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Microwave focusing with uniaxially symmetric gradient index metamaterials
Author(s): Sara Wheeland; Oren Sternberg; Israel Perez; John D. Rockway
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Paper Abstract

Previous efforts to create a metamaterial lens in the microwave X band frequency range focused on the development of a device with biaxial symmetry. This allows for focusing solely along the central axis of propagation. For applications involving wave direction or energy diversion, focusing may be required off the central axis. This work explores a metamaterial device with uniaxial symmetry, namely in the direction of propagation. Ray-trace optimization and full-wave finite element simulations contribute to the design of the lens. By changing the placement of the focus, we achieve further control of the focus parameters. While the present work uses coils, the unit cell can consist of any structure or material.

Paper Details

Date Published: 16 September 2016
PDF: 7 pages
Proc. SPIE 9918, Metamaterials, Metadevices, and Metasystems 2016, 99181I (16 September 2016); doi: 10.1117/12.2237399
Show Author Affiliations
Sara Wheeland, SPAWAR Systems Ctr. Pacific (United States)
Oren Sternberg, SPAWAR Systems Ctr. Pacific (United States)
Israel Perez, SPAWAR Systems Ctr. Pacific (United States)
John D. Rockway, SPAWAR Systems Ctr. Pacific (United States)


Published in SPIE Proceedings Vol. 9918:
Metamaterials, Metadevices, and Metasystems 2016
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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