Masud, Anowar ; Ferndahl, M. ; Zirath, Herbert
(2003)
A Variable gain MMIC amplifier.
In: Gallium Arsenide applications symposium. GAAS 2003, 6-10 October 2003, Munich.
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Abstract
A variable gain MMIC amplifier block is demonstrated.A maximum gain of 13 dB with a control range of 13 dB is obtained at 2.5GHz.The –3dB bandwidth is 5 GHz.The circuit consists of a cascade input stage with an active load followed by a source follower for impedance transformation.A GaAs pseudomorphic HEMT technology is used for the implementation.The active circuit area is less then 0.5 mm 2.
Abstract