skip to main content

DOE PAGESDOE PAGES

Title: Ultra-thin metasurface microwave flat lens for broadband applications

In this paper, we demonstrate a metasurface-based ultrathin flat lens operating at microwave frequencies. A series of subwavelength metallic split-ring resonators, which are sandwiched between two cross-polarized metallic gratings, are defined to obtain a radially symmetric parabolic phase distribution, covering relative phase differences ranging from 0 to 2.5π radians to create a lens. The tri-layer lens exhibits focusing/collimating of broadband microwaves from 7.0 to 10.0 GHz, with a gain enhancement of 17 dBi at a central wavelength 9.0 GHz while fed by a rectangular horn antenna. The measured focal length agrees reasonably well with design, achieving a 3 dB directionality <4.5° and confirming high-quality beam collimation along the propagation direction. Finally, the demonstrated metasurface flat lens enables light-weight, low-cost, and easily deployable flat transceivers for microwave communication, detection, and imaging applications.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-21923
Journal ID: ISSN 0003-6951
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 22; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE National Nuclear Security Administration (NNSA); LANL Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; antennas; microwaves; lenses; polarization; optical resonators
OSTI Identifier:
1409765
Alternate Identifier(s):
OSTI ID: 1361913

Azad, Abul K., Efimov, Anatoly V., Ghosh, Shuprio, Singleton, John, Taylor, Antoinette J., and Chen, Hou-Tong. Ultra-thin metasurface microwave flat lens for broadband applications. United States: N. p., Web. doi:10.1063/1.4984219.
Azad, Abul K., Efimov, Anatoly V., Ghosh, Shuprio, Singleton, John, Taylor, Antoinette J., & Chen, Hou-Tong. Ultra-thin metasurface microwave flat lens for broadband applications. United States. doi:10.1063/1.4984219.
Azad, Abul K., Efimov, Anatoly V., Ghosh, Shuprio, Singleton, John, Taylor, Antoinette J., and Chen, Hou-Tong. 2017. "Ultra-thin metasurface microwave flat lens for broadband applications". United States. doi:10.1063/1.4984219. https://www.osti.gov/servlets/purl/1409765.
@article{osti_1409765,
title = {Ultra-thin metasurface microwave flat lens for broadband applications},
author = {Azad, Abul K. and Efimov, Anatoly V. and Ghosh, Shuprio and Singleton, John and Taylor, Antoinette J. and Chen, Hou-Tong},
abstractNote = {In this paper, we demonstrate a metasurface-based ultrathin flat lens operating at microwave frequencies. A series of subwavelength metallic split-ring resonators, which are sandwiched between two cross-polarized metallic gratings, are defined to obtain a radially symmetric parabolic phase distribution, covering relative phase differences ranging from 0 to 2.5π radians to create a lens. The tri-layer lens exhibits focusing/collimating of broadband microwaves from 7.0 to 10.0 GHz, with a gain enhancement of 17 dBi at a central wavelength 9.0 GHz while fed by a rectangular horn antenna. The measured focal length agrees reasonably well with design, achieving a 3 dB directionality <4.5° and confirming high-quality beam collimation along the propagation direction. Finally, the demonstrated metasurface flat lens enables light-weight, low-cost, and easily deployable flat transceivers for microwave communication, detection, and imaging applications.},
doi = {10.1063/1.4984219},
journal = {Applied Physics Letters},
number = 22,
volume = 110,
place = {United States},
year = {2017},
month = {5}
}

Works referenced in this record:

A metamaterial solid-state terahertz phase modulator
journal, February 2009
  • Chen, Hou-Tong; Padilla, Willie J.; Cich, Michael J.
  • Nature Photonics, Vol. 3, Issue 3, p. 148-151
  • DOI: 10.1038/nphoton.2009.3