Understanding Microstrip Filter Topologies

The behavior of transmission lines in RF systems becomes important when the transmitted frequency’s wavelength is short enough that the length of cable becomes a significant part of a wavelength. Microstrip refers to a type of planar transmission line technology that consists of a conducting strip separated from a ground plane by a dielectric substrate. Entire devices are formed from metallized patterns on the substrate, making Microstrip lighter, more compact and more affordable than alternative transmission line technologies such as waveguide. Download this white paper for an introduction to standard Microstrip filter topology approaches for manufacturing bandpass filters.