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118 articles for “dielectric studies”
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Structural and Optical Properties of Nanocomposites of Polyethylene Oxide Embedded with Nano-ZNO
Abstract: Polymer nanocomposites have attracted significant attention in recent years owing to their unique properties and potential applications in a variety of fields. In this study, PEO-ZnO nanocomposites were prepared with different wt.% (5, 10 and 15) nano-ZnO particles incorporated into PEO matrix by a solution casting method. Structural and Optical properties of PEO-ZnO nanocomposites were studied. X-ray diffraction (XRD) studies suggest the incorporation of ZnO NPs into PEO matrix. The …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 586–600 Read article
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INVESTIGATION OF MICROSTRIP BANDPASS FILTER FOR S-BAND APPLICATION
Abstract: Abstract— Microstrip bandpass filter is presented in this paper for S-band application. The filter employs the microstrip line with port matching topology and plane ground to operate in S-band frequency range. CST Microwave Studio simulator is used for simulation and Rohde & Schwarz Vector Network Analyzer is used for measurement. Filter has size of 120 mm x20 mm and fabricated using low cost FR-4 substrate of 1.6 mm thickness and …
Published in Current Trends in Signal Processing · Vol. 8, Issue 1, 2018 · pp. 28–32 Read article
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Surface Modification by Electro-discharge Coating and Its Characterisation
Abstract: Applications of coated surface are swiftly increasing in present industrial context. Recently, the electro-discharge route is being explored for surface modification in terms of alloying and layer deposition. Electro-discharge machining parameters and response to surface deposition is of the research interest in electro-discharge coating. In this regard, electro-discharged surface modifications have been characterized in the present investigations. The effect of relevant EDM parameters (current, Pulse duration, duty factor, density of …
Published in Trends in Mechanical Engineering & Technology · Vol. 3, Issue 2, 2013 · pp. 43–50 Read article
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Studies on Mechanical, Electrical and Thermal Properties of Compatibilized PLA/ABS Blends Reinforced with Wood Flour
Abstract: AbstractPoly lactic acid (PLA) bio-polymer (60%) was blended with acrylonitrile butadiene styrene (ABS) (40%) and filled with wood flour (0, 10, 20%) using a twin screw compounding extruder and a suitable compatibilizer i.e., glycerol, is also incorporated into that mixture at a percentage of 4% respectively. Test specimens were prepared by using an injection molding machine for mechanical, electrical and thermal properties as per ASTM standards and the properties were …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 20–26 Read article
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Multiphysics Optimization of Polymer–Metal Hybrid Electrode Geometry in Electrostatic Precipitators for Enhanced Particle Collection Efficiency
Abstract: Electrostatic precipitators (ESPs) remain one of the most effective technologies for controlling fine particulate emissions in industrial exhaust systems. However, their performance is strongly influenced by electrode geometry and material characteristics, which govern electric field distribution, corona stability, and particle migration behaviour. In this study, a comprehensive numerical investigation is carried out to optimize electrode geometry using a multiphysics modelling framework, while introducing a novel polymer–metal hybrid design to enhance …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 701–716 Read article
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Polymer Encapsulants for Photovoltaic Modules: Electrical Insulation Performance and Long-Term Durability under Accelerated UV Exposure
Abstract: Influence on the reliability and service life of PV modules is a major issue, which is influenced by the encapsulant degradation in long-term exposure to the sun's ultraviolet (UV) radiation. A systematic accelerated UV aging study of Ethylene Vinyl Acetate (EVA), Polyolefin Elastomer (POE), and Polyvinyl Butyral (PVB) films under IEC 61215-2:2021 specified test chamber conditions of Q-UV is conducted. The material properties were tested at various exposure intervals including …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 384–408 Read article
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Wearable Antenna using Foam Substrate for Multiband Application
Abstract: The novel and flexible antenna for modern communication system is studied in this paper. The proposed antenna is compact in size, shows high directivity and large bandwidth. Polystyrene foam material is used as a substrate because such antenna is bendable, wearable, inexpensive, require less attention and having good features like low dielectric constant, low loss tangent and better efficiency. The parameters of antenna such as reflection coefficient, gain, bandwidth, radiation …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 2, 2017 · pp. 23–26 Read article
