Background Microwave filters are used in a wide range of applications and forms including lumped element filters, planar distributed filters, and quasi-optical filters. Most optical filters for laboratory use or use in cameras are made from multiple coatings of different dielectric materials where the difference in the index of refraction of the materials...

Earth has seen a dramatic discrepancy in climate patterns in recent years, driving professionals to use climate and weather satellites to collect information for future predictions and analysis. Microwave sounding instruments in weather and climate satellites have been the primary source of measuring atmosphere traits, surface and/or cloud temperatures...