Patent ID: 7973621

Claim:
A HOM attenuated high frequency resonator, comprising: a cylindrical resonator cavity on the outer surface of which are arranged three circular tapered waveguides with two symmetrically arranged ridges each, a cut-off frequency of a waveguide base mode being kept constant over the length of the waveguides by varying the height of the ridges, and the waveguides being provided at an end of the waveguides having a smaller diameter with an impedance transformer each for a broadband adjustment of a coaxial line, wherein the waveguides with two symmetrically arranged ridges for adjusting an asymmetry relative to a center plane of the cylindrical resonator cavity are arranged offset on the outer surface of the resonator cavity, and the waveguides with the two symmetrically arranged ridges are structured for adjusting an angularity of the waveguides relative to an axis of the cylindrical resonator cavity and the ridges of the waveguides protrude into the cylindrical resonator cavity such that modes of higher order are optimally coupled.