T-Shaped Decoupling Network for Wideband Isolation Improvement Between Two Strongly Coupled Antennas

被引：0

作者：

Li, Linsheng ^{[1
]}

Venkatasubramanian, Sathya ^{[1
]}

Lehtovuori, Anu ^{[1
]}

Icheln, Clemens ^{[1
]}

Heino, Mikko ^{[1
]}

Haneda, Katsuyuki ^{[1
]}

机构：

[1] Aalto Univ, Sch Elect Engn, Dept Radio Sci & Engn, Espoo, Finland

来源：

2015 LOUGHBOROUGH ANTENNAS & PROPAGATION CONFERENCE (LAPC) | 2015年

关键词：

antenna isolation; decoupling networks; Multiple input Multiple Output (MIMO); mutual coupling; WIRELESS;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A compact T-shaped network for decreasing the port-to-port coupling between two strongly coupled antennas is investigated. The proposed circuit comprises of a pair of transmission lines followed by the T-shaped lumped element network connected between the two feeds of the antenna. Finally, a simple L-section matching circuit is added to each port to re-tune the input impedance matching. The proposed network gives a dual-resonant decoupling performance achieving isolation levels of 20 dB across 250 MHz bandwidth at 2.4GHz. The length of the transmission line is designed to introduce a trade-off between the decoupling level and bandwidth. This T-shaped network does not significantly decrease the antenna radiation efficiency. The experimental results coincide with the simulations. The decoupled closely spaced antennas could be used for Multiple-input Multiple-Output (MIMO) applications.

引用

页数：4

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