Modeling and optimization of a new-type bandstop filter based on multiaperture irises

The general properties of the single- and double-band rejection sections based on the multiaperture irises have been investigated. A bandstop iris with two rejection resonances has been numerically investigated and measured. New type of three-section bandstop filter with three-slot irises has been designed, optimized and tested. The calculated results for an X-band bandstop filter have been confirmed with good accuracy in experiment.