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A Wideband Conical Beam Cylindrical Dielectric Resonator Antenna

Research output: Contribution to journalJournal article

<mark>Journal publication date</mark>2007
<mark>Journal</mark>IEEE Antennas and Wireless Propagation Letters
Number of pages3
Pages (from-to)15-17
<mark>Original language</mark>English


The letter proposes a novel cylindrical dielectric resonator antenna (DRA) geometry with low radiation Q-value facilitating wide band operation with conical radiation patterns. The DRA is fed by a microstrip transmission line with a vertical strip that is attached to the DRA surface. At optimum dimensions and position of the vertical strip on the horizontal microstrip, the DRA exhibits an impedance bandwidth ( $vert {rm S}_{11}vert < - 10$ dB) of ${sim}35hbox{%}$ at the centre frequency of 3 GHz. Measured radiation patterns are conical in shape and are stable with moderate gain across the matching band.