| 摘要 |
<p>The circuit (1) has an external connection unit i.e. universal serial busconnector (9), including functional electrical contacts (3, 4) formed of connection points (5, 6) that are in connection with a radiofrequency antenna (11). The antenna is placed in a cover (13) fitted in the external connection unit. Capacitors (C1, C2) are arranged between the connection points and the electrical contacts. A protection unit protects the circuit, and includes switches for switching connection of the contacts with the circuit. An independent claim is also included for a device used as a communication device and including a smart card connected to connection points.</p> |
