Broadband miniaturised bow-tie antenna for 3D microwave tomography
Broadband miniaturised bow-tie antenna for 3D microwave tomography
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DOI：
10.1049/el.2013.3974
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发表时间：
2014-02
影响因子：
1.1
通讯作者：
M. Jalilvand;Xuyang Li;J. Kowalewski;T. Zwick
中科院分区：
文献类型：
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作者：
M. Jalilvand;Xuyang Li;J. Kowalewski;T. Zwick
提出了一种用于基于层析成像的三维微波成像系统的宽带小型化蝴蝶结天线阵元。小型化是通过向电容式天线元件添加电感条从而降低截止工作频率来实现的。此外，该馈电网络天线的宽带定向辐射特性与理想对称馈电网络馈电天线的宽带定向辐射特性是等价的。这一特性有助于在数值求解器中对天线进行建模。所提出的覆盖0.85-3.25 GHz的宽带天线是一种紧凑的定向单元，结构简单，有可能在三维微波层析成像的数值求解器中实现，而不会增加求解器的计算成本。
A broadband, miniaturised bow-tie antenna array element designed to be used in three-dimensional (3D) microwave imaging systems based on the tomographic approach is proposed. Miniaturisation is achieved by adding inductive strips to the capacitive antenna element and thereby lowering the cutoff operational frequency. Furthermore, the broadband directive radiation characteristic of the antenna with the proposed feeding network is equivalent to that of the same antenna being fed by an ideally symmetrical feeding network. This characteristic assists in the modelling of the antenna in the numerical solver. The proposed broadband antenna covering 0.85–3.25 GHz is a compact, directive element with a simple structure having the potential to be implemented in the numerical solver in 3D microwave tomography without imposing a high computational cost on the solver.