Provided is a gain boosting mixer. The gain boosting mixer includes: a coupler providing a sum signal by combining an RF signal and a local oscillator (LO) signal; a converter providing a phase conversion signal by converting the phase of the sum signal; and a mixer core transistor providing an IF signal by mixing the phase conversion signal. [Reference numerals] (110) Coupler; (120) Phase converter; (130) Mixer core transistor
