Title :
Tunable polarisation transformers for axially corrugated waveguides
Author :
Viitanen, Ari ; Uusitupa, Tero
Author_Institution :
Electromagnetics Laboratory, Department of Electrical and Communications Engineering, Helsinki University of Technology, P.O. 3000, FIN-02015 HUT, Finland. email: ari.viitanen@hut.fi
Abstract :
Tunable polarisation transformers for axially corrugated waveguides are proposed. The polarisation transformer consists of a uniaxially anisotropic waveguide section and a ferrite filled waveguide section. The polarisation of the field is changed when propagating through the anisotropic waveguide section. The state of the polarisation depends on the ratio of the axial field components which can be changed by external magnetic field in ferrite filled waveguide section.
Keywords :
Anisotropic magnetoresistance; Electromagnetic wave polarization; Electromagnetic waveguides; Ferrites; Gyrotropism; Magnetic fields; Maxwell equations; Transformers; Waveguide components; Waveguide transitions;
Conference_Titel :
Microwave Conference, 2002. 32nd European
Conference_Location :
Milan, Italy
DOI :
10.1109/EUMA.2002.339362
