Abstract:This paper presents recent progress on high frequency and wide bandwidth GaN high power amplifiers (PAs) that are usable for highdata-rate wireless communications and modern radar systems. The key devices and design techniques for PA are described in this paper. The results of the state-of-the art GaN PAs for microwave to millimeter-wave applications and design methodology for ultra-wideband GaN PAs are shown. In order to realize high output power density, InAlGaN/GaN HEMTs were employed. An output power densi… Show more
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