| 摘要 |
<p>The component has a first interface that is used in reader mode, and is connected to antennas (ANT1,ANT2) through external impedance matching circuit. A second interface is used in card mode and in reader mode, and is connected to the antenna and first interface through impedance matching external circuit. An internal module (MTD) is provided with first detection circuit to deliver first detection signal representing phase antenna matching quality when external impedance matching circuit and antenna are indeed connected between the first and second interface. Independent claims are included for the following: (1) a system comprising near filed communication component; (2) an communication apparatus comprising system; and (3) a method of checking matching of antenna.</p> |
