Experimental Verification of Sub-wavelength Focusing Via a Holographic Metallic Screen

Alex M. H. Wong; George V. Eleftheriades

doi:10.1109/APS.2008.4619388

Experimental Verification of Sub-wavelength Focusing Via a Holographic Metallic Screen

Alex M. H. Wong
, George V. Eleftheriades

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

In this paper we have experimentally demonstrated the viability of a subwavelength focusing screen, formed by placing slot antennas over a ground plane. In a proof-of-principle experiment using only 3 slots, we have focused the x-directed e-field to a FWHM of 5.2 mm (0.17-wavelength) at an image plane 4.5 mm (0.15-wavelength) from the screen at f = 10 GHz. Our measured results indicate that the screenpsilas focusing quality and the electric field intensity at the focal spot are only minimally affected by conductor losses. We have also verified that resonant coupling enhances the peak field intensity at the focal spot to a level comparable to the incident field. The loss independence and high transmitted peak intensity make our subwavelength focusing screen an attractive option for practical subwavelength focusing in the near-field.

Original language	English
Title of host publication	2008 IEEE Antennas and Propagation Society International Symposium
Publisher	IEEE
ISBN (Print)	978-1-4244-2041-4
DOIs	https://doi.org/10.1109/APS.2008.4619388
Publication status	Published - Sept 2008
Externally published	Yes
Event	2008 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI - San Diego, CA, United States Duration: 5 Jul 2008 → 12 Jul 2008 https://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=9428

Publication series

Name	Antennas and Propagation Society International Symposium
Publisher	IEEE
ISSN (Print)	1522-3965
ISSN (Electronic)	1947-1491

Conference

Conference	2008 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI
Place	United States
City	San Diego, CA
Period	5/07/08 → 12/07/08
Internet address	https://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=9428

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@inproceedings{ea138b47385849eda0af321d0ffe26f0,

title = "Experimental Verification of Sub-wavelength Focusing Via a Holographic Metallic Screen",

abstract = "In this paper we have experimentally demonstrated the viability of a subwavelength focusing screen, formed by placing slot antennas over a ground plane. In a proof-of-principle experiment using only 3 slots, we have focused the x-directed e-field to a FWHM of 5.2 mm (0.17-wavelength) at an image plane 4.5 mm (0.15-wavelength) from the screen at f = 10 GHz. Our measured results indicate that the screenpsilas focusing quality and the electric field intensity at the focal spot are only minimally affected by conductor losses. We have also verified that resonant coupling enhances the peak field intensity at the focal spot to a level comparable to the incident field. The loss independence and high transmitted peak intensity make our subwavelength focusing screen an attractive option for practical subwavelength focusing in the near-field.",

author = "Wong, \{Alex M. H.\} and Eleftheriades, \{George V.\}",

year = "2008",

month = sep,

doi = "10.1109/APS.2008.4619388",

language = "English",

isbn = "978-1-4244-2041-4",

series = "Antennas and Propagation Society International Symposium",

publisher = "IEEE",

booktitle = "2008 IEEE Antennas and Propagation Society International Symposium",

address = "United States",

note = "2008 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI ; Conference date: 05-07-2008 Through 12-07-2008",

url = "https://www.ieee.org/conferences\_events/conferences/conferencedetails/index.html?Conf\_ID=9428",

}

Wong, AMH & Eleftheriades, GV 2008, Experimental Verification of Sub-wavelength Focusing Via a Holographic Metallic Screen. in 2008 IEEE Antennas and Propagation Society International Symposium., 4619388, Antennas and Propagation Society International Symposium, IEEE, 2008 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI, San Diego, CA, United States, 5/07/08. https://doi.org/10.1109/APS.2008.4619388

Experimental Verification of Sub-wavelength Focusing Via a Holographic Metallic Screen. / Wong, Alex M. H.; Eleftheriades, George V.
2008 IEEE Antennas and Propagation Society International Symposium. IEEE, 2008. 4619388 (Antennas and Propagation Society International Symposium).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Experimental Verification of Sub-wavelength Focusing Via a Holographic Metallic Screen

AU - Wong, Alex M. H.

AU - Eleftheriades, George V.

PY - 2008/9

Y1 - 2008/9

N2 - In this paper we have experimentally demonstrated the viability of a subwavelength focusing screen, formed by placing slot antennas over a ground plane. In a proof-of-principle experiment using only 3 slots, we have focused the x-directed e-field to a FWHM of 5.2 mm (0.17-wavelength) at an image plane 4.5 mm (0.15-wavelength) from the screen at f = 10 GHz. Our measured results indicate that the screenpsilas focusing quality and the electric field intensity at the focal spot are only minimally affected by conductor losses. We have also verified that resonant coupling enhances the peak field intensity at the focal spot to a level comparable to the incident field. The loss independence and high transmitted peak intensity make our subwavelength focusing screen an attractive option for practical subwavelength focusing in the near-field.

AB - In this paper we have experimentally demonstrated the viability of a subwavelength focusing screen, formed by placing slot antennas over a ground plane. In a proof-of-principle experiment using only 3 slots, we have focused the x-directed e-field to a FWHM of 5.2 mm (0.17-wavelength) at an image plane 4.5 mm (0.15-wavelength) from the screen at f = 10 GHz. Our measured results indicate that the screenpsilas focusing quality and the electric field intensity at the focal spot are only minimally affected by conductor losses. We have also verified that resonant coupling enhances the peak field intensity at the focal spot to a level comparable to the incident field. The loss independence and high transmitted peak intensity make our subwavelength focusing screen an attractive option for practical subwavelength focusing in the near-field.

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U2 - 10.1109/APS.2008.4619388

DO - 10.1109/APS.2008.4619388

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 978-1-4244-2041-4

T3 - Antennas and Propagation Society International Symposium

BT - 2008 IEEE Antennas and Propagation Society International Symposium

PB - IEEE

T2 - 2008 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, APSURSI

Y2 - 5 July 2008 through 12 July 2008

ER -

Experimental Verification of Sub-wavelength Focusing Via a Holographic Metallic Screen

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