Patent ID: 8687395

Claim:
A rectifier, comprising: an AC input for receiving an AC input signal; a DC output; at least one transistor for providing a rectified output signal to the DC output, the transistor being a field effect transistor; a threshold changing circuit coupled to a bulk of the transistor, the threshold changing circuit being adapted for electrically biasing the bulk of the transistor depending on the AC input signal to thereby change a voltage threshold of the transistor depending on the AC input signal; and a matching circuit, the matching circuit having a power input for receiving input power; a first matching circuit output coupled to the AC input, the first matching circuit output providing, in response to the received input power, a first voltage; and a second matching circuit output coupled to at least one of a gate of the transistor and the bulk of the transistor, the second matching circuit output providing, in response to the received input power, a second voltage; the matching circuit being configured such that a magnitude of the second voltage is higher than a magnitude of the first voltage.