Gilbert cell Mixer design in 65nm CMOS technology

The article reports the design of Gilbert cell mixer using 65 CMOS technology. Cadence software is used to process the circuit design. The proposed down-conversion mixer uses a double balanced Gilbert cell to provide the required performance in gain conversion and isolation among ports. The supply voltage of 1.8V uses a new degenerating structure to improve linearity. The resonant frequency is around 1.9 GHz. The target in this work is minimizing size as well the power consumption (2.17mW). Acceptable linearity with 1dB compression point is -2.54 dBm. The third intercept point (IIP3) is optimized to 6 dBm. The conversion gains of LNA and Mixer is 10 dB when one IF port is terminated to 50Ω. The noise figure obtained at the output is 22dB.