A Self-Decoupling Method for MIMO Antenna Array Using Characteristic Mode of Ground Plane

A self-decoupling method for the multiinput multioutput (MIMO) antenna array is investigated. This method is based on the specific characteristic mode (CM) of the ground plane, which features two or multiple parallel null-field regions. By using one antenna element to excite such a mode on the groun...

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Published inIEEE transactions on antennas and propagation Vol. 71; no. 3; pp. 2126 - 2135
Main Authors Lai, Qi Xuan, Pan, Yong Mei, Zheng, Shao Yong
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
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Abstract A self-decoupling method for the multiinput multioutput (MIMO) antenna array is investigated. This method is based on the specific characteristic mode (CM) of the ground plane, which features two or multiple parallel null-field regions. By using one antenna element to excite such a mode on the ground plane while placing the other one/ones in a way that their feed points are located in the null-field region, very high isolation between antenna elements can be obtained naturally. To validate the feasibility of this decoupling method, a <inline-formula> <tex-math notation="LaTeX">1\times </tex-math></inline-formula> 2 microstrip patch antenna (MPA) array is simulated, fabricated, and measured. It has been shown that a maximum isolation level of 57 dB is achieved without any extra decoupling structure. Moreover, this self-decoupling method shows strong universality and extensibility, and it applies to different types of antenna arrays and multielement arrays.
AbstractList A self-decoupling method for the multiinput multioutput (MIMO) antenna array is investigated. This method is based on the specific characteristic mode (CM) of the ground plane, which features two or multiple parallel null-field regions. By using one antenna element to excite such a mode on the ground plane while placing the other one/ones in a way that their feed points are located in the null-field region, very high isolation between antenna elements can be obtained naturally. To validate the feasibility of this decoupling method, a <inline-formula> <tex-math notation="LaTeX">1\times </tex-math></inline-formula> 2 microstrip patch antenna (MPA) array is simulated, fabricated, and measured. It has been shown that a maximum isolation level of 57 dB is achieved without any extra decoupling structure. Moreover, this self-decoupling method shows strong universality and extensibility, and it applies to different types of antenna arrays and multielement arrays.
A self-decoupling method for the multiinput multioutput (MIMO) antenna array is investigated. This method is based on the specific characteristic mode (CM) of the ground plane, which features two or multiple parallel null-field regions. By using one antenna element to excite such a mode on the ground plane while placing the other one/ones in a way that their feed points are located in the null-field region, very high isolation between antenna elements can be obtained naturally. To validate the feasibility of this decoupling method, a [Formula Omitted] 2 microstrip patch antenna (MPA) array is simulated, fabricated, and measured. It has been shown that a maximum isolation level of 57 dB is achieved without any extra decoupling structure. Moreover, this self-decoupling method shows strong universality and extensibility, and it applies to different types of antenna arrays and multielement arrays.
Author Zheng, Shao Yong
Pan, Yong Mei
Lai, Qi Xuan
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Snippet A self-decoupling method for the multiinput multioutput (MIMO) antenna array is investigated. This method is based on the specific characteristic mode (CM) of...
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SubjectTerms Antenna arrays
Antenna feeds
Characteristic mode analysis (CMA)
Couplings
Decoupling method
Dipole antennas
Ground plane
MIMO communication
multiinput multioutput (MIMO) antenna
Mutual coupling
Patch antennas
Resonant frequency
self-decoupling
Title A Self-Decoupling Method for MIMO Antenna Array Using Characteristic Mode of Ground Plane
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