Low-noise amplifier circuit, radiofrequency system, and method for amplifying a radio frequency signal using a low-noise amplifier circuit

Abstract

An amplifier circuit includes an input port, a first transistor and a second transistor that form a cascode topology. An output port is coupled to a first drain of the first transistor and a second drain of the second transistor. A first capacitor is coupled between the input port and a node. A first inductor is coupled between a gate bias voltage and the node, and a second inductor is coupled between the node and a first gate of the first transistor. A second capacitor is coupled between the node and a second gate of the second transistor. A resistor is coupled between the output port and the second gate of the second transistor.

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