Triple-mode asymmetric filters in a rectangular waveguide

Abstract

This paper describes cavity structure which can be used to implement triple-mode filters in a rectangular waveguide with asymmetric transmission zeros. The structure described is very simple to manufacture, and is therefore particularly suitable for diplexer applications in the Ka-band and above. As an application example, a three-pole filter is demonstrated, thereby fully validating the proposed triple-mode configuration. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 28: 228–231, 2001.