Abstract
A high-power <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">L</i> -band combline diplexer to be used in a National Aeronautics and Space Administration/Jet Propulsion Laboratory space mission has been designed and tested for multipaction. The radar path was required to have peak power handling of 450 W with 24.25-W average. The radar filter was partially filled with low-loss dielectric material to protect it against multipaction. The device was tested with input power up to 1800-W peak with no evidence of multipaction while having excellent RF peformance, including less than 0.20-dB insertion loss over temperature.
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