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385 articles for “Frequencies Applications”
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Radio Frequency Energy Harvesting Using Microstrip Antenna
Abstract: In this paper, an antenna for energy harvesting in radio frequency range has been studied. The presented microstrip antenna gives good return loss obtained for wide range of applications in RF region ranges from 2.33 to 6.68 GHz. The anticipated antenna is best suitable to receive the RF energy from the environment that can be used to charge the electronic devices. The simulations of the proposed antenna were carried using …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 3, 2017 · pp. 12–15 Read article
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Microstrip Planar Broadband Yagi-Uda Antenna for X-Band Communication
Abstract: In this paper, a planar Yagi-Uda antenna based on classic Yagi-Uda dipole antenna is accessible which is very useful for microwave wireless applications. This antenna provides relatively high gain and more directive radiation pattern at X frequency band with proper impedance matching. This antenna has been developed at supporting dielectric constant of 4.4, supported substrate thickness of 1.6 mm and loss tangent of 0.02. The proposed antenna is completely compatible …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 60–63 Read article
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Low profile L5 and S band Microstrip antenna for IRNSS Application Using Coxial Feed
Abstract: In recent aura, navigation is one the most demanding technology. To increase coverage, gain and bandwidth are more important of any wireless communication systems India has developed its own navigational system called IRNSS which work one two frequency band one is L5 (1.176 GHz) and second one is S band (2.482-2.502 GHz) In this paper we proposed 2 different antenna one for L5 band and second for S band antenna …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 3, 2018 · pp. 7–17 Read article
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Design and Application of a Lead Compensator to a Guided Missile Control System
Abstract: Phase lead compensation is an important and reliable method for classical control design in the frequency domain for continuous time systems. This study is concerned with the design of a lead compensator using Bode plot for a laser guided missile to satisfy the required performance specifications. Simulation studies are carried out in MATLAB which shows that the compensated system meets the desired specifications.Keywords: Bode plot, missile control system, phase lead …
Published in Journal of Control & Instrumentation · Vol. 11, Issue 2, 2020 · pp. 23–33 Read article
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An Analytical Method for the Analysis of Transformer Windings Having Non-Uniform Capacitance Distribution
Abstract: A direct procedure for the transient and frequency analysis of transformer windings with location-dependent inter-turn capacitance distribution is presented. This can help simulate windings with non-uniform insulation. The derived analytic solutions in the Laplace domain are based on expressing the non-uniformly-distributed series capacitance per unit length as the sum of a constant term and a variable part proportional to the square of the distance from the winding’s source terminal. The …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 2, 2015 · pp. 41–54 Read article
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Co-planar Waveguide Circular Ring Microstrip Patch Antenna for WLAN Applications
Abstract: AbstractA printed circular microstrip patch antenna with a four rectangular shape strip and co planar rectangular ground plane has been proposed. Four rectangles of dimensions 4.8mm x3mm are arranged in such a manner to achieve both the WLAN frequency band. The bandwidths of 341MHz and 414MHz are achieved having a resonant frequency of 2.37GHz and 5.45GHz respectively. This antenna is printed on the glass epoxy (FR4 lossy) of dielectric substrate …
Published in Journal of Communication Engineering & Systems · Vol. 6, Issue 3, 2016 · pp. 1–6 Read article
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Modeling of Transformer Windings having Non-uniform Inductance Distribution
Abstract: A direct analytical procedure for analyzing power transformer windings with location-dependent series inductance is presented. This dependence is typically introduced in order to take the inter-turn mutual inductive coupling into consideration. The paper addresses the frequency domain analysis conducted in the complex s- or the jω-domains. Results for the frequency-dependent winding’s input impedance with different treatments of the transformer’s neutral point will be available. The frequency characteristics including the resonance …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 3, 2014 · pp. 12–25 Read article
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Study of Dielectric and Magnetic properties for ZnFe 2 O 4 Nanoparticles Synthesized usinghigh current Exploding Technique
Abstract: The current article uses the exploding wire technique to examine the magnetic, electrical, and dielectric properties of nanoscale zinc copper ferrite (ZnFe2O4). The SEM micrographs confirm the almost uniform size distribution of the nanoparticles. The Mossbauer spectrum of the nanoparticles was recorded with an externally applied magnetic field at room temperature. The ferromagnetic behavior of the ZFO sample was determined through VSM measurements at ambient temperature, and the M-H loop …
Published in Journal of Polymer & Composites · Vol. 11, Issue 12, 2023 · pp. 161–166 Read article
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Millimeter Wave in Internet of Things Connectivity: A Study
Abstract: The internet of things (IoT) is rapidly evolving, connecting billions of devices and transforming industries. However, this growth is stretching the limitations of traditional wireless communication technologies. Enter millimeter wave (mmWave), a high-frequency band promising to revolutionize IoT connectivity by offering significantly higher bandwidth and lower latency. While still in its early stages of implementation, mmWave is poised to become a cornerstone of the next generation of IoT ecosystems. Millimeter …
Published in International Journal of Wireless Security and Networks · Vol. 3, Issue 1, 2025 · pp. 13–23 Read article
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Rocker Bogie System using RF Communication
Abstract: AbstractThe rocker-bogie system is a robot that can travel in rough terrain. Its mechanism helps in maintaining stability. It is a multispecialty robot that can be used for various applications. The use of Rocker-Bogie mechanism helps in maintaining the balance of the robot which is used to travel on an uneven surface, usually called as an All-Terrain Vehicular Robot. The conditions preferably needed for the robot to work are in …
Published in Journal of Electronic Design Technology · Vol. 10, Issue 2, 2019 · pp. 22–29 Read article
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Patch Antenna by using Tunable Metamaterial for Dual Band Application
Abstract: AbstractIn this paper, a novel compact microstrip antenna, designed on FR4 substrate, is proposed. Here, a compact Square patch antenna is designed in such a way that a layer of metal between the patch load and the radiating patch moreover, the ground which makes the antenna operate at a lower frequency and antenna at 2.418 GHz with the directivity and gain is 6.58 6dB and 2.935dB. The Tunable metamaterial is …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 3, 2018 · pp. 20–24 Read article
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Study on EBG Structures and Application in UWB Band Pass Filter
Abstract: EBG automation has turn into important development in the field of microwave and RF because of its exclusive band gap attribute at convinced frequency areas. The survey of this paper shows various EBG structure and its operations in tract with microstrip antenna and filters along with EBG structure is planned to procure solid UWB band pass filter. The counterfeit is performed by Agilent ADS software.
