Research Article
Experimental Demonstration of Coexistence of Microwave Wireless Communication and Power Transfer Technologies for Battery-Free Sensor Network Systems
Table 1
WPT classifications by principle.
| Type | Range | Power delivery | Functionality |
| EM coupling | Short | High | Communication | Magnetic resonance | Medium | High/medium | Power | Microwave power transmission | Long | Medium/low | Communication, sensors, and power |
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