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Design and performance of 20 dB gain two-tier matrix distributed amplifier

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5 Author(s)
D'Agostino, S. ; Dept. of Electron., Rome Univ., Italy ; D'Inzeo, G. ; Grifoni, G. ; Marietti, P.
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A matrix distributed amplifier, having a gain of 20 dB with a noise figure of 5 dB in the frequency range between 0.5-12 GHz, is presented. The amplifier, realised in hybrid technology using commercially available GaAs HEMTs, incorporates a novel scheme which allows the biasing of a single stage of the two tier amplifier (two rows of active devices) with a unique controlling resistance and, at the same time, the cascading of the two FETs of each stage. The computed results obtained using a small signal model for each FET fit rather well with the measurements in the whole frequency range.

Published in:

Electronics Letters  (Volume:27 ,  Issue: 6 )