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Direct observation of negative refraction at the millimeter-wave regime by using a flat composite metamaterial

Kamil Boratay Alici, Ekmel Ozbay
2009 Journal of the Optical Society of America. B, Optical physics  
From the scanning experiments, the shifting of the beam to the negative side was observed. The experimental results are in agreement with the Drude-Lorentz model based simulations.  ...  We studied the transmission characteristics of a one-dimensional metamaterial slab operating at the millimeter-wave regime.  ...  The medium was called metamaterial, and it has exciting properties such as a negative index of refraction, negative phase velocity, backward Cherenkov radiation, and the reversal of the Doppler shift  ... 
doi:10.1364/josab.26.001688 fatcat:hvndqodgprgzvijo5y5bdzm4zy

Metamaterials for High-Frequency Electronics

C. Caloz, T. Itoh
2005 Proceedings of the IEEE  
Over the past half-decade, the fundamental physical properties of left-handed (LH) metamaterials (MMs) have been established both theoretically and experimentally, and several novel MM-based microwave  ...  This paper provides a recall of the main properties of MMs and an overview of their demonstrated applications and concepts.  ...  Periodic-type LW antennas can radiate either backward or forward, depending on the space harmonic used, but backward to forward transition (typically based on different harmonics) requires a complex and  ... 
doi:10.1109/jproc.2005.853540 fatcat:dvwwedtyyzegfnovfmajb4gwie

Negative Index Metamaterial Lens for Subwavelength Microwave Detection

Srijan Datta, Saptarshi Mukherjee, Xiaodong Shi, Mahmood Haq, Yiming Deng, Lalita Udpa, Edward Rothwell
2021 Sensors  
One such unusual property of metamaterials is the ability to exhibit negative refractive index over a prescribed range of frequencies.  ...  A lens made of negative refractive index metamaterials can achieve resolution beyond the diffraction limit.  ...  Metamaterials have inspired many novel applications based on their negative refractive index.  ... 
doi:10.3390/s21144782 fatcat:subr4dkz7nak7oe3cx66myb2rm

Composite right/left-handed transmission line metamaterials

A. Lai, C. Caloz, T. Itoh
2004 IEEE Microwave Magazine  
In this article, the fundamental electromagnetic properties of LHMs and the physical realization of these materials are reviewed based on a general transmission line (TL) approach.  ...  In addition, novel microwave devices based on CRLH TLs and their applications are presented.  ...  By constructing a wedge-shaped structure with their SRR-based LHM, the group at USCD demonstrated the concept of a negative index of refraction.  ... 
doi:10.1109/mmw.2004.1337766 fatcat:pvhwg5hw6zfgxm3bnjk43iyx4i

Overview of Metamaterials-Integrated Antennas for Beam Manipulation Applications: The Two Decades of Progress

Bashar A. F. Esmail, Slawomir Koziel, Lukasz Golunski, Huda Bin A. Majid, Rusan Kumar Barik
2022 IEEE Access  
Furthermore, a detailed study of using the MMs to manipulate the radiation is carried out, where different properties such as the positive/negative refractive index, epsilon-near-zero (ENZ), and mu near-zero  ...  These materials enable many applications in communication subsystems, especially in the field of antenna design, to enhance gain, bandwidth, and efficiency, reduce the size, and deflect the radiation pattern  ...  A detailed study of the beam deflection antennas based on MMs is presented in Section V, where different properties of MMs, such as positive/negative refractive index, epsilon-near-zero (ENZ), mu near-zero  ... 
doi:10.1109/access.2022.3185260 fatcat:hpaxoj5ozrgtbftr5xnlksxghy

Metamaterials: A Leading Edge of Science and Technology

Vikrant Thakur, Dhruva Chaudhary
2014 International Journal of Computer Applications  
This review paper is based on the brief history, classification and utilities of metamaterial in various fields.  ...  An introduction to metamaterials followed by a detailed elaboration on how to design unprecedented electromagnetic properties of metamaterials is presented.  ...  They have also been used to increase the beam scanning range in leaky wave antennas by using both the forward and backward waves.  ... 
doi:10.5120/17213-7441 fatcat:fih7jwsxjzfmzajd4i4uo7iyku

A Metasurfaces Review: Definitions and Applications

Syed S. Bukhari, J(Yiannis) Vardaxoglou, William Whittow
2019 Applied Sciences  
Metamaterials offer bespoke electromagnetic applications and novel properties which are not found in naturally occurring materials.  ...  This paper is a critical review of metasurfaces, which are planar metamaterials.  ...  Author Contributions: The lead author of this paper is S.S.B. Additional support was provided by W.W. and Y.V.  ... 
doi:10.3390/app9132727 fatcat:bqinnzsalzaixo4sse7bm5nfsm

EXPERIMENTAL DEMONSTRATION OF METAMATERIAL-BASED PHASE MODULATION

Iftekhar Mirza, Jerico N. Sabas, Shouyuan Shi, Dennis W. Prather
2009 Electromagnetic Waves  
Modulation was brought about by switching between the open and closed states of the rings causing a net change in the effective refractive index and thereby producing a phase variation.  ...  One and two dimensional free-space scanning experiments were carried out where a phase modulation of 62 degrees was demonstrated. The measured data matched well with the numerically simulated results.  ...  Flat lenses based on negative refraction, miniaturized antennas using artificial inductive materials, beam scanning with forward-backward waves and more recently cloaking devices are a few of the groundbreaking  ... 
doi:10.2528/pier09050412 fatcat:hfnwff3frzgrlj6suzpkbtohi4

Low-Profile Metamaterial-Based Adaptative Beamforming Techniques [chapter]

