Introduction - Definition of Metamaterials (MTMs) and Left-Handed (LH) MTMs - Theoretical Speculation by Viktor Veselago - Experimental Demonstration of Left-Handedness - “Conventional” Backward Waves and Novelty of LH MTMs -Terminology - Transmission Line (TL) Approach - Composite Right/Left- Handed (CRLH) MTMs -MTMs and Photonic Band-Gap (PBG) Structures. - Left-Handedness from Maxwell’s Equations - Boundary Conditions - Reversal of Doppler Effect - Reversal of Vavilov- Cerenkov Radiation - Reversal of Snell’s Law: Negative Refraction.
TL Theory of MTMs - Ideal Homogeneous CRLH TLs: Fundamental TL Characteristics - Equivalent MTM Constitutive Parameters - Balanced and Unbalanced Resonances - Lossy Case; LC Network Implementation: Principle - Difference with Conventional Filters - Transmission Matrix Analysis - Input Impedance - Cut-off Frequencies - Real Distributed 1D CRLH Structures: General Design Guidelines - Microstrip Implementation - Parameters Extraction - Experimental Transmission Characteristics - Conversion from Transmission Line to Constitutive Parameters.
Two-Dimensional MTMs - Principle of the TMM - Scattering Parameters - Voltage and Current Distributions - Interest and Limitations of the TMM; Transmission Line Matrix (TLM) Modelling Method: TLM Modelling of the Unloaded TL Host Network - TLM Modelling of the Loaded TL Host Network (CRLH) - Relationship between Material Properties and the TLM Model Parameters -Suitability of the TLM Approach for MTMs; Negative Refractive Index (NRI) Effects: Negative Phase Velocity - Negative Refraction - Negative Focusing.
Guided-Wave Applications - Dual-Band Components: Dual-Band Property of CRLH TLs - Quarter- Wavelength TL and Stubs - Passive Component Examples: Quadrature Hybrid and Wilkinson Power Divider - Enhanced-Bandwidth Components: Principle of Bandwidth Enhancement - Rat-Race Coupler Example.
Tight Edge-Coupled Coupled-Line Couplers (CLCs): Generalities on Coupled-Line Couplers - TEM and Quasi-TEM Symmetric Coupled-Line Structures with Small Interspacing: Impedance Coupling (IC) - Non- TEM Symmetric Coupled-Line Structures with Relatively Large Spacing: Phase Coupling (PC) - Summary on Symmetric Coupled-Line Structures - Asymmetric Coupled-Line Structures -Advantages of MTM Couplers - Symmetric Impedance Coupler - Radiated-Wave Applications and examples - Uniform and Periodic Leaky-Wave Structures - “Real-Artificial” Materials: the Challenge of Homogenization – Special Topics of Interest.
1. Christophe Caloz, Tatsuo Itoh,”Electromagnetic Metamaterials: Transmission Line Theory and Microwave Applications” by John Wiley & Sons, Inc., Hoboken, New Jersey, 2006.
Students are able to
CO1: learn and understand the principles of Metamaterials
CO2: understand the theory of Transmission line theory of Metamaterials.
CO3: learn the applications of and Principles of two dimensional MTMs.
CO4: learn the principles of Guided Wave Applications of MTMs.
CO5: learn the principles coupling theory and its applications in MTMs.
