In this article, a novel and efficient ultra-wideband power-combining method over K (18–26 GHz) and Ka (26–40 GHz) band is presented. Ridge waveguide power combiners and contactless transition between ridge waveguide and double microstrip lines will be used in this method. By using this method, a 16-way power combiner system is designed to work in the bandwidth of 18–40 GHz through 3-D electromagnetic field simulation and optimization. A back-to-back configuration of this combiner system is manufactured. The measured power-combining efficiency is higher than 78% within the designed frequency. By using 16 GaAs monolithic-microwave integrated-circuit (MMIC) medium power amplifiers, the active combiner system produces up to a maximum power output of 3.9 W with a power variation of ±1.3 dB within the bandwidth of 18–40 GHz. The measured power added efficiency (PAE) within the operating bandwidth is up to 16%.

中文翻译：

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一种用于毫米波的脊波导中的超宽带功率组合

在本文中，介绍了一种在 K (18-26 GHz) 和 Ka (26-40 GHz) 频段上的新颖高效的超宽带功率组合方法。该方法将使用脊形波导功率合成器和脊形波导与双微带线之间的非接触式过渡。使用这种方法，通过3-D电磁场仿真和优化，设计了一个16路功率合路器系统，工作在18-40 GHz的带宽。制造了该组合器系统的背靠背配置。测得的功率合成效率在设计频率内高于78%。通过使用 16 个 GaAs 单片微波集成电路 (MMIC) 中功率放大器，有源组合器系统可在 18-40 GHz 带宽内产生高达 3.9 W 的最大功率输出，功率变化为 ±1.3 dB。