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704 articles for “transmissivity”
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Compact Dual Band Rat Race Coupler Using T-shaped Transmission Line and Fractal Geometry
Abstract: In this paper, a compact dual band rat race coupler is proposed at two different frequency bands. The dual band property is accomplished by transforming the length and impedance of conventional quarter wave transmission line into dual band T-shaped sections. To achieve the compactness, the dual band rat race coupler was transformed into fractal structure using Sierpinski curve analogy. Simple design equations are used for basic design geometries. Then the …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 2, 2017 · pp. 6–12 Read article
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Microwave based approach for Wireless Power Transmission
Abstract: Today's fast-paced world is characterized by advances in every region, one among that is wireless charging, and gaining applications in the various files. Wireless charging is an innovative technology of transmitting power with an air gap, energy recharging as the end goal. The recent advancement in wireless charging practice, as well as the enhancement of business products, have offered it as a promising alternative for addressing the energy bottleneck of …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 1, 2021 · pp. 6–9 Read article
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Principles and Use of Analytical Transmission Electron Microscope
Abstract: At the beginning of the review the analytical Transmission Electron Microscope is introduced. Equipment, imaging, diffraction and use of analytical TEM are described. Electron path under magnetic lens is delineated, emphasizing the lens aberrations, diffraction, astigmatism and gun brightness. Selected area electron diffraction patterns of Al-Cu and Inconel super alloy are used to index crystallographic planes and to derive zone direction while basic sources of diffraction contrast are depicted using …
Published in Journal of Materials & Metallurgical Engineering · Vol. 9, Issue 3, 2019 · pp. 27–49 Read article
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Frequency Characteristics and Transient Response of Transmission Lines with Longitudinally Varying Ambient Temperature
Abstract: This paper addresses the steady state, the frequency characteristics and the transient response ofpower lines in the presence of longitudinally varying ambient temperature. This variation willlead to location-dependent line circuit parameters and to a changing equivalent circuit. Thederived models, which are based on the exact long line theory, can incorporate the impact of thedifferent patterns of the temperature distribution in terms of location and magnitude. Severalcase studies of the resulting …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 3, 2019 · pp. 19–30 Read article
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Efficient Transmission Pricing using Power Flow Tracing
Abstract: The evolution of transmission pricing philosophies in deregulated power markets has introduced various techniques for efficient and accurate cost estimation of power exchanges. Earlier methods of postage stamp cost estimation failed to provide accurate cost signals. Point of Connection (POC) method is a technique through which a considerable sunk cost can be recovered but is still inefficient if applied alone. In addition to this, the POC method along with the …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 1, 2023 · pp. 6–15 Read article
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Optical Filters From Silicon Dioxide Doped Dyes
Abstract: In this work silicon dioxide powder of high purity 99.5% imported from china was used to fabricate optical filters by doping the SiO2 with green and red phenol dyes with different concentrations of 0.25,0.5,0.75 and 1 in terms of mg, four samples of red SiO2 doped phenol filters and four samples of green SiO2 doped phenol filters were produced by pressing the mixture of silicon dioxide powder doped with the …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 7, Issue 1, 2020 · pp. 39–48 Read article
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Fast Transmission Wireless Network System based on Gaussian Space
Abstract: The fast transmission of the information is achieved by Gaussian Space. The proposed wireless network system is based on the random variable and entropy optimization by Gaussian Space. The channel is distributed over the entropy matrix. The efficiency of the system comprises with the random selection of the variables and the security lies with the matrix representation theory. Thus, a proposed system carries the basic characteristic of the standard wireless …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 6, Issue 2, 2019 · pp. 19–25 Read article
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Interpretation of Position Information Based Routing Protocols with Different Transmission Power
Abstract: VANET is a technology that is used to avoid accident and it provides safety on road. VANET is used to achieve the continuous connectivity. It provides essential alert and accessing comfort and entertainment on road. Routing protocol plays big role in vehicular network. It provide a way how to find so many routes to reach destination and if network failure then it goes to alternate path. Hence this paper proposed …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 2, Issue 3, 2015 · pp. 1–5 Read article
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On Optimized Transmission by Trace Theory
Abstract: Abstract: The objective of this study is to design efficient wireless information system. The Trace based optimization technique is applied to achieve this goal. The linear programming-based formulation of the wireless environment is discussed. An analysis of this formulation is also presented in this research. The trace and average information are studied with respect to the time and space. Keywords: Wireless Information System, TraceCite this Article Vijayant Verma, Abhishek Badholia, …
Published in Recent Trends in Sensor Research & Technology · Vol. 6, Issue 1, 2019 · pp. 22–28 Read article
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Wearable Rectenna Array for Wireless Power Transmission
Abstract: This paper explains about design of wearable antenna array which is used for receiving the microwave power transmitted at dual frequencies. Direct current power is obtained at the end of rectifying antenna or (Rectenna) composed with filter and Schottky diode. Proposed wearable antenna is designed on jeans textile as a substrate and copper foil tap as conducting material. The antenna array has the dual band resonating frequencies which are 4.65 …
Published in Trends in Electrical Engineering · Vol. 8, Issue 1, 2018 · pp. 59–64 Read article
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Design and Analysis of a Low Loss Polarization Maintaining Waveguide for Transmission of THz Waves
