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Mutual coupling reduction in Chinese character‐shaped artistic MIMO antenna
Author(s) -
Zhang Guolin,
Chen Qiang
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32346
Subject(s) - mimo , ground plane , offset (computer science) , physics , center frequency , acoustics , electrical engineering , optics , electronic engineering , antenna (radio) , telecommunications , engineering , computer science , channel (broadcasting) , band pass filter , programming language
In this paper, a Chinese character‐shaped artistic multiple input multiple output (MIMO) antenna with H‐shaped defect ground structure (HDGS) is designed and analyzed. The H‐shaped structures are loaded on the ground along the outer edge of patches to make it a part of the coupling current propagation direction. The two‐element MIMO antenna is placed on the substrate with a separation of only 0.024 λ 0 ( λ 0 is the free‐space wavelength at 2.458 GHz). The designed MIMO antenna without HDGS has 10.4 and 7.2 dB higher isolation than E‐ and H‐plane rectangular array antennas. After loading HDGS, the isolation reaches 23.86 dB at 2.458 GHz, and the center frequency is not offset. The achieved bandwidth is within IEEE 802.11 at a 2.4‐GHz wireless local area network band. Meanwhile, the isolation is higher than 20 dB in the 10‐dB impedance bandwidth (2.447‐2.468 GHz). Moreover, the radiation pattern remained basically unchanged.