Systematic design method of a mobile multiple antenna system using the theory of characteristic modes

Systematic design method of a mobile multiple antenna system using the theory of characteristic modes
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基于特征模式理论的移动多天线系统系统设计方法

DOI:
10.1049/iet-map.2013.0534
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发表时间:
2014
影响因子:
1.7
通讯作者:
Manteuffel
Manteuffel
中科院分区:
计算机科学4区
文献类型:
--
作者:
Martens;Manteuffel

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在这项研究中,作者提出了一种用于智能手机等小型终端的三端口多输入多输出天线系统的系统设计方法,该系统基于正交底盘模式的选择性激励。其基本思想是以特征模式理论为基础的。这些模式的选择性激励是通过在预定位置集成到印刷电路板(PCB)布局中的多组非谐振电感耦合元件来实现的。带状馈电网络还集成在多层印刷电路板布局中,可实现50Ω的良好阻抗匹配。该天线系统的设计方法是TCM的直接应用,因此对小型终端天线的设计具有普遍意义。此外,由于电小耦合器在印刷电路板的外边缘只需要有限的面积,该方法代表了一种有趣的解决方案,具有明显的扩展到更多端口的潜力。实现的样机与预测的性能非常接近,从而证明了该方法的适用性。
In this study, the authors present a systematic design method of a three‐port multiple‐input–multiple‐output antenna system for small terminals, such as smart phones based on the selective excitation of orthogonal chassis modes. The underlying idea is based on the theory of characteristic modes (TCM). Selective excitation of these modes is realised by sets of non‐resonant inductive coupling elements integrated at predefined positions into the printed circuit board (PCB) layout. Stripline feed networks also integrated within the multi‐layer PCB layout care for a good impedance match to 50 Ω. The design method of this antenna system is a straight forward application of the TCM and is therefore of general interest for the design of small terminal antennas. Furthermore, owing to the electrically small couplers that require only limited area at the outer edge of the PCB the method represents an interesting solution with the clear potential to be extended to more ports. The realised prototype resembles the predicted performance very well and therefore proves the applicability of the proposed method.
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