• Article  

      A compact multiband monopole antenna with a defected ground plane 

      Antoniades, Marcos A.; Eleftheriades, G. V. (2008)
      A compact multiband antenna is proposed that consists of a printed circular disc monopole antenna with an L-shaped slot cut out of the ground, forming a defected ground plane. Analysis of the current distribution on the ...
    • Article  

      A compact tri-band monopole antenna with single-cell metamaterial loading 

      Zhu, J.; Antoniades, Marcos A.; Eleftheriades, G. V. (2010)
      A compact tri-band planar monopole antenna is proposed that employs reactive loading and a defected ground-plane structure. The reactive loading of the monopole is inspired by transmission-line based metamaterials (TL-MTM), ...
    • Conference Object  

      Compact, wideband and multiband antennas based on metamaterial concepts 

      Antoniades, Marcos A.; Zhu, J.; Selvanayagam, M.; Eleftheriades, G. V. (2010)
      In this review article, various antenna designs that are based on metamaterial concepts are presented which have been developed at the University of Toronto. Specifically, several antennas that are based on the zero-index ...
    • Article  

      Method of decoupling and independently tuning the second mode of a microstrip-fed slot antenna using series inductive loading 

      Boldaji, A.; Antoniades, Marcos A. (2013)
      In this letter, a systematic method of decoupling and tuning the second mode of a half-wavelength microstrip-fed slot antenna is presented. This is achieved by introducing a series lumped inductive load at the center of ...
    • Article  

      Method of isolating and tuning the two dominant modes of a printed inverted-f antenna 

      Boldaji, A.; Antoniades, Marcos A. (2013)
      A systematic method for decoupling and increasing the tunability of the first and third-order resonant modes of a compact, printed inverted-F antenna is presented. By identifying and utilizing surface-current symmetry in ...
    • Conference Object  

      A multiband printed inverted-F antenna using current symmetry 

      Antoniades, Marcos A.; Boldaji, A. (Institute of Electrical and Electronics Engineers Inc., 2014)
      A compact multiband antenna is presented, which consists of a planar inverted-F structure with two branches placed at key locations along the main radiating arm, and a microstrip-coupled slot in the ground plane. A systematic ...
    • Book Chapter  

      Transmission-line based metamaterials in antenna engineering 

      Antoniades, Marcos A.; Mirzaei, H.; Eleftheriades, G. V. (Springer Singapore, 2016)
      In this chapter, transmission-line-based metamaterials are presented, and their application to the design of passive and active antennas is outlined. Transmission-line metamaterials, also termed negative-refractive-index ...