An impedance converter circuit achieves negative capacitance and/or negative inductance for radio frequency (RF) front end impedance matching for low noise amplifier (LNA) designs. The impedance converter circuit includes a first transistor coupled to a first RF input at a source of the first transistor. The impedance converter circuit also includes a second transistor coupled to a second RF input at a source of the second transistor. The second transistor is cross-coupled to the first transistor to form a cross-coupled pair of transistors. The cross-coupled pair of transistors is configured to generate a negative capacitance or a negative inductance based on a load impedance coupled to a drain of the first transistor and a drain of the second transistor.