Biased Doubler
Input voltage	2.8 V	3 V	3.7 V	0.8 V
Operating frequency	200 Hz	200 Hz	200 Hz	200 Hz
Output voltage	2.78 V	2.9 V	3.63 V	0.98 V
Area	0.24 mm^2	0.016 mm^2	0.016 mm^2	0.001 mm^2
PCE	90%	91.2%	90%	61.7%
Inductor	No	No	Yes	No
Load	kΩ; μF	kΩ	kΩ	KΩ; μF