Article
Optics
Swarup Das, Debasis Mitra, Sekhar Ranjan Bhadra Chaudhuri
Summary: A microstrip line fed circular fractal curve loaded circular shaped patch antenna is proposed for Super Wide Band (SWB) operation in THz frequency domain. The design achieves impedance matching over the entire operating frequency band by using a circular shaped slot and a circular shaped partial ground plane, with the advantage of highest ratio impedance bandwidth and smallest physical dimension among previously reported SWB antenna structures for THz applications.
Article
Computer Science, Information Systems
Shuvashis Dey, Md Shamsul Arefin, Nemai Chandra Karmakar
Summary: This paper discusses the design and practical implementation of a novel Super Wide Band (SWB) antenna on a flexible substrate. The antenna operates in a wide frequency range and is suitable for various wireless applications including 5G and the Internet of Things (IoT). The simulated performance of the antenna is analyzed and experimental validation is provided through measurement using a network analyzer.
Article
Multidisciplinary Sciences
Mohammadreza Rohaninezhad, Meysam Jalali Asadabadi, Changiz Ghobadi, Javad Nourinia
Summary: In this study, a transparent super wideband CPW antenna was designed and built with the combination of solar panels for use in wireless communication equipment and systems that require mobile power. The antenna demonstrated high transparency and conductivity, and performed well in terms of frequency range and performance parameters testing.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Electrical & Electronic
Kayhan celik
Summary: This paper presents a circular fractal ring monopole antenna with dual band-notched properties for ultra-wideband (UWB) hardware. The antenna consists of four nested crescent-shaped rings, a tapered feeding line, and a semicircular ground plane. It operates efficiently in the range of 2.63 GHz-11.66 GHz, with notched bands at 3.15 GHz-3.66 GHz (WiMAX) and 4.9 GHz-5.9 GHz (WLAN). The compact antenna has a maximum gain of approximately 4 dB and is implemented using a flame-retardant material.
Article
Mathematics, Interdisciplinary Applications
Omaima Benkhadda, Mohamed Saih, Sarosh Ahmad, Ahmed Jamal Abdullah Al-Gburi, Zahriladha Zakaria, Kebir Chaji, Abdelati Reha
Summary: This paper introduces a new tri-wideband fractal antenna for use in wireless communication applications. The antenna has a Sierpinski hexagonal-shaped radiating element and a partial ground plane loaded with three rectangular stubs and three rectangular slits. According to the measurements, the designed antenna resonates throughout the frequency ranges of 2.19-4.43 GHz, 4.8-7.76 GHz, and 8.04-11.32 GHz.
FRACTAL AND FRACTIONAL
(2023)
Article
Engineering, Electrical & Electronic
Yong Yang, Yong-Ling Ban, Qingling Yang, Ji-Wei Lian, Qiang Sun, Gang Wu
Summary: A wide-angle scanning circularly polarized (CP) antenna array based on a novel polarizer is proposed in this paper. The proposed hybrid polarizer converts a linear polarization (LP) substrate integrated waveguide (SIW) slot antenna array into a CP antenna array. By taking advantage of the complementary characteristics of the metasurface polarizer and dipole array polarizer for different scanning angles, the proposed hybrid polarizer achieves good impedance matching characteristics in a wide scanning angle range.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Swarup Das, Debasis Mitra, Sekhar Ranjan Bhadra Chaudhuri
Summary: This paper presents a compact Super Wide Band four element MIMO antenna design for Terahertz applications, featuring good antenna performance and impedance bandwidth.
NANO COMMUNICATION NETWORKS
(2021)
Article
Chemistry, Analytical
Ziyang Huang, Hao Wu, Seedahmed S. Mahmoud, Qiang Fang
Summary: An implantable stacked planar inverted-F antenna for biotelemetric communication in the 402-405 MHz MICS frequency band was designed, with a compact size and high performance characteristics.
