Analysis of a Spiraphase-Type Reflectarray: Comparison Between Finite and Infinite Models

A full-wave mathematical model was developed to analyze the radiation characteristics of a spiraphase-type finite reflectarray based on ring slot resonators with stubs controlled by p-i-n diodes. The scanning characteristics of the finite 289-element reflectarray with optimized elements were calcula...

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Bibliographic Details
Published in:Electromagnetics 2009-08, Vol.29 (6), p.463-482
Main Authors: Rodriguez-Zamudio, J., Martinez-Lopez, J. I., Rodriguez-Cuevas, J., Martynyuk, A. E.
Format: Article
Language:English
Subjects:
Comparative analysis
electromagnetic coupling
Electromagnetics
finite reflectarray
infinite reflectarray
Mathematical models
phased arrays
Radiation
ring slot resonator
Simulation
spiraphase array
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Summary:A full-wave mathematical model was developed to analyze the radiation characteristics of a spiraphase-type finite reflectarray based on ring slot resonators with stubs controlled by p-i-n diodes. The scanning characteristics of the finite 289-element reflectarray with optimized elements were calculated. According to the simulated characteristics, the optimized reflectarray provides electronic scanning in the XOZ-plane for elevation angles up to 30° with a total aperture efficiency better than 0.22. The characteristics obtained with the developed mathematical model were compared with the simulated characteristics obtained with the mathematical model of the infinite array.
ISSN:0272-6343
1532-527X
DOI:10.1080/02726340903098373