Tiago Moura, W. Jang, P. Cruz, D. Belo, N. Carvalho, S. Chevtchenko, B. Janke, J. Wurfl
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MMIC GaN power amplifier with bidirectional operation for RF-to-DC conversion
GaN technology has shown improved characteristics at high power and high frequency conditions, playing a key opportunity in the space industry. In this way, this paper presents a GaN-based MMIC power amplifier (PA), designed for X-band space applications. The PA design consists of a single stage class-B and achieves 10.5 dB gain at 9 GHz and an output power of 32 dBm. It is verified that the MMIC can operate also as a rectifier, with a conversion efficiency of around 40 % for a CW input signal of 28 dBm at 8 GHz. Additionally, two-tone measurements are performed and compared to the CW ones.
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