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 2, 2015 · pp. 5–8 Read article
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EBG Technology and Applications; A Review
Abstract: This present paper concentrates on applications of Electromagnetic band gap (EBG) technology that is operating at microwave and sub mm wave frequencies. Some of examples of Electromagnetic band gap configurations in the region of microwave are shown, that includes array antennas, high precision GPS, mobile telephony, wearable antennas and diplexing antennas. A 500 GHz dipole configuration and a novel heterodyne mixer are shown as examples for sub millimeter wave region. …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 1, 2015 · pp. 21–36 Read article
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A Low Power Variable Gain Amplifier for Biomedical Application
Abstract: This paper describes the design and simulation of low power variable gain amplifier used for biomedical application like hearing aid, Electronic Cardiograph and neural recording system. The MOS transistor is designed to operate in subthreshold region for low power application. The gain of amplifier is changed by selecting different values of input capacitor in the frequency range of 20 Hz–20 KHz. The simulated total power dissipation is 3µW. The gain …
Published in Journal of VLSI Design Tools and Technology · Vol. 4, Issue 3, 2014 · pp. 7–12 Read article
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Effect of Surface Spinal Stimulation on Spasticity in SCI: A Single Case Study
Abstract: Spasticity forms one of the major complications after a spinal cord injury. Various treatment approaches are used for its reduction. Surface spinal stimulation has been used in this case and its effect pre- and post-treatment have been compared. A 27-year-old male suffered a spinal cord injury of the level C4-C5 due to a bus accident, in which the bus had overturned. The patient is a follow-up case of C4-C5 discoligamentous …
Published in Research and Reviews: A Journal of Neuroscience · Vol. 2, Issue 3, 2012 · pp. 1–7 Read article
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A Survey on Ultra Low Power Design Techniques for IOT Application
Abstract: AbstractInternet of Things (IOT) is evolving as technology’s megatrend, unlocking new opportunities and questions for the semiconductor industry. IOT sensing and actuation devices essentially should be low cost and also should deliver a complete System on Chip (SOC) solution capable of computation, security and wireless communication at very low power levels. The sub-threshold operation, Radio Frequency (RF) redesign, and extreme optimization techniques can minimize power consumption of IOT devices. This …
Published in Current Trends in Information Technology · Vol. 7, Issue 3, 2017 · pp. 9–16 Read article
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Current Fed Push-Pull Converter for High Voltage Gain Applications
Abstract: AbstractAn isolated high step up voltage gain with appropriate duty ratio with application on energy storage system is proposed. As push pull converters are step down converters, here, this topology will help in step up the voltage. This converters semiconductor device maintains zero current switching (ZCS). Push pull converter has only two devices with common ground with source requiring simple gate driving circuitry.Keywords: Current fed push-pull, variable frequency modulation, zero …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 2, 2018 · pp. 33–42 Read article
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Self-similarities in Hilbert Envelope Energy Regions on Motion Waveforms Application in Detecting Motion Irregularities in Video Frames
Abstract: This paper introduces self-similar Hilbert envelope energy regions that are commonly found in oscillating spectral curves. The time-varying amplitudes and peak value frequencies in typical spectral curves reflect the response of a system to external stimuli. A Hilbert envelope is a smooth curve connected between spectral curve peak values. Each peak value on an envelope curve at time identifies an envelope-bounded region with interior area (called Hilbert envelope energy region …
Published in Trends in Opto-electro & Optical Communication · Vol. 14, Issue 3, 2024 · pp. 34–49 Read article
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Vibration Analysis of Functionally Graded Piezoelectric Actuators: A Comprehensive Review
Abstract: Recent research has been concentrated on a thorough investigation of the vibration evaluation of functionally graded piezoelectric materials (FGPM), shedding light on the potential for enhancing structural optimization and controlling deflections and vibrations. Functionally graded piezoelectric material is a type of advanced composite material possessing diverse characteristics that allow for customized mechanical and electrical responses. The existing body of academic work extensively addresses the vibration analysis of functionally graded piezoelectric …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 426–440 Read article
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Real-Time Ocean Monitoring and Early Warning Systems with IoT Technology
Abstract: The increasing frequency of extreme weather events, rising sea levels, and threats to marine biodiversity This paper explores the application of IoT in enhancing real-time ocean monitoring and early warning systems, focusing on the deployment of smart sensors, connected buoys, and data analytics to collect key parameters such as temperature, salinity, pH, and wave activity. To preserve and responsibly utilise the seas, oceans, and marine resources in support of sustainable …
Published in Journal of Instrumentation Technology & Innovations · Vol. 15, Issue 1, 2025 · pp. 13–24 Read article