Skip to Main Content
A three stage single-ended LNA using transformer (TF) matching and gain-boosting by capacitive feedback for wideband operation in the 57-66GHz band is presented. The LNA, fabricated in a 65nm standard CMOS process, achieves a 23dB-gain 4dB NF at 6mA and 1.25V supply, with 2dBm Psat and 0.05mm2 in size, demonstrating best reported noise figure, gain, power consumption and chip area compared to published 60 GHz LNAs. Different neutralization topologies were analyzed and compared based on analytical TF models that were created. Optimal gain-boosting is achieved by capacitive feedback after a 180-deg TF together with special decoupling capacitors of MOM and MOS stacked types.
Date of Conference: 17-19 June 2012