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Compact circularly polarized MIMO printed antenna with novel ground structure for wideband applications
Author(s) -
Tiwari Rakesh N.,
Singh Prabhakar,
Kanaujia Binod Kumar,
Kumar Pradeep
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22737
Subject(s) - ground plane , mimo , reflection coefficient , wideband , physics , microstrip , microstrip antenna , optics , electronic engineering , bandwidth (computing) , electrical engineering , telecommunications , antenna (radio) , acoustics , engineering , channel (broadcasting)
In this article, a microstrip line fed 2‐port circularly polarized multiple‐input‐multiple‐output (MIMO) antenna is designed and fabricated. A novel ground structure and radiating patches are used to achieve the circularly polarized radiated field by the MIMO antenna. To improve the isolation between two ports, a meandered U‐shaped narrow metallic strip is placed between the asymmetric Z‐shaped radiating elements. The proposed MIMO design demonstrates the impedance bandwidth (S 11 ≤ −10 dB) of 90.94% (3.04‐8.11 GHz). The axial ratio bandwidth ≤3 dB is found to be 32.10% (4.42‐6.11 GHz). The diversity parameters such as envelope correlation coefficient, diversity gain, mean effective gain, total active reflection coefficient and channel capacity loss are also calculated to make the proposed design more reliable for 5G applications. This antenna is made compact and small which carries the dimension 24 × 24 × 1.6 mm 3 . The entire investigation is first modeled using the simulation software CST Microwave Studio and then verified with the measured results.