Design of a wideband miniature dielectric-filled waveguide antenna for collision-avoidance radar

被引：8

作者：

Hajian, M ^{[1
]}

Tran, DP ^{[1
]}

Ligthart, LP ^{[1
]}

机构：

[1] Delft Univ Technol, Inst Res Ctr Telecommun Transmiss & Radar, Dept Elect Engn, NL-2628 CD Delft, Netherlands

来源：

IEEE ANTENNAS AND PROPAGATION MAGAZINE | 2000年 / 42卷 / 01期

关键词：

dielectric antennas; waveguide antennas; road vehicle radar; wideband antennas; FM radar; CW radar;

D O I：

10.1109/74.826346

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：

This article presents a theoretical and experimental study of the design of a miniaturized wideband dielectric-filled waveguide (DFW) antenna. The operational frequency is X band, i.e., 9.0 less than or equal to f less than or equal to 10.5 GHz. The desired bandwidth is 1.5 GHz. The antenna uses an air-gap matching network to reduce its high aperture reflection. In order to ease the integration with antenna circuits and to increase the bandwidth, two E-plane steps are used. The antenna is designed to have -3 dB beamwidths of 60 degrees and 100 degrees for the E- and H-plane patterns, respectively. An input reflection of less than -10 dB for the desired bandwidth is observed. The gain of the antenna is 7 dBi. A cross-polar level of less than -25 dB is achieved. This article discusses the mathematical model for input reflection, the design scenarios, and the experimental results.

引用

页码：34 / 40

页数：7

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