James Rautio, Sonnet Software, Syracuse, NY, John Reynolds and Allen F. Horn III, Rogers Corp., Rogers, CT

In the late 1970s, when one of the authors (Rautio) first got started in microwaves, one of his first tasks was to design filters on alumina for Landsat IV. The design was carefully performed using the commonly assumed substrate dielectric constant of 9.8. Even so, several design iterations were...