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73 articles for “microwave”
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A Microstrip Rat-Race Coupler for Narrow-Band Operation in the X-Band
Abstract: This paper proposes, designs, describes, analyses, and simulates a novel microstrip rat-race coupler for narrow-band operations in the X-band (8 GHz to 12 GHz), namely the 9.5 GHz to 10.3 GHz sub-band. This proposed four-port passive microwave device was realized utilizing microstrip technology with pure copper (lossy) being used as a metal in the conducting layers (transmission and ground plates) and Rogers TMM6 (lossy) being used in the dielectric layer. …
Published in International Journal of Microwave Engineering and Technology · Vol. 7, Issue 1, 2021 · pp. 18–22 Read article
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Effects of Introducing Slots in Rectenna
Abstract: Wireless power is turning out to be a promising technology in near future. This would not only be an alternative to batteries and wired supply, but also protect our environment from the harmful effects of batteries. In this paper analysis of introducing slots in the rectenna is studied. An experimental RF energy harvesting system to transmit wireless powers using microwaves is designed and then effects of slot loading on the …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 1, Issue 1, 2015 · pp. 32–38 Read article
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Design and Analysis of Metal-Organic Frameworks for Gas Adsorption and Storage
Abstract: Metal-Organic Frameworks (MOFs) represent a class of highly porous materials formed by the coordination of metal ions with organic linkers, exhibiting exceptional potential for gas storage applications due to their high surface area, tunable pore sizes, and structural versatility. The synthesis and characterization of MOFs intended for the effective storage of gases like carbon dioxide, methane, and hydrogen are the main topics of this work. Solvothermal Hectic strategies, including solvothermal, …
Published in International Journal of Metallurgy and Alloys · Vol. 10, Issue 1, 2024 · pp. 25–30 Read article
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Efficiency Improvements in Long-Distance Wireless Power Transmission
Abstract: The quest for efficient and flexible energy transfer has given rise to Wireless Power Transmission (WPT) technology, which allows the transmission of electrical energy from power source to consuming device deprived of physical connectors. This transformative technology has garnered significant responsiveness due to its possible applications across various domains, including consumer electronics, electric vehicles, medical devices, and industrial systems. With advancements in resonant inductive coupling, microwave transmission, and laser-based systems, …
Published in International Journal of Electrical Power System and Technology · Vol. 10, Issue 1, 2024 Read article
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Schemes of Trace Selenium Nanoparticles on Earth
Abstract: This article is written about resources of selenium compatible with dosage-wise recovery from nature. Selenium (Se) above trace is toxic to human beings. The plant is the source of Se based on differential stages in botanical ethics from various parts of plants. Selenium found in nature as selenite, selenite, selenides, and seleno-proteins in plants. Se nanospheres related to a size considered as of importance in industry and biology acts. Antimicrobial …
Published in International Journal of Chemical Separation Technology · Vol. 7, Issue 1, 2021 Read article
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Review on Production of Activated Carbon from Agricultural Biomass Waste
Abstract: Agricultural biomass waste is one of the main residue largely generated in the environment and was used as precursor for the synthesis of activated carbon as adsorbents, support on catalyst, electric charge storage, micro pore structure, high adsorption capacity material. Recently, many research paper can be found on particular biomass feedstock and activation technique to produce activated carbon. Consequently, main focus should be taken to the relevance those precursor effectiveness …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 7, Issue 2, 2021 · pp. 26–37 Read article
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Impact of Microcrack Healing Techniques on Resilient behavior of Asphalt Concrete
Abstract: Concentrated efforts on the development of innovative materials and techniques for asphalt pavement repair are going on, many of them related to crack healing. Flexible pavement usually practices repeated loading and environmental impacts and suffers distresses throughout its service life. Microcracks initiates and can heal itself under controlled conditions. In this Concentrated efforts on thedevelopment of innovative materials and techniquesfor asphalt pavement repair are going on, many of them related …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 6, Issue 1, 2020 · pp. 33–41 Read article
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A Compact Sector-slotted Circular shaped Filtenna with Enhanced bandwidth
Abstract: This paper presents the designing, simulation and fabrication of a compact Sector-slotted circular shaped filtenna. A Filtenna is designed by integrating the two-pole Butterworth Bandpass filter and the sector-slotted circular shaped patch antenna. This combination of filter and antenna results into compactness of the microwave components and also enhancing the overall performance of the system. The Sector-slotted circular shaped patch antenna is substituted on second port and second resonator. A …
Published in International Journal of Microwave Engineering and Technology · Vol. 3, Issue 2, 2017 · pp. 7–13 Read article
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Design and Analysis of Microstrip Filtenna for 2.4 GHz Applications and Measurement of SAR over Human Head Model
Abstract: ABSTRACTMultifunctional ability of modern devices leads to wideband frequency characteristics. A microstrip antenna is a considerable narrowband antenna and a method to increase its bandwidth as well as adding filtering property is studied. In this study models are developed for 2.4 GHz band applications using filtering antenna concept that increases the bandwidth of the antenna and allows it to work as a filter to improve its frequency selectivity. In the …
Published in International Journal of Microwave Engineering and Technology · Vol. 5, Issue 2, 2019 · pp. 30–42 Read article
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A Multiband Ultra Wideband Antenna for Wireless Applications
Abstract: ABSTRACTThis paper proposes a compact and low-priced antenna that operates in Ultra Wide Band (UWB) at X-band and C-band for short-range communication applications. The frequency band ranging 3.1 GHz to 10.6 GHz is allocated to ultra-wideband. The values of VSWR and return loss for this antenna are less than 1.5 and -10db respectively. The L shaped slot create a band at 10.022 GHz and the ring-shaped patch create bands at …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 6, Issue 1, 2020 · pp. 1–7 Read article
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Advancements of Carbon Quantum Dot and their use in Biomedical
Abstract: Carbon quantum dots (CQDs) have gained significant attention in the biomedical field due to their unique physicochemical properties and potential biomedical applications. In this review, we provide a comprehensive overview of recent advancements in CQD synthesis, functionalization, and their use in biomedical applications. Firstly, we discuss various synthetic methods used to produce CQDs, including microwave-assisted synthesis, hydrothermal synthesis, and electrochemical synthesis. Next, we delve into the functionalization of CQDs, which …
Published in International Journal of Nanomaterials and Nanostructures · Vol. 8, Issue 2, 2022 · pp. 28–33 Read article
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Studies of meta-materials
Abstract: AbstractMeta-materials are artificial composites designed to operate electromagnetic property. Properties of wave nature manipulation have originated fashioned fabrication. This has to perform as rigorous as subjected under adoption specific optical or microwave or acoustic provision. Fabrication has precision formof shape, geometry, size, orientation and arrangement of materials.Applicationof meta-materialsincludes super resolution imaging and optical as well acoustic sensing. Decay, separate and couple among as split transverse electric and magnetic to that …
Published in International Journal of Composite Materials and Matrices · Vol. 6, Issue 2, 2020 · pp. 47–52 Read article
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General and Organic Chemistry Laboratory Experiments for Science, Pre-medical, and Pharmacy Students – Chapter V: Organic Synthesis
Abstract: Organic synthesis can be classified into many types, including simple one-step synthesis, multi-step, one-pot, microwave, or green synthesis. Each type of synthesis takes place through a specific pathway depending on reactants involved, the reaction conditions, the catalyst, the protection group, and the duration of the reaction. In some cases, the required compound can be prepared by more than one procedure, and an expert chemist prefers the procedure by which the …
Published in International Journal of Analytical and Applied Chemistry · Vol. 12, Issue 2, 2026 · pp. 8–16 Read article
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Remote Sensing Technologies for Weather Forecasting: Techniques, Uses, andAssessment
Abstract: Remote sensing has become an important tool for modern weather forecasting since it lets us see the Earth's atmosphere and surface all the time and on a huge scale. Remote sensing uses satellites and sensors to collect data in real time on important weather variables like temperature, humidity, cloud cover, precipitation patterns, and atmospheric motion. These numbers are used in numerical weather prediction models to make forecasts more accurate and …
Published in International Journal of Microwave Engineering and Technology · Vol. 12, Issue 1, 2026 · pp. 25–34 Read article
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Chemical Synthesis, Structural Characterization and Solid-State Chemistry of NiₓCo₁₋ₓFe₂O₄ Ferrite Oxides
Abstract: Ferrite materials have attracted significant attention in recent decades due to their remarkable magnetic, electrical, and catalytic properties. Spinel ferrites, generally represented by the formula MFe₂O₄ (where M denotes a divalent metal ion such as Ni²⁺ or Co²⁺), have attracted significant attention due to their versatile applications in areas including magnetic storage, microwave absorption, sensing technologies, transformers, and catalysis. . In particular, nickel–cobalt mixed ferrites (NiₓCo₁₋ₓFe₂O₄) are of considerable interest …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 1, 2026 · pp. 1–9 Read article
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AI-Optimized Reconfigurable Microstrip Bandpass Filters for DynamicSpectrum Access in 6G Networks
Abstract: The evolution toward sixth generation (6G) wireless networks introduces unprecedented demands on spectral efficiency, ultra-low latency, and real-time adaptability to dynamic radio environments. Central to this transformation is the requirement for intelligent, spectrum-agile radio front ends that can seamlessly operate across heterogeneous frequency bands. Dynamic Spectrum Access (DSA) addresses this challenge by enabling transceivers to autonomously detect, evaluate, and utilize the most suitable spectrum opportunities. The realization of DSA in …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 2, 2025 · pp. 30–38 Read article
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Right Hand Circularly Polarized Ku-Band Patch Antenna withImproved Axial Ratio Bandwidth for Small Satellite Application
Abstract: This study presents the design and fabrication of a Ku-band patch antenna that achieves right-hand circular polarization (RHCP) with an enhanced axial ratio (AR) bandwidth. The proposed antenna consists of two circular split ring resonators(SRRs) and a T-shaped feedline. To achieve circular polarization, circular split ring resonators were placed symmetrically at both ends of the T-shaped feedline. The proposed antenna has been carefully designed and simulated using the CST Microwave …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 2, 2025 · pp. 56–63 Read article
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Wireless Power Charging Technologies for Internet of Things (IoT) Applications: A Comprehensive Review
Abstract: The propagation of Internet of Things(IoT) devices has significantly transformed the technological landscape, prompting a reevaluation of power management strategies. Traditional power supply methods can be cumbersome, necessitating frequent battery replacements or inconvenient cord connections, which limit the versatility and deployment of IoT devices. This article explores the integration of wireless power charging technology into IoT ecosystems, examining its technical viability, practical applications, and potential to enhance the lifespans and …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 10, Issue 1, 2024 Read article
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Eco-Friendly Synthesis of Nanoparticles: Advancing Green Methods Using Plant Extracts
Abstract: Nanotechnology, focusing on materials sized 1-100 nm, has garnered significant interest for its applications in agriculture, pharmaceuticals, and electronic devices. Nanomaterials, due to their unique properties, are pivotal in the development of advanced technologies such as drug delivery systems and nano-devices. Conventional nanoparticle synthesis methods, including sol-gel, chemical precipitation, microwave, and chemical vapor deposition, often involve hazardous chemicals, posing environmental risks. Therefore, there is a crucial demand for environmentally friendly …
Published in International journal of Nanobiotechnology · Vol. 10, Issue 1, 2024 Read article
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Biosynthesis of Silver Nanoparticles Using Plant Extract
Abstract: In recent years, research in nanotechnology deals with the development of environmental-friendly processes for the synthesis of stable nanoparticles, possessing well-defined shapes, and controlled narrow sizes. Additionally, due to a vast demand for precious metals (like silver) in the fields such as electronics and catalysis, recovery of silver from both primary and secondary sources is of most significance. Biological recovery of precious metals with the formation of their nanoparticles is …
Published in International Journal of Plant Biotechnology · Vol. 1, Issue 1-2, 2015 · pp. 12–17 Read article