Quasi-optical components for microwave control and remote sensing

The microwave vacuum electronics is regarded to make sense only if producing sufficiently high powers at sufficiently high frequencies. And if intense microwave flows are produced, they may be transmitted only with oversized waveguides or mirror lines, such configurations being equipped with relevant miltiplexers, filters, duplexers and other components of quasi-optical types. Quasi-optical components applicable to control high power microwave flows are of interest also for electron-positron colliders, space communication and radar. In particular, arrivals of meteorites and asteroids stimulate the optics-microwave cooperation for tracking space debris; an expansion of the international multi-static interferometric network to the millimeter wave band is being discussed.