A Perturbational Technique for the Fast Modelling of Printed Reflectarray Elements
نویسندگان
چکیده
This paper presents a novel method for the element characterization of printed reflectarray antennas. Their characterization requires the calculation of the phase of the reflection coefficient versus the patch dimension (phase diagram), when the structure is illuminated by a uniform plane wave. The calculation of the phase diagram is based on the full–wave analysis of the structure in a limited number of points, and a polynomial interpolation of the phase, which takes advantage of a perturbational technique for estimating the phase derivative. This approach significantly reduces the computing time for the calculation of the phase diagram, as shown through an example.
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