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A Wideband Conical Beam Cylindrical Dielectric Resonator Antenna

Research output: Contribution to journalJournal article

Published

Journal publication date2007
JournalIEEE Antennas and Wireless Propagation Letters
Volume6
Number of pages3
Pages15-17
Original languageEnglish

Abstract

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.