Optimization of the Coupling Coefficient of the Inductive Link for Wireless Power Transfer to Biomedical Implants

Table 5

Performance comparisons with previous works of inductive link WPT system for cm-sized IMDs.

Reference		[18]	[43]	[56]	[57]	This work
Tx	Rout (mm)	14	12	7.5	15	26
	Rin (mm)	9	4.7	—	—	14
	n1	5	2	1	1	7
Rx	R2 (mm)	0.5	5	2.9	10	5
	n2	7	4	1	1	5
h (mm)		12	10	16	20	20
Frequency (MHz)		20	13.56	300	200	25
RL (kΩ)		0.25	0.5	10	0.47	1
PTE, η (%)		1.4	27.7	2.8	47.6	44.1
MPDL (mW)		2.2	—	0.8	29.8	145.4