| 摘要 |
<p>An NFC reader (12) that measures the near-field free-space channel capacity between the reader (12) and an NFC tag (14), the reader further comprising: a transmitter (16) and a receiver (18) each operatively connected to an antenna (20); a first peak detector (50) adapted to measure an amplitude of a transmission current in the antenna (20) as emitted by the transmitter (16); a second peak detector (52) adapted to measure an amplitude of a reception current in the antenna (20) as received by the receiver (18) and a noise detector (54) operatively coupled to the antenna (20) for determining a level of noise in a signal in the antenna (20).</p> |
