Novel Lowpass Harmonic Filters for Satellite Application

A new class of Iowloss spurious-free lowpass filters in ridged waveguide have been developed for space application. These filters are currently being incorporated for INTELSAT VI at 4 GHz and SATCOM K satellites at 12 GHz and will likely replace the present generation of Zolotarev stepped-impedance or waffle-iron filter networks for future spacecraft.