Article
Engineering, Electrical & Electronic
Zi Long Ma, Chu Wei Zhang, Yong Mei Pan, Quan Xue
Summary: This communication presents a novel bidirectional same-sense circularly polarized antenna that is based on bifilar helices. The antenna consists of two conical bifilar helices with a back-to-back configuration and a wideband feeding network. The proposed antenna exhibits superior bandwidth performance and high gain due to the wide band feature of the bifilar helices and the feeding network.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Telecommunications
Kalyan S. Kola, Anirban Chatterjee
Summary: This paper introduces a new fractal microstrip patch antenna for DSRC service band, with good circular polarization and S-11 characteristics. The designed antenna performs excellently at a frequency of 5.91 GHz, covering the entire DSRC band, with experimental results showing excellent agreement with simulations.
WIRELESS PERSONAL COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Anindita Bhattacharjee, Anirban Karmakar, Anuradha Saha, Diptendu Bhattacharya
Summary: A new compact ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna with band notch characteristics is presented in this study, which shows wide impedance bandwidth and good interference suppression within the operating frequency range of 3.1-20 GHz. The antenna design incorporates unique elements such as T-shaped stubs and Minkowski fractal shape elements on the ground plane to reduce coupling between antenna elements and achieve band notch at 5.45 GHz.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2021)
Article
Computer Science, Information Systems
Xiao Liu, Anqi Li, Zhongjun Yu, Ting Lv, Meng Li, Zhen Zhang
Summary: A dual K-band circularly polarized antenna with high broadband, broadband beam, wide axial ratio bandwidth and high radiation efficiency is designed in this paper. A multimode waveguide cavity structure is used to design an aperture antenna, which is fed to waveguide circular polarizer by slot coupling in order to achieve circular polarization radiation. The antenna consists of two K-band circularly polarized antenna units, and the spacing between the two units is 9.5 mm, which is fed by a K-band T/R module.
CMC-COMPUTERS MATERIALS & CONTINUA
(2023)
Article
Multidisciplinary Sciences
Deepti Sharma, Binod Kumar Kanaujia, Sachin Kumar, Karumudi Rambabu, Ladislau Matekovits
Summary: Cardiovascular diseases (CVDs) are a major cause of death worldwide. This study demonstrates the use of Internet of things (IoT) technology enabled with industrial, scientific, and medical (ISM) bands (2.45 and 5.8 GHz) to allow pacemakers to remotely share heart health data with medical professionals.
SCIENTIFIC REPORTS
(2023)
Article
Computer Science, Information Systems
Ismail Akdag, Cem Gocen, Merih Palandoken, Adnan Kaya
Summary: In this article, a novel UHF RFID reader antenna is proposed and experimentally investigated. The antenna design consists of three layers, achieving excellent RF performance and demonstrating its technical potential in RFID-based wireless networks.
Article
Computer Science, Information Systems
Kechen Liu, Dapeng Sun, Tao Su, Xu Zheng, Chaobo Li
Summary: This paper proposes a solution to the problem of small gain and narrow frequency range in miniature antennas by employing a fractal repeating array structure and a double-layer folding antenna structure. By using a flexible material polyimide substrate with a thickness of only 0.1 mm, the proposed antenna achieves high gain and expansive frequency range within a diminutive size. The antenna's dimensions are 0.04 λ(0) x 0.026 λ(0) (λ(0) @ 2.4 GHz) and it demonstrates resonance across multiple frequencies, with a maximum gain of 1.65 dBi and 4.37 dBi.
Article
Information Science & Library Science
Mohammad Tariqul Islam, Md. Shamim Talukder, Abul Khayer, A. K. M. Najmul Islam
Summary: This study aims to determine the predictors influencing the continuance usage intention of Open Government Data (OGD) technologies. The findings reveal that performance expectancy, effort expectancy, social influence, and facilitating conditions directly affect users' satisfaction, and satisfaction and facilitating conditions are statistically significant towards continuance usage intention of OGD technologies.
VINE JOURNAL OF INFORMATION AND KNOWLEDGE MANAGEMENT SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Liton Chandra Paul, Himel Kumar Saha, Tithi Rani, Rezaul Azim, Mohammad Tariqul Islam, Md Samsuzzaman
Summary: This study presents the design of a semi-circular patch antenna for WiMAX and WiFi-5/6 communications. The antenna has a small footprint but achieves a wide frequency span, with two sharp resonances contributing to the desired frequency range. The fabricated antenna has been tested and meets the bandwidth requirements for multiple communication standards, with good gain and efficiency.
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
(2023)
Article
Chemistry, Physical
Md. Salah Uddin Afsar, Mohammad Rashed Iqbal Faruque, Sabirin Abdullah, Mohammad Tariqul Islam, Mayeen Uddin Khandaker, K. S. Al-Mugren
Summary: This research article presents a new compact metamaterial in the shape of a power tiller wheel with four resonance peaks and negative permittivity in specific frequency ranges. The proposed metamaterial unit cell has a small electrical dimension and high effective medium ratio. Computer simulation technology confirms the performance of the metamaterial structure, and its potential applications include wireless communication in S-, C-, and X-bands.
Article
Chemistry, Physical
Shihabun Sakib, Ahasanul Hoque, Sharul Kamal Bin Abdul Rahim, Mandeep Singh, Norsuzlin Mohd Sahar, Md. Shabiul Islam, Mohamed S. Soliman, Mohammad Tariqul Islam
Summary: This paper presents a central spiral split-rectangular-shaped metamaterial absorber surrounded by a polarization-insensitive ring resonator for s-band applications. The absorber achieves a rated absorption of 99.9% at 3.1 GHz with a three-layer structure using copper and FR-4 substrate. The unit cell acts as an epsilon negative (ENG) metamaterial absorber with negative permittivity and positive permeability at 3.1 GHz.
Article
Chemistry, Analytical
Muhammad Hafizh, Md Mohiuddin Soliman, Yazan Qiblawey, Muhammad E. H. Chowdhury, Mohammad Tariqul Islam, Farayi Musharavati, Sakib Mahmud, Amith Khandakar, Mohammad Nabil, Erfan Zal Nezhad
Summary: In this paper, a surface acoustic wave (SAW) sensor was proposed for hip implant-loosening detection applications. Numerical and finite element analyses demonstrated the feasibility of using the SAW sensor for detecting loosening at two locations on the implant. Loading simulations showed that the stresses experienced by the sensor were below the yield strengths.
Article
Chemistry, Physical
Md. Mhedi Hasan, Mohammad Tariqul Islam, Sharul Kamal Abdul Rahim, Touhidul Alam, Hatem Rmili, Ahmed Alzamil, Md. Shabiul Islam, Mohamed S. Soliman
Summary: This article presents a compact wideband four-port MIMO antenna system integrated with a wideband metamaterial (MM) for high gain in sub-6 GHz NR 5G communication. The proposed MIMO system has orthogonally positioned antennas with a short interelement distance, confirmed by its compact size and wideband characteristics. A fractal slotted unique patch with a DGS and a wideband MMR are utilized to enhance the performance of the MIMO system. The designed MIMO system exhibits high gain, improved diversity, and radiation characteristics.
Article
Chemistry, Physical
Md Mohiuddin Soliman, Muhammad E. H. Chowdhury, Mohammad Tariqul Islam, Farayi Musharavati, Sakib Mahmud, Muhammad Hafizh, Mohamed Arselene Ayari, Amith Khandakar, Mohammad Kaosar Alam, Erfan Zal Nezhad
Summary: This study aims to evaluate the performance parameters of smooth and novel spiral head-stem trunnion types under dynamic loading conditions. The results showed that the spiral trunnion achieved superior fixation stability with a shorter sliding distance and a lower wear rate than the smooth trunnion, indicating its potential recommendation for future hip implant systems.
Article
Medicine, General & Internal
Asraf Mohamed Moubark, Luzhen Nie, Mohd Hairi Mohd Zaman, Mohammad Tariqul Islam, Mohd Asyraf Zulkifley, Mohd Hafiz Baharuddin, Zainab Alomari, Steven Freear
Summary: In ultrasound B-mode imaging, the axial resolution is commonly determined by the duration or bandwidth of an excitation signal. The proposed FMAS method relies on autocorrelation technique and provides higher frame rate and less computational complexity, while improving contrast ratio and resolution. It has been demonstrated through simulations, experimental measurements and in vivo studies, and also applied in a practical biomedical imaging application to accelerate the segmentation process.
Article
Mathematics
Md. Mottahir Alam, Ahteshamul Haque, Asif Irshad Khan, Samir Kasim, Amjad Ali Pasha, Aasim Zafar, Kashif Irshad, Anis Ahmad Chaudhary, Md. Samsuzzaman, Rezaul Azim
Summary: This paper proposes a tungsten tantalum alloy with silicon dioxide (WTa-SiO2) ceramic layer-based solar absorber system with two different metasurfaces to enhance absorptivity and boost the solar absorber efficacy. The absorbance is improved by adjusting the resonator thickness and material thickness, and the maximum visible light absorption is achieved by the suggested solar filter design. The proposed method demonstrates superior prediction performance with an absorption prediction efficiency of 99.8% compared to the existing methods.
JOURNAL OF MATHEMATICS
(2023)
Article
Engineering, Electrical & Electronic
Mohammad Lutful Hakim, Touhidul Alam, Mohammad Tariqul Islam
Summary: This letter presents a miniaturized conformal dual-band mm-wave frequency selective surface (FSS) for fifth-generation (5G) electromagnetic interference(EMI) shielding applications. The proposed FSS exhibits wide stopbands in the mm-wave 5G frequency spectrum and has high oblique incident angle stable filter behavior up to 60 degrees.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Mohammad Tauheed Ahmad, Md. Moddassir Alam, Mohd Imran, Rezaul Azim, Md. Mottahir Alam
Summary: A novel hybrid nanomaterial was designed for pressure sensing applications in the biological field. Experimental analysis showed that the designed material has high sensitivity and potential to be a biosensor in wearable healthcare monitoring.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Analytical
Fazdliana Samat, Mandeep Singh Jit Singh, Abdulmajeed Al-Jumaily, Mohammad Tariqul Islam
Summary: Site diversity is an effective method to recover signal loss in heavy downpours, especially in tropical regions. Duplicated links at diverse sites are used to route the least-attenuated signal to the prime site. Factors such as site-separation distance, elevation angle, baseline angle, and signal frequency determine the diversity gain, while the impact of rain-cell span and wind on the gain is still under investigation.
Article
Computer Science, Information Systems
Mohamad Yafik Ihtisyam Yazid, Mohd Hafiz Baharuddin, Mohammad Shahidul Islam, Mohammad Tariqul Islam, Ali F. Almutairi
Summary: This paper presents the development of an antipodal Vivaldi antenna with a fractal slot, which has potential applications in multisensory systems for head stroke imaging. The fractal slot is utilized to enhance the antenna's directivity, bandwidth, and gain. The research aims to design and optimize a compact Vivaldi antenna with the fractal slot for detecting stroke in the human head. The proposed antenna achieves a wide bandwidth of 1.44 GHz (2.35 GHz to 3.79 GHz) and a maximum gain of 7.35 dBi, and it meets the requirements for microwave imaging procedures.
Article
Computer Science, Information Systems
Sadia Mostofa, Mardina Abdullah, Siti Aminah Bahari, Mohammad Tariqul Islam
Summary: This study investigates the impacts of severe geomagnetic storms in 2012 on large-scale ionospheric anomalies in the equatorial region of Malaysia. The research finds that the disturbances in the ionosphere caused by geomagnetic storms persist before and after the actual storm period. It highlights the importance of having a dedicated ionospheric weather index to evaluate and predict the impact of space weather storms, enhancing the precision and reliability of vulnerable radio systems.
