A single-bias monolithic pulse amplifier realised in standard 0.5um GaAs MESFET technology is presented. The amplifier features broadband operation from quasi-DC to 5.5 Ghz. Measured performances of the stage include 55 ps rise time, together with a variable gain ranging from 18 to 5 dB depending on the imposed bias. Input-output match is better than 12 dB on the entire bandwidth.
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