Search

The interaction of an electromagnetic wave with a linear array of fractally fluted chiral cylinders is considered in the present study. The mathematical manipulation is based on the boundary-value technique combined with the translational addition theorem for cylindrical wave functions, and the first-order perturbed formulation for calculating the extinction as well as scattering cross sections of the linear array is obtained, in which the multiple scattering between N parallel fractally fluted chiral cylinders is taken into consideration. [ABSTRACT FROM AUTHOR]

The multiple-scattering characteristics of a linear array of parallel rotating dielectric cylinders with finite conductivities are studied, and the normally incident wave is assumed to be either a TM or a TE polarization wave with respect to the z axis. Numerical results are presented to show the first-order velocity effect on the scattering patterns in the far zone. [ABSTRACT FROM AUTHOR]

The far-field behavior of a chirostrip dipole antenna on chiroferrite substrates is shown using the generalized spectral domain--exponential matrix technique, and such substrates are made from a nonreciprocal chiral medium and ferrite material Numerical results show that both beam scanning and pattern reshaping can be achieved by adjusting the constitutive parameters of chiroferrite, and the dispersion effects of substrates ate considered in detail. [ABSTRACT FROM AUTHOR]

In this article the radiation characteristics of .a dipole antenna on grounded composite ferrite structures are studied using the generalized spectral-domain-exponential-matrix technique. Numerical results are presented to show the effects of internal do magnetic bias fields, operating frequency, geometrical sizes, and losses of substrates on the radiation pattern and scanning characteristics of dipole antenna. The figures show that it is possible to obtain an optimum radiation pattern by choosing suitable constitutive and geometrical parameters of ferrite materials. [ABSTRACT FROM AUTHOR]

The dispersion characteristics of propagating modes in a lossy parallel-plate uniaxial chiro-omega waveguide are examined, and numerical results are presented to show the influences of bianisotropy, chirality, and omega parameter on the propagation constant and attenuation rate of different hybrid modes. Furthermore, the field distributions of one- and three-order modes are demonstrated, and the lossy effect is taken into consideration. [ABSTRACT FROM AUTHOR]

In this article a spectral-domain decoupling method of electromagnetic waves propagating and radiating of sources in bianisotropic gyroelectromagnetic chiral media is presented, and the general transmission-line-like equations for the description of field quantities (IE, VE, VM, IM) are obtained using the technique of matrix transformation, which has been developed by Tsalamengas. As a practical application, the propagation behavior of electromagnetic waves in multilayered bianisotropic gyroelectromagnetic parallel-plate chirowaveguides is investigated, and it is shown that in such a nonreciprocal chirowaveguide, propagating modes are always hybrid (EH and HE). Especially, the dyadic Green's function of sources in a grounded bianisotropic gyroelectromagnetic chiral superstrate-substrate structure is derived, and it can be directly used to analyze the radiation characteristics of gyroelectromagnetic chirostrip antennas. [ABSTRACT FROM AUTHOR]