A band-stop filter in the form of a quasi-optical resonator with a corrugated mirror

We consider the possibility of developing a notch filter based on a resonant quasi-optical diplexer for providing combined operation of a high-sensitivity receiving system and a gyrotron in experiments on collective scattering at controlled-nuclear-fusion installations. The results of the model experiment in the 34-GHz band are presented for estimation of the rejection depth in the case of critical couplings in the diplexer.