Circuit arrangement for a wideband mixer with predistortion and high linearity and methods for broadband mixing

Circuit arrangement for a wideband mixer (1, 101, 201) with a multiplicative mixer stage (2) having a carrier input (3, 4) for coupling a differential carrier frequency signal (LOP, LON), a mixing stage input (5, 6) for coupling a predistorted differential input signal (LFPD, LFND) and an output (9, 10) for coupling out a differential output signal (OUTP, OUTN), which is generated by multiplicative mixing of the differential carrier frequency signal (LOP, LON) and the predistorted differential input signal (LFPD, LFND) is, characterized in that the predistorted differential input signal (LFPD, LFND) is generated from a differential input signal (LFP, LFN) by a quadratic predistortion and a linear pre-distortion.