A Reconfigurable Planar Antenna Array (RPAA) with back lobe reduction

2010 International Workshop on Antenna Technology (iWAT) Pub Date : 2010-03-01 DOI:10.1109/IWAT.2010.5464784

M.T. Ali, T. Rahman, M. Kamarudin, R. Sauleau, M. Tan, M. Jamlos

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引用次数: 16

Abstract

A novel structure of Reconfigurable Planar Antenna Array (RPAA) added with a microwave absorber is designed. This antenna is consists of two elements structure, which are the 16-element microstrip rectangular patch antenna structures (top structure) and the separated feed line structure (bottom structure). The unique property of this antenna design is that instead of fabricating all together in the same plane, the antenna's feeding network is separated from the antenna radiating elements (the patches) by an air gap distance. This allows reducing spurious effects from the feed line. This antenna is integrated with RF switches to produce the scanning beam pattern to desired direction. This can be done by controlling the switch state to either on or off mode. The additional material was proposed involves placing a microwave absorber material such as ECCOSORB@ (Emersion & Cuming Microwave Products, Inc., Randolph, and Mass) at the back of the top substrate. The ECCOSORB is useful for suppression of unwanted radiated field and thus improved the back lobe pattern at an average of 10 dB. The simulated results are presented to demonstrate the excellent performance of this antenna.

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具有后瓣抑制的可重构平面天线阵列(RPAA

设计了一种新型的可重构平面天线阵(RPAA)结构。该天线由16元微带矩形贴片天线结构(顶部结构)和分离馈线结构(底部结构)两种单元结构组成。这种天线设计的独特之处在于，天线的馈电网络与天线辐射元件(补丁)通过气隙距离分开，而不是在同一平面上一起制造。这样可以减少来自馈线的杂散效应。该天线与射频开关集成，以产生所需方向的扫描波束模式。这可以通过控制开关状态到开或关模式来实现。提出的额外材料包括在顶部基板的背面放置微波吸收材料，如ECCOSORB@ (Emersion & Cuming microwave Products, Inc.， Randolph, and Mass)。ECCOSORB可用于抑制不需要的辐射场，从而在平均10 dB的情况下改善后瓣方向图。仿真结果证明了该天线的优良性能。

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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2010 International Workshop on Antenna Technology (iWAT)

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