R. Simons, J. Downey, Bryan L. Schoenholz, M. Piasecki, N. Pham, M. Siddiqui, Ralph G. Bonnin
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Demonstration of a Switched Wideband GaN High-Power Amplifier for Future Space Missions
In this paper, we present the architecture of a Kaband switched, wideband, high efficiency gallium nitride based high-power amplifier. The architecture is validated by characterizing the driver and power amplifier chain. The measured results include Pout, Gain, PAE, RMS EVM for QPSK, Offset-QPSK, 8PSK, 16APSK, and 16QAM constellations, 3rd order IMD products, noise figure, and added phase noise. The wide bandwidth and high output power of the amplifier will enable future user terminals to interoperate between multiple service provider’s space networks.
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