Table 3.

Comparison table of the state of the arts WPTs.

	JSSC'17	IMS'18	JSSC'15	CICC'18	TBioCAS'20
	Kim	Rahmani	Charthad	Johnson	Yu
Modality	On-chip inductive	On-chip inductive	Ultrasound	Ultrasound	Magnetoelectric
Delivered Power (mW)	0.7	1.2	0.1	0.35	0.09
Power efficiency (%)	0.2	0.1	NR*	NR*	0.064
Link distance (mm)	10	10	30	21.5	30
Volume (mm3)	2.25	0.64	NR*	6.5	8.2
Frequency (MHz)	144	434	1	2	0.25
Intervening medium	Air	Air	Muscle	Muscle	PBS

^*NR, Not reported.