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In this paper, the S parameters of a single coupler are extracted from the whole slow-wave-structure (SWS) system. The basic theory is derived. The simulation model is built up based on the helix SWS in the code CST Microwave Studio. The whole S parameters of the system are simulated. The parameters of a single coupler are obtained from the whole parameters based on the derived theory. The results...
In this paper, the ridge-loaded helix slow-wavestructure (SWS) used in microwave power module (MPM) is presented. Based on the finite vane model, the loaded ridge and the support rod in ridge are equalized to the sector waveguides with regard to the helix tape thickness. The dispersion characteristic equation is newly derived. The calculation results meet the measurements very well.
In this paper, the coupler of the traveling-wave tube (TWT) is designed to be used in microwave power module (MPM). The stepped-impedance technology is employed to minimize the size. The length is decreased to about one half. The simulation results meet the measurements very well.
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