Radiation-enhancing reflector

C. A. Valagiannopoulos; S. A. Tretyakov

doi:10.1109/EuCAP.2016.7481933

Radiation-enhancing reflector

C. A. Valagiannopoulos, S. A. Tretyakov

Sergei Tretiakov Group

Nazarbayev University

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

We show that it is possible to realize a passive planar reflector whose reflectivity (close to the resonant frequency of the reflector structure) is larger than unity. This reflector is strongly coupled to evanescent fields of external sources and most effectively extracts power from them. Next, this power can be launched into far zone if the surface of the reflector is perturbed by some small passive scatterers. Used as electrically large reflector antennas, such planar surfaces show superdirectivity properties (the effective area is larger than the geometrical area of the reflector) while there is no need for careful subwavelength control over the amplitude and phase of the surface currents.

Original language	English
Title of host publication	2016 10th European Conference on Antennas and Propagation, EuCAP 2016
Publisher	IEEE
Number of pages	3
ISBN (Electronic)	9788890701863
DOIs	https://doi.org/10.1109/EuCAP.2016.7481933
Publication status	Published - 31 May 2016
MoE publication type	A4 Conference publication
Event	European Conference on Antennas and Propagation - Davos, Switzerland Duration: 10 Apr 2016 → 15 Apr 2016 Conference number: 10

Publication series

Name	Proceedings of the European Conference on Antennas and Propagation
ISSN (Electronic)	2164-3342

Conference

Conference	European Conference on Antennas and Propagation
Abbreviated title	EuCAP
Country/Territory	Switzerland
City	Davos
Period	10/04/2016 → 15/04/2016

Keywords

conjugate-matched layer
reflector
superdirectivity

Access to Document

10.1109/EuCAP.2016.7481933

Cite this

@inproceedings{7851a85ac1a1440586439b3b8fc13406,

title = "Radiation-enhancing reflector",

abstract = "We show that it is possible to realize a passive planar reflector whose reflectivity (close to the resonant frequency of the reflector structure) is larger than unity. This reflector is strongly coupled to evanescent fields of external sources and most effectively extracts power from them. Next, this power can be launched into far zone if the surface of the reflector is perturbed by some small passive scatterers. Used as electrically large reflector antennas, such planar surfaces show superdirectivity properties (the effective area is larger than the geometrical area of the reflector) while there is no need for careful subwavelength control over the amplitude and phase of the surface currents.",

keywords = "conjugate-matched layer, reflector, superdirectivity",

author = "Valagiannopoulos, {C. A.} and Tretyakov, {S. A.}",

year = "2016",

month = may,

day = "31",

doi = "10.1109/EuCAP.2016.7481933",

language = "English",

series = "Proceedings of the European Conference on Antennas and Propagation",

publisher = "IEEE",

booktitle = "2016 10th European Conference on Antennas and Propagation, EuCAP 2016",

address = "United States",

note = "European Conference on Antennas and Propagation, EuCAP ; Conference date: 10-04-2016 Through 15-04-2016",

}

TY - GEN

T1 - Radiation-enhancing reflector

AU - Valagiannopoulos, C. A.

AU - Tretyakov, S. A.

N1 - Conference code: 10

PY - 2016/5/31

Y1 - 2016/5/31

N2 - We show that it is possible to realize a passive planar reflector whose reflectivity (close to the resonant frequency of the reflector structure) is larger than unity. This reflector is strongly coupled to evanescent fields of external sources and most effectively extracts power from them. Next, this power can be launched into far zone if the surface of the reflector is perturbed by some small passive scatterers. Used as electrically large reflector antennas, such planar surfaces show superdirectivity properties (the effective area is larger than the geometrical area of the reflector) while there is no need for careful subwavelength control over the amplitude and phase of the surface currents.

AB - We show that it is possible to realize a passive planar reflector whose reflectivity (close to the resonant frequency of the reflector structure) is larger than unity. This reflector is strongly coupled to evanescent fields of external sources and most effectively extracts power from them. Next, this power can be launched into far zone if the surface of the reflector is perturbed by some small passive scatterers. Used as electrically large reflector antennas, such planar surfaces show superdirectivity properties (the effective area is larger than the geometrical area of the reflector) while there is no need for careful subwavelength control over the amplitude and phase of the surface currents.

KW - conjugate-matched layer

KW - reflector

KW - superdirectivity

UR - http://www.scopus.com/inward/record.url?scp=84979258398&partnerID=8YFLogxK

U2 - 10.1109/EuCAP.2016.7481933

DO - 10.1109/EuCAP.2016.7481933

M3 - Conference article in proceedings

AN - SCOPUS:84979258398

T3 - Proceedings of the European Conference on Antennas and Propagation

BT - 2016 10th European Conference on Antennas and Propagation, EuCAP 2016

PB - IEEE

T2 - European Conference on Antennas and Propagation

Y2 - 10 April 2016 through 15 April 2016

ER -

Radiation-enhancing reflector

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this