Table 3 RF Harvesting System Supplying Batteryless, Backscatter Wireless Sensor Node29.
From: Efficient and Sensitive Electrically Small Rectenna for Ultra-Low Power RF Energy Harvesting
RF Harvesting system | S (μW/cm2) | Pin (dBm) | Vo.c. (V) | Δτa (s) | Δτb (s) | Δτc (s) | \({{\boldsymbol{\eta }}}_{{\bf{t}}{\bf{o}}{\bf{t}},{\boldsymbol{\Delta }}{{\boldsymbol{\tau }}}_{{\boldsymbol{a}}}}\) (%) | \({{\boldsymbol{\eta }}}_{{\bf{t}}{\bf{o}}{\bf{t}},{\boldsymbol{\Delta }}{{\boldsymbol{\tau }}}_{{\boldsymbol{c}}}}\) (%) | Delivered Power to node (μW) |
|---|---|---|---|---|---|---|---|---|---|
single rectenna | 0.04 | −22.4 | 0.098 | — | — | — | — | — | — |
0.39 | −12.5 | 0.35 | 1227 | 0.735 | 9 | 0.59 | 23.34 | 160.7 | |
2.25 | −4.9 | 0.925 | — | — | — | — | — | — | |
rectenna-array | 0.04 | −19.4 | 0.201 | — | — | — | — | — | — |
0.1237 | −14.5 | 0.37 | 883 | 0.685 | 22.5 | 1.3 | 14.8 | 172 | |
2.25 | −1.9 | 1.85 | — | — | — | — | — | — |
