Two kinds of high-power waveguide phase shifters targeting the application of phased arrays are proposed in this paper. To enhance the power handling capacity, both linear phase shifters are designed to be mechanically tunable without the introduction of a dielectric and a semiconductor. For the waveguide-inserting-fin phase shifter, the phase shifting function is achieved by adjusting the length of the inserting metal fin. As for the narrow-side slot-waveguide phase shifter, the regulation of the position of the metal choke plunger placed at the end of the 3-dB power divider is used to adjust the output phase. The simulation results show that both phase shifters can realize 2π phase shift, and the transmission efficiencies are over 99% at the central frequency of 9.5 GHz. Meantime, the power handling capacity of the designed shifters is expected to be over 100 MW, which can be applied in the high-power microwave region. The slot-waveguide phase shifter is fabricated and tested along with the slotted array antenna. The experimental results coincide well with the simulations, which demonstrates the feasibility and the power capacity of the designed shifter.

中文翻译：

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用于相控阵应用的高功率波导移相器

本文提出了两种针对相控阵应用的大功率波导移相器。为了提高功率处理能力，两个线性移相器都设计为机械可调，无需引入电介质和半导体。对于波导插入鳍式移相器，通过调整插入金属鳍片的长度来实现移相功能。对于窄边狭缝波导移相器，通过放置在3dB功分器末端的金属扼流柱塞位置的调节来调节输出相位。仿真结果表明，两种移相器均能实现2π相移，在9.5GHz中心频率下传输效率均在99%以上。与此同时，设计的移位器的功率处理能力有望超过100 MW，可应用于高功率微波领域。缝隙波导移相器与缝隙阵列天线一起制作和测试。实验结果与仿真结果吻合良好，证明了所设计换挡器的可行性和功率容量。