Low envelope correlation coefficient, enhanced gain, and suppressed mutual coupling in compact 4-port MIMO microstrip antenna loaded with metasurface

2019 ◽  
Vol 25 (12) ◽  
pp. 4721-4730 ◽  
Author(s):  
Aashish Kumar ◽  
C. S. Rai ◽  
Mukesh Kumar Khandelwal ◽  
Binod Kumar Kanaujia
Keyword(s):  
Correlation Coefficient ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Envelope Correlation

scholarly journals Compact Wideband MIMO Diversity Antenna for Mobile Applications Using Multi-Layered Structure

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1307
Author(s):  
Omer Arabi ◽  
Chan Hwang See ◽  
Atta Ullah ◽  
Nazar Ali ◽  
Bo Liu ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Mutual Coupling ◽  
Multiple Input Multiple Output ◽  
Dielectric Constants ◽  
Impedance Bandwidth ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Diversity Antenna ◽  
Better Than ◽  
Envelope Correlation

A closely packed wideband multiple-input multiple-output (MIMO)/diversity antenna (of two ports) with a small size of less than 18.5 mm by 18.5 mm is proposed for mobile communication applications. The antenna can be orthogonally configured for corner installation or by placing it on a back-to-back structure for compact modules. To enhance the isolation and widen the bandwidth, the antenna is structured with multiple layers having differing dielectric constants. The feeding through a via significantly reduces the ground waves. A multi-fidelity surrogate model-assisted design exploration method is employed to obtain the optimized antenna geometric parameters efficiently. The antenna design was investigated using electromagnetic simulation and a physical realization of the optimal design was then created and subjected to a range of tests. The specific parameters investigated included reflection coefficients, mutual coupling between the input ports, radiation patterns, efficiency and parameters specific to MIMO behavior: envelope correlation coefficient and pattern diversity multiplexing coefficient. It was found that the antenna has an impedance bandwidth of approximately 4 GHz, mutual coupling between input ports of better than −18 dB and an envelope correlation coefficient of less than 0.002 across the operating band. This makes it a good candidate design for many mobile MIMO applications.

scholarly journals NOVEL WEARABLE EAGLE SHAPE MICROSTRIP ANTENNA ARRAY WITH MUTUAL COUPLING REDUCTION

2015 ◽  
Vol 62 ◽  
pp. 87-103 ◽  
Author(s):  
Mohamed Ismail Ahmed ◽  
Esmat Abdel-Fattah Abdallah ◽  
Hadia M. El-Hennawy
Keyword(s):  
Antenna Array ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Microstrip Antenna Array ◽  
Mutual Coupling Reduction

Mutual Coupling and Correlation Coefficient of a Small Antenna Designed to Radiate Directly from AMC

2021 ◽  
Vol 141 (2) ◽  
pp. 86-93
Author(s):  
Hiromichi Yoshikawa ◽  
Nobuki Hiramatsu ◽  
Hiroshi Uchimura ◽  
Masamichi Yonehara
Keyword(s):  
Correlation Coefficient ◽  
Mutual Coupling ◽  
Small Antenna

Implementation of four-port MIMO diversity microstrip antenna with suppressed mutual coupling and cross-polarized radiations

2019 ◽  
Vol 26 (3) ◽  
pp. 993-1000
Author(s):  
Sandeep Sharma ◽  
Mainuddin ◽  
Binod Kumar Kanaujia ◽  
Mukesh Kumar Khandelwal
Keyword(s):  
Microstrip Antenna ◽  
Mutual Coupling

scholarly journals A Compact MIMO Antenna with Inverted C-Shaped Ground Branches for Mobile Terminals

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Zixian Yang ◽  
Hongchun Yang ◽  
Haijuan Cui
Keyword(s):  
Correlation Coefficient ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Planar Antenna ◽  
Mobile Terminals ◽  
Mimo Antenna ◽  
High Isolation ◽  
Operating Band ◽  
Measured Radiation ◽  
Envelope Correlation

A compact printed MIMO antenna for mobile terminals is presented. With two planar antenna elements, the −6 dB impedance bandwidth of 2.32 GHz (1.48–3.8 GHz) is obtained, which covers GSM 1800/1900, UMTS, WLAN, Wimax, S-band, and most of LTE bands. Each antenna element with a small occupation of 15 × 20 mm2consists of a driven strip and a shorted strip. Two inverted C-shaped ground branches are introduced between two elements to improve the isolation. The simulated results are studied and the measured results show that high isolation of more than 18 dB at the entire operating band is achieved. Meanwhile, the impedance performance is also improved by adding the branches. Furthermore, the measured radiation performances and envelope correlation coefficient also demonstrate that the proposed antenna could be a good candidate for mobile terminals.

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