期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 57, 期 1, 页码 271-274出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2008.2009783
关键词
Dielectric resonator antenna (DRA); inverted-trapezoidal patch; wideband
In this paper, a new dielectric resonator antenna (DRA) is introduced for wideband applications, where a simple L-shaped dielectric resonator (DR) is excited by a conformal inverted-trapezoidal patch connected to a microstrip line. It is observed that the impedance bandwidth can be expanded by using an inserted intermediate substrate, an L-shaped DR, and an inverted-trapezoidal patch feed mechanism. The experimental and numerical results were carried out and compared, showing a good agreement. The measured results demonstrate that the proposed DRA achieves an impedance bandwidth of about 71.4% for VSWR <= 2, covering the frequency range from 3.87 to 8.17 GHz. Furthermore, this antenna provides a stable broadside radiation pattern across the operating bandwidth.
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