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The printed dipole antenna on thin polyimide film is calculated by using WIPL-D and IE3D based on the method of moment, Micro-Stripes based on TLM method. Its input impedance characteristics are compared with measured data and discussed.

Three day design school of the reception antenna on the digital terrestrial broadcasting for high school students has been held by using the electromagnetic simulator WIPL-D. This school is the first trial of the education based on the electromagnetic simulator. The students designed the reception antennas composed of wire or planar conductor in the frequencies from 470 MHz to 518 MHz. The students could understand the antenna characteristics by seeing the animation of current and electromagnetic field distribution on the display of PC.

Advances in computer hardware technologies accompanied by easy-to-use parallel programming software platforms have led to the wide spread use of parallel processing architectures, such as multi-core central processor units (CPUs) and graphic processing units (GPUs), in technical and scientific computing. Among electromagnetic numerical analysis methods, the finite-difference time-domain (FDTD) method is very well suited for parallel programming, and several implementations of FDTD have been developed and reported to solve electromagnetics problems orders of magnitude faster. Examination of performances of these implementations reveals that, in general, it is more efficient to solve larger FDTD domains than smaller domains. In this paper it is demonstrated that one can exploit the higher efficiency inherent to the solution of larger problem sizes to solve parameter sweep and optimization problems faster: instead of solving multiple smaller FDTD domains separately, these domains can be combined or stacked to form a larger problem and the large problem can be solved more efficiently. It has been shown that up to 40% faster solution can be achieved on GPUs with this method. Index Terms—FDTD methods,

Two finite difference time-domain (FDTD) scattered-field formulations for chiral objects are developed and presented in this paper. The first formulation provides single frequency results, while the second formulation provides multi frequency results from one FDTD simulation. Both formulations are developed for three dimensional electromagnetic applications. Numerical results from the single frequency formulation is presented for the scattering from a chiral sphere. In the multi-frequency formulation, the evaluation of both the electric and magnetic field values at every half-time step, unlike the conventional leap-frog algorithm, is needed to minimize the memory size required to store past values of the field components. Results of this formulation are presented for the co-polarization and cross-polarization of the reflected and transmitted waves from a chiral slab due to normal incidence of a plane wave and for the scattered field from a chiral sphere. Validation is performed by comparing the results with those based on the exact solution.

The probe-fed truncated square patch microstrip antenna is calculated by using WIPL-D based on the method of moment, Micro-Stripes based on TLM method and Fidelty based on FDTD method. Its input impedance and radiation characteristics are compared and discussed.