Reflectarray Design at Infrared Frequencies: Effects and Models of Material Loss

    Authors

    F. Yang; P. Nayeri; A. Z. Elsherbeni; J. C. Ginn; D. J. Shelton; G. D. Boreman;Y. Rahmat-Samii

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    IEEE Trans. Antennas Propag.

    Keywords

    Infrared; loss effects; nanotechnology; reflectarray; solar power; MICROSTRIP REFLECTARRAY; FABRICATION; ELEMENTS; ANTENNAS; Engineering, Electrical & Electronic; Telecommunications

    Abstract

    Reflectarray designs at infrared (IR) frequencies are investigated in this paper. At the short-wavelength region, material loss becomes an important consideration in reflectarray designs. Based on the measured properties of conductors and dielectrics at infrared frequency, this paper investigates the loss effects on the reflection magnitude and phase of reflectarray elements. It is revealed that when the material loss exceeds a certain limit, the element reflection phase will vary within a narrow phase range instead of a full 360 degrees phase range. An equivalent circuit model is used to understand this phenomenon. Based on the investigation, alternative design methods for infrared reflectarrays are suggested to lower the loss effect. The low loss reflectarrays have great potential for infrared and visible range applications, such as a low profile planar concentrator for solar energy systems.

    Journal Title

    Ieee Transactions on Antennas and Propagation

    Volume

    60

    Issue/Number

    9

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    4202

    Last Page

    4209

    WOS Identifier

    WOS:000308460600020

    ISSN

    0018-926X

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