Patent ID: 7113043

Claim:
A low-noise amplifier, comprising: a first amplification circuit, wherein the first amplification circuit includes a control terminal, a first terminal, and a second terminal, and wherein the second terminal is in communication with a first reference voltage; an input circuit in communication with the control terminal; an output circuit in communication with the first terminal; an impedance load in communication with the output circuit and the first terminal; and a feedback circuit in communication with the control terminal and the impedance load, wherein the feedback circuit comprises: a current source in communication with a second reference voltage; a comparator circuit, wherein the comparator circuit includes a first input, a second input and an output, and wherein the output is in communication with the control terminal; a first impedance in communication with the current source and the first input, wherein the first impedance is configured to generate a predetermined reference voltage corresponding to a predetermined reference current generated by the current source; and a second impedance in communication with the second input and the impedance load wherein the feedback circuit compares a voltage, corresponding to an output current associated with the first terminal, with the predetermined reference voltage to generate a bias signal applied to the control terminal for biasing the low-noise amplifier.