Title :
Chiral-field microwave antennas Chiral microwave near fields for far-field radiation
Author :
Kamenetskii, E.O. ; Berezin, M. ; Shavit, R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel
Abstract :
In a single-element structure we obtain a radiation pattern with a squint due to chiral microwave near fields originated from a magnetostatic-mode ferrite disk. At the magnetostatic resonances, one has strong subwavelength localization of energy of microwave radiation. Magnetostatic oscillations in a thin ferrite disk are characterized by unique topological properties: the Poynting-vector vortices and the field helicity. The chiral-topology near fields allow obtaining unique phase structure distribution for far-field microwave radiation.
Keywords :
chirality; ferrite devices; magnetostatics; microwave antennas; Poynting vector vortices; chiral field microwave antenna; chiral microwave near field; chiral topology; far field radiation; field helicity; magnetostatic mode ferrite disk; magnetostatic oscillations; magnetostatic resonance; microwave radiation; single element structure; thin ferrite disk; Antenna radiation patterns; Ferrites; Magnetic resonance; Magnetostatics; Microwave oscillators; Propagation; antennas; chiral fields; ferrites; magnetostatic resonances; subwavelength energy localization;
Conference_Titel :
Microwave Conference (EuMC), 2014 44th European
Conference_Location :
Rome
DOI :
10.1109/EuMC.2014.6986572