Low-voltage low-power double bulk mixer for direct conversion receiver in 65nm CMOS

Abstract

An innovative design with simulation results of a low-voltage bulk driven mixer for direct conversion receiver is presented. The circuit is designed in a 65nm digital CMOS process without analog extensions. It offers a conversion gain of 22dB at a clock frequency of 1.5GHz for GALILEO/GPS applications. The design is capable of operating at up to 7GHz with only 3dB gain decrease. The simulated noise figure is 27dB with a power consumption of 730µW. Simulations at a supply voltage of 0.9V instead of 1.2V show a gain decrease of only 3dB while the noise figure increases by 2dB.