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186 articles for “patch”
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Simulation And Analysis of Radio Frequency Energy Harvesting System Operating at 2.45 GHz Frequency
Abstract: — This paper proposed study of an RF energy harvesting system at 2.45 GHz using a rectifier and an antenna so called rectenna. Inset-fed micro-strip rectangular patch antenna array is fabricated. The rectifier circuit, employing Schottky diodes (HSMS-2850), converts AC power from the antenna to DC for RF detection. Analysis of the antenna's design and parameters such as directivity, return loss, gain, and VSWR is done using high-frequency simulator software …
Published in Journal of Microwave Engineering and Technologies · Vol. 11, Issue 1, 2024 · pp. 7–15 Read article
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Design and Analysis of Closed Flow System with Varying Various Parameters of Hydrodynamics for PEH
Abstract: In this work, a piezoelectric energy harvesting system is designed, which can vary different parameters for analyzing the output of PVDF (e.g. water flow rate, piezoelectric patch, piezoelectric circuit, pressure head and different configurations of installation of piezoelectric etc.). A prototype model is made of this system is made for experimental analysis. The analysis of the prototype is done by varying two parameters (i) Water flow rate (ii) Piezoelectric circuit. …
Published in Journal of Control & Instrumentation · Vol. 8, Issue 3, 2017 · pp. 30–37 Read article
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Bandwidth Enhancement of MPA using DGS
Abstract: In this paper, the authors proposed an MPA with DGS to enhance its parameters and mainly bandwidth of the antenna. To achieve a very important bandwidth enhancement the authors proposed a rectangular shaped symmetrical DGS in the ground plane. This DGS on the ground plane increases the fringing field which reluctantly increases the parasitic capacitance. This increases the coupling between patch and ground which make the bandwidth to increase from …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 1, 2016 · pp. 6–10 Read article
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Design of a Stacked Aperture Coupled Microstrip Antenna for UWB Applications
Abstract: The paper presents a stacked T-shaped Aperture coupled microstrip antenna designed for ultra-wide band wireless applications. The proposed UWB antenna covers two frequency bands as of 2.49 to 2.9 GHz and 6.85 to 20 GHz and used for the various applications like Bluetooth, Zig-Bee (2.4 GHz), C band (6 to 8 GHz), X band (8 to 12 GHz), Ku band (12 to 18 GHz) and Satellite communication. The stacked antenna …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 1, 2017 · pp. 12–16 Read article
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High Gain Antenna Array (2x1 and 4x1) Design for WLAN Application
Abstract: Micro-strip antennas became very popular in 1970s primarily for space borne applications. Today they are used for government and commercial applications. These antennas consist of a metallic patch on a grounded substrate. The metallic patch can take many different configurations. However, the rectangular and circular patches are most popular because of ease of analysis and fabrication, and their attractive radiation characteristics, especially low cross-polarization radiation. In high performance aircraft, spacecraft, …
Published in Journal of VLSI Design Tools and Technology · Vol. 8, Issue 2, 2018 · pp. 1–8 Read article
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A Review on Parasitically Coupled and a Direct Coupled Feed for a Microstrip Antenna Array
Abstract: Due to modern electronics, small size electronic systems have been increasing in integrated circuits and the physical size of systems is reduced. Hence, demand of small and low cost antennas has increased. Microstrip or patch antenna provides the lightweight, not expensive, and integration is easy. Microstrip antennas or patch antennas are one of the most attractive antennas for integrated systems and are widely used in wireless communication systems. This paper …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 1, 2018 · pp. 15–18 Read article
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Real-time DDoS Attack Prediction in SDN Environments Using Machine Learning
Abstract: The ever-growing reliance on sdn-based services necessitates robust security measures against Distributed Denial-of-Service (DDoS) attacks that threaten service availability. This project investigates the development of a real-time prediction system for DDoS attacks in sdn environments, leveraging the power of machine learning. The proposed system employs a Decision Tree classification algorithm implemented in Python. To ensure accurate attack identification, the system meticulously addresses data preprocessing challenges inherent in network traffic datasets. …
Published in Journal Of Network security · Vol. 13, Issue 1, 2025 · pp. 16–27 Read article
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Wideband Microstrip Slot Antenna Using Shape Blending Algorithm
Abstract: For the effective wireless communication over long distances, the antennas with wideband operation and narrow beam widths are the requirements for the evolving modern mobile devices. This paper presents the design and analysis of the wideband patch antenna with slot using shape blending algorithm. The major advantage of this algorithm is to optimize the shape of the radiating element by applying Heaviside function to improve the performance characteristics of the …
Published in Journal of Mechatronics and Automation · Vol. 9, Issue 1, 2022 · pp. 19–27 Read article
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Study of Bandwidth Enhancement of an S-band Microstrip Slot Antenna
Abstract: AbstractRelative study of rectangular patch, U-slot patch and E-slot patch antenna is conferred in this paper. The operating frequency is selected from S-band (2 GHz–4 GHz) which is relevant for Industrial science and medical (ISM) band, Bluetooth communication as well as wireless land area network (WLAN). High-frequency structure simulator (HFSS) software is used to investigate the results of the antennas. Microstrip patch antenna (MSPA) experience low Gain and narrow bandwidth. …
Published in Journal of Microwave Engineering and Technologies · Vol. 6, Issue 3, 2019 · pp. 23–30 Read article
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Planar UWB Antenna for 5 GHz ISM Band