Chung-Tse Michael Wu, Pai-Yen Chen
2020 Modern Printed Circuit Antennas [Working Title]  
and weight, as well as a slow beam scanning rate.  ...  The TL MTMs therefore provide a useful platform for observing the phenomena of negative material properties and for reaching various metamaterial-enabled applications.  ...  For the first time, this structure has been demonstrated to exhibit a simultaneously negative permittivity and permeability, resulting in a negative index of refraction.  ... 
doi:10.5772/intechopen.90012 fatcat:ql3cj3fjnjelpokk4yvrta7zra

Two-Dimensional Optical Metasurfaces: From Plasmons to Dielectrics

Bo Liu, Kerui Song, Jiangnan Xiao
2019 Advances in Condensed Matter Physics  
Based on the different type of the material, optical metasurfaces can be separated in two categories by the materials: one is metal and the other is dielectric.  ...  By reasonably designing the relevant parameters of the unit structure such as the size, direction, and shape, different functions of metasurfaces can realize and bring a wide range of applications.  ...  Acknowledgments This work was supported by the National Natural Science Foundation of China (No. 61675048).  ... 
doi:10.1155/2019/2329168 fatcat:gr36x6kocndmjbrsbyztxrjtci

Periodic FDTD analysis of leaky-wave structures and applications to the analysis of negative-refractive-index leaky-wave antennas

T. Kokkinos, C.D. Sarris, G.V. Eleftheriades
2006 IEEE transactions on microwave theory and techniques  
The proposed methodology is first validated and then employed to model leaky-wave radiation from a two-dimensional negative-refractive-index transmission-line (NRI-TL) medium.  ...  Index Terms-Complex propagation constants, finite-difference time-domain (FDTD) methods, leaky-wave antennas (LWAs), negative-refractive-index (NRI), periodic boundary conditions. where he is currently  ...  Recently, the study of leaky-waves in negativerefractive-index (NRI) metamaterial-based structures has indicated the possibility of designing novel types of one-and two-dimensional LWAs, thus adding a  ... 
doi:10.1109/tmtt.2006.871367 fatcat:y5bx6llhirdhlkx7axyqgkszry

Metamaterial-inspired Antennas: A Review of the State of the Art and Future Design Challenges

Christos Milias, Rasmus B. Andersen, Pavlos I. Lazaridis, Zaharias D. Zaharis, Bilal Muhammad, Jes T. B. Kristensen, Albena Mihovska, Dan D. S. Hermansen
2021 IEEE Access  
ACKNOWLEDGMENT This study has been conducted under the project 'MObility and Training fOR beyond 5G ecosystems (MOTOR5G)'.  ...  There are two main metamaterial-based techniques that are capable of accomplishing gain enhancement: • Placement of ZIM (zero-index materials) or NZRI (near-zero refractive index) materials as superstrate  ...  NZRI materials have a refractive index n that approaches VOLUME X, 2021 zero.  ... 
doi:10.1109/access.2021.3091479 fatcat:okcbjbx4b5dszbncj5gr5ru6sa

Forward and backward leaky wave radiation with large effective aperture from an electronically tunable textured surface

D.F. Sievenpiper
2005 IEEE Transactions on Antennas and Propagation  
His interests include novel electromagnetic materials, low-cost beam steering, RF MEMS for advanced antennas and radio front ends, and new communication system architectures.  ...  He is currently a Senior Research Staff Scientist with HRL Laboratories, Malibu, CA, where he works in the field of electromagnetics, antennas, and wireless communication.  ...  Lee for providing the flared notch antenna used as the feed in these experiments, and M. Musni for help with fabrication and measurements.  ... 
doi:10.1109/tap.2004.840516 fatcat:ak34jzsw7vdu7fmyq3kwul6gzi

A Comprehensive Survey of "Metamaterial Transmission-Line Based Antennas: Design, Challenges, and Applications"

Mohammad Alibakhshikenari, Bal S. Virdee, Leyre Azpilicueta, Mohammad Naser-Moghadasi, Mobayode O. Akinsolu, Chan H. See, Bo Liu, Raed A. Abd-Alhameed, Francisco Falcone, Isabelle Huynen, Tayeb A. Denidni, Ernesto Limiti
2020 IEEE Access  
Therefore, this survey provides a wide overview of key early-stage concepts of metematerial-based designs as a thorough reference for specialist antennas and microwave circuits designers.  ...  In this review paper, a comprehensive study on the concept, theory, and applications of composite right/left-handed transmission lines (CRLH-TLs) by considering their use in antenna system designs have  ...  In Fig.4 , the CRLH-TL has a negative refractive index in its LH-range and a positive refractive index of refraction in its RH-range. A. LC NETWORK Naturally, homogeneous CRLH-TLs do not exist.  ... 
doi:10.1109/access.2020.3013698 fatcat:bvk74babefhntc2pq2ouj4dnc4

Parametric Study of Silicon–Based Optical Leaky-Wave Antenna

Ali A. Hummadi, R. S. Fyath
2014 INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY  
Parametric study is presented for 1550 nm CMOS compatible optical leaky wave antenna. The antenna is designed with Si3N4 waveguide perturbed periodically with silicon.  ...  Simulation results are obtained using the commercial software package CST STUDIO SUITE 2012 and indicate clearly the strong dependence of radiation parameters on the number and dimensions of the silicon  ...  This result can be used to scan (steer) the radiated beam by turning the wavelength of the incident wave. Fig 1 : 1 Silicon-based optical leaky wave antenna. (a) Three-dimensional model.  ... 
doi:10.24297/ijct.v13i9.2371 fatcat:n7nt3xsz2ndnvemowr32fbnjzi
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