Two-input/two-output broadband active selector switch with distributed structure, and phase control device comprising such a switch

摘要

An active selector switch with two inputs and two outputs comprises two parts, each part comprising a distributed amplifier whose elementary cells comprise at least two cascode-mounted transistors (Q₁ Q₂, Q′₁ Q′₂), one transistor (Q₃, Q′₃) controlled through the gate line (Lgc1) of the amplifier being associated with each cell, the associated transistor (Q₃) of the first part controlling the state of the common-gate transistor (Q′₁) of the second part and the associated transistor (Q′₃) of the second part controlling the state of the common-gate transistor (Q₁) of the first part, the two inputs (E₁, E₂) of the selector switch being the free ends of the gate lines (Ldc1) of the two distributed amplifiers (41, 42) and the outputs (S₁, S₂) of the selector switch being the free ends of these two amplifiers. The invention can be applied especially to digitally controlled phase control devices.