Patent ID: 7907899
Filing Date: 2011-03-15
Classification: G06K

Abstract:
1. A circuit for a Radio Frequency Identification tag, comprising: first and second antenna input signal nodes configured to receive a first and second alternating input signal, respectively; and a power management unit having a plurality of successive stages, each stage coupled to the first and second antenna input nodes, at least one of the stages including: a dual-terminal rectifier device having first and second input terminals coupled to first and second antenna input signal nodes, respectively, the dual-terminal rectifier further having an output terminal and a gate, the gate configured to form a conductive channel that electrically couples the first and second input terminals to the output terminal in response to a gate voltage, the dual-terminal rectifier device configured to rectify a combination of the alternating input signals applied to the input terminals of the semiconductor device to generate a rectified output signal at the output terminal.