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It is submitted waveguide diplexer, designed for feed system of reflector-type antenna TN-1500 (OCB MPEI, the Medveji Ozera). Diplexer will consist from 2 waveguide bridges hybrid, 4 stop-band filters, hermetically fixing, waveguide bends in Е and Н planes. All elements of diplexers have been designed with application of a technique of topological synthesis. At designing the universal electrodynamic programs based on a method of impedance analogue of electromagnetic space were used. All elements of diplexers were made on milling machine tools with program management and have no elements of adjustment.

microwave tract; diplexer; waveguide filter; bridge hybrid; electromagnetic analysis programs; topology synthesis; commutation invariants