EIGENMODE DECOUPLING FOR MIMO LOOP-ANTENNA BASED ON 180Â° COUPLER | Zendy

Shaoli Zuo | Zendy; Yingzeng Yin | Zendy; Zhiya Zhang | Zendy; Weijun Wu | Zendy; JiaoJiao Xie | Zendy

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EIGENMODE DECOUPLING FOR MIMO LOOP-ANTENNA BASED ON 180Â° COUPLER

Author(s) -

Shaoli Zuo,

Yingzeng Yin,

Zhiya Zhang,

Weijun Wu,

JiaoJiao Xie

Publication year - 2011

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl11071109

Subject(s) - decoupling (probability) , mimo , normal mode , loop (graph theory) , physics , acoustics , control theory (sociology) , computer science , mathematics , engineering , telecommunications , vibration , control engineering , combinatorics , channel (broadcasting) , control (management) , artificial intelligence

-A low-cost, high isolation, printed loop-antenna system for multiple-input multiple-output (MIMO) applications in the 2.4 GHz WLAN band is presented. By feeding the orthogonal eigenmodes of the array, port decoupling (S21 < -20 dB) with tightly coupled elements (only 0:07λ separation) is obtained. The orthogonal eigenmodes are realized based on 180° coupler. Then decoupled external ports of the feed network may be matched independently by using conventional matching circuits. With this low-cost and high isolation characteristic, it is very suitable for being embedded inside a wireless access point (AP).

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