| 摘要 |
<p>RFID ANTENNA CIRCUITThe invention concerns an RFID/NFC antenna circuitcomprising an antenna (L) formed by at least three turns (S), the antenna having a first end terminal (D) and a second end terminal (E), two access terminals (1, 2) to connect a charge, a tuning capacitance (01, ZZ)for tuning at a prescribed tuning frequency, an intermediate tap (A) connected to the antenna (L) and distinct from terminals (D, E), connection means (CON1A) connecting the intermediate tap (A) to terminal (1), connection means (CON2E) connecting end terminal(E) to the capacitance terminal (C1E). According to the invention, third connection means (CON31, CON32) are provided connecting the capacitance terminal (C1X) and the second access terminal (2) respectively to a first point (P1) of the antenna (L) and to a second point(P2) of the antenna (L) connected to the first point of the antenna (L) by at least one turn (S) of the antenna (L).Figure 1A.</p> |
