Characterization of Gilbert cell mixer for ultrawide band applications and noise parameters

Abstract

Gilbert Mixer Cell is very popular active mixer that is used in most of the electronic applications. Various noise parameters related with the Gilbert mixer have significance importance to understand in a detailed study. Very less work in this area was carried out in the past with respect to various noise related issues. In this paper a detailed study on noise parameters in the Gilbert mixer cell are discussed and a simplified mixer cell is proposed which is suitable for ultra-wide (UWB) applications. The obtained noise figure is less when compared with previous works. The mixer circuit proposed in this paper delivered best suitable outputs for the low-voltage application in UWB frequency range.