TY - JOUR
T1 - Low cost and broadband dual-polarization metamaterial lens for directivity enhancement
AU - Turpin, Jeremiah P.
AU - Wu, Qi
AU - Werner, Douglas H.
AU - Martin, Bonnie
AU - Bray, Matt
AU - Lier, Erik
N1 - Funding Information:
Manuscript received December 12, 2011; revised July 04, 2012; accepted August 08, 2012. Date of publication August 17, 2012; date of current version November 29, 2012. This work was supported by the Lockheed Martin University Research Initiative (URI) program. J. P. Turpin, Q. Wu, and D. H. Werner are with the Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802 USA (e-mail: dhw@psu.edu). B. Martin, M. Bray, and E. Lier are with Lockheed Martin Commercial Space Systems, Newtown, PA USA. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TAP.2012.2214013
PY - 2012
Y1 - 2012
N2 - Metamaterials have been used in many different configurations to enhance the radiation properties of antennas. However, the vast majority of these metamaterial applications only consider linearly polarized antennas. This paper discusses the theory, design, implementation, and measurements of a far-field collimating lens for use with a circularly-polarized crossed-dipole antenna constructed from a 3D-volumetric metamaterial slab. Zero-index materials (ZIM) and low-index materials (LIM) cause the magnitude and phase of the radiated field across the face of the lens to be distributed uniformly, increasing the broadside gain over the feed antenna alone. Full-wave simulations were used in design of the lens, and a prototype metamaterial lens (meta-lens) was constructed and measured to verify the theoretical predictions. The meta-lens was found to increase the measured directivity of a crossed-dipole feed antenna by more than 6 dB, in good agreement with numerical simulations.
AB - Metamaterials have been used in many different configurations to enhance the radiation properties of antennas. However, the vast majority of these metamaterial applications only consider linearly polarized antennas. This paper discusses the theory, design, implementation, and measurements of a far-field collimating lens for use with a circularly-polarized crossed-dipole antenna constructed from a 3D-volumetric metamaterial slab. Zero-index materials (ZIM) and low-index materials (LIM) cause the magnitude and phase of the radiated field across the face of the lens to be distributed uniformly, increasing the broadside gain over the feed antenna alone. Full-wave simulations were used in design of the lens, and a prototype metamaterial lens (meta-lens) was constructed and measured to verify the theoretical predictions. The meta-lens was found to increase the measured directivity of a crossed-dipole feed antenna by more than 6 dB, in good agreement with numerical simulations.
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U2 - 10.1109/TAP.2012.2214013
DO - 10.1109/TAP.2012.2214013
M3 - Article
AN - SCOPUS:84870902783
VL - 60
SP - 5717
EP - 5726
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 12
M1 - 6272329
ER -