A 0.8V low-voltage low-power source-driven mixer in 0.18μm CMOS technology

A low-voltage and low-power mixer using 0.18 μm CMOS technology is presented in this paper. The proposed mixer uses a weak inversion biasing technique in a source-driven topology. For high conversion gain, current reuse technique is applied to the input buffers. Moreover, the bulk-biased technique is used to achieve low supply voltage. The source-driven mixer exhibits a conversion gain of 8.68 dB, single side-band noise figure of 9.01 dB, and the 1 dB compression point of -22.62 dBm, when the frequency of the radio frequency signal, the local oscillator signal and the intermediate frequency signal are 1.6 GHz, 1.4 GHz and 200 MHz. The mixer operates at 0.8 V supply and the power consumption of core circuit is 458 μW. The simulation results indicate that the down-conversion mixer can be widely used in the navigation receiver systems.