期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 62, 期 8, 页码 4220-4229出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2014.2322891
关键词
Cloaking; frequency-selective surfaces; metamaterials; metasurfaces; receiving antennas; scattering
资金
- National Science Foundation [ECCS-0953311]
- Air Force Office of Scientific Research Young Investigator Research Program (YIP) award [FA9550-11-1-0009]
- Defense Threat Reduction Agency YIP award [HDTRA1-12-1-0022]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [0953311] Funding Source: National Science Foundation
We discuss the use of metasurfaces and plasmonic metamaterials to minimize the scattering from receiving antennas and sensors, with the goal of maximizing their absorption efficiency. We first analytically study and highlight the potential of these approaches to realize optimized sensors with the desired level of efficiency, being able to minimize the electrical presence of a receiving antenna for a chosen level of overall absorption. Realistic cloak designs, investigated using full-wave simulations, verify the behavior analytically predicted by Mie theory. These optimized cloaks offer a practical way to flexibly tailor the scattering of receiving antennas, with great benefits in the design and optimization of near-field sensors, remote communication systems, spoof targets and improved antenna blockage resiliency. Optimized covers may also provide other interesting features for the same receiving antenna by just tuning its resistive load, such as optimal wireless power harvesting or high-to-low tunable absorption efficiency.
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