Engineering Design Method of Energy Coupler and Impedance Transformer for Millimeter Wave Tubes |
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Authors: | Shunkang Liu |
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Institution: | (1) Department of Electronic Engineering, Southeast University, Nanjing, 210096, People's Republic of China |
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Abstract: | The engineering design method of heliz-waveguide and rectangular coupled cavitiy-waveguide energy coupler employed in millimeter wave tubes is described. Experiments show that, the former has broadband matching character )VSWR is less than 2 at 26 - 40GHz). And the later has small reflection (VSWR is less than 1.5 at 34-37.5 GHz). Optimum design method of multi-section and linear taper waveguide impedance transformer is also given in this paper. These impedance transformers can operate at wide frequency range in microwave and millimeter wave band. The design method and examples of couplers and impedance transformers can be referred for tube designers. |
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