Active inductor and amplifier circuit

An amplifier circuit, comprising:

• a first electrical power source supply line where a first electric voltage is applied thereto;
• a second electrical power source supply line where a second electric voltage is applied thereto;
• a bias circuit that is driven by an electric voltage between the first electrical power source supply line and the second electrical power source supply line and generates a predetermined bias electric voltage;
• a first conductivity type first MOS transistor, a first conductivity type second MOS transistor, and a first conductivity type third MOS transistor, where biasing between gates and sources thereof is executed by the predetermined bias electric voltage of the bias circuit;
• a first conductivity type fourth MOS transistor with a source that is connected to a drain of the first conductivity type first MOS transistor, a gate that is connected to a second signal input terminal, and a drain that is connected to a first signal output terminal;
• a first conductivity type fifth MOS transistor with a source that is connected to a drain of the first conductivity type first MOS transistor, a gate that is connected to a second signal input terminal, and a drain that is connected to a second signal output terminal;
• a first active inductor that is connected between the drain of the first conductivity type fourth MOS transistor and the first electrical power source supply line;
• and
• a second active inductor that is connected between the drain of the first conductivity type fifth MOS transistor and the first electrical power source supply line;
• wherein the first active inductor includes:
• a second conductivity type sixth MOS transistor with a source that is connected to the first electrical power source supply line, a drain that is connected to the drain of the first conductivity type fourth MOS transistor, and a gate that is con nee ted to a drain of the first conductivity type second MOS transistor;
• a first capacitance between the gate of the second conductivity type sixth MOS transistor and the first electrical power source supply line;
• and
• a first diode element that is connected between the drain and the gate of the second conductivity type sixth MOS transistor, and
• wherein the second active inductor includes:
• a second conductivity type seventh MOS transistor with a source that is connected to the first electrical power source supply line, a drain that is connected to the drain of the first conductivity type fifth MOS transistor, and a gate that is connected to a drain of the first conductivity type third MOS transistor;
• a second capacitance between the gate of the second conductivity type seventh MOS transistor and the first electrical power source supply line;
• and
• a second diode element that is connected between the drain and the gate of the second conductivity type seventh MOS transistor.