Gilbert multiplier as an active mixer with conversion gain bandwidth of up to 17 GHz

A monolithically integrated mixer based on a Gilbert cell multiplier for ultra-broadband applications has been produced in self-aligning 1 μm silicon bipolar technology. Positive power conversion gain bandwidths for RF and LO up to 17.3 GHz and for the intermediate frequency (IF) up to 13 GHz were measured. The corresponding −3dB frequencies are 9 GHz for RF and LO (IF = 100 MHz) and 8 GHz(fLO = 1 GHz) for IF.