Abstract: AbstractThe Ultra-Wide Band (UWB) technology used for high data rate with low power levels for many wide applications which mainly includes short range, wide bandwidth communications. The Planar UWB antenna is designed for 5GHz Industrial, Scientific and Medical (ISM) band. These bands are specially dedicated to industrial, scientific and medical applications other than telecommunications. ISM applications like Microwave ovens, RF process heating and medical diathermy application. Proposed antenna has VSWR …
Published in Journal of Microwave Engineering and Technologies · Vol. 7, Issue 2, 2020 · pp. 1–6 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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Clinical Observation of Unani Drugs Safoof-E-Bars and Majoon Dabidul Ward in Treatment of Vitiligo
Abstract: Unani medicine is very good, perfect and effective medicine, especially for vitiligo, without side effect and with low cost. After the observation of many vitiligo patients, I have made Unani medicine for vitiligo, which is very safe, effective, relieving and affordable for anyone. I observed the patients’ complaint and according to that, used drug of choice in Unani medicine for vitiligo. I have treated a 17 year old female patient …
Published in Research & Reviews : A Journal of Unani, Siddha and Homeopathy · Vol. 7, Issue 3, 2020 · pp. 12–14 Read article
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Modification of Microstrip Antenna by “Hexagonal Shaped” Metamaterial for Wireless Applications
Abstract: AbstractIn this proposed paper, a split ring “Hexagonal Shaped” metamaterial structure is used to modify the factors of antenna. The compact patch antennas (CPA) are directive and their size is small in surroundings. These antennas are sources to achieve the recent requirements. These antennas are desired to be possessing less return loss, better directivity, higher bandwidth and compact size at the operating frequency when used in any communicating operation. This …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 3, 2018 · pp. 25–29 Read article
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Design of a Multiband Antenna with Rectangular and Circular Slots for 5G Mobile Technology
Abstract: AbstractThis paper presents a microstrip patch antenna for 5G mobile communication. Requests for mobile communication arise because of rapid growth in mobile users. So, users need more features like high data rate, good communication and reduced traffic on their mobile phones. These requirements can be met using 5G technology. 5G technology offers very high bandwidth, reduced latency, broadband spectrum, improved QoS and a better capacity. 5G operates from 24 GHz …
Published in Journal of Microwave Engineering and Technologies · Vol. 7, Issue 2, 2020 · pp. 30–34 Read article
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Design of a Fractal Aperture Coupled Microstrip Antenna for UWB Applications
Abstract: Ultra wide band frequency allocation of 5.3–9.2 GHz spectrum by Federal Communications Commission (FCC) presented myriad applications of exciting opportunities and challenges for design in the communication arena, including antenna design. The compact antenna designs with operating bandwidths of more than 100% are a challenging demand for the current wireless scenario. This can be easily met with fractal boundaries by using wide slot antennas. In this paper, fractal slot antenna …
Published in Journal of Microwave Engineering and Technologies · Vol. 4, Issue 1, 2017 · pp. 19–22 Read article
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Design Optimization of Microstrip Antenna with EBG and DGS Using the Genetic Algorithm to Reduce the Mutual Coupling
Abstract: The purpose of this paper is to construct, create, and reproduction of different antenna structures using electromagnetic band gap (EBG) materials and defected ground structures (DGS). Microstrip antennas are processed in order to improve performance by changing the shape of the geometry of the antenna, in particular to reduce the mutual coupling between the elements. The propagation of electromagnetic waves in a specified frequency range have the unique ability to …
Published in Journal of Microwave Engineering and Technologies · Vol. 3, Issue 1, 2016 · pp. 11–30 Read article
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RF Energy Harvesting from Wi-Fi Router in 2.45 GHz ISM Band
Abstract: In this paper, an experimental RF energy harvesting system using rectifying antenna (rectenna) to harvest ambient energy from Wi-Fi at 2.45 GHz is presented. The proposed circuit is a combination of RMPA, followed by a third order stepped impedance low-pass filter, matching network and rectifier using Schottky diode for microwave (RF) to DC conversion. The performance of the rectenna is simulated by electromagnetic simulator computer simulation technology (CST) microwave studio. …
Published in Journal of Microwave Engineering and Technologies · Vol. 2, Issue 3, 2015 · pp. 21–25 Read article
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Static and Dynamic Analysis for Optimum PZT Positioning and Optimum Voltage in a Delaminated Smart Composite Beam
Abstract: This paper conducts a comprehensive static and dynamic analysis of a delaminated composite beam with and without a piezoelectric layer making use of the principle of minimum potential energy. A new finite element model for composite laminate with delamination defect using cohesive zone method is developed using ANSYS APDL. A lead zirconate titanate (PZT) patch is embedded over the delaminated model following the results obtained from static analysis. The work …
Published in Journal of Polymer & Composites · Vol. 11, Issue 2, 2023 · pp. 13–27 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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Secure Forge: Deepfake Image Detection Using Vision Transformers
Abstract: Deepfake technologies have become a major risk to the credibility and trustworthiness of digital visual information. Using powerful generative models like GANs and autoencoders, deepfakes can generate highly realistic fake videos and images, resulting in misinformation, identity theft, and public loss of trust in digital media. Classic Convolutional Neural Networks (CNNs) while being highly effective in initial-stage, deepfake detection tend to be limited by their local receptive fields and dependency …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 12, Issue 3, 2025 · pp. 32–45 Read article