Metamaterial Devices

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Metamaterial Devices

• Rubaiyat Islam
• The Edward S. Rogers Sr. Dept. of Electrical
  Computer Engineering, University of Toronto,
  Toronto, ON

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Introduction
Metamaterial/Photonic Crystal Artificial
medium tailored for specific Electromagnetic
properties by periodically altering the
composition of a host dielectric.
Shelby, Smith Science (April 2001)
Parker, Charlton Physics Web (Aug 2000)
Boeing Physics Today (June 2004)
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Introduction
Negative-Refractive-Index (NRI) Metamaterials.
e gt 0, m gt 0 e lt 0,
m lt 0 (Right-handed)
(Left-handed)
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Metamaterial Devices
Compact phase shifters
Compact Branchline Coupler
72 size reduction
Plated via to ground
Inter-digital capacitor
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Metamaterial Devices
High Coupling edge-coupled coupler (3dB Power
splitter implementation)
High Directivity (over 40 dB) and high isolation
(over 70 dB) coupler
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MS/NRI balun for microstrip to coplanar strip
transition
Leaky wave backfire antenna (Grbic 2002)
Compact Low profile antenna with vertical
polarization (Qureshi, Antoniades 2005)
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Sub-diffraction imaging microwave Lens (Grbic
2003)
Broadband, zero degree phase, power divider
(Antoniades 2005)
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Summary

1. Theory of Negative-Refractive-Index material
   synthesis, experimental verification and device
   fabrication/testing
2. Ongoing work Frequency selective surfaces,
   plasmonic metamaterials and waveguides,
   superluminal pulse propagation, electronically
   tunable phase shifters etc
3. Future work Compact low-loss highly selective
   filters, compact diplexer, evanescent wave filter
   etc