1 V UWB CG LNA at 3–8 GHz with bulk-bias method

The low-noise amplifier (LNA) is used for an ultra-wideband (UWB) application. The UWB common gate LNA is designed using standard 0.18 um CMOS technology. Because of the common gate configuration, broadband input matching is obtained and the noise does not increase rapidly at higher frequencies. Bulk bias is designed for low-voltage supply through the first stage of amplification. The LNA showed the maximum S21 of 19.5 dB. The minimum noise figure was 2.9 dB with 1 V supply voltage.