Scattering by an infinite periodic array of microstrip elements

Abstract

An andysis of the scattering by an infinite periodic array of microstrip disks is made using a Gderkin solution of a vector integtal equation. The solution is examined for convergence and compared with theory and experiment. The solution is used to minimize the loss and maximize the bandwidth of the element in a reflectarray configuration.

Synthesis and Optimization of Almost Periodic Antennas Using Floquet Modal Analysis and MoM-GEC Method

“…A Floquet theory is proposed to reduce the infinite domain to a single cell with periodic walls. An electrical field is then formulated and solved through a MoM-GEC [20] [21] approach in a spectral domain [22] [23] [24] [25]. The structure under analysis is shown in Figure 1.…”

A New Approach Combining Surrounded-Element and Compression Methods for Analyzing Reconfigurable Reflectarray Antennas

“…The isolated cell approach [11] evaluates the unit-cell radiated field by analyzing the field scattered from the cell without considering the effects of its surrounding elements. The Floquet approach [12] considers that each radiating element is extracted from an infinite periodic array. This method does not take into account accurately the mutual coupling given that it assumes that the individual element is surrounded by identical neighbors.…”

An efficient numerical technique to predict phase responses of reconfigurable reflectarray cells with mutual coupling

“…To synthesize the array, the states of the active cells are selected so as to comply with the desired phase-shifts and to produce the required antenna radiation pattern. The selection of the active cells is commonly performed by considering the phase responses calculated with Floquet boundary conditions [5]. The Floquet approach assumes that the unitary cell is surrounded by identical cells, which is not verified in an actual RRA.…”