44 matrix-based analysis of electromagnetic waves scattered by an infinite array of slots with polar-type anisotropic media are presented. In the analysis, the total fields are given as sum of the fields which exist even if the apertured plane are replaced by a ground plane and the fields scattered from the magnetic currents within the apertures. The scattered fields are expanded in terms of two-dimensional Floquet modes. Expression of each fields are obtained through eigenvalue problem for 44 coupled wave matrix. Unknown magnetic currents in the apertures are determined by applying Galerkin's method to the continuity condition about the magnetic fields in the apertures. Calculated results for isotropic cases are compared with other results for the complementary problem available in the literature using Babinet's principle. Further numerical calculations are performed in the case of gratings with polar-type anisotropic slab.

Ferroelectric / superconducting heterostructures of Pb(Zr0.52Ti0.48)O3 [PZT] / (Y0.6Pr0.4)Ba2Cu3Oy [YPBCO] have been formed on SrTiO3(100) substrate using an ArF pulsed laser deposition. The crystallinity and surface morphology of heterostructures were investigated by X-ray diffraction measurements and atomic force microscopy. We also measured dielectric and ferroelectric properties of PZT film in the Au/PZT/YPBCO structure. Furthermore, we fabricated a three-terminal devices having the structure described above using an in-situ metal mask exchange system, and investigated the ferroelectric field effect. As a result, we observed a modulation of channel resistance approximately equal to that estimated from the induced carrier and memory effect due to remanent polarization of PZT.

We present a 44 matrix-based analysis of scattering form a two-dimensional rectangular resistive plane gratings placed on an anisotropic dielectric slab. The solution procedure used is formulated by extending the 44 matrix approach. The fields are expanded in terms of two-dimensional Floquet modes. Total fields can be given as sum of primary and secondary fields whose expression are obtained through eigenvalue problem of coupled wave matrix. Unknown currents on resistive patches are determined by applying Galerkin's method to the resistive boundary condition on resistive grating. Results are compared with other numerical examples available in the literature for isotropic cases. Further, numerical calculation are performed in the case of gratings with polar-type anisotropic slab.

The present paper deals with the Richards' transformation which converts a multi-variable positive (real) function to another multi-variable positive (real) function. This transformation is based on the fact that the network function reduces to a constant for all zeros of an irreducible polynomial h (p1, p2, , pn) (1degpi h). And its application to the cascade synthesis or the Bott-Duffin type synthesis of a class of multi-variable driving-point impedances, is discussed. Finally, we present the corresponding transformation for the multi-variable positive (real) matrices.

In this paper, a new simulation approach to the analysis of the reflection characteristics on nonuniform transmission lines (NTLs) is presented. The input and output responses in the time domain and the reflection coefficients in the frequency domain are effectively obtained by using the modified central difference (MCD) simulation and the fast Fourier transform (FFT) technique for Gaussian pulse responses. The simulated results for the reflection characteristics of the NTL transformers are in excellent agreements with the theoretical values. By representing both the reflected voltage and the reflection coefficient, it is shown that this approach is useful to analyze for various types of tapered and stepped NTLs.