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ABSTRACT: In this paper describe a very simple cavity structure which can be
used as the basic building block for the computer-aided design (CAD) of
triple-mode filters in rectangular waveguide. The input output ports are
standard rectangular waveguides with a common longitudinal axis. The
proposed configuration is geometrically simple and exhibits the very
important feature of being amenable to a rigorous electromagnetic
simulation. As an application example, a three-pole filter is
demonstrated thereby fully validating the configuration proposed
IEEE Microwave and Guided Wave Letters 11/1998;
