Amplifier with adjustable gain, usable in the microwave frequency range

摘要

Amplifier with adjustable gain usable in the microwave frequency range (from 10 Megahertz to about one Gigahertz for example). It includes at least one MMIC module 5 whose terminal 4 is connected to earth by a choke coil 13 and whose terminal 2 is connected, from the AC viewpoint only, to earth, via a variable impedance (PIN diode 16) whose value is adjusted from the outside (control voltage V). <IMAGE>