TRIPLY-RIDGED CIRCULAR WAVE-GUIDES

Ridged waveguide is a classic arrangement utilized in broadband microw ave components. An analysis of triply-ridged waveguide, presented here , indicates that the dominant mode consists of a degenerate pair. Dege nerate mode pairs are widely used in phase shift and control applicati ons. It also exhibits single mode bandwidth characteristics more favor able than the conventional quadrupally-ridged cross-section. Modal hie rarchy and field patterns are provided through the use of a finite ele ment solver. Experimental results obtained from a triply-ridged cavity are also discussed and compare well with the numerical calculations.