Comparison of Two Step and Six Step Impedance Matching Techniques using Quarter Wave Transformers

Abstract: The current paper seeks to evaluate the performance of the quarter-wave transformer-based impedance matching technique implemented by means of reduced-height waveguide structures with each section being a quarter- wavelength long electrically, with comparison between performances based on number of sections used for impedance matching. The two-step impedance matching technique has been compared to its six-step variant, by comparing the impedance variation from input to output section in both cases, to enable optimization of power transfer and reduction of standing-wave formation due to significant variation in impedance between two successive sections, which is significant in case of two-step impedance matching by two quarter-wave sections.

Keywords: Impedance Matching, Reduced-Height, Waveguide, Quarter-Wave Transformer, Impedance Variation.