Dispersion characteristics of different classes of width-modulated microstrip line based unit cells forming High Impedance Surfaces (HISs) are investigated. The HISs consist of a periodic arrangement of macro unit cells, formed by sequential repetitions of similar elementary unit cells. Within the single unit cells, mono- and multi-layer metallization configurations are proposed and numerically characterized, which lead to interesting phenomenon of controlling the position and width of the band-gap and provide a key element for efficient dispersion engineering. The effects of the modulation on periodic and quasi-periodic structures are discussed. The modulation parameter of the different metallization within the macro unit cells are changed, which allows competently controlling the reflective phase over a wide frequency band. The proposed modulation mechanism is well suited for the synthesis of reflectarrays and/or holographic surfaces.

Width-Modulated Microstrip Line Unit Cell: A Basic Element for Dispersion Engineered Surfaces for Reflectarray and Holographic Applications / Matekovits, Ladislau; Y., Ranga. - In: FORUM FOR ELECTROMAGNETIC RESEARCH METHODS AND APPLICATION TECHNOLOGIES. - ELETTRONICO. - 1:(2014), pp. 1-7.

Width-Modulated Microstrip Line Unit Cell: A Basic Element for Dispersion Engineered Surfaces for Reflectarray and Holographic Applications

MATEKOVITS, Ladislau;
2014

Abstract

Dispersion characteristics of different classes of width-modulated microstrip line based unit cells forming High Impedance Surfaces (HISs) are investigated. The HISs consist of a periodic arrangement of macro unit cells, formed by sequential repetitions of similar elementary unit cells. Within the single unit cells, mono- and multi-layer metallization configurations are proposed and numerically characterized, which lead to interesting phenomenon of controlling the position and width of the band-gap and provide a key element for efficient dispersion engineering. The effects of the modulation on periodic and quasi-periodic structures are discussed. The modulation parameter of the different metallization within the macro unit cells are changed, which allows competently controlling the reflective phase over a wide frequency band. The proposed modulation mechanism is well suited for the synthesis of reflectarrays and/or holographic surfaces.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2543092
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