Low-noise hemt - amplifier with a large bandwidth and active input load

摘要

Low-noise broadband amplifier with:a first transistor with high electron mobility transistor (hemt) (q1), the first gate -, source - - and the drain terminals, in a source - circuit are configured;an active inductor - and capacitor-free impedance circuit (20) for providing an input impedance matching of the first hemt (q1),the active impedance circuit (20) a second hemt (q2), the second gate -, - source and drain terminals and in a gate - circuit is configured,wherein the second source - connection with the first gate - connection is coupled to and the second gate - terminal is grounded;an input terminal (24), which together with the first gate - connection of the first hemt (q1) is coupled; andan output terminal (34), which together with the first drain - connection of the hemt (q1) is coupled.