This paper presents the design and realization of a downconversion mixer fabricated in a standard 130nm commercial CMOS process and aimed at applications in the 60 GHz ISM band. A balanced mixer configuration was implemented using a layout efficient 90° hybrid coupler which serves as a diplexer to inject the LO signal while also providing two outputs with 3dB of attenuation and 90° phase shift. The mixer achieves a conversion gain of +0.3 dB and an OIP3 of +2.3 dBm. The mixer also consumes 200μA of DC current and 8mA of peak current while driven from a single 2V supply. The layout area, including test pads, is 1.4mm × 1.0mm.
2009 IEEE Custom Integrated Circuits Conference, CICC '09

Amaya, R, & Verver, C.J. (Cornelius J.). (2009). A 60 GHz CMOS balanced downconversion mixer with a layout efficient 90° hybrid coupler. In Proceedings of the Custom Integrated Circuits Conference (pp. 235–238). doi:10.1109/CICC.2009.5280847