A low noise fully differential 60 GHz CMOS active down converter with resonating current bleeding

Abstract

This paper presents optimization process, simulations and measurement results of a fully differential 60 GHz active down converter with resonating current bleeding in a 90 nm CMOS process. The circuit is thought to be used within a superheterodyne receiver with intermediate frequency at around 20 GHz, covering the four channels of the IEEE802.15.3c standard. Thanks to the careful optimization of the resonating current bleeding network, the quad introduced noise is minimized keeping the conversion gain and the required local oscillator power at reasonable values.

A 76–81 GHz CMOS mmW quadrature down-conversion mixer for automotive radar applications

“…Besides, the mixer should provide some gain to suppress noise contributions from successive building blocks, such as basedband amplifiers and ADC. How to realize a high linearity, high gain and low noise mmW mixer has become a research hotspot [15,16,17,18,19,20,21,22,23,24,25].…”