Title :
Novel 8-port polarimetric waveguide junction for characterisation of synthetic chiral media
Author :
Arnaut, L.R. ; Davis, L.E.
Author_Institution :
Department of Electrical Engineering and Electronics, The University of Manchester, Institute of Science and Technology, PO Box 88, Manchester M60 IQD, UK
Abstract :
Closed-waveguide measurements are reported on synthetic microwave chiral media at X-band frequencies using a novel 8-port polarimetric waveguide junction. The scattering matrix of the junction is derived using a chain matrix algorithm for doubly connected multi-port junctions. For the first time, the effects of variations in helix material, dimensions, orientation, concentration, host material and sample thickness have been dssessed experimentally. Medium parameters are determined from the mesured wave reflection, absorption, transmission and depolarisation using a numerical inversion algorithm.
Keywords :
Electric variables measurement; Electromagnetic measurements; Electromagnetic waveguides; Mechanical variables measurement; Microwave technology; Rectangular waveguides; Reflection; Scattering; Transmission line matrix methods; Waveguide junctions;
Conference_Titel :
Microwave Conference, 1995. 25th European
Conference_Location :
Bologna, Italy
DOI :
10.1109/EUMA.1995.336978
