A Q-band CMOS LNA with noise cancellation

In this paper, a Q-band CMOS low noise amplifier (LNA) exploiting transformer positive-negative feedback and noise cancelling is presented. The proposed low noise amplifier consists of a positive transformer feedback to achieve noise-reduction and a negative transformer feedback to obtain good reverse isolation and stability. The noise cancellation technique is applied in this LNA to achieve a low noise figure. This LNA has been fabricated by standard commercial 90 nm technology. Based on measurements, this proposed LNA achieve a voltage gain of 11.5 dB, a noise figure of 6.5 dB and an input P1dB of -18 dBm. It consumes 11.5 mA from a 1.2 V supply and the total area of this design is 0.6*0.7 mm
²
.