Optimal Design and Experimental Investigation of a Compact Ka-Band Mode Converter System
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A novel synthesis method is used to design the 32-GHz high-power microwave (HPM) mode converter system in this paper. The mode converter system includes a TE01 right-angle bend transition, a TE01 mode taper, and a TE01–TE11 mode converter. The new synthesis method provides more compact structure dimensions and higher mode conversion efficiency. The transmission efficiencies for three parts above are 99.21%, 99.87%, and 99%, respectively. Last, the mode converter system is fabricated, assembled, and tested on gyrotron experimental platform. The test results indicate the validity and the accuracy of the novel synthesis method.
KeywordsMode converter system Synthesis method Ka-band Experimental test
This work was supported in part by the Fundamental Research Funds for the Central Universities under Grant No. ZYGX2018J032, in part by the National Natural Science Foundation of China (Grant No. 61571078 and No. 61801088) and in part by the National Key R&D Program of China, contract numbers 2017YFE0300200 and 2017YFE0300201.
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