A GaN Power Amplifier for Satellite Applications Using a Hermetically Sealed Broadband Quad-Ridge Waveguide-to-Coaxial Transition

With the rapid development of satellite microwave and millimeter-wave communication structure for the Ka band. The design optimizes the geometric parameters of the quad-ridge waveguide and the probe structure, achieving efficient energy transation technologies, waveguides, as efficient transmission structures, have become indispensable in high-frequency, high-power applications. Satellite systems impose stricter requirements on the hermeticity, reliability, and broadband adaptability of transmission components. To meet these demands, this paper designs and implements a hermetically sealed broadband quad-ridge waveguide-to-coaxial transition mission over a wide frequency range while ensuring excellent hermetic performance and mechanical strength.