Design of a broadband metasurface Luneburg lens for full-angle operation

Jianping Li, Ronghong Jin, Junping Geng, Xianling Liang, Kun Wang, Malin Premaratne, Weiren Zhu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We present a broadband metasurface Luneburg lens for full-angle operation. The design of the Luneburg lens is based on an inverted substrate parallel-plate-waveguide structure with nonuniform circular holes etched on the upper metallic plate. We show that this structure is superior to existing designs as it allows significant simplification of the fabrication process. To achieve a smooth variation of the effective refractive index profile as well as circular symmetry for the Luneburg lens, sizevariable meta atoms are used for synthesizing the metasurface. The effective refractive index profile can be tuned by varying just the hole diameters. By introducing tapered microstrip ports that are evenly distributed on the circumference of the Luneburg lens, full-angle operation of the lens can be achieved. A prototype with a diameter of 400 mm is fabricated and experimentally evaluated at operating frequencies ranging from 6 GHz to 9 GHz. We show good conceptual agreement between simulated and experimental results.

Original languageEnglish
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
DOIs
Publication statusAccepted/In press - 20 Dec 2018

Keywords

  • Antennas
  • Atomic measurements
  • Dielectrics
  • Full-angle operation
  • inverted substrate parallel-plate-waveguide
  • Lenses
  • Luneburg lens
  • metasurface
  • Microstrip
  • Refractive index
  • Substrates

Cite this

Li, Jianping ; Jin, Ronghong ; Geng, Junping ; Liang, Xianling ; Wang, Kun ; Premaratne, Malin ; Zhu, Weiren. / Design of a broadband metasurface Luneburg lens for full-angle operation. In: IEEE Transactions on Antennas and Propagation. 2018.
@article{2c1ff0336750443480a183f10816e272,
title = "Design of a broadband metasurface Luneburg lens for full-angle operation",
abstract = "We present a broadband metasurface Luneburg lens for full-angle operation. The design of the Luneburg lens is based on an inverted substrate parallel-plate-waveguide structure with nonuniform circular holes etched on the upper metallic plate. We show that this structure is superior to existing designs as it allows significant simplification of the fabrication process. To achieve a smooth variation of the effective refractive index profile as well as circular symmetry for the Luneburg lens, sizevariable meta atoms are used for synthesizing the metasurface. The effective refractive index profile can be tuned by varying just the hole diameters. By introducing tapered microstrip ports that are evenly distributed on the circumference of the Luneburg lens, full-angle operation of the lens can be achieved. A prototype with a diameter of 400 mm is fabricated and experimentally evaluated at operating frequencies ranging from 6 GHz to 9 GHz. We show good conceptual agreement between simulated and experimental results.",
keywords = "Antennas, Atomic measurements, Dielectrics, Full-angle operation, inverted substrate parallel-plate-waveguide, Lenses, Luneburg lens, metasurface, Microstrip, Refractive index, Substrates",
author = "Jianping Li and Ronghong Jin and Junping Geng and Xianling Liang and Kun Wang and Malin Premaratne and Weiren Zhu",
year = "2018",
month = "12",
day = "20",
doi = "10.1109/TAP.2018.2889006",
language = "English",
journal = "IEEE Transactions on Antennas and Propagation",
issn = "0018-926X",
publisher = "IEEE, Institute of Electrical and Electronics Engineers",

}

Design of a broadband metasurface Luneburg lens for full-angle operation. / Li, Jianping; Jin, Ronghong; Geng, Junping; Liang, Xianling; Wang, Kun; Premaratne, Malin; Zhu, Weiren.

In: IEEE Transactions on Antennas and Propagation, 20.12.2018.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Design of a broadband metasurface Luneburg lens for full-angle operation

AU - Li, Jianping

AU - Jin, Ronghong

AU - Geng, Junping

AU - Liang, Xianling

AU - Wang, Kun

AU - Premaratne, Malin

AU - Zhu, Weiren

PY - 2018/12/20

Y1 - 2018/12/20

N2 - We present a broadband metasurface Luneburg lens for full-angle operation. The design of the Luneburg lens is based on an inverted substrate parallel-plate-waveguide structure with nonuniform circular holes etched on the upper metallic plate. We show that this structure is superior to existing designs as it allows significant simplification of the fabrication process. To achieve a smooth variation of the effective refractive index profile as well as circular symmetry for the Luneburg lens, sizevariable meta atoms are used for synthesizing the metasurface. The effective refractive index profile can be tuned by varying just the hole diameters. By introducing tapered microstrip ports that are evenly distributed on the circumference of the Luneburg lens, full-angle operation of the lens can be achieved. A prototype with a diameter of 400 mm is fabricated and experimentally evaluated at operating frequencies ranging from 6 GHz to 9 GHz. We show good conceptual agreement between simulated and experimental results.

AB - We present a broadband metasurface Luneburg lens for full-angle operation. The design of the Luneburg lens is based on an inverted substrate parallel-plate-waveguide structure with nonuniform circular holes etched on the upper metallic plate. We show that this structure is superior to existing designs as it allows significant simplification of the fabrication process. To achieve a smooth variation of the effective refractive index profile as well as circular symmetry for the Luneburg lens, sizevariable meta atoms are used for synthesizing the metasurface. The effective refractive index profile can be tuned by varying just the hole diameters. By introducing tapered microstrip ports that are evenly distributed on the circumference of the Luneburg lens, full-angle operation of the lens can be achieved. A prototype with a diameter of 400 mm is fabricated and experimentally evaluated at operating frequencies ranging from 6 GHz to 9 GHz. We show good conceptual agreement between simulated and experimental results.

KW - Antennas

KW - Atomic measurements

KW - Dielectrics

KW - Full-angle operation

KW - inverted substrate parallel-plate-waveguide

KW - Lenses

KW - Luneburg lens

KW - metasurface

KW - Microstrip

KW - Refractive index

KW - Substrates

UR - http://www.scopus.com/inward/record.url?scp=85058984017&partnerID=8YFLogxK

U2 - 10.1109/TAP.2018.2889006

DO - 10.1109/TAP.2018.2889006

M3 - Article

JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

SN - 0018-926X

ER -