Research Article
Experimental Demonstration of Coexistence of Microwave Wireless Communication and Power Transfer Technologies for Battery-Free Sensor Network Systems
Table 3
Power diagram for the demonstration.
| | Amount of change at each term | | Power level (dBm) | Power level (W) | Total efficiency (%) |
| | Signal source (dBm) | 47.6 | 47.6 | 57.5 | 100 | | Feed loss (dB) | 1.5 | 46.1 | | | | Tx antenna gain (dBi) | 14.9 | 61.0 | | |
| | Propagation loss (dB) | 39.1 | 21.9 | | |
| | Rx antenna gain (dBi) | 14.0 | 35.9 | | | | Feed loss (dB) | 0.3 | 35.6 | | | | Rectifier RF input (dBm) | — | 35.6 | 3.6 | 6.3 |
| | RF-DC conversion (%) (rectifier) | 5.5 | — | — | | | Supplied DC power (dBm) (thermal sensor) | — | 23.0 | 0.20 | 0.35 |
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