Characteristic mode analysis of mobile hand held device for MIMO applications

2017 IEEE International Conference on Electrical, Instrumentation and Communication Engineering (ICEICE) Pub Date : 2017-04-01 DOI:10.1109/ICEICE.2017.8191841

Abhishek Pandiya, Y. Choukiker

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Abstract

In this paper, Theory of Characteristic Mode (TCM) has been exploited to enhance the performance of MIMO antenna. Characteristic modes of Chassis has been analyzed, it has been observed that only one mode is resonating around 1GHz. To enable more than one characteristic mode to resonate around 1GHz, Two metal strips are attached along the length of the chassis with the help of shorting pins. A new characteristic mode has been enabled at about 900 MHz due to this modification. In order to obtain characteristic mode at further lower frequency, the newly attached metal strip is meandered. A shift in the characteristic mode has been observed due to this. Afterwards, Dual antenna design is proposed. The Dual antenna consists of metal strip antenna and coupled antenna. The feeding method is proposed with the help of theory of characteristic mode (TCM) to excite the antenna chassis mode and metal strip mode efficiently. The results shows that the strip antenna covers 849–953MHz (LTE Band8) and chassis mode antenna covers frequency 950–1120 MHz.

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用于MIMO应用的移动手持设备特征模式分析

本文利用特征模理论来提高MIMO天线的性能。对底盘的特性模式进行了分析，发现在1GHz附近只有一种模式在谐振。为了使一个以上的特征模式在1GHz附近共振，在短引脚的帮助下，沿着机箱的长度附加了两条金属条。由于此修改，在大约900 MHz处启用了一个新的特征模式。为了在更低的频率下获得特征模态，新附着的金属条被弯曲。由于这一点，已经观察到特征模式的移位。然后，提出了双天线设计。双天线由金属带天线和耦合天线组成。利用特征模理论，提出了有效激发天线底盘模和金属条模的馈电方法。结果表明，条形天线覆盖849-953MHz (LTE Band8)，机箱模式天线覆盖频率950-1120 MHz。

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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2017 IEEE International Conference on Electrical, Instrumentation and Communication Engineering (ICEICE)

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