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提出一种基于WR-140波导功分/合成器与波导-微带双探针过渡相结合的高效空间功率合成方案,并采用GaAsMMIC为推动放大级,MFET为末级功率放大器的两级放大结构,在15.7～16.2GHz频率范围内合成了饱和最大44W连续波功率。接着,采用一种具有渐变匹配结构的宽带波导功分/合成器将两个上述功放模块合成,在15.7～16.2GHz频率范围内实现了饱和最大82W连续波功率输出,合成效率最高达85%,附加效率高于14.5%,在Ku频段实现了高效合成与大功率连续波输出。
A highly efficient space power synthesis scheme based on WR-140 waveguide splitter / combiner and waveguide-microstrip double-probe transition is proposed. GaAsMMIC is a two-stage amplifying structure that drives the amplifier stage and the MFET stage as the final stage power amplifier , In the frequency range of 15.7 ~ 16.2GHz synthesized a maximum of 44W continuous wave power saturation. Then, a wide-band waveguide power splitter / synthesizer with a gradual matching structure is used to synthesize two above-mentioned power amplifier modules and achieve a maximum output power of 82W in a frequency range of 15.7 to 16.2GHz with a combined efficiency of up to 85% Additional efficiency of more than 14.5%, in the Ku band to achieve efficient synthesis and high-power continuous wave output.