Patent ID: 8446217

Claim:
An amplifying circuit configured to convert an input signal into an amplified output signal comprising: an input node at an input side of said circuit and configured to receive said input signal; an output node at an output side of said circuit and configured to output said amplified output signal; a first gain element connected between said input and output nodes, the first gain element configured to convert an input voltage taken from said input signal into a current for forming said amplified output signal; a negative feedback loop over said first gain element, said negative feedback loop having first elements configured to provide input matching, wherein said first elements of said negative feedback loop comprise primary and secondary windings of a first transformer arranged in non-inverting configuration, and wherein said primary winding of said first transformer is configured to sense said current and said secondary winding of said first transformer is configured to add said sensed current to a gate of said first gain element; and a positive feedback loop over said first gain element, said positive feedback loop having second elements configured to provide additional input matching and gain enhancement of said first gain element.