A Wideband Conical Beam Cylindrical Dielectric Resonator Antenna

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 dime...

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Veröffentlicht in:	IEEE antennas and wireless propagation letters 2007, Vol.6, p.15-17
Hauptverfasser:	Kumar, A. V. Praveen, Hamsakutty, V., Yohannan, Jaimon, Mathew, K. T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna radiation patterns Antennas Bandwidth Beams (radiation) Broadband antennas conical radiation pattern Dielectric resonator antenna Dielectric resonator antennas Dielectrics Frequency Gain Geometrical optics Microstrip Noise levels Resonators Shape measurement Strip Surface impedance Transmission line measurements Wideband wideband antenna
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Zusammenfassung:	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}35\hbox{\%} at the centre frequency of 3 GHz. Measured radiation patterns are conical in shape and are stable with moderate gain across the matching band.
ISSN:	1536-1225 1548-5757
DOI:	10.1109/LAWP.2006.890747