文摘
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 high 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 CMOS. According to measurements, this proposed LNA achieves a peak gain of 11.5 dB, a noise figure of 6.5 dB and an input P1dB of ?2 dBm. It consumes 11.5 mA from a 1.2 V supply occupying the area of 0.6×0.7 mm2.