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A set of passive and active devices based on dielectric, ferrites and semiconductors for the frequency ranges 26–48, 80–120, and 115–145 GHz have been created and investigated. These devices use dielectric strip waveguides, image waveguides, nonradiative waveguides of rectangular cross-section and provide optical or magnetic control of attenuation, phase and polarization. The advantages of the reported devices are as follows: broad band, simple construction, small dimensions, low weight and price cost. Receiving, transmitting and measuring systems using above mentioned devices were realized.