TY - GEN
T1 - Low-profile single-feed highly-directive antennas based on cavity-excited metasurfaces
AU - Epstein, Ariel
AU - Eleftheriades, George V.
N1 - Publisher Copyright: © 2016 IEEE.
PY - 2016/10/25
Y1 - 2016/10/25
N2 - We propose a novel antenna design combining the simplicity of shielded Fabry-Perot leaky-wave antennas (FP-LWA) with the performance of antenna arrays. The device is based on a probe-fed shielded FP-LWA structure, with the standard partially-reflecting surface replaced by a metasurface. The cavity excitation is optimized to uniformly illuminate the aperture, forming radiating hot spots half-a-wavelength apart, while the metasurface imposes the linear phase required to promote directive radiation. This yields a probe-fed low-profile antenna with near-unity aperture illumination efficiency and no edge-taper losses. In previous work we have shown that a Huygens' metasurface can be used to that end; in this report we present an improved design featuring an omega-type bian-isotropic metasurface. The compact device structure (with respect to lens or reflector antennas) and the simple and efficient feeding scheme (with respect to antenna arrays) make these cavity-excited metasurface antennas very appealing for industrial applications, such as satellite communication or automotive radars.
AB - We propose a novel antenna design combining the simplicity of shielded Fabry-Perot leaky-wave antennas (FP-LWA) with the performance of antenna arrays. The device is based on a probe-fed shielded FP-LWA structure, with the standard partially-reflecting surface replaced by a metasurface. The cavity excitation is optimized to uniformly illuminate the aperture, forming radiating hot spots half-a-wavelength apart, while the metasurface imposes the linear phase required to promote directive radiation. This yields a probe-fed low-profile antenna with near-unity aperture illumination efficiency and no edge-taper losses. In previous work we have shown that a Huygens' metasurface can be used to that end; in this report we present an improved design featuring an omega-type bian-isotropic metasurface. The compact device structure (with respect to lens or reflector antennas) and the simple and efficient feeding scheme (with respect to antenna arrays) make these cavity-excited metasurface antennas very appealing for industrial applications, such as satellite communication or automotive radars.
UR - http://www.scopus.com/inward/record.url?scp=84997428790&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/APS.2016.7696356
DO - https://doi.org/10.1109/APS.2016.7696356
M3 - منشور من مؤتمر
T3 - 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings
SP - 1297
EP - 1298
BT - 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings
T2 - 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016
Y2 - 26 June 2016 through 1 July 2016
ER -