A Technique for the Measurement of the Generalized Scattering Matrix of Overmoded Waveguide Devices

Author

Morini, A. ; Guglielmi, M. ; Farina, Marcello

Author_Institution

Dipt. di Ing. dell´Inf., Univ. Politec. delle Marche, Ancona, Italy

Volume

61

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

2705

Lastpage

2714

Abstract

A technique is described to measure the generalized scattering matrix (GSM) of a waveguide device whose ports are multimodal. The device-under-test is placed in between suitable converters, thereby transforming multimodal ports into monomodal ports. The needed data are then measured using a standard vector network analyzer. A dedicated algorithm is finally used to recover the multimode GSM of the device. The experimental validation is reported in this paper for rectangular and square waveguides showing excellent agreement between theory and measured results.

Keywords

S-matrix theory; convertors; network analysers; rectangular waveguides; GSM; converters; device-under-test; generalized scattering matrix measurement; monomodal ports; multimodal ports; overmoded waveguide devices; rectangular waveguides; square waveguides; standard vector network analyzer; Calibration; generalized scattering matrix (GSM); multimode measurement; network analyzer; waveguides;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2013.2265683

Filename

6541999