Abstract

This paper describes the design and manufacturing steps of two different Ka-band microstrip six stages low noise amplifier configurations, operating over the temperature range of -4O/=125 °C. The preliminary performances of these two components,in the Bandwidth of 400MHz centered at 35GHz, are: Noise Figure less than 3.8dB at 25 °C temperature with a 2.9 dB NF first stage and a dual temperature compensation network. Gain is in excess of 20dB and In/Out VSWR better than 1.5:1. Two different prototypes (i.e. waveguide WR28 and coaxial K-connector) are discussed.