基于正交图的双频自解耦MIMO天线设计

Yilin Du, Jiangwei Sui, Yi‐Feng Cheng
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引用次数: 1

摘要

提出了一种基于正交辐射方向图的双频自解耦双元MIMO天线设计方法。通过对天线尺寸的精心调整,使两根天线的最大辐射方向在两个频段内自然相互正交,最终实现双频高隔离。与传统的双频MIMO天线相比,该方法不需要任何外部解耦结构。为了验证所提出的方法,设计了两对工作在3.5 GHz和4.9 GHz以及3.5 GHz和5.8 GHz频段的双频印刷偶极子天线。仿真结果表明,该自解耦天线的隔离度优于20 dB,匹配条件优于-10 dB。
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Design of Dual-Band Self-Decoupled MIMO Antennas Based on Orthogonal Patterns
A dual-band self-decoupled two-element MIMO antenna design based on orthogonal radiation patterns is presented. Through careful tuning of the antenna dimension, the maximum radiation directions of two antennas are adjusted to be orthogonal with each other naturally in both the two bands, resulting in eventual dual-band high isolation. Compared to the traditional dual-band MIMO antennas, the proposed method does not require any external decoupling structure. To validate the proposed method, two pairs of dual-band printed dipole antennas, working in the 3.5 GHz and 4.9 GHz band as well as 3.5 GHz and 5.8 GHz, are designed. The simulated results show that the proposed self-decoupled antennas achieve high isolation of better than 20 dB with matching conditions better than -10 dB.
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