Abstract: AbstractThis paper presents the design of a novel porous core kagome lattice photonic crystal fiber (PCF) which acts as a low loss and polarization maintaining teraheartz (THz) waveguide. Using finite element method (FEM), properties of the proposed PCF are simulated in details including the effective material loss (EML), confinement loss, single mode propagation. Cyclic olefin copolymer, also known as TOPAS material have been chosen for the air micro structured inhibited …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 3, 2016 · pp. 13–22 Read article
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An Analysis of Optical Transmission System using Fiber Bragg Grating (FBG) with Power Optimization and Dispersion Compensation
Abstract: AbstractThe Fiber Bragg Grating (FBG) is a low cost filter for wavelength selection and also has low insertion loss. We know that Dispersion Compensation (DC) and Power Optimization (PO) are one of the most important parameters of the optical communication system. In this proposed communication model, dispersion compensation has been achieved and also we optimized almost same power at the receiver end, also we have calculated output power for different …
Published in Trends in Opto-electro & Optical Communication · Vol. 5, Issue 2, 2015 · pp. 1–5 Read article
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Performance Analysis of a Subcarrier Multiplexed Qpsk Modulated Free Space Optical Mimo Transmission Link through Atmospheric Turbulence
Abstract: AbstractFree space optical (FSO) communication shows potential technology for communication. But the main weakness is atmospheric turbulence which causes major transmission destruction for an open air optical communication system. In this paper, the performance of free space optical (FSO) is analyzed using subcarrier multiplexed QPSK intensity modulated OFS link with optical intensity modulation and direct detection for a single input single output (SISO) system considering strong atmospheric turbulence. To overcome …
Published in Trends in Opto-electro & Optical Communication · Vol. 1, Issue 1-3, 2011 · pp. 32–40 Read article
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Use of the Visible Spectrum of Light and Light Transmission: A Review
Abstract: Almost everyone uses the internet today, either over a wired or wireless network, to complete their tasks. Everyone, including businesses, organisations, entrepreneurs, and institutions, is concerned about accessing the right information at the right time and place, so internet speed is a significant issue. Then you need technology, a wide range of channels, and quick internet connectivity. According to 1EEE 802.11n specifications, wireless fidelity (Wi-Fi) provides a speed of 150 …
Published in Trends in Opto-electro & Optical Communication · Vol. 12, Issue 3, 2022 · pp. 31–36 Read article
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Bandwidth Extension of Speech Signal Artificially & Transmission & Coding for Wireless Communication
Abstract: AbstractIn today’s next generation wireless communication, decoded speech quality at recipient side initiate quiet and slim; mainly recognized to intrinsic band limitation (300-3400 Hz). so as to increase clearness and genuineness of improved speech signal. Narrowband speech coders be supposed to promote to wideband coders supports bandwidth of 50-7000Hz. extensive time duration has been left for advancement from narrowband to fully wideband well-suited systems. Many smart devices at the present …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 2, 2019 · pp. 111–116 Read article
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Surveillance Robot for The Live Video Transmission Application
Abstract: In this project decides to focus to create a Surveillance Robot, which can prove to be an important undertaking to protect humanity in today's changing environment. By changing the size of this robot, we can monitor any place or get secret information there. It can be fitted in a drone, so that sensitive borders of the country can be monitored. In this period of corona, the ward of corona patients …
Published in Recent Trends in Sensor Research & Technology Read article
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A Narrative Review on Tuberculosis Disease Transmission, Treatment, Prevention, Emergency Care, and Vaccine Allocation in Second Highest Populated Country (India)
Abstract: Tuberculosis, an airborne illness caused by Mycobacterium tuberculosis, is a highly contagious disease primarily impacting the lungs, though it can also affect other body parts, excluding hair and nails. There are two main types of tuberculosis: pulmonary tuberculosis (PTB), which targets the lungs, and extrapulmonary tuberculosis (EPTB), which involves other areas such as lymph nodes, bones, joints, and the nervous system. The theme for World Tuberculosis Day in 2024 is …
Published in International Journal of Emergency and Trauma Nursing and Practices · Vol. 2, Issue 1, 2024 · pp. 7–13 Read article
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Enhancing Attendance Recording: Python and Arduino Integration for RFID Data Transmission to MySQL
Abstract: The suggested attendance system is used to control attendance from a central unit in vast, branching factories or universities. It consists of terminal units and a central unit. A Raspberry Pi, a screen GUI, an RFID reader, a transponder card for each user (such as a student), and a GSM board make up each terminal unit. A PC, a GSM board, and an Arduino make up the main unit. Every …
Published in International Journal of Radio Frequency Innovations · Vol. 1, Issue 2, 2023 · pp. 23–28 Read article
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A study on IoT and AI for Predictive Modeling and Control of Infectious Disease Transmission
Abstract: Background: The global response to novel and recurring infectious diseases is frequently hindered by surveillance systems that are slow, siloed, and reactive. Traditional epidemiology relies on retrospective analysis of clinical reports, often missing the critical early phase of autocatalytic spread. The urgency of modern public health necessitates a shift toward real-time, predictive intelligence. Methods: This study investigates the development and deployment of a synergistic paradigm integrating the Internet of Things …
Published in International Journal of Pathogens · Vol. 2, Issue 2, 2025 Read article
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Signal Transmission in Underwater Using Passive Time Reversal for Single and Multiuser
Abstract: This paper describes passive time reversal communications, which enables multiple users to send information simultaneously to the time reversal array. Experimental results at 3.5 kHz with a 1 kHz bandwidth demonstrate that as many as six users can transmit information over a 4 km range in a 120 m deep water using quaternary phase-shift keying (QPSK) modulation, achieving an aggregate data rate of 6 kb/s. Moreover, the same data rate …
Published in Current Trends in Signal Processing · Vol. 6, Issue 2, 2016 · pp. 49–54 Read article