Abstract
A two-stage 12GHz LNA has been realised as a lumped element MMIC on GaAs substrates using Ino0.25Ga0.75As channel PM-MODFETs. The gain is >17dB and noise figure is <1.25dB. Input (output) match is better than −21 dB (−14 qB). The MMIC design includes reactive feedback by source inductances and makes use of optimised gate widths for broad noise circles and easy impedance match.
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