A CMOS LNA with Noise Cancellation for 3.1-10.6 GHz UWB Receivers Using Current-Reuse Configuration

For the matching devices fix the gain of the latter stage, elementary noise canceling LNAs suffer inferior global power gain. In contrast, this paper presents an ultra-wideband 3.1-10.6 GHz low noise amplifier, which can save more power, contribute lower noise figure and provide higher gain by using a noise-canceling technique, current reuse and a single on-chip transformer. The amplifier is implemented in 0.18- mum CMOS technology, and the IC prototype exhibits a small signal gain of 16.3 dB over a -3 dB bandwidth of 3.5-10.4 GHz, and a noise figure of 3.9-5.8 dB in the entire UWB band. The LNA consumes 12.9 mW from a 1.8 V power supply and only has 1.4 mm2 die area.