Using Via Stubs in Periodic Structures for Microwave Filter Design

This paper presents a novel form of microwave filter construction using vias (plated through holes) available in generic printed circuit boards as the main building block. It is demonstrated that for a certain arrangement of vias, the resonant behavior of via stubs can be used to create a low- or a high-pass filter using open- or short-circuited vias, respectively. These stubs are periodically cas...