Radio frequency transponder, in particular for UHF, comprising an ESD-protection circuit

摘要

The transponder has an electrostatic discharge protection unit (20) with a modulation transistor and a transistor control unit. The control unit has a resistor (R) coupled in series with a capacitor. A strong electric current passes via the resistor during positive electrostatic discharge to form potential drop at resistor terminals for making an inverter (22) to send a high voltage signal, so that the transistor is made conductive.