Research Article
A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations
Table 1
Comparison of near-field read-range.
| Environment | Transmission power at 10 dBm | Transmission power at 20 dBm |
| Air | 30 mm | 48 mm | Water container | 42 mm | 56 mm | Paper | 33 mm | 36 mm | Plant surface (corn) | 37 mm | 38 mm | Hand skin (human) | 24 mm | 29 mm |
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