Artificial Neural Networks for the Resonant Resistance Calculation of Electrically Thin and Thick Rectangular Microstrip Antennas

Novel polyethylene-and polypropylenebased electromagnetic wave shielding and absorbing composite materials with low combustibility, enhanced thermal and mechanical properties, containing graphite, grinded wood, and fire retardants, were developed and investigated. Flame-resistance, thermal and mechanical properties of these materials was investigated. Electromagnetic wave reflection coefficients over the frequency range 20-40 GHz were measured; at moderate concentration (10-15%) of functional filler, reflection coefficient can be as low as À16 dB for PE and À11 dB for PP composite, respectively. Coke formation mechanism was investigated, the principal role in this process is attributed to aromatization and condensation of aromatic compounds with the formation of polycyclic aromatic systems, an important role of phosphoric acids in accelerating this process was found.

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Generalized neural method to determine resonant frequencies of various microstrip antennas

Güney

Sağıroğlu

Erler

2001

Int J RF and Microwave Comp Aid Eng

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A generalized method for accurate determination of the resonant frequencies of microstrip antennas of regular geometries, based on the multilayered perceptrons network, is presented. Three learning algorithms, backpropagation, delta-bar-delta, and extended deltabar-delta are used to train perceptrons. Neural results for the resonant frequencies of the rectangular, circular and triangular microstrip antennas are in good agreement with the experimental results available in the literature.

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Artificial Neural Networks for the Resonant Resistance Calculation of Electrically Thin and Thick Rectangular Microstrip Antennas

Cited by 43 publications

References 41 publications

Neural Networks for Antennas

Neural Networks for Antennas

Synthesis and properties of electromagnetic wave shielding polymer materials with low flammability

Generalized neural method to determine resonant frequencies of various microstrip antennas

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