Search results for: Artur Noga
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In the paper selected issues of feeding networks for dual-polarized linear antenna arrays designed for 2×2 MIMO applications are described. The influence of topology of corporate feeding network on achieved port-to-port isolation is shown as the result of computer simulations. As an example, four element linear arrays of two-layer electromagnetically coupled microstrip antennas designed for U-NII...
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Numerical approach to frequency response problems usually requires that the system governing equation is solved repeatedly at many frequencies. The computational efficiency of the overall process can be increased by departing from traditional sequential computing model in favor of utilizing the parallel processing capability commonly offered by modern hardware. In this paper, we consider a hybrid...
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In this paper, the GPU implementation of the method of moments (MoM) for solving electromagnetic scattering and radiation problems is presented. A single-CPU sequential MoM algorithm for analysis of arbitrary conducting 3D body-wire structures is ported using CUDA to heterogeneous CPU/GPU platform. Computational efficiency and measured speedups over a reference single-thread CPU implementation for...
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In this paper, a simple adaptive frequency sampling scheme employing interval bisection combined with the Cauchy method implemented through Stoer-Bulirsch algorithm is examined as a tool for generating broadband shielding behavior of wire-grid cages from “rigorous” electromagnetic simulation based on the method-of-moments. The approach offers fast and accurate frequency-sweep calculations and a possibility...
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In this paper, a CUDA-enabled GPU accelerated implementation of Method of Moments (MoM) for solving scattering and radiation electromagnetic problems is presented. The solution is based on the frequency-domain Electric Field Integral Equation (EFIE) formulation for arbitrary configuration of conducting bodies and wires. The CUDA environment is employed to port a single-CPU sequential code to the parallel...
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In this paper, a hybrid technique combining the FDTD method and Physical Optics (PO) approximation is presented as a tool for analysis of planar antennas radiating in the presence of electrically large conductive structures. The surface equivalence theorem is used to interface the FDTD and PO subdomains and establish equivalent current sources. To increase computational efficiency of the proposed...
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The Physical Optics (PO) approximation is investigated as tool for analysis of scattering problems involving coated electrically large conducting platforms. The PO-derived current is corrected by including additional terms that account for diffraction phenomena. Numerical example demonstrates usefulness and limitations of the approach and compares results for conducting and coated plate.
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This communication introduces a CUDA-enabled GPU accelerated technique for broadband analysis of arbitrary 3D conducting body-wire radiating/scattering structure. The solution is based on the integral equation dis-cretized by the method of moments (MoM) with the use of RWG-type basis functions. Wide-band data are generated from MoM simulation employing an adaptive frequency sampling of the observed...
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IEEE Antennas and Wireless Propagation Letters > 2011 > 10 > 480 - 483
In this letter, a CUDA-enabled graphics processing unit (GPU)-accelerated implementation of the method of moments (MoM) for solving three-dimensional conducting body–wire problems is presented. The solution is based on the mixed potential integral equation (MPIE) discretized using Rao–Wilton–Glisson (RWG) basis functions. The CUDA environment is employed to port a single-CPU sequential code to the...
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A hybrid technique combining the FDTD method and Physical Optics (PO) approximation is investigated as tools for efficient analysis of antennas radiating in the presence of complex structures (i.e. dielectric bodies and electrically large conducting platforms). Numerical examples are given to demonstrate considerable saving in both computer memory and CPU time offered by the proposed approach.
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Asymptotic waveform evaluation technique and the Neville-type Stoer-Bulirsch algorithm are investigated and compared as the tools for efficient performance evaluation of antennas with emphasis placed on their input impedance over a wide frequency band. Numerical results are given for a helical antenna with a truncated-cone reflector.
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This paper briefly introduces the MoM-based computationally efficient technique combining the domain decomposition and Z matrix interpolation supported by an adaptive frequency sampling for the wide-band performance evaluation of antennas/scatterers. Numerical examples demonstrate the usefulness and effectiveness of the technique and the offered saving in terms of both CPU time and memory storage...
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