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166 articles for “resonant frequency”
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Influence of Polymeric Materials on Osseointegration and Stability of Dental Implants: An In-vivo Resonance Frequency Analysis
Abstract: Osseointegration, the successful integration of dental implants with surrounding bone tissue, is crucial for long-term implant stability. Resonance frequency analysis (RFA) provides a valuable tool for assessing implant stability. This in-vivo study investigates the potential role of polymeric materials used in dental implants, such as surface coatings or membranes, in influencing osseointegration and RFA-measured stability. By analysing the impact of these polymers on factors like cell adhesion, proliferation, and differentiation …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 1051–1057 Read article
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Design and Analysis of MEMS based Piezoelectric Accelerometer Having Square Shaped Proof Mass
Abstract: In any spacecraft launching program, the most prominent issue is to locate the spacecraft or satellite, in particular orbit of any particular planet. Now, while making the position of that spacecraft in space, abrupt changes in velocity occur and these velocity changes can break the controlling circuitry of the system since the velocity changes occur at very high environmental pressure. The designed device converts the deflections due to mentioned pressure …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 72–78 Read article
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Split Ring Resonator Based Dual Frequency Microstrip Patch Antenna For Wireless Applications
Abstract: The objective of the work is to design a compact dual frequency microstrip antenna (MSA) at GSM 1800 MHz and ISM (2.4 GHz). The proposed MSA incorporates a rectangular patch with an inverted U slot printed on the top of RT duroid 5880 substrate with thickness of 0.8mm and dielectric constant of 2.2. The dimensions of the patch are optimized as 45x 54 mm2. It is fed by coaxial feeding. …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 1–14 Read article
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Comparative Study of Microstrip Rectangular Patch Antenna on different substrates for Strain Sensing Applications
Abstract: The feasibility of applying patch antennas for strain sensing is investigated. The resonant frequency of microstrip patch antenna is calculated by the dimensions of its patch. In this work, three types of microstrip patch antennas are developed using three different substrates FR4, RT Duroid 5880 and Polyimide. This paper describes the simulation of a slotted rectangular microstrip patch antenna for strain measurement for three different materials. The microstrip antenna is …
Published in Recent Trends in Sensor Research & Technology · Vol. 3, Issue 1, 2016 · pp. 14–20 Read article
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Design and Performance Analysis of Microwave Filters and Resonators for High-Frequency Systems
Abstract: Microwave filters and resonators are fundamental components in high-frequency systems, playing a crucial role in signal selection, interference suppression, and frequency stabilization. This review presents a detailed analysis of design methodologies and performance characteristics of microwave filters and resonators used in modern communication and radar applications. Various filter topologies, including low-pass, high- pass, band-pass, and band-stop configurations, are examined with respect to their frequency response, insertion loss, selectivity, and bandwidth. …
Published in Journal of Microwave Engineering and Technologies · Vol. 13, Issue 1, 2026 · pp. 8–16 Read article
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New Solution Technique for the Frequency and Transient Response of Transformer Windings with All Inter-Turn Mutual Inductances and Capacitances Included
Abstract: This paper addresses the frequency response, the identification of the resonance frequencies as well as the transient response of transformer windings taking into account all possible inter-turn mutual inductances and capacitances. The mutual inductances and capacitances between any turn to all other turns, i.e. not only the immediately adjacent ones, are considered. The analysis starts with writing the set of simultaneous differential equations relating the currents and voltages within the …
Published in Trends in Electrical Engineering · Vol. 3, Issue 1, 2013 · pp. 22–41 Read article
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New Solution Technique for the Frequency and Transient Response of Transformer Windings with All Inter-Turn Mutual Inductances and Capacitances Included
Abstract: This paper addresses the frequency response, the identification of the resonance frequencies as well as the transient response of transformer windings taking into account all possible inter-turn mutual inductances and capacitances. The mutual inductances and capacitances between any turn to all other turns, i.e., not only the immediately adjacent ones, are considered. The analysis starts with writing the set of simultaneous differential equations relating the currents and voltages within the …
Published in Trends in Electrical Engineering · Vol. 3, Issue 3, 2013 · pp. 29–50 Read article
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Study Effect of Position of Fixed Magnet on Performance of VEH Device Working on Electromagnetic Principal
Abstract: Vibration energy harvesting (VEH) is one of key source of power for remote locations. VEH device gives maximum output at its natural frequency matching with excitation frequency. So, it is suitable for standalone frequency, gives rise to increase band widening efforts. To achieve resonance, stiffness or moving mass is to be changed. Changing of mass during operation is difficult to achieve. Repulsive and attractive force between magnets can be varied …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 1, 2017 · pp. 6–11 Read article
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Quartz Crystal for Thin Film Thickness Measurement using Embedded Software (PSoC)
Abstract: Programmable System on Chip (PSoC) based embedded read-out design for Quartz crystal which measures thickness of a thin film during deposition has been describe in this paper. Excited quartz sensor to its resonