Ku-band solid state power amplifier for Geosat follow-on

A Compact, Wideband, Phase-Equalized Waveguide Divider/Combiner for Power Amplification

“…This is usually obtained in two ways: i) considering a quasi-optical system that combines the power of many devices fed by an incident wave [1], [2], [3]; ii) considering waveguide components to divide the input signal, perform the amplification by using few devices (usually no more than 8) and recombine the amplified signals at the output port (see Fig. 1) [4], [5], [6].…”