Document Type : Original Article
Authors
Department of Physics, Faculty of Basic Science, Khatam Al-Anbia (PBU) University, Tehran, Iran.
Abstract
Composite lattice grids reinforced with silica and carbon nanofibers filled with spongy materials can be used as lightweight radar absorbing nanostructures1. In this paper, a computational approach based on the Periodic Moment Method (PMM) has been developed to calculate the reflection coefficients of these composite lattice grids, and two different mechanisms for reflection reduction in these grids have been identified2. The results from this simulation mechanism indicate that at low frequencies, the reflection coefficients increase with the volume fraction of the grid cell wall3. At high frequencies, several diffraction lobes propagate away from the doubly periodic plane, and the reflection coefficients depend on both the cell wall volume fraction and the interelement distance4.
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