Design of Stripline Structure for Electromagnetic Characterization at Microwave Frequency

A comprehensive approach to the design of a stripline for EMC testing is given in this paper. The authors attention has been focused on the design items that are most crucial by the achievement of satisfactory value of the VSWR and impedance. The characteristic impedance of the stripline test section should be smoothly matched with the feed and terminations points in order to minimize the standing waves. Thereby, the most critical parameters that directly determine the physical design of the stripline are impedance matching at the feed port (S11 parameter) and transmission between two ports (S21 parameter). An analysis can be performed for the stripline conflguration using a vector network analyzer. A measurement of the re∞ection from transmission through a material along with knowledge of its physical dimensions provides the information to characterize electromagnetic waves at microwave frequencies range.