Switchable near-zero-index magnetic metamaterial for dynamic beam-scanning lens

A design for a switchable metamaterial is presented that allows for digital control over its bulk properties, from near-zero-index to near-free-space at the targeted operational frequency. A distributed shift register is formed over the slab of metamaterial for individual control of varactor diodes...

Full description

Saved in:
Bibliographic Details
Main Authors: Turpin, J. P., Werner, D. H.
Format: Conference Proceeding
Language:English
Subjects:
Lenses
Magnetic materials
Metamaterials
Resonant frequency
Slabs
Varactors
Voltage control
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A design for a switchable metamaterial is presented that allows for digital control over its bulk properties, from near-zero-index to near-free-space at the targeted operational frequency. A distributed shift register is formed over the slab of metamaterial for individual control of varactor diodes within each unit cell, which tune the resonant frequencies of modified split-ring resonators within selected regions of a hexagonal array. The metamaterial was designed using off-the-shelf components for integration into a cylindrical transformation electromagnetics metamaterial beam-scanning lens for dynamic single-feed antenna beamforming.
ISSN:1522-3965
1947-1491
DOI:10.1109/APS.2012.6348076