Investigations on a compact self‐isolated flag‐shaped slotted MIMO antenna for triple‐band applications

Author:

Rekha S.1ORCID,Let G. Shine2ORCID,Radha S.3,Lavanya P.4,Rajasekhar T.1,Chand S. Ravi1

Affiliation:

1. Department of ECE, School of Engineering Nalla Narasimha Reddy Education Society's Group of Institution Integrated campus Hyderabad Telangana India

2. Department of ECE Karunya Institute of Technology and Sciences Coimbatore Tamil Nadu India

3. Department of ECE Chaitanya Bharathi Institute of Technology Hyderabad Telangana India

4. Department of ECE Sreenidhi Institute of Science and Technology Hyderabad Telangana India

Abstract

SummaryA compact flag‐shaped slotted multiple input multiple output (MIMO) antenna is deliberated in the article for triple‐band applications. The flag‐shaped slotted antenna is built with the help of four radiating patches having rectangular slots and disconnected ground structures. The suggested flag‐shaped slotted antenna can operate in the key frequencies of 2.4, 3.5, and 5 GHz. The antenna elements are oriented orthogonally with each other, such that no external decoupling structures are required to provide isolation. The complete size of the four‐element MIMO is 30*30*1.6 mm3. The minimum isolation between the four flag‐shaped slotted elements is −61, −55, and −47 dB in the operating frequency band of 2.3–2.8 GHz, 3.4–3.9 GHz, and 4.5–5.6 GHz, respectively. The simulated and measured results agree with each other, and they have stable radiation and gain. The MIMO performance parameters are measured, and it is noticed that the envelope correlation coefficient is lower than 0.04 and the diversity gain is 9.99 dB in the considered working frequency bands. The proposed flag‐shaped slotted MIMO is appropriate for WLAN, 5G sub‐6 GHz, and ISM wireless applications.

Publisher

Wiley

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