26 فروردین 1403
افشين مرادي

افشین مرادی

مرتبه علمی: استاد
نشانی:
تحصیلات: دکترای تخصصی / فیزیک، نانو اپتیک
تلفن: 08338305010
دانشکده: دانشکده علوم پایه و کاربردی

مشخصات پژوهش

عنوان
Magnetostatic microwaves in circular metallic waveguides filled with uniaxial negative permeability media
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Dispersion, Magnetostatic waves, Microwave propagation, Negative permeability media, Waveguides
پژوهشگران افشین مرادی (نفر اول)، نورهان توکان (نفر دوم)

چکیده

The quasi-magnetostatic (briefly, magnetostatic) microwave propagation in a long, circular cross section waveguide having a metallic wall that is filled with an anisotropic uniaxial magnetic medium (here, a metamaterial consisting of split-ring resonators) is studied. Such waves do not exist in the case of a hollow metallic waveguide or a metallic waveguide filled with an isotropic medium. Physically, the present magnetostatic waves owe their existence to the anisotropic property of the system, where in the absence of this property, these magnetostatic waves disappear. A theoretical analysis is carried out and characteristics of these magnetostatic microwaves in circular metallic waveguides filled with uniaxial negative permeability media are determined. The presented results include the dispersion relation of magnetostatic waves and their corresponding cutoff frequencies, group velocities, transverse modal field distributions, power flows, and stored energies.