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1109 articles for “loss”
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Triple Band PIFA Antenna Using The DGS Method
Abstract: In this paper, a new design of a triple band Planner Inverted –F Antenna (PIFA) with DGS, for mobile and wireless communication systems is presented. The PIFA antenna consists of ground plate, patch antenna, feeding port and shorting plate connected to the ground plate. The designed antenna has been simulated with the help of the CST (computer Simulation Technology) software microwave studio 2010. The simulated results calculated for the resonant …
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 2, 2014 · pp. 9–16 Read article
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U-Shaped Antenna Design for 5G High Frequency Band
Abstract: Designing small antennas for 5G millimeter wave bands is an emerging research subject in the wireless communication age. This research paper describes the design, simulation, and measurement of a micro-strip patch antenna operating at high frequency, 38 GHz. The substrate material used is FR4 proxy due to its easy availability and cost with the dielectric constant 3.8 to 4.6. The analysis and simulation are done on Ansys HFSS Software. The …
Published in Journal of Microwave Engineering and Technologies · Vol. 10, Issue 3, 2023 · pp. 31–40 Read article
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Comparative Study of Microelectromechanical Switches for RF Applications: A Review
Abstract: Switches are very basic components for any communication application. The switch performance depends on their ability to allow a signal without loss and its speed of operation. In this paper, the different switches which are being used for RF application are presented along with their advantages and disadvantages. The main focus of this study is to provide comparative study about different microelectromechanical (MEMS) switches and also different techniques to improve …
Published in Journal of Semiconductor Devices and Circuits · Vol. 6, Issue 2, 2019 · pp. 6–12 Read article
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Simulation of Different Propagation Models for WiMAX channel under Different Environments
Abstract: Today the Worldwide Interoperability of Microwave Access (WiMAX) technology is gaining popularity and gaining increasing acceptance as a Broadband Wireless Access (BWA) system. It is a IEEE 802.16 standard wireless communication technology that provides high speed data over a wide area. It is a point-to-point technology for using a multi-point wireless network. It has potential success in its line of sight (LOS) and non-linear (NLOS) operating conditions under the frequency …
Published in Recent Trends in Electronics Communication Systems · Vol. 8, Issue 2, 2021 · pp. 35–45 Read article
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Li-Fi’s Marketplace in the Future
Abstract: In this work, we are describing our project on the Li-Fi system. The full form of Li-Fi is “light fidelity”. It is the forerunner of Wi-Fi. Li-Fi is a type of data transmission technology that will be used in the future because of its causes and benefits. Wi-Fi and Li-Fi are not similar to each other. There are many differences between them in every aspect. In terms of speed, Li-Fi …
Published in Journal of Communication Engineering & Systems · Vol. 12, Issue 3, 2022 · pp. 1–5 Read article
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Ayurvedic Intervention in Recurrent Abortions w.s.r. to Putraghni Yonivyapada
Abstract: To give birth is the most heartfelt initiation to spirituality a woman can experience. However sometimes due to various causes gestation is not continued till term which is very agonizing for a couple. Habitual Abortion (or recurrent abortion) refers to a history of repeated miscarriage, which is defined as three or more succeeding pregnancy losses before 20 weeks of pregnancy from the last menstrual period. Repeated miscarriage/Pregnancy loss is often …
Published in Research and Reviews : A Journal of Ayurvedic Science, Yoga and Naturopathy · Vol. 9, Issue 2, 2022 · pp. 26–32 Read article
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Assessing Efficacy and Safety: Oxytocin Monotherapy vs. Oxytocin + Carbetocin Combination Therapy
Abstract: Objective: Comparing the Effectiveness between Oxytocin monotherapy and Oxytocin + Carbetocin. Methods: A prospective, non-randomized, observational study focusing on 221 women with CS was conducted. The patients eligible based on inclusion and exclusion criteria were screened and final sample size was 139. Individual patient data including patient demographics, medical history, OT notes, pre and post CBC reports, and safety data were obtained from the patient records. The study compared between …
Published in International Journal of Tropical Medicines · Vol. 1, Issue 1, 2024 · pp. 40–51 Read article
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Concern for Public Health: Periodontitis
Abstract: Periodontitis, a severe form of gum disease, erodes the bone that supports teeth and results in tooth loss. It is caused by bacterial infection and inflammation of the soft tissues around the teeth. About 70% of people 65 years of age and older are affected, on average. Red, bleeding, sensitive gums, foul breath, and receding gums are hallmark indications. Depending on the severity, a full dental examination, the insertion of …
Published in Research and Reviews: A Journal of Dentistry · Vol. 15, Issue 1, 2024 · pp. 22–26 Read article
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Assessment of Soil Erosion Impacts at the Panchhari Sub-district of Chittagong Hill Tracts in Bangladesh Using Remote Sensing and GIS Techniques Based on RUSLE Model
Abstract: Soil erosion has been identified as a significant issue around the world. It is often exacerbated due to land deterioration, conversion of agricultural land, and other anthropogenic activities. It negatively impacts soil productivity, water quality deterioration, river and reservoir bed sedimentation, nutrient loss, and sustainability of natural resources. Understanding the controlling factors of soil erosion can help us to identify erosion-prone areas and improve land use management. The novelty of …
Published in International Journal of Climate Conditions · Vol. 1, Issue 2, 2024 · pp. 9–30 Read article
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Participatory Demonstration of Desho and Elephant Grass Strip as Biological Soil and Water Conservation Measures for Erosion Control
Abstract: Participatory demonstration and pre scaling up of biological soil conservation measures (desho andelephant grass)compared with control (without grass) works were conducted in 2011/12 E.C on three beneficiary farmers field by the main objective is contribution of biological conservation measures for controlling soil erosion and assessing farmer perception on these measures. The data were taken from 132 m2 trail area. Average soil loss data that were obtained from Elephant grass 6.6 …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 13, Issue 2, 2024 · pp. 01–08 Read article
