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Armghan A, Patel SK, Lavadiya S, Qamar S, Alsharari M, Daher MG, Althuwayb AA, Alenezi F, Aliqab K. Design and Fabrication of Compact, Multiband, High Gain, High Isolation, Metamaterial-Based MIMO Antennas for Wireless Communication Systems. Micromachines (Basel) 2023; 14:357. [PMID: 36838056 PMCID: PMC9959552 DOI: 10.3390/mi14020357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 01/25/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
We proposed a novel approach based on a complementary split-ring resonator metamaterial in a two-port MIMO antenna, giving high gain, multiband results with miniature size. We have also analyzed a circular disk metasurface design. The designs are also defected using ground structure by reducing the width of the ground plane to 8 mm and etching all other parts of the ground plane. The electric length of the proposed design is 0.5λ × 0.35λ × 0.02λ. The design results are also investigated for a different variation of complementary split-ring resonator ring sizes. The inner and outer ring diameters are varied to find the optimized solution for enhanced output performance parameters. Good isolation is also achieved for both bands. The gain and directivity results are also presented. The results are compared for isolation, gain, structure size, and the number of ports. The compact, multiband, high gain and high isolation design can apply to WiMAX, WLAN, and satellite communication applications.
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Affiliation(s)
- Ammar Armghan
- Department of Electrical Engineering, College of Engineering, Jouf University, Sakaka 72388, Saudi Arabia
| | - Shobhit K. Patel
- Department of Computer Engineering, Marwadi University, Rajkot 360003, India
| | - Sunil Lavadiya
- Department of Information and Communication Technology, Marwadi University, Rajkot 360003, India
| | - Salman Qamar
- Department of Electrical Engineering, Qurtuba University of Science and IT, Dera Ismail Khan 29050, Pakistan
| | - Meshari Alsharari
- Department of Electrical Engineering, College of Engineering, Jouf University, Sakaka 72388, Saudi Arabia
| | - Malek G. Daher
- Physics Department, Islamic University of Gaza, Gaza P.O. Box 108, Palestine
| | - Ayman A. Althuwayb
- Department of Electrical Engineering, College of Engineering, Jouf University, Sakaka 72388, Saudi Arabia
| | - Fayadh Alenezi
- Department of Electrical Engineering, College of Engineering, Jouf University, Sakaka 72388, Saudi Arabia
| | - Khaled Aliqab
- Department of Electrical Engineering, College of Engineering, Jouf University, Sakaka 72388, Saudi Arabia
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Khalid S, Abbas WB, Kim HS, Niaz MT. Evolutionary Algorithm Based Capacity Maximization of 5G/B5G Hybrid Pre-Coding Systems. Sensors (Basel) 2020; 20:s20185338. [PMID: 32957686 PMCID: PMC7570718 DOI: 10.3390/s20185338] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/09/2020] [Accepted: 09/15/2020] [Indexed: 11/16/2022]
Abstract
Hybrid pre-coding strategies are considered as a potential solution for combating path loss experienced by Massive MIMO systems operating at millimeter wave frequencies. The partially connected structure is preferred over the fully connected structure due to smaller computational complexity. In order to improve the spectral efficiency of a partially connected hybrid pre-coding architecture, which is one of the requirements of future 5G/B5G systems, this work proposes the application of evolutionary algorithms for joint computation of RF and the digital pre-coder. The evolutionary algorithm based scheme jointly evaluates the RF and digital pre-coder for a partially connected hybrid structure by taking into account the current RF chain for computations and therefore it is not based on interference cancellation from all other RF chains as in the case of successive interference cancellation (SIC). The evolutionary algorithm, i.e., Artificial Bee Colony (BEE) based pre-coding scheme outperforms other popular evolutionary algorithms as well as the SIC based pre-coding scheme in terms of spectral efficiency. In addition, the proposed algorithm is not overly sensitive to variations in channel conditions.
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Affiliation(s)
- Salman Khalid
- Department of Electrical Engineering, National University of Computer and Emerging Science, Islamabad 44000, Pakistan; (S.K.); (W.B.A.)
| | - Waqas Bin Abbas
- Department of Electrical Engineering, National University of Computer and Emerging Science, Islamabad 44000, Pakistan; (S.K.); (W.B.A.)
| | - Hyung Seok Kim
- Department of Intelligent Mechatronics Engineering, Sejong University, Seoul 05006, Korea
- Correspondence: (H.S.K.); (M.T.N.)
| | - Muhammad Tabish Niaz
- Department of Intelligent Mechatronics Engineering, Sejong University, Seoul 05006, Korea
- Correspondence: (H.S.K.); (M.T.N.)
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Al-Sadoon MAG, Ali NT, Dama Y, Zuid A, Jones SMR, Abd-Alhameed RA, Noras JM. A New Low Complexity Angle of Arrival Algorithm for 1D and 2D Direction Estimation in MIMO Smart Antenna Systems. Sensors (Basel) 2017; 17:s17112631. [PMID: 29140313 PMCID: PMC5713173 DOI: 10.3390/s17112631] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/05/2017] [Accepted: 11/09/2017] [Indexed: 11/16/2022]
Abstract
This paper proposes a new low complexity angle of arrival (AOA) method for signal direction estimation in multi-element smart wireless communication systems. The new method estimates the AOAs of the received signals directly from the received signals with significantly reduced complexity since it does not need to construct the correlation matrix, invert the matrix or apply eigen-decomposition, which are computationally expensive. A mathematical model of the proposed method is illustrated and then verified using extensive computer simulations. Both linear and circular sensors arrays are studied using various numerical examples. The method is systematically compared with other common and recently introduced AOA methods over a wide range of scenarios. The simulated results show that the new method has several advantages in terms of reduced complexity and improved accuracy under the assumptions of correlated signals and limited numbers of snapshots.
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Affiliation(s)
- Mohammed A. G. Al-Sadoon
- School of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK; (M.A.G.A.-S.); (S.M.R.J.); (J.M.N.)
- Department of Communication and Informatics Engineering, Basra University College of Science and Technology, Basra 61004, Iraq;
| | - Nazar T. Ali
- School of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK; (M.A.G.A.-S.); (S.M.R.J.); (J.M.N.)
- Department of Electrical and Computer Engineering, Khalifa University, Abu Dhabi 127788, UAE;
| | - Yousf Dama
- School of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK; (M.A.G.A.-S.); (S.M.R.J.); (J.M.N.)
- Department of Electrical Engineering, Najah National University, Omar Ibn Al-Khattab St., 44859 Nablus, Palestine;
| | - Abdulkareim Zuid
- School of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK; (M.A.G.A.-S.); (S.M.R.J.); (J.M.N.)
- Department of Communication and Informatics Engineering, Basra University College of Science and Technology, Basra 61004, Iraq;
| | - Stephen M. R. Jones
- School of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK; (M.A.G.A.-S.); (S.M.R.J.); (J.M.N.)
| | - Raed A. Abd-Alhameed
- School of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK; (M.A.G.A.-S.); (S.M.R.J.); (J.M.N.)
- Correspondence: ; Tel.: +44-0-127-4234-033
| | - James M. Noras
- School of Engineering and Informatics, University of Bradford, Bradford BD7 1DP, UK; (M.A.G.A.-S.); (S.M.R.J.); (J.M.N.)
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