Set of high-quality corrugated resonators for measurements at millimeter-wave band

A general-purpose set of six high-quality resonators for the band 32/spl divide/405 GHz has been designed. The resonators described are cylindrical cavities with corrugated side surfaces. The loaded Q-factor of (0.6/spl divide/1.0)/spl times/10/sup 5/ at SWR/spl les/2.0 has been achieved. The resonators can be used for measurements of signal fluctuations, constitutive parameters of substances, etc.<>