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A Low Mutual Coupling Dual-Band MIMO Antenna Based on Symmetrical Complementary Double-Split-Ring Resonators.

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Title: A Low Mutual Coupling Dual-Band MIMO Antenna Based on Symmetrical Complementary Double-Split-Ring Resonators.
Authors: Zheng, Xuemei1 zhengxuemei@neepu.edu.cn, Xing, Jiafu2, Zhang, Tongchao2
Source: Progress in Electromagnetics Research C. 2026, Vol. 168, p66-73. 8p.
Subjects: Electromagnetic coupling, Metamaterials, Antenna design, Multifrequency antennas
Abstract: In this study, a novel symmetrical complementary double-split-ring resonator structure is proposed, operating in the frequency bands of 2.39-2.44 GHz (covering the core 2.4 GHz WLAN band) and 3.45-3.60 GHz (covering a key sub-band of n78 for 5G communications), to reduce the coupling of multiple-input multiple-output (MIMO) antennas within these two frequency bands. To align with the trend of antenna miniaturization, the inter-element spacing is only 0.08λ₀. The measured results show that after loading the metamaterial, the antenna coupling in the operating bands is reduced by 0-10 dB and 8-23 dB, respectively, and the coupling in the two bands is below -17 dB and -27 dB, respectively. The peak gains achieved are 3.12 dBi and 4.51 dBi in the two bands. The ECC is less than 0.02, indicating excellent gain performance and effective decoupling capability of the MIMO antenna. [ABSTRACT FROM AUTHOR]
Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="JN" term="%22Progress+in+Electromagnetics+Research+C%22">Progress in Electromagnetics Research C</searchLink>. 2026, Vol. 168, p66-73. 8p.
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  Label: Abstract
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  Data: In this study, a novel symmetrical complementary double-split-ring resonator structure is proposed, operating in the frequency bands of 2.39-2.44 GHz (covering the core 2.4 GHz WLAN band) and 3.45-3.60 GHz (covering a key sub-band of n78 for 5G communications), to reduce the coupling of multiple-input multiple-output (MIMO) antennas within these two frequency bands. To align with the trend of antenna miniaturization, the inter-element spacing is only 0.08λ₀. The measured results show that after loading the metamaterial, the antenna coupling in the operating bands is reduced by 0-10 dB and 8-23 dB, respectively, and the coupling in the two bands is below -17 dB and -27 dB, respectively. The peak gains achieved are 3.12 dBi and 4.51 dBi in the two bands. The ECC is less than 0.02, indicating excellent gain performance and effective decoupling capability of the MIMO antenna. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.2528/PIERC26021004
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        Text: English
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        PageCount: 8
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      – SubjectFull: Electromagnetic coupling
        Type: general
      – SubjectFull: Metamaterials
        Type: general
      – SubjectFull: Antenna design
        Type: general
      – SubjectFull: Multifrequency antennas
        Type: general
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      – TitleFull: A Low Mutual Coupling Dual-Band MIMO Antenna Based on Symmetrical Complementary Double-Split-Ring Resonators.
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              Text: 2026
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