| 摘要 |
<p>The present invention refers to an antenna (7, 13, 14, 15, 16, 17, 18, 19), designed to be safe against unauthorized excitation and communication, with no mobile parts. Said antenna is suitable for application on radiofrequency identification (RFID) systems, including transponders and readers, wherein the problem to protect data and the integrity of the transponders at the air (RF) interface level is crucial. The antenna includes protective coils, especially suitable to proximity coupling smart-cards operating on the range of High Frequencies (HF) when is required to limit the reading range to about two centimeters. The antenna might be assembled in electronic documents, as identification cards, commercial cards and Mechanical Readable Travel Documents, providing protection at hardware level and also being compatibility with standard readers.</p> |
