Low Voltage Low Noise Figure Down-Conversion Mixer for Band 1 of WiMedia System

摘要

A Low voltage and low noise figure double-balanced down-conversion mixer is proposed and implemented using ADS software in a 0.18μm CMOS process technology, at 1V DC supply voltage. The proposed mixer use DTMOS (Dynamic Threshold Voltage MOSFET) configuration at RF and LO stages for low voltage operation. LC ladder circuit is used for matching at RF port. Current injection technique is used to enhance the conversion gain. The proposed mixer is designed for a RF frequency of 3.432 GHz with an IF frequency of 264 MHz. Simulation of mixer shows maximum conversion gain of 9.212 dB, P1dB of -17.2 dBm, IIP3 of -4.828 dBm, S₁₁of -29.404 dB and a SSB noise figure of 6.720 dB.