This paper presents a Ka band two-stage differential LNA in standard CMOS technology. Neutralized bootstrapped cascode amplifier (NBCA) is implemented to improve the gain and noise performance of the LNA while maintaining the stability. By using 1:3 transformer and larger common gate transistor in the output buffer, the output matching is improved. The effects of neutralization and bootstrapped capacitor on the noise figure, gain and stability are further analyzed. Measurements show that the whole circuit offers a 25 dB peak gain and 4.1 dB NF at 34.5 GHz, with better than 10 dB return losses at the frequency band of interest (33.5 GHz-36 GHz).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.