Equivalent perfect magnetic conductor based on epsilon-near-zero media

2014 ◽  
Vol 104 (21) ◽  
pp. 211904 ◽  
Author(s):  
Tingting Wang ◽  
Jie Luo ◽  
Lei Gao ◽  
Ping Xu ◽  
Yun Lai
Keyword(s):  
Magnetic Conductor ◽  
Perfect Magnetic Conductor ◽  
Epsilon Near Zero

scholarly journals Reconfigurable epsilon-near-zero metasurfaces via photonic doping

Nanophotonics ◽  
2018 ◽  
Vol 7 (6) ◽  
pp. 1117-1127 ◽  
Author(s):  
Iñigo Liberal ◽  
Yue Li ◽  
Nader Engheta
Keyword(s):  
Transmission Spectrum ◽  
Transient Analysis ◽  
Dynamic Control ◽  
Next Generation ◽  
Magnetic Conductor ◽  
Reconfigurable Mechanisms ◽  
Perfect Magnetic Conductor ◽  
New Strategy ◽  
Potential Applications ◽  
Epsilon Near Zero

AbstractThe next generation of flat optic devices aspires to a dynamic control of the wavefront characteristics. Here, we theoretically investigated the reconfigurable capabilities of an epsilon-near-zero (ENZ) metasurface augmented with resonant dielectric rods. We showed that the transmission spectrum of the metasurface is characterized by a Fano-like resonance, where the metasurface behavior changed from perfect magnetic conductor to epsilon-and-mu-near-zero material responses. The abrupt variation between these two extreme material responses suggests potential applications in dynamic metasurfaces. We highlighted the causality aspects of ENZ metasurfaces with a transient analysis and numerically investigated different reconfigurable mechanisms. Thus, this work introduces a new strategy for dynamic wavefront engineering.

Analysis of Wideband Antenna Performance over Dual Band Artificial Magnetic Conductor (AMC) Ground Plane

2015 ◽  
Vol 735 ◽  
pp. 273-277 ◽  
Author(s):  
Raimi Dewan ◽  
M.K.A. Rahim ◽  
Mohamad Rijal Hamid ◽  
M.F.M. Yusoff
Keyword(s):  
Coplanar Waveguide ◽  
Ground Plane ◽  
Surface Current ◽  
Dual Band ◽  
Magnetic Conductor ◽  
Wideband Antenna ◽  
Antenna Performance ◽  
Perfect Magnetic Conductor ◽  
Additional Resonance ◽  
Unit Cells

A Coplanar Waveguide (CPW) wideband antenna operates from 2.69 GH to 6.27 GHz which act as reference antenna (RA) has been designed. A Dual Band AMC (DBAMC) unit cells have been proposed to operate at 2.45 GHz and 5.8 GHz. AMC is a metamaterial which mimics the behavior of zero reflection phase of Perfect Magnetic Conductor (PMC) at resonance frequency which not naturally existed in nature. Subsequently the antenna is incorporated with AMC unit cell, herein referred as Antenna with Dual Band AMC (ADBAMC). The DBAMC succesfully excites additional resonance at 2.45 GHz outside the initial operating range of standalone CPW wideband antenna. Incorporation of DBAMC to antenna achieves back lobe suppression at 2.45 GHz and 5.8 GHz. The overall average gain of AMC incorporated antenna is improved from 2.69 to 6.29 GHz as opposed to the standalone reference CPW wideband antenna. Study of surface current is also presented and discussed.

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