Compact and High-Efficiency Rectenna for Wireless Power-Harvesting Applications

Table 2

RF-to-DC conversion efficiency vs. power input and frequency.

Reference	Max efficiency (%)	Power input (dBm)	Rectenna size	Frequency (GHz)
[3]	20	−16.7	19 × 22 mm^2	2–18
[5]	72	19.4	10.5 cm	10
[16]	25	0	1.5 × 1.5 cm^2 per unit cell	10
This work (shunt)	34	7	13.3 × 8.2 mm^2	10
This work (doubler)	43	6	19.7 × 7.4 mm^2	10