Method for a battery and passive power supply to an rfid tag and a switching circuit for carrying out said method

摘要: A controlled switching circuit (csc) comprises two switches (csl, cs2) fabricated with PMOS transistors and connected between its output terminal as well a battery (b) or rectifier rectifying voltage induced in an antenna. Conditions of the rectified time delay are checked. Only when gets unacceptable value exceeded preset tag circuits supplied by The invention provides for automatic selection way supplying RFID that it is stably far still possible, but just according to this rendered possible longer due very low drop across circuit, supply radio-frequency radiation field selected only depleted.