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Detailed Study On Physical Properties Of Silicon Nitride Films Deposited By Plasma Enhanced Chemical Vapour Deposition System
Abstract: Amorphous silicon nitride films have been deposited by radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) technique using silane (SiH4) and ammonia (NH3) as source gases. Investigations have been made in detail to understand the influence of process parameters such as RF power, substrate temperature, gas flow ratio, working pressure etc, on the optical, electrical and surface properties in order to obtain dielectric Si3N4 films for semiconductor device applications. Amorphous …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 1, 2016 · pp. 1–8 Read article
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Comparison Analysis of Transformer Boosting and Induced Degeneration Topology Design of LNA for Millimeter Wave Frequency Range Using Polymeric Substrates
Abstract: In this study, a comparison between transformer boosting and source degeneration LNA topologies is conducted using two polymeric substrates—Polyimide (PI) and Liquid Crystal Polymer (LCP)—for millimeter-wave (mmWave) applications. With growing interest in flexible and high-frequency electronics, polymeric materials offer unique advantages such as low dielectric constants, mechanical flexibility, and thermal stability. The analysis explores gain, return loss, and noise figure performance while evaluating the influence of dielectric properties on the …
Published in International Journal of Electrical and Communication Engineering Technology · Vol. 3, Issue 2, 2025 · pp. 1–24 Read article
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Dual Band Rectenna for Energy Harvesting and Wireless Power Transfer
Abstract: In this paper, anticipated antenna for energy harvesting has been studied with high directivity, high gain and good return loss. The simulation of the proposed antenna was carried using IE3Dsoftware. The presented antenna is fit for wireless power transfer at resonant frequency 2.7 and 4.75 GHz. The microstrip antenna design is very compact which is made of glass epoxy having dielectric constant of 4.4.Keywords: Microstrip patch antenna, return lossCite this …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 3, 2017 · pp. 1–4 Read article
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CPW fed Pyramidal Antenna for Dual Band Application
Abstract: In this study, a pyramidal shaped coplanar waveguide fed antenna with modified ground and radiating structure for GSM and WLAN applications is presented. The antenna is resonating at different frequencies 1.8/5.2 GHz, which is covering GSM and WLAN (IEEE802.11a). Antenna has simple planar structure of 39×37×1.6 mm3 using RT duroid substrate dielectric constant 2.2 and loss tangent of 0.002 with a slit on ground plane. The proposed antenna achieved return …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 5, Issue 3, 2018 · pp. 1–5 Read article
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Analysis of Parabolically versus Exponentially Tapered Inbuilt Chip-to-Fiber Butt Coupler
Abstract: AbstractThe finite difference beam propagating method (BPM) is one of the most powerful technique to investigate linear and nonlinear lightwave propagation phenomena in axially varying waveguides such as curvilinear directional couplers, branching and combining waveguides, S-shaped bend waveguides, and different types of tapered waveguides. BPM is also quite important for the analysis of ultra short light pulse propagation in optical fibers. To date numerous algorithms for BPM have been proposed …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 1, 2013 · pp. 11–15 Read article
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AI-Assisted Defect Detection in Polymer Composite Insulators Using an Optimised Ensemble Deep Learning Framework for Structural Health Monitoring
Abstract: Polymer composite insulators, particularly those made from silicone rubber and epoxy resins, are increasingly adopted in high-voltage transmission systems due to their superior electrical insulation, lightweight design, hydrophobicity, and environmental durability. Despite their advantages, these materials are susceptible to surface degradation, mechanical cracking, and flashover under prolonged exposure to environmental pollutants, thermal stress, and electrical aging. Accurate, real-time condition assessment of these composite insulators is critical for ensuring operational safety, …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 253–261 Read article
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Signaling Techniques in Telecommunication Network
Abstract: The importance of wearable products such as wearable textile antenna is increasing day by day because of the recent miniaturization of wireless devices. In the last few years it has received a vast amount of attention due to utilization in smart clothing and future consumer-centric communication technologies. The main challenges for designing textile antennas are low weight, low profile and low cost. The fabrication technique and the use of materials …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 1, 2016 · pp. 48–55 Read article
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Design and Performance Analysis of Different UWB Modified Circular and Ring-shaped Microstrip Patch Antennas
Abstract: The importance of wearable products such as wearable textile antenna is increasing day by day because of the recent miniaturization of wireless devices. In the last few years it has received a vast amount of attention due to utilization in smart clothing and future consumer-centric communication technologies. The main challenges for designing textile antennas are low weight, low profile and low cost. The fabrication technique and the use of materials …
Published in Recent Trends in Electronics Communication Systems · Vol. 3, Issue 1, 2016 · pp. 9–28 Read article
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Design and Analysis of Dual Band Equal Split N-way Wilkinson Power Divider
Abstract: Abstract A Design and analysis of dual band equal split N-way Wilkinson power divider is proposed in this specific work. For this the design of 2-way 4-way, 5-way and 6-way power divider is made with the help of an N-way power divider. An isolation resistor is used to achieve good isolation at output port of Wilkinson power divider. Parameters of the proposed configuration are calculated at the centre frequency of …
Published in Current Trends in Information Technology · Vol. 3, Issue 1, 2013 · pp. 17–20 Read article
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Structural, Electronic and Optical Properties of ZnO Material Using First Principle Calculation
Abstract: Structural, electronic and optical properties have been determined by using first principle calculation for ZnO material. In present study, full potential linearized augmented plane wave method has been selected with generalised gradient approximation executed in WIEN2k. Structure of ZnO material stabilises in the Wurtzite form of hexagonal closed packed crystal with lattice constant a=3.289Å, c= 5.307Å. Density of states and band structure diagram of ZnO material shows semiconductor nature with …
Published in Journal of Polymer & Composites · Vol. 11, Issue 5, 2023 · pp. 27–34 Read article
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A Review on Chiral Metamaterials and its Applications in Antennas
Abstract: AbstractThis paper presents a review of the chiral metamaterials (CMM) and their different specific properties like circular dichroism, negative refractive index, and giant optical activity. The physical properties of metàmaterials circular dichroism and the method of retrieval of effective parameters of the CMM are discussed in detail. The various classes of the chiral metamaterial and their results of the simulation are presented. The study shows that the chiral metamaterials have …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 2, 2018 · pp. 5–16 Read article
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Experimental and Numerical Investigation of Corrosion-Induced Failures in Copper-Tin Alloy (Cu-Sn) and Aluminum-Magnesium Alloy (Al-Mg) Connectors: A Stress–Corrosion Coupling Analysis
Abstract: The utilization of an integrated experimental and finite element modelling (FEM) methodology, this study investigates the degradation and failure mechanisms in polymer composite electrical connectors exposed to aggressive environmental conditions. Epoxy- and polyamide-based composites, reinforced with carbon and glass fibers, were subjected to accelerated salt spray and humidity–temperature cycles to simulate prolonged outdoor exposure. Electrochemical and environmental aging experiments revealed that chloride ions and moisture ingress were responsible for matrix …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 366–379 Read article
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Microwave Signals: A New Frontier in Non-Invasive Medical Diagnostics: A Study
Abstract: Imagine a future where medical diagnoses are quicker, safer, and more accessible, and where therapies are more precise and less invasive. This future is rapidly approaching, driven in part by the quiet revolution of microwave signals in medicine. Far from their everyday use in ovens and communication, these non-ionizing electromagnetic waves are proving to be powerful tools, offering unprecedented insights into the human body and innovative ways to treat disease. …
Published in Journal of Microwave Engineering and Technologies · Vol. 12, Issue 3, 2025 · pp. 27–41 Read article