Discussion of various RF filter technologies, and the progression of recent innovations delivering the newest levels in RF filter performance applicable for Satcom and Radar. Describing solutions spanning 240MHz MUOS UHF through L-band SatCom (Iridum and InMarSat) to Ku-Band and Ka-Band Satcom (Uplink and Downlink) with a fraction of the Size, Weight, and Cost for both Military and high-volume Commercial applications.