Provided is a
frequency conversion mixer. The
frequency conversion mixer includes a
transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The
transconductance stage receives an RF
signal, and outputs a current corresponding to a
voltage of the RF
signal. The switching stage switches the current which is outputted from the
transconductance stage in response to a local oscillation
signal, for
frequency conversion the RF signal into an
intermediate frequency (IF) signal. The load stage is connected between the switching stage and a supply
voltage terminal. The current bleeding circuit is connected parallel with the switching stage, especially, embodying
inverter structure with transconductance stage to get not only current bleeding effect but also current reuse effect, and one resonant
inductor for reducing
noise which is generated in
parasitic capacitance at node between transconductance stage and switching stage. The bias stage is connected between the transconductance stage and a ground terminal, and has the switched biasing technique for allowing not only the stable bias current but also lowering the
flicker noise.