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In order to obtain the parameters of dispersion and interaction impedance of helix slow-wave structure (SWS), an automatic system was established. A non-resonant perturbation model was employed in the system. The helix SWS under measurement is 1:1 model of practical helix SWS. The hardware of the system is mainly composed of Vector Network Analyzer (VNA), personal computer (PC), moving platform, controller and optical monitor. The special program was developed to control the measure progress and manage the data. The experimental results were in good agreement with the results calculated using Microwave Studio.
Date of Conference: 28-30 April 2009