Compact waveguide filter and method

In a multiple VSWR waveguide element filter for passing electromagnetic energy of predetermined frequencies, the improvement wherein one of said multiple VSWR elements is replaced with a media transition.

In an electromagnetic energy waveguide filter having a plurality of serially disposed VSWR waveguide elements, a method of reducing the axial length of the filter comprising the step of replacing at least one of said plurality of VSWR waveguide elements with a waveguide bend.

In an electromagnetic energy waveguide filter having a plurality of serially disposed VSWR waveguide elements, a method of reducing the axial length of the filter comprising the step of replacing at least one of said plurality of VSWR waveguide elements with a media transition.

A method of filtering electromagnetic energy comprising the steps of selectively introducing a plurality of impedance mismatches into a waveguide.

In a multiple VSWR waveguide element filter that includes one media transition, the improvement wherein said media transition is used as one of said multiple VSWR elements.

In a multiple VSWR waveguide element filter that includes one waveguide bend, the improvement wherein said bend is used as one of said multiple VSWR filter elements.

In a waveguide filter having at least five VSWR elements, the improvement wherein the elements are configured to provide a filter length of less than about one inch, for frequencies less than 40 GHz.