L-band AlGaN/GaN Power Amplifier with Protection Against Load Mismatch
conference paper
Solid-state power amplifiers need protection at the output to handle high reflections due to mismatch. Normally this is implemented by using a ferrite-based isolator. These are however large and bulky components. This paper presents a Gallium-Nitride power amplifier module with automatic protection against large reflections based on fold-back protection, by sensing the reflected power. Measurements have been performed on a 100 W L-band power amplifier module at full reflection (short at the output) without damage to the amplifier. The reaction time of the protection mechanism is less than 0.5 μs.
TNO Identifier
489326
Publisher
EuMA
Source title
European Microwave Week EuMW 2013, Proceedings of the 43rd European Microwave Conference, EuMC 2013, 7 - 10 October 2013, Nuremberg, Germany
Place of publication
Louvain-la-Neuve
Pages
1379-1382