Table 1 Performance comparisons of WPT system in conducting medium.
From: Optimal frequency for magnetic resonant wireless power transfer in conducting medium
Topylogy | Frequency | Conductivty | Transfer distance (cm)/coil diameter (cm) | Efficiency (%) | References |
|---|---|---|---|---|---|
Resonant coupling | 0.65 kHz | 5 S/m | 170/340 (0.5) | 59 | |
GHz WPT | 1–4 GHz | Tissue | 2/1–6 (2–0.33) | 0.4–0.004 | |
Inductive coupling | 70–520 kHz | 4 S/m | 6.6/17.6 (0.38) | 81–90 | |
Inductive coupling | 0.1–1 MHz | 4.5 S/m | 0.5/21 (0.023) | 95–35 | |
Resonant coupling | 2.12 MHz | 4 S/m | 4/6 (0.67) | 53 | |
Inductive coupling | 80 kHz | 4 S/m | 1.6/6 (0.27) | 75 | |
Resonant coupling | 10 MHz, 20 MHz | 1–8 S/m | 5/5 (1) | 66–42 | This paper |