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Experimental Analysis of Residual Stress, Micro-Hardness and Corrosion Behavior of HVOF Sprayed Composite Coating
Abstract: The utilisation of non-traditional composite coating materials, enhanced lubrication, and surface geometry optimisation have all contributed to the tribological performance. Piston rings are among the most crucial engine parts since friction causes between 40 and 45 percent of all energy loss. Fuel efficiency, power loss, and exhaust pollutants are all strongly impacted by the piston assembly's tribological performance. The present study's primary goal was to develop composite coating by using …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 77–82 Read article
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Hearing, Speech, and Language Characteristics in a Case with Hemoglobinopathy Secondary to Beta Thalassemia Intermedia
Abstract: Background: Thalassemia is an inherited disorder characterized by a reduced amount or absence of hemoglobin, the oxygen-carrying protein inside the red blood cell. Thalassemia has its types called alpha and beta-thalassemia. Beta thalassemia is a condition in which there is a reduction or deficit in the synthesis of the beta-globin chain of hemoglobin molecules caused by a mutation in chromosome eleven. Beta thalassemia can be broadly categorized into three main …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 14, Issue 1, 2024 · pp. 1–5 Read article
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Intelligent Aquaculture System for Fish Disease Detection Using Machine Learning
Abstract: Aquaculture is one of the key factors for global food security, but fish diseases bring about heavy economic losses and jeopardize sustainability. One of the most important aspects of global food security is aquaculture, but fish infections endanger sustainability and cause significant financial losses. Early diagnosis is not possible since traditional disease detection techniques are laborious and necessitate expert intervention. To effectively detect fish infections, this study suggests an Intelligent …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 12, Issue 2, 2025 · pp. 30–37 Read article
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Effect of Bi2O3 Content and Sintering Temperature on the Frequency-Dependent Magnetic Properties of Nanosized Barium Hexaferrite
Abstract: The magnetic properties of commercially available nanosized barium hexaferrite (BaFe12O19) are studied. The particles were characterized using X-ray diffraction (XRD), vibrating sample magnetometer (VSM), and high-frequency magnetic measurements. The frequency-dependent magnetic properties viz. complex permeability and loss tangent were analyzed within the 10 MHz to 1 GHz range. Variations in complex magnetic permeability and loss tangent were discussed under varying sintering parameters such as temperature and sintering aid content. The …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 107–113 Read article
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Light Waves and Data Highways: The Physics of Optical Communication Networks
Abstract: Optical communication has revolutionised modern telecommunication, allowing for the quick transfer of information by light signals. This technology uses optical fibres as the transmission medium and offers higher bandwidth, lower signal loss and faster data transfer than typical electrical communication systems. Optical communication has become a key enabler of internet services, mobile networks, satellite communication and data centers which are all driving the increasing demand for high speed and dependable …
Published in International Journal of Optical Innovations & Research · Vol. 4, Issue 1, 2026 · pp. 13–24 Read article
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MATLAB Simulation of Partial Power Converter with Dual- Mode Inverter for Solar Conversion
Abstract: The growing insertion of solar photovoltaic (PV) systems in the modern power systems requires high-efficiency, compact and reliable power conversion solutions. The traditional PV conversion system generally uses full-power processed DC-DC converters followed by inverters, which increases conduction and switching power losses, especially at higher power ratings. To overcome these challenges, this paper proposes a partial power processed resonant converter with a dual-mode transformer-less inverter for efficient solar PV power …
Published in Trends in Electrical Engineering · Vol. 16, Issue 2, 2025 · pp. 33–43 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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A Comprehensive Energy Audit for Energy Efficiency Improvement in Commercial Building in Bangladesh
Abstract: As a developing country, Bangladesh is developing rapidly due to the increase in industry and technology. However, the country has been facing an energy crisis for many years to meet growing demand. Gradually, the gap between energy supply and demand is getting bigger and bigger. An effective way to close the gap is to conduct regular energy audits of all departments to help identify losses and wastes and provide room …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 12, Issue 2, 2021 · pp. 12–40 Read article
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Modeling, Analysis and LQR Control of an EV Differential using IPMSM
Abstract: Recently, the mechanical differential (MD) of vehicle has been replaced by electronic differential (ED) by means of electric motor. Electronic differential ensures dynamic and robust control of the vehicle behavior. The ED has been designed for an electrical vehicle (EV) based on IPMSM due to its some inherent advantageous features. The design of speed controller of an IPMSM mainly depends on its mathematical model. The mathematical model based speed controller …
Published in Journal of Control & Instrumentation · Vol. 7, Issue 2, 2016 · pp. 23–34 Read article
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Review on Unconstrained Layer Damping Treatment and Its Applications
Abstract: The unconstrained layer damping is also called as free layer damping. It is formed by applying a damping material on the surface of a structure. This treatment was used to reduce and control the vibrations and noise in structures. This paper presents a review on unconstrained layer damping treatment on beams using different damping materials. The objective is to present various aspects and relative merits of unconstrained damping treatment use …
Published in Journal of Experimental & Applied Mechanics · Vol. 11, Issue 1, 2020 · pp. 16–19 Read article