W-Band Characterization of Grounded Frequency Selective Surface Arrays Composed of Nonequal Slot Length Subarrays. (16th February 2010)

• Record Type: Journal Article
• Authors: Islam, S.; Stiens, J.; Poesen, G.; Jaeger, I.; De Raedt, W.; Vounckx, R.
• Other Names: Mueller Jan-Erik Academic Editor.
• Is Part Of: International journal of microwave science and technology. Volume 2009(2009)
• Publication Date: 2010-02-16
• Subjects: Radio frequency -- Periodicals; Microwave circuits -- Periodicals; Radiofréquences; Circuits pour micro-ondes; Microwave circuits; Radio frequency; Periodicals; Electronic journals; 621.3813
• DOI: 10.1155/2009/681252
• Languages: English
• ISSNs: 1687-5826

Abstract

Abstract : We present the design and construction of Frequency Selective Surface arrays composed of two subarrays of different slot lengths. We investigated their response variations with the variation of slot length differences of the elementary sub-arrays. Such nonhomogeneous arrays cannot be simulated with Computer Aided Design (CAD) programs because the boundary conditions are not fulfilled by the simulator. In infinite array simulation, the periodic boundary conditions are prescribed on the walls of the unit cell, whereas in the case of sub-arrays of unequal slot length such boundary conditions are not applicable. The CAD simulation of such combined array gives incorrect values of amplitude and phase responses. In this work, we investigate the characteristics of such complex arrays by using heuristic experimental approach. The results of the experimental approach demonstrate that the resultant reflection amplitude and phase of such complex array depend on the difference of slot lengths( Δ L ) of the two sub-arrays.