Stacked Conical Ring Dielectric Resonator Antenna Excited by a Monopole for Improved Ultrawide Bandwidth

被引：34

作者：

Ozzaim, Cengiz ^{[1
]}

Ustuner, Fatih ^{[2
]}

Tarim, Nevzat ^{[3
]}

机构：

[1] Dumlupinar Univ, Dept Elect Engn, TR-43100 Kutahya, Turkey

[2] Natl Metrol Inst Sci & Technol Res Council TUBITA, TR-41470 Gebze, Turkey

[3] Turkish AF, Air Supply & Maintenance Ctr Command 1, TR-26000 Eskisehir, Turkey

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2013年 / 61卷 / 03期

关键词：

Dielectric resonator antenna (DRA); quarter-wave monopole; ultrawideband (UWB); DESIGN;

D O I：

10.1109/TAP.2012.2227442

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Stacked conical ring dielectric resonator antennas (DRA) excited by an axi-symmetric coaxial monopole are investigated numerically and experimentally for improved bandwidth. The bandwidth improvement is due to an extra resonance which occurs near the frequency where the monopole height is about a full wavelength. We consider two cases of the hybrid antenna: one case in which the tips of both cones face up and a second case in which the top cone is inverted to form a "sand-glass" shaped DRA. Measured data were obtained to validate the results of simulations. The proposed hybrid antennas can easily offer a fractional impedance bandwidth up to 138% along with monopole type radiation pattern. The antennas have a relatively low peak gain around the extra resonance.

引用

页码：1435 / 1438

页数：5

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