Experimental Demonstration of a Millimeter-Wave Metallic ENZ Lens Based on the Energy Squeezing Principle

Author

Torres, V. ; Orazbayev, B. ; Pacheco-Pena, V. ; Teniente, Jorge ; Beruete, M. ; Navarro-Cia, M. ; Sorolla Ayza, Mario ; Engheta, Nader

Author_Institution

Antennas Group - TERALAB, Univ. Publica de Navarra, Pamplona, Spain

Volume

63

Issue

1

fYear

2015

fDate

Jan. 2015

Firstpage

231

Lastpage

239

Abstract

The performance of an epsilon-near zero (ENZ) plano-concave lens is experimentally demonstrated and verified at the D-band of the millimeter-waves. The lens is comprised of an array of narrow metallic waveguides near cut-off frequency, which effectively behaves as an epsilon-near-zero medium at 144 GHz. A good matching with free space is achieved by exploiting the phenomenon of energy squeezing and a clear focus with a transmission enhancement of 15.9 dB is measured. The lens shows good radiation properties with a directivity of 17.6 dBi and low cross-polar components of -34 dB. All results are supported by numerical simulations.

Keywords

antenna radiation patterns; millimetre wave antenna arrays; cross-polar components; energy squeezing principle; epsilon-near zero plano-concave lens; frequency 144 GHz; good radiation properties; millimeter-wave metallic ENZ lens; narrow metallic waveguides; Batteries; Cooperative communication; Energy harvesting; Relays; Scheduling; Simulation; Wireless sensor networks; Epsilon-near-zero; energy squeezing; metallic lenses; metamaterials; millimeter wave devices;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2014.2368112

Filename

6949057