High-power terahertz pulse sensor with overmoded structure * Wang Xue-Feng(王雪锋) a)b) , Wang Jian-Guo(王建国) a)c) † , Wang Guang-Qiang(王光强) a)b) , Li Shuang(李 爽) a)b) , and Xiong Zheng-Feng(熊正锋) a)b) a)

An ultra compact 4-way high-power microwave (HPM) waveguide combiner to realize coherent microwave combination was theoretically designed and proof-of-principle experimentally tested. The theoretical and experimental S-parameters are basically consistent with each other, and the multi-channels of HPM combiner are effectively isolated with each other to avoid the inter-modulating among the HPM sources. The C-band HPM experiment was carried out, and the power capacity of the HPM combiner was demonstrated to reach multi-gigawatts.

A compact 2-way high-power microwave (HPM) waveguide combiner as an important equipment to realize the coherent microwave combination was theoretically designed, built, and proof-of-principle experimentally tested. The theoretical and experimental S-parameters are basically consistent with each other: return loss <-25 dB, and the isolation degree between 2-channels of the HPM combiner >25 dB to avoid the inter-modulating between the HPM sources. The C-band HPM experiment was carried out, and the power capacity of the HPM combiner was demonstrated to reach multi-gigawatts.