TY - JOUR
T1 - Wideband Elliptical Metasurface Cloaks in Printed Antenna Technology
AU - Moreno, Gabriel
AU - Yakovlev, Alexander B.
AU - Bernety, Hossein Mehrpour
AU - Werner, Douglas H.
AU - Xin, Hao
AU - Monti, Alessio
AU - Bilotti, Filiberto
AU - Alu, Andrea
N1 - Funding Information:
Manuscript received July 27, 2017; revised February 22, 2018; accepted April 10, 2018. Date of publication April 24, 2018; date of current version July 3, 2018. This work was supported in part by NSF I/UCRC under Grant 1539990 and in part by Intel Corporation. (Corresponding author: Alexander B. Yakovlev.) G. Moreno and A. B. Yakovlev are with the Department of Electrical Engineering, University of Mississippi, Oxford, MS 38677-1848 USA (e-mail: gmoreno@go.olemiss.edu; yakovlev@olemiss.edu).
Publisher Copyright:
© 1963-2012 IEEE.
PY - 2018/7
Y1 - 2018/7
N2 - In this paper, we apply the mantle cloaking method to reduce the mutual coupling between two closely spaced wideband antennas operating at microwave frequencies. We show that by introducing two dielectric elliptical shells around the antennas and covering them with two strongly coupled elliptically shaped metasurfaces comprised of I-shaped printed unit cells, it is possible to significantly increase the original bandwidth of the antennas and, at the same time, reduce the mutual electromagnetic interaction. This effect is observed both in a reduction of mutual S-parameters between the antennas and in the restoration of the original radiation patterns, as if the antennas were almost completely isolated from each other. Broadband metasurface/cloak designs are proposed for two geometries, with the free-standing strip monopole antennas placed over a ground plane and with the metasurface cloaks integrated with microstrip antennas.
AB - In this paper, we apply the mantle cloaking method to reduce the mutual coupling between two closely spaced wideband antennas operating at microwave frequencies. We show that by introducing two dielectric elliptical shells around the antennas and covering them with two strongly coupled elliptically shaped metasurfaces comprised of I-shaped printed unit cells, it is possible to significantly increase the original bandwidth of the antennas and, at the same time, reduce the mutual electromagnetic interaction. This effect is observed both in a reduction of mutual S-parameters between the antennas and in the restoration of the original radiation patterns, as if the antennas were almost completely isolated from each other. Broadband metasurface/cloak designs are proposed for two geometries, with the free-standing strip monopole antennas placed over a ground plane and with the metasurface cloaks integrated with microstrip antennas.
KW - Elliptical metasurface cloak
KW - mantle cloaking
KW - microstrip antenna
KW - reduction of mutual coupling
KW - strip monopole antenna
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U2 - 10.1109/TAP.2018.2829809
DO - 10.1109/TAP.2018.2829809
M3 - Article
AN - SCOPUS:85046004038
VL - 66
SP - 3512
EP - 3525
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
SN - 0018-926X
IS - 7
ER -