Low-loss negative index metamaterials for X, Ku, and K microwave bands
- The MITRE Corporation, 1155 Academy Park Loop, Colorado Springs, CO 80910 (United States)
- Physics and Energy Sciences Department, University of Colorado at Colorado Springs, 1420 Austin Bluffs Parkway, Colorado Springs, CO 80918 (United States)
- Electrical and Computer Engineering Department, U.S. Air Force Academy, 2354 Fairchild Dr., Suite 2F6, Colorado Springs, CO 80840 (United States)
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.
- OSTI ID:
- 22488532
- Journal Information:
- AIP Advances, Journal Name: AIP Advances Journal Issue: 4 Vol. 5; ISSN AAIDBI; ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
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