Abstract
Multiplexers are microwave products designed to add signals received from several
microwave amplifiers in one output channel. There are no domestic analogues of these devices,
and foreign analogues are Multiplexer 4-1/C (C-band), and Multiplexer 3-1/X (X-band) from
«COM DEV International» (Canada). The basis of the design of the output multiplexers of onboard radio-electronic complexes of space communication systems is waveguide narrow-band
microwave filters of high power levels.