The Generalized Reflect-Thru-Line (GTRL) calibration technique is used for the measurement of a waveguide devices operating in a multioctave band region, where waveguides are multimodal. In this contribution some preliminary results are shown concerning measurements up to the third harmonic of a WR75 reduced height rectangular waveguide, where up to four modes are above cutoff.
Generalized Thru-Reflect-Line Calibration for the Measurement of Waveguide Devices up to the Third Harmonic: First Results / Morini, A.; Farina, M.; Guglielmi, M.; Iglesias, P. M.; Angeletti, P.. - (2022), pp. 9-12. (Intervento presentato al convegno 2022 52nd European Microwave Conference tenutosi a Milan, Italy nel September 26-29).