Low-noise amplifier

A receiver circuit comprising:

• a common source or common emitter low-noise amplifier (LNA) circuit for amplifying signals at an operating frequency f;
• and
• a termination circuit with a current input terminal connected to the output terminal of the LNA circuit,
• wherein the LNA circuit comprises:
• an input transistor arranged to, in operation, be biased to have a transconductance gm at the operating frequency f, and having a first terminal, which is a gate or base terminal, operatively connected to an input terminal of the LNA circuit;
• a shunt-feedback capacitor operatively connected between the first terminal of the input transistor and a second terminal, which is a drain or collector terminal, of the input transistor;
• and
• an output capacitor operatively connected between the second terminal of the input transistor and an output terminal of the LNA circuit,
• wherein the magnitude |Zin(f)| of the input impedance Zin of the termination circuit at the frequency f is less than 1/10 of the magnitude |ZCL(f)=1/(2π·CL) of the impedance ZCL(f) of the output capacitor of the LNA circuit, wherein CL is a capacitance value of the output capacitor.