Wideband planar transmission line hyperbolic metamaterial for subwavelength focusing and resolution

S. Hassan Sedighy; Caner Guclu; Salvatore Campione; M. Khalaj Amirhosseini; Filippo Capolino

doi:10.1109/TMTT.2013.2288697

Wideband planar transmission line hyperbolic metamaterial for subwavelength focusing and resolution

S. Hassan Sedighy
, Caner Guclu
, Salvatore Campione
, M. Khalaj Amirhosseini
, Filippo Capolino

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

We analyze both theoretically and experimentally subwavelength focusing by using a planar hyperbolic metamaterial (HM) at microwave frequencies. The proposed HM consists of microstrip transmission lines (TLs) loaded by lumped components and exhibits a very flat wave vector iso-frequency dispersion diagram over a wide frequency range, and thus able to transport spectral component with large wavenumbers. This flatness is here exploited to provide subwavelength focusing with a full width half maximum (3-dB power width) of about λ g31 and λ g 19 at 0.5 and 1 GHz, respectively, where λ_g is the guided wavelength in the TL microtrip grid. Numerical simulation results are in good agreement with measurement ones. Moreover, we also investigate the capability of the proposed HM to resolve sources with subwavelength distance of about λ g 6 and λ g 3 at 0.5 and 1 GHz, respectively.

Original language	English
Article number	6665133
Pages (from-to)	4110-4117
Number of pages	8
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	61
Issue number	12
DOIs	https://doi.org/10.1109/TMTT.2013.2288697
State	Published - Dec 2013
Externally published	Yes

Keywords

Hyperbolic metamaterials (HMs)
Subwavelength focusing
Subwavelength resolution
Transmission lines (TLs)

Access to Document

10.1109/TMTT.2013.2288697

Cite this

@article{a123b8a4f0a541e2965432387afb2a21,

title = "Wideband planar transmission line hyperbolic metamaterial for subwavelength focusing and resolution",

abstract = "We analyze both theoretically and experimentally subwavelength focusing by using a planar hyperbolic metamaterial (HM) at microwave frequencies. The proposed HM consists of microstrip transmission lines (TLs) loaded by lumped components and exhibits a very flat wave vector iso-frequency dispersion diagram over a wide frequency range, and thus able to transport spectral component with large wavenumbers. This flatness is here exploited to provide subwavelength focusing with a full width half maximum (3-dB power width) of about λ g31 and λ g 19 at 0.5 and 1 GHz, respectively, where λg is the guided wavelength in the TL microtrip grid. Numerical simulation results are in good agreement with measurement ones. Moreover, we also investigate the capability of the proposed HM to resolve sources with subwavelength distance of about λ g 6 and λ g 3 at 0.5 and 1 GHz, respectively.",

keywords = "Hyperbolic metamaterials (HMs), Subwavelength focusing, Subwavelength resolution, Transmission lines (TLs)",

author = "Sedighy, \{S. Hassan\} and Caner Guclu and Salvatore Campione and Amirhosseini, \{M. Khalaj\} and Filippo Capolino",

year = "2013",

month = dec,

doi = "10.1109/TMTT.2013.2288697",

language = "English",

volume = "61",

pages = "4110--4117",

journal = "IEEE Transactions on Microwave Theory and Techniques",

issn = "0018-9480",

publisher = "Institute of Electrical and Electronics Engineers",

number = "12",

}

TY - JOUR

T1 - Wideband planar transmission line hyperbolic metamaterial for subwavelength focusing and resolution

AU - Sedighy, S. Hassan

AU - Guclu, Caner

AU - Campione, Salvatore

AU - Amirhosseini, M. Khalaj

AU - Capolino, Filippo

PY - 2013/12

Y1 - 2013/12

N2 - We analyze both theoretically and experimentally subwavelength focusing by using a planar hyperbolic metamaterial (HM) at microwave frequencies. The proposed HM consists of microstrip transmission lines (TLs) loaded by lumped components and exhibits a very flat wave vector iso-frequency dispersion diagram over a wide frequency range, and thus able to transport spectral component with large wavenumbers. This flatness is here exploited to provide subwavelength focusing with a full width half maximum (3-dB power width) of about λ g31 and λ g 19 at 0.5 and 1 GHz, respectively, where λg is the guided wavelength in the TL microtrip grid. Numerical simulation results are in good agreement with measurement ones. Moreover, we also investigate the capability of the proposed HM to resolve sources with subwavelength distance of about λ g 6 and λ g 3 at 0.5 and 1 GHz, respectively.

AB - We analyze both theoretically and experimentally subwavelength focusing by using a planar hyperbolic metamaterial (HM) at microwave frequencies. The proposed HM consists of microstrip transmission lines (TLs) loaded by lumped components and exhibits a very flat wave vector iso-frequency dispersion diagram over a wide frequency range, and thus able to transport spectral component with large wavenumbers. This flatness is here exploited to provide subwavelength focusing with a full width half maximum (3-dB power width) of about λ g31 and λ g 19 at 0.5 and 1 GHz, respectively, where λg is the guided wavelength in the TL microtrip grid. Numerical simulation results are in good agreement with measurement ones. Moreover, we also investigate the capability of the proposed HM to resolve sources with subwavelength distance of about λ g 6 and λ g 3 at 0.5 and 1 GHz, respectively.

KW - Hyperbolic metamaterials (HMs)

KW - Subwavelength focusing

KW - Subwavelength resolution

KW - Transmission lines (TLs)

UR - https://www.scopus.com/pages/publications/84890342818

U2 - 10.1109/TMTT.2013.2288697

DO - 10.1109/TMTT.2013.2288697

M3 - Article

AN - SCOPUS:84890342818

SN - 0018-9480

VL - 61

SP - 4110

EP - 4117

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 12

M1 - 6665133

ER -

Wideband planar transmission line hyperbolic metamaterial for subwavelength focusing and resolution

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this