- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Microwave Engineering and Waveguides
- Metamaterials and Metasurfaces Applications
- Microwave Imaging and Scattering Analysis
- Wireless Body Area Networks
- Antenna Design and Optimization
- Energy Harvesting in Wireless Networks
- Microwave and Dielectric Measurement Techniques
- Electromagnetic wave absorption materials
- Advanced MIMO Systems Optimization
- Ultra-Wideband Communications Technology
- Millimeter-Wave Propagation and Modeling
- Magnetic Properties and Synthesis of Ferrites
- Full-Duplex Wireless Communications
- Acoustic Wave Resonator Technologies
- Geophysical Methods and Applications
- Satellite Communication Systems
- Multiferroics and related materials
- Brain Tumor Detection and Classification
- Indoor and Outdoor Localization Technologies
- Ferroelectric and Piezoelectric Materials
- COVID-19 epidemiological studies
- Anomaly Detection Techniques and Applications
- Advanced Neural Network Applications
Patuakhali Science and Technology University
2016-2025
Daffodil International University
2022-2024
Savitribai Phule Pune University
2022-2024
Bangladesh Agricultural Research Institute
2023
National University of Malaysia
2012-2020
National Space Agency
2013-2014
State Key Laboratory of Building Safety and Built Environment
2014
Abstract Globally, breast cancer is a major reason for female mortality. Due to the limitations of current clinical imaging, researchers are encouraged explore alternative and complementary tools available techniques detect tumor in an earlier stage. This article outlines new, portable, low-cost microwave imaging (MWI) system using iterative enhancing technique imaging. A compact side slotted tapered slot antenna designed The radiating fins modified by etching nine rectangular slots....
This work proposes a compact metasurface (MS)-integrated wideband multiple-input multiple-output (MIMO) antenna for fifth generation (5G) sub-6 GHz wireless communication systems. The perceptible novelty of the proposed MIMO system is its wide operating bandwidth, high gain, lower interelement gap, and excellent isolation within components. radiating patch truncated diagonally with partially ground plane, has been employed enhancing performance. suggested MS integrated single prototype...
A miniaturized antenna employing a negative index metamaterial with modified split-ring resonator (SRR) and capacitance-loaded strip (CLS) unit cells is presented for Ultra wideband (UWB) microwave imaging applications. Four left-handed (LH) (MTM) are located along one axis of the as radiating element. Each cell combines to obtain design architecture that simultaneously exhibits both permittivity permeability, which ensures stable refractive improve performance imaging. The structure,...
A novel, low cost, and comprehensive microwave imaging (MWI) system is presented for the detection of unwanted tumorous cells into human breast. compact metamaterials (MTM) artificial magnetic conductor (AMC) surface-inspired coplanar waveguide fed (CPW-fed) microstrip antenna developed MWI applications. The initial wideband CPW designed by modified oval shape patch half cycle copper stripe line ground. incorporated with two layers uniplanar AMC structure which composed a 5 × array square...
A complementary split-ring resonator (CSRR) based metamaterial is designed and investigated in this paper for microwave applications with effective medium ratio. This CSRR the modification of conventional resonator. Three square resonators (SSRR) are interconnected a strip line as well two splits three applied to increase electrical length coupling effect. The has an impact on extraction permittivity, permeability, refractive index. dimension unit cell 5.5 × mm2 that printed FR4 material. An...
This article presents a metamaterial based on modified asymmetric circular split ring resonator for absorber applications in the microwave regime. (MMA) exhibits four absorption peaks to cover C, X, and Ku band applications. The MMA unit cell is formed low-cost FR4 substrate with electrical dimensions of 0.106 λ0 × λ0, which wavelength, calculated at 4.1 GHz. structured three concentric intercoupled rings obtain maximum 97.9%, 99.1%, 99.5%, 99.95% 4.1, 6.86, 11.3, 13.45 GHz, respectively....
A gap coupled hexagonal split ring resonator (GCHSRR) based metamaterial is presented in this paper for S-band and X-band microwave applications with absorptance. This the amendment of typical split-ring (SRR). Three interconnected resonators are applied a stripline to increase electrical length coupling effect GCHSRR. SRR has an impact on extraction effective parameters such as permittivity, permeability refractive index. The dimension proposed GCHSRR unit cell 10 × mm <sup...
This paper presents the development of an innovative, tunable star-shaped microwave sensor operating at two distinct frequency bands C and X band, optimized for high-sensitivity sensing both solid liquid mediums. The sensor's innovative geometry augments surface interaction with target substances, significantly enhancing response sensitivity. Furthermore, tunability allows to adapt different environments, maximizing detection potential frequencies. research delves into performance when using...
A unique shaped metamaterial sensor is proposed for detecting a wide range of pure and adulterated fuels oils. The functionality the designed structure has been examined both theoretically practically ways, results show that it performs incredibly well. new sample holder built more convenient functioning, attached directly behind constructed structure. In field research on liquids sensing, purpose this work was to present an alternative methodology. CST microwave studio software used test...
A compact antenna is proposed using planar‐patterned metamaterial structures for ultra‐wideband applications. This consists of four unit cells that simultaneously show both negative permeability and permittivity on the triangular patch three rectangular slots partial ground plane fed with a microstrip line. It has wide bandwidth from 3.07 to 19.91 GHz voltage standing wave ratio (VSWR) <2 an average gain 5.62 dBi peak 8.57 because structures. Good agreement between computations...
This paper presents a negative index metamaterial incorporated UWB antenna with an integration of complementary SRR (split-ring resonator) and CLS (capacitive loaded strip) unit cells for microwave imaging sensor applications. consists four along one axis, where each cell incorporates pair. enables design layout that allows both value permittivity permeability simultaneous, resulting in durable to enhance the performance The proposed MTM was designed fabricated on FR4 substrate having...
The combined effort of the Universiti Kebangsaan Malaysia and Kyushu Institute Technology (KYUTECH) to develop a small-satellite antenna is presented in this paper. Microstrip antennas offer an ideal solution satellite communication requirements due their light weight low profile. In paper, compact single-layer coaxial-probe-fed circularly polarized high-gain patch designed for HORYU-IV nanosatellite S-band presented. aims acquire data about high-voltage discharge phenomena Earth orbit...
Microwave breast imaging has been reported as having the most potential to become an alternative or additional tool existing X-ray mammography technique for detecting tumors. antenna sensor performance plays a significant role in microwave system applications because image quality is mostly affected by array properties like number of sensors and size sensors. In this paper, new successful early detection tumor using balanced slotted antipodal Vivaldi Antenna (BSAVA) presented. The designed...
ABSTRACT In this article, a novel semicircular shaped mono pole antenna has been investigated for super wideband (SWB) applications with high bandwidth dimension ratio (BDR). The proposed consists of shape patches and partial trapezoid ground plane. A tapered feed line is precisely connected to semicircle patch, which provides extremely wide impedance greater than ultra‐wideband (UWB). gap between the plane patch also plays vital role achieve bandwidth. Studies are performed using computer...
A compact 3-D stacked patch antenna is presented for microwave head-imaging application. technique utilized to achieve unidirectional radiation pattern, and a folding used resonance at lower frequency, which are the requirements imaging system. Shorting wall introduced minimize overall structure. The proposed frequency 2.65-2.91 GHz with an average gain of 6.6 dBi 2.7 GHz. dimension 25 × 10.5 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Abstract This paper presents a low-profile multi-slotted patch antenna for long term evolution (LTE) and fifth-generation (5G) communication applications. The studied comprised of stepped ground plane. To attain the required operating band, three slots have been inserted within patch. insertion enhances capacitive effect helps prototype to achieve an band ranging from 3.15 5.55 GHz ( S 11 ≤−10 dB), covering N77/N78/N79 sub-6 5G wireless communications LTE bands 22/42/43/46. wideband...
This paper presents a microstrip antenna-based sensor for detecting salt and sugar in water. The patch antenna is low-cost low-profile modeled to transmit receive an electromagnetic signal. presented consists of crescent-shaped slotted partial ground. compact size the 32 mm × 22 mm. High-frequency structure simulator computer simulation technology are used simulate analyze characteristics antenna. achieves 10 dB return loss from 2.50 18 GHz with 6.10 dBi maximum gain, considerable...
In this paper, the design consideration is investigated for a cylindrical system with low-cost and low-loss dielectric materials detection of breast tumor using iteratively corrected delay multiply sum (IC- DMAS) algorithm. Anomaly in tissue one most crucial health issues women all over world today. Emergency medical imaging diagnosis can be harmlessly managed by microwave-based analysis technology. Microwave Imaging (MI) has been proved to reliable monitoring approach that play fundamental...
Abstract This research article presents a design and performance analysis of metamaterial inspired ultra-high frequency (UHF) compact planar patch antenna for the CubeSat communication system that could be smoothly integrated with commercially available 2U Cube Satellite structure onboard subsystem. The proposed consists two layers, one is different width meander line partial ground plane another layer 3 × 2 near-zero-indexed (NZIM) array plane. NZIM has been utilized to minimize coupling...
In this article, a symmetric split ring resonator (SRR) based metamaterial (MTM) is presented that exhibits three resonances of transmission coefficient (S
ABSTRACT In this paper, a new design of ultra‐wideband (UWB) antenna is reported for microwave imaging system aimed to cover the UWB bandwidth from 3.1 10.6 GHz. The structure has very simple Hibiscus petal pattern patch with tapered microstrip fed line and partial trapezoid ground plane. gap between are optimized achieve wide impedance bandwidth. Results show that fractional about 120% 3.04 11 GHz S < −10 dB stable omnidirectional radiation pattern. average gain proposed prototype 5.1...
The design of a compact metamaterial ultra-wideband (UWB) antenna with goal towards application in microwave imaging systems for detecting unwanted cells human tissue, such as cases breast cancer, heart failure and brain stroke detection is proposed. This proposed UWB made four unit cells, where each cell an integration modified split ring resonator (SRR), capacitive loaded strip (CLS) wire, to attain layout that simultaneously exhibits both negative magnetic permeability electrical...
In this paper, the preparation and measurement of a set human breast phantoms for microwave imaging (MBI) as method tumor detection are presented. The developed artificial have realistic dielectric properties. Homogenous most heterogeneous been fabricated based upon 3D structures filled up with different chemical mixtures that imitate various tissue types (skin, healthy fat tissue, glandular tissue) regarding permittivity over ultra-wideband frequency band (3.1-10.6 GHz). primary challenge...
In this paper, a system for microwave breast tumor detection is presented using iteratively corrected coherence factor delay and sum (CF-DAS) algorithm. CF-DAS data independent, which makes it stable in noisy environment. However, adaptive techniques have made significant progress by enhancing the image quality tomography. Thus, novel iterative variant of proposed paper to produce accurate images. The imaging (MI) contains rotatable array nine modified antipodal Vivaldi antennas circular...