Abstract: A frequency converter circuit and method is disclosed. The circuit may comprise: two pairs of differential amplifying transistors; two current mirrors, wherein each of the two current mirrors is operable to feed a respective one of the two pairs of differential amplifying transistors; a further pair of differential amplifying transistors, wherein each transistor of the further pair of differential amplifying transistors is operable to feed a repective one of the two current mirrors; and a pair of bypass transistors connected in parallel with a controlling side of the two current mirrors, wherein the bypass transistors reduce a direct current component of a current being mirrored.