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Table 2 Comparison of published work regarding power-harvesting antennas

From: RF power harvesting: a review on designing methodologies and applications

Ref. Type Gain (dBi) Freq. (GHz) Dimension (mm) Sensitivity RF-DC PCE
[25] Air-substrate patch 7 2.45 261 × 5 30% @ 1 µW/cm2
[26] Polarization patch 5.1–5.8
5.8–6.1
90 × 160 23.8%–31.9%
22.7%–24.5%
[27] Patch 2.45 100 × 70 73.9% @ 207 µW/cm2
[28] Dual-linearly polarized patch 7.45–7.63 2.45 70 × 47.5 78% @ 295.3 µW/cm2
[29] Microstrip 5.3 160 8.5% @ −2.46 dBm
[30] Patch 1.9–3.2 40 × 40 × 0.8 20 µW/cm2 70% @ 50 µW/cm2
[31] Patch −20.20 0.915 Π × 6 × 1.584   ~ 60%
[32] Patch, metal strip 4.33
6.64
4.9
5.9
68 × 34 65.2%
64.8%
[33] Stack differential 5.8 120 × 40 44.1% @ 0.041 W/m2
[24] Cross dipole 1.8–2.5 70 × 70 × 13.2 −35 dBm 55% @ −10 dBm
[34] Dual-polarized patch 2.45 100 × 100 × 3.8 82.3% @ 22 dBm
[35] 1 × 4 quasi-Yagi 10.9
13.3
1.8
2.2
300 × 300 × 1.6 40% @ 455 µW/cm2
[36] Dipole 0.915
2.45
60 × 60 × 60 1 µW/cm2 48% @ 0 dBm
39% @ 0 dBm
[37] Microstrip 8.6 2.45   83%
[38] Patch 4 2.45 70%
[39] Patch 2.19
3.6
2.45
5.8
40 × 43 65% @ 10 mW/cm2
46% @ 10 mW/cm2