An intelligent design method of double screen frequency selective surfaces (FSSs) is addressed in this paper. The employed unit cell is composed of two metallic screens, which are printed on both sides of a substrate. The presented non-trial-and-error approach is investigated based on the separate design of each screen. With the help of some physical intuition and an equivalent circuit model, i...

This paper describes the results of a physically based time efficient method of simulating Sparameters of RF-High Electron Mobility Transistors (HEMTs) . In a frequency range from 2 GHz up to 120 GHz the simulated S-parameters show good agreement with the measurements obtained in the same frequency range. Using the two-dimensional device simulator MINIMOS-NT and a time domain method critical HE...

Waveform inversion based on least-squares reverse time migration (LSRTM) usually involves Born modeling, which models the primary-only data. As a result, process handles only primaries and corresponding multiple elimination preprocessing of input data is required prior to imaging inversion. Otherwise, multiples left in are mapped as false reflectors, also known crosstalk, final image. At same t...

In this survey, we look at kernelization: algorithms that transform in polynomial time an input to a problem to an equivalent input, whose size is bounded by a function of a parameter. Several results of recent research on kernelization are mentioned. This survey looks at some recent results where a general technique shows the existence of kernelization algorithms for large classes of problems,...