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Metamaterial Devices

Metamaterial Devices. Rubaiyat Islam The Edward S. Rogers Sr. Dept. of Electrical & Computer Engineering, University of Toronto, Toronto, ON. Introduction. Metamaterial/Photonic Crystal :

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Metamaterial Devices

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  1. Metamaterial Devices Rubaiyat Islam The Edward S. Rogers Sr. Dept. of Electrical & Computer Engineering, University of Toronto, Toronto, ON

  2. 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)

  3. m > 0 m < 0 e > 0 e < 0 d E E k S S k H H Introduction Negative-Refractive-Index (NRI) Metamaterials. e > 0, m > 0 e < 0, m < 0 (Right-handed) (Left-handed)

  4. 20.12 mm 8.70 mm Metamaterial Devices Compact phase shifters Compact Branchline Coupler 72 % size reduction Plated via to ground Inter-digital capacitor

  5. 3dB coupler prototype Metamaterial Devices High Coupling edge-coupled coupler (3dB Power splitter implementation) High Directivity (over 40 dB) and high isolation (over 70 dB) coupler

  6. 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)

  7. Sub-diffraction imaging microwave Lens (Grbic 2003) Broadband, zero degree phase, power divider (Antoniades 2005)

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

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