双极化UWB槽天线，具有风筝形槽，具有高隔离性

2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE) Pub Date : 2015-12-01 DOI:10.1109/ICMOCE.2015.7489741

Raj Kumar, R. V. S. Ram Krishna

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引用次数: 3

摘要

本文介绍了一种用于超宽带应用的双端口天线的设计。天线中的辐射元件为l型槽，由两条微带馈线激发产生正交极化。槽线和馈线具有阶跃轮廓以实现宽带阻抗匹配。端口之间的解耦是通过三种不同的结构提供的。首先，在l形槽内的一个角处附着一个倾斜的金属条，然后在l形槽的下方靠近其角处蚀刻一个三叉戟形槽，最后在中间放置一个风筝形槽。该天线实现的阻抗带宽范围为3 GHz至11.6 GHz，而隔离度在3.8 GHz以上范围内优于20 dB。从孔径电场分布和辐射方向图可以看出天线的双极化特性。天线的峰值增益在整个频段范围内从4到6dbi不等。该天线有望用于雷达、成像和高速无线通信中的双极化应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A dual polarized UWB slot antenna with kite shaped slot for high isolation

In this paper, the design of a two port antenna for ultra wideband applications is presented. The radiating element in the antenna is an L-shaped slot which is excited using two microstrip feed lines for generating the orthogonal polarizations. The slot and the feed lines have stepped profiles for achieving wideband impedance matching. The decoupling between the ports is provided by means of three different structures. First, a slant metallic strip is attached at a corner inside the L-shape slot, next, a trident shaped slot is etched below the L-shape slot near its corner and finally, a kite shaped slot is placed in the center. The impedance bandwidth achieved with the antenna is from 3 GHz to 11.6 GHz while the isolation is better than 20 dB from 3.8 GHz onwards. The dual polarized nature of the antenna is shown from the aperture electric field distribution and the radiation patterns. The peak gain of the antenna varies from 4 to 6 dBi over the band. The antenna is expected to be useful for dual polarization applications in radar, imaging and high speed wireless communication.

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2015 International Conference on Microwave, Optical and Communication Engineering (ICMOCE)

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