Phase characteristics of subwavelength antenna elements for efficient design of terahertz frequency and millimeter wave metasurfaces

Richard J. Williams; Andrew J. Gatesman; Robert H. Giles; William E. Nixon

doi:10.1117/12.2182582

13 May 2015 Phase characteristics of subwavelength antenna elements for efficient design of terahertz frequency and millimeter wave metasurfaces

Richard J. Williams, Andrew J. Gatesman, Robert H. Giles, William E. Nixon

Author Affiliations +

Proceedings Volume 9483, Terahertz Physics, Devices, and Systems IX: Advanced Applications in Industry and Defense; 94830H (2015) https://doi.org/10.1117/12.2182582
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

In this paper the effects of subwavelength antenna resonator element dimensions on the anomalous reflection properties of metasurfaces operating in the millimeter wave and terahertz frequency regions are investigated. Such two-dimensional structures are finding uses as flat optics in a variety of applications including beam steerers, reflectarrays, and broadband, polarization-independent radar absorbers. Numerical simulations were performed to characterize the reflection phase of square resonators of varying dimensions for several metasurface and reflectarray designs. A simple empirical model is developed for efficient characterization of metasurface phase characteristics in lieu of expensive numerical simulation software.

Citation Download Citation

Richard J. Williams, Andrew J. Gatesman, Robert H. Giles, and William E. Nixon "Phase characteristics of subwavelength antenna elements for efficient design of terahertz frequency and millimeter wave metasurfaces", Proc. SPIE 9483, Terahertz Physics, Devices, and Systems IX: Advanced Applications in Industry and Defense, 94830H (13 May 2015); https://doi.org/10.1117/12.2182582

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