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385 articles for “Frequencies Applications”
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Design and Analysis of Vibration Table for SMAW Welding
Abstract: The welding is the joining process and its joint quality and mechanical strengthbecome the necessities looking to the end application of the product. Welding defect like lack of penetration in welding is one of the critical defect and directly impacting the strength of joint and rejection. From the literature, it’s found that external controlled vibration is one of the solution for quality weld. The weld defect has beensignificantly minimize by …
Published in Journal of Experimental & Applied Mechanics · Vol. 14, Issue 1, 2023 · pp. 1–17 Read article
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Performance Evaluation of Adaptive MIMO-OFDM System Model for Wireless Networks
Abstract: Enormous growth of wireless technologies and research trends in networking has developed many useful applications. Wireless networks with various protocols and standards are huge in demand because of the expansion of internet of things (IoT). All wireless networks demand for high data rate, low energy consumption, higher throughput, more reliability, better quality of services (QoS) and quality of information (QoI). This paper presents multiple in multiple out (MIMO) orthogonal frequency …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 1, 2017 · pp. 17–23 Read article
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Impact of Sol–Gel Processing on Dielectric and Energy Storage Properties of BaTiO3 Nanoceramics
Abstract: Barium titanate (BaTiO3) is a widely studied ferroelectric material because of its high dielectric permittivity and strong potential for electrostatic energy storage applications. In this study, BaTiO3 nanoceramics were synthesized using a controlled sol–gel processing route to investigate the influence of synthesis conditions on their dielectric relaxation and energy storage performance. The synthesized powders were calcined and subsequently sintered at temperatures ranging from 1100°C to 1300°C. Structural analysis using X-ray …
Published in Research & Reviews : Journal of Physics · Vol. 15, Issue 2, 2026 · pp. 11–25 Read article
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Smart Shopping System Application based on RFID.”
Abstract: Recent events indicate that going shopping in malls has taken on a daily routine in large cities. After making a purchase, customers must stand in queue for a long time to pay the bill. The fundamental idea is to make regular shopping easier by reducing time spent and eliminating daily hassles like selecting the right item and waiting in big lines. Therefore, since RFID passive tags have a greater range, …
Published in Recent Trends in Sensor Research & Technology · Vol. 10, Issue 1, 2023 · pp. 8–14 Read article
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Establishment of A Set of Similarity Prerequisite Conditions for Low-Cost Similitude Design of Structural System
Abstract: Similitude theory and method is a branch of engineering to establish necessary and sufficient conditions for similarity among complex phenomena. It is of great significance to develop the theory and application method in a more comprehensive way so that the similitude theory can be widely applied to low-cost designs of modern complex structural systems When designing a similitude structural system with various loads and boundary conditions, including rotating machines, it …
Published in Journal of Production Research & Management · Vol. 15, Issue 3, 2025 · pp. 1–15 Read article
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Bandwidth and Return Loss Enhancement in Patch Antenna by Meta Material using at 2.62 GHz
Abstract: In this work, a rectangular micro strip patch antenna (RMPA) loaded with “Symmetric square Shapes Four Segments with circular rings structure” metamaterial structure is designed at a height 3.2 mm from ground plane by using CST-MWS software. The resonance frequency of the designed antenna is 2.62 GHz. The 10 dB impedance bandwidth of proposed antenna is increased up to 78.3 MHz. The return loss of the proposed antenna reduced to …
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 3, 2014 · pp. 33–37 Read article
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Machine Learning–Guided Cognitive RF System with Dynamic FFT Resolution and Multiplier Reconfiguration for Adaptive Anti-Jamming Communication
Abstract: This paper presents a hierarchical adaptive RF communication system that integrates signal quality-based pre- processing with machine learning-driven signal classification to achieve robust and resource-efficient operation in dynamic, interference-prone environments. Unlike prior art that addresses adaptive RF, ML classification, or anti-jamming individually, this work uniquely combines real-time SNR/RSSI-based signal strength estimation with dynamic FFT size selection (64-, 256- , or 512-point) and arithmetic-level multiplier reconfiguration (CORDIC, Distributed Arithmetic, and hybrid …
Published in International Journal of Radio Frequency Innovations · Vol. 4, Issue 1, 2026 Read article
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Use of Microwaves in Wireless Charging of Mobile Phone
Abstract: The foremost objective of this present scheme is to make the recharging of the mobile phones independent of their manufacturer and battery make. In this paper a new scheme has been made so as to make the recharging of the mobile phones is done by design as you talk in your mobile phone. This is done by use of microwaves. The microwave signal is transmitted from the transmitter along with …
Published in Journal of Microelectronics and Solid State Devices · Vol. 2, Issue 2, 2015 · pp. 21–25 Read article
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Development of 3D Printing Filaments from Industrial Waste Plastics
Abstract: The global plastic waste crisis has prompted innovative approaches to sustainable material reuse, particularly in additive manufacturing. Simultaneously, the accumulation of plastic waste presents significant environmental concerns. Recycling plastic into filament supports eco-friendly innovation and brings us closer to a circular economy where materials are reused instead of thrown away. This study investigates the development of 3D printing filaments from industrial waste plastics, including polypropylene (PP), acrylonitrile butadiene styrene (ABS), …
Published in International Journal of Energy and Thermal Applications · Vol. 3, Issue 1, 2025 · pp. 12–17 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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Advanced 4-Element UWB-MIMO Antenna Design: Achieving High Isolation and Multi-Band Rejection for Advanced Wireless Applications
Abstract: In this study, we present the design, fabrication, and analysis of a step-by-step Ultra-Wideband (UWB) Multi-Input Multi-Output (MIMO) antenna operating from 3 to 14 GHz. The antenna consists of four elements, each characterized by high isolation and equipped with four band-rejection features. These elements are implemented on a Rogers substrate with εr=3. Each antenna element is a modified rectangular patch, incorporating partial ground etching to achieve wider bandwidth. Two sets …
Published in Journal of Communication Engineering & Systems · Vol. 15, Issue 1, 2025 · pp. 40–62 Read article
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A CPW Fed Inverted E-Shape Microstrip Patch Antenna for Multi Band Applications
Abstract: In this paper a CPW fed multi band monopole antenna with inverted E-shape micro strip patch is presented for radar/satellite applications. Ansys soft HFSS simulator is used to simulate the antenna in this paper. The proposed antenna consists of inverted E shape patch including finite ground CPW feeding. The antenna is fabricated on 1.5 mm FR4 substrate which has dielectric constant of 4.4 and loss tangent of 0.02. The operating …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 3, 2015 · pp. 26–35 Read article
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Rectangular Micro Strip Patch Antenna Interconnected with Symmetrical Cut Hexagonal Shaped between Horizontal Lines Meta Material Structure Enhancement Bandwidth at 1.80 GHz
Abstract: This paper proposes a new generation of antenna that applies Metamaterial (MTM) properties at ground plane. The paper analyzes the performance of Microstrip Patch Antenna with and without using the MTM structure. Rectangular Microstrip Patch Antenna (RMPA) interconnected with symmetrical cut hexagonal shaped between horizontal lines MTM structure is proposed for enhancement of bandwidth and reduction of return loss at operating frequency of 1.80 GHz. The proposed antenna is designed …
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 3, 2014 · pp. 15–20 Read article
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Near Field Wireless Powering of Implantable Devices
Abstract: A new WPT system for biomedical applications has been investigated in this paper. First, an implantable receiving antenna with enhanced gain is studied. Then, a transmitting antenna array which can maximize the PTE of the WPT system is designed together with the receiving antenna and head model. Under the transmission distance of 150 mm, the PTE of the designed WPT system reaches a maximum value of 0.28% at the center …
Published in Journal of VLSI Design Tools and Technology · Vol. 9, Issue 1, 2019 · pp. 44–50 Read article
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Detecting Fake Accounts on Social Media Using Machine Learning
Abstract: The growing frequency of fake accounts on social media platforms underscores the critical necessity for effective detection methods. In response to this challenge, our study leverages state-of-the-art machine learning techniques to identify and counter deceptive entities effectively. By conducting a thorough analysis of social media data, our approach unveils intricate patterns indicative of fraudulent accounts, enabling proactive measures against them. Through the application of advanced algorithms, we present a comprehensive …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 11, Issue 2, 2024 · pp. 21–32 Read article
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Spike Detection and Processing of TDEM Signals using Wavelet Transform
Abstract: This paper presents a new method for spike detection, parameterization and processing in ground based Time Domain Electromagnetic (TDEM) signals. Time Domain Electromagnetic methods are used for mineral exploration by sub-surface conductivity measurement of Earth. The Earth’s response measured using inductive sensors are contaminated by spikes in form of sferics and due to load and phase shift in power distribution lines. The spikes present in the measured signal can significantly …
Published in Current Trends in Signal Processing · Vol. 2, Issue 1-3, 2012 · pp. 82–92 Read article
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Assessment of Milk Quality Optimization of Yogurt Fermentation
Abstract: In the creation of new products, yogurt makers need to prioritize consumer preferences to enhance their market share. An advanced prediction method will help in grasping the fundamental connection between consumer preferences and sensory attributes. This study introduces a new deep learning approach that employs an autoencoder to derive product features from expert-scored sensory attributes. These sensory features are then analyzed through support vector machine regression to align them with …
Published in Research and Reviews : Journal of Dairy Science and Technology · Vol. 13, Issue 2, 2024 · pp. 6–12 Read article
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Dielectric Studies on Magneto-elastomer Composites Filled with Soft Ferrites
Abstract: Magneto-elastomer composites are flexible magnetic composites which can be synthesized by incorporating ferrites into elastomers. These composite materials are in par with their ceramic counter parts and are potential substitute for ferrites in various applications. Advantage of these materials is the processability and mouldability into desired shapes. Dielectric property of elastomers is modified with the incorporation of soft ferrites like nickel ferrite. They can be used as microwave absorbing materials. …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 1, 2022 · pp. 1–11 Read article
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Review Paper On Lifi Technology
Abstract: Light Fidelity is the abbreviation for Light Fidelity. The concept is relatively new, having been introduced by German scientist Harald Haas at the 2011 TED Global Talk on Visible Light Communication (VLC). Li-Fi is a wireless optical networking system that transmits data using light emitting diodes (LEDs). Visible light communication (VLC) technology is referred to as Li-Fi. 802.15.7. IEEE 802.15.7 is a wireless communication technology based standard that is high-speed, …
Published in Journal of Microelectronics and Solid State Devices · Vol. 8, Issue 2, 2021 · pp. 1–6 Read article
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Spice Circuits for Optic Cellular Receiver Simulations
Abstract: A circuit-theoretic approach to the generation of equivalent circuit models of optoelectronic and integrated photonic receiver applications is presented, especially optical cellular receiver systems. In a conventional circuit, the parameters of nano-inductance, nano-capacitance, impedance and scattering (S) parameters can be effectively applied to the analog equivalent representation of a conventional circuit. In a fiber-optic system, those parameters can be used in an integrated photonics and optoelectronic and nanoelectronic circuit as …
Published in Trends in Opto-electro & Optical Communication · Vol. 16, Issue 2, 2026 Read article