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Title: Low-loss negative index metamaterials for X, Ku, and K microwave bands

Low-loss, negative-index of refraction metamaterials were designed and tested for X, Ku, and K microwave frequency bands. An S-shaped, split-ring resonator was used as a unit cell to design homogeneous slabs of negative-index metamaterials. Then, the slabs of metamaterials were cut unto prisms to measure experimentally the negative index of refraction of a plane electromagnetic wave. Theoretical simulations using High-Frequency Structural Simulator, a finite element equation solver, were in good agreement with experimental measurements. The negative index of refraction was retrieved from the angle- and frequency-dependence of the transmitted intensity of the microwave beam through the metamaterial prism and compared well to simulations; in addition, near-field electromagnetic intensity mapping was conducted with an infrared camera, and there was also a good match with the simulations for expected frequency ranges for the negative index of refraction.
Authors:
 [1] ; ; ;  [2] ;  [3]
  1. The MITRE Corporation, 1155 Academy Park Loop, Colorado Springs, CO 80910 (United States)
  2. Physics and Energy Sciences Department, University of Colorado at Colorado Springs, 1420 Austin Bluffs Parkway, Colorado Springs, CO 80918 (United States)
  3. Electrical and Computer Engineering Department, U.S. Air Force Academy, 2354 Fairchild Dr., Suite 2F6, Colorado Springs, CO 80840 (United States)
Publication Date:
OSTI Identifier:
22488532
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 4; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPARATIVE EVALUATIONS; ELECTROMAGNETIC FIELDS; FINITE ELEMENT METHOD; FREQUENCY DEPENDENCE; FREQUENCY RANGE; SIMULATION; SIMULATORS; SLABS; SPLIT-RING RESONATORS