Browsing by Subject "Radiation efficiency"
Now showing items 1-8 of 8
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Article
Antenna applications of negative-refractive-index transmission-line structures
(2007)A number of new antenna-related applications that have recently been developed at the University of Toronto based on the concept of negative-refractive-index transmission-line metamaterials are reviewed. These include ...
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Article
Broadband planar circularly polarised antenna for ultra-high frequency applications
(2014)A broadband circularly polarised (CP) antenna employing a deformed square loop radiator in combination with two spiraled monopoles is presented, for use in multiple ultra-high frequency applications. This combination of ...
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Article
A compact tri-band monopole antenna with single-cell metamaterial loading
(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), ...
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Article
Method of decoupling and independently tuning the second mode of a microstrip-fed slot antenna using series inductive loading
(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 ...
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Article
Method of isolating and tuning the two dominant modes of a printed inverted-f antenna
(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 ...
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Article
Multiband compact printed dipole antennas using NRI-TL metamaterial loading
(2012)A compact, fully-printed negative-refractive-index transmission-line (NRI-TL) metamaterial-loaded dipole antenna is proposed, which exhibits multiband resonant characteristics that are not harmonically related. The multiband ...
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Conference Object
Negative-refractive-index transmission-line metamaterial-loaded dipole antennas
(2012)Several compact, fully-printed negative-refractive-index transmission-line (NRI-TL) metamaterial-loaded dipole antennas are proposed. The antennas achieve multi-band behaviour by loading a host dipole antenna with series ...
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Article
Planar antennas for compact multiband transceivers using a microstrip feedline and multiple open-ended ground slots
(2015)Two planar antennas for compact multiband transceivers are presented, that employ an open-ended microstrip feedline that couples to multiple open-ended ground slots. The effect of separately introducing each of the slots ...