Patent ID: 6870417
Filing Date: 2005-03-22
Classification: H03K

Abstract:
1. A loss-less diode circuit comprising: (a) an input stage having an input port and an output node, said input port being adapted for receiving an input signal; (b) a diode equivalent circuit having an input, said input being coupled to said output node, said diode equivalent circuit including a reverse connected field effect transistor having a first terminal forming said input coupled to said output node, a second terminal forming an output, and a third terminal providing a control input, said field effect transistor having a diode providing a conduction path between said first and said second terminals when said field effect transistor is in an off state, and said control input being coupled to said input port through a transistor; (c) said diode equivalent circuit including a clamping device, said clamping device being coupled to the third terminal of said field effect transistor and providing a clamping voltage to protect said third terminal; and (d) the second terminal of said field effect transistor providing an output port for said circuit, and said output port being adapted for coupling to a capacitor and said capacitor being charged by the input signal applied to said input port.