Development of alternative concepts of fast switches and combiners (FADIS-BC) for high-power millimeter-wave beams

New devices and concepts for fast switching and combination of millimeter-wave beams at high power are being developed. From the first prototype measurements up to highpower running tests, their properties and limitations are increasingly known. The development of new concepts for use in fusion experiments is continuous: the status of research, with focus on new achievements on the theoretical modeling of resonating diplexers with dielectric beam splitters is reported.