A Bias-Controlled Noise-Canceling CMOS Tuned Low Noise Amplifier for UWB Transceivers

This paper describes a noise canceling tuned CMOS LNA using the TSMC 0.18 mum 3M2P CMOS process technology for 3.1 GHz - 10.6 GHz ultra wide band (UWB) RF receiver system. Bias-controlled noise canceling technique is used to improve the noise figure of a common-gate RF amplifier, which is ultra-wide-band tuned by a matched 3rd order band-pass butterworth LC filter section. The amplifier had a -3 db bandwidth(between the corner frequencies) of around 6.3 GHz with a power gain (S21) of ap 11 dB consuming around 55 mW. Also, the amplifier had a noise figure(NF) under 5 dB within the UWB pass-band utilizing the bias- controlled noise canceling technique. It had an IIP3 of -2.4 dBm and a 1 dB compression point of -13dBm at 5GHz. In addition S-parameter simulations indicated a reverse isolation of -100 dB (from the S12 plot).