MICROWAVE SWITCHING STRUCTURE HAVING A DISTRIBUTED AMPLIFIER WITH AN INPUT FOR FEEDING A TEST SIGNAL THEREIN

摘要

The invention relates to a electronic microwave switching structure comprising at least one input (E1, E2) for a useful signal, one input (T) for a test signal, and at least one output (S1, S2) for a microwave signal. The structure comprises n distributed amplifiers (Amp1, Amp2,...Amp1,...Ampn), each of which comprises amplifier cells (Cs11, Cs21,...Cs1k,...Cs1p) distributed between an input line (Le1, Le2, Le2c) and an output line (Ls1, Ls2), the microwave signal input terminals (1, 11) of at least one of the input lines of a distributed amplifier being the useful signal input (E1, E2), the microwave signal input terminal of another of the lines being the test signal input (T), the microwave signal output terminal of at least one of the output lines (Ls1, Ls2) being the microwave signal output (S1, S2), each of the amplifier cells (Cs11, Cs12,...Cs1k,...Cs1p) comprising a control input for placing said amplifier cells of one amplifier either in an amplifier state or in a blocked state separately from another amplifier, in order to carry out a transmission, at the microwave signal output (S1, S2), either of the amplified useful signal (Ue, Ue1, Ue2), or of the test signal (St). The invention can be used for multifunctional circuits used in systems for receiving and/or transmitting microwaves operating in a wide frequency band.