High linearity CMOS SOI mixer

This paper describes the design of a single-ended CMOS SOI mixer with very high linearity. The mixer delivers +23dBm of IIP3 with a conversion loss of 6.5dB at an RF frequency of 1.9GHz, at an LO drive of 0dBm and a bias current of 6.3mA at 3V/sub DC/. The mixer is fabricated in a 0.5 /spl mu/m CMOS SOI process and operates over a frequency range of 900MHz to 2.4GHz drawing 6-8mA of supply current (dependant on LO drive) at a DC supply of only 3V. The chip size is 466 /spl mu/m /spl times/ 606 /spl mu/m and is housed in a six lead SOT-23 package.