Patent ID: 8725105

Claim:
A low noise amplifier, comprising: a first transconductance cell (Gm cell), for receiving a first input signal to generate a first processed signal; a second Gm cell, for receiving a second input signal to generate a second processed signal, wherein the first input signal and the second input signal are a differential input pair of the low noise amplifier; a first assistant circuit, for receiving the first input signal to generate a first assistant signal; a second assistant circuit, for receiving the second input signal to generate a second assistant signal; a first adder, coupled to the first Gm cell and the second assistant circuit, for summing up the first processed signal and the second assistant signal to generate a first output signal; and a second adder, coupled to the second Gm cell and the first assistant circuit, for summing up the second processed signal and the first assistant signal to generate a second output signal, wherein the first output signal and the second output signal are a differential output pair of the low noise amplifier.