An efficient tunable decoupling and matching method for simplifying compact dual-band mobile terminal antennas
An efficient tunable decoupling and matching method for simplifying compact dual-band mobile terminal antennas
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一种用于简化紧凑型双频段移动终端天线的高效可调谐去耦和匹配方法
DOI：
10.1002/mmce.22565
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发表时间：
2021
影响因子：
1.7
通讯作者：
Huang Jifu
中科院分区：
文献类型：
--
作者：
Chen Yi;Hua Changzhou;Xu Jun;Lu Yunlong;Huang Jifu
提出了一种高效的可调谐解耦匹配方法，用于简化小型移动的终端天线，该方法同时工作在两个独立的频段。为了实现载波聚合，该设计中的低频带可在传统标准感兴趣的频率上调谐，而高频带提供固定的宽带宽以满足5G移动的终端应用的带宽需求。系统地研究了多单元天线系统，该系统包含简单的天线结构和可调谐网络，以实现双频解耦和匹配功能。网络结构被简化，以最大限度地减少在保持良好的性能所带来的损失。为了证明所提出的方法，开发了一种双元件天线系统，其中低频带可以在2.25至2.75 GHz的频率范围内调谐，并且宽的高频带可以覆盖4.42至6.21 GHz的频率。结果表明，该方法具有较高的总效率、较低的包络相关系数和较稳定的辐射方向图，验证了该方法对简化天线结构的有效性。
An efficient tunable decoupling and matching method is proposed for simplifying compact mobile terminal antennas, that operates simultaneously in two independent bands. To enable carrier aggregation, the lower band in this design is tunable over the frequencies of interest for the traditional standards, while the upper band provides a fixed broad bandwidth to meet the bandwidth demands of 5G mobile terminal applications. Multi‐element antenna systems, containing a simple antenna structure combined with tunable networks to realize dual‐band decoupling and matching function, are systematically studied. The network structures are simplified to minimize the losses incurred in maintaining a good performance. To demonstrate the proposed approach, a two‐element antenna system is developed in which the lower band can be tuned over the frequency range of 2.25 to 2.75 GHz, and the broad upper band can cover frequencies from 4.42 to 6.21 GHz. Good performance such as high total efficiency, low envelope correlation coefficient and stable radiation patterns, can be observed, thus, validating the effectiveness of the proposed method for simplifying the antenna structure.