On Wave Dynamics Pertaining to Structures with Aperiodic Order
Interactions of electromagnetic (EM) waves with either perfectly periodic or randomly disordered structures are problems of longstanding interest, with many applications. For instance, periodic structures are encountered in a variety of applications in modern EM engineering, such as phased arrays, frequency selective surfaces and photonic band-gap devices, whereas random geometries have been utilized for effective statistical modeling in applications like remote sensing, and propagation in turbulent media and urban environments. Thus, a number of theoretical and computational tools have been developed to characterize wave phenomenologies at the two extremes of the “order” scale, but much less is known about the wave dynamics associated with geometries in the “gray zone” in between (with the possible exception of fractal geometries which have found many applications in EM engineering).
KeywordsAntenna Array Radiation Spectrum Periodic Array Frequency Selective Surface Substitution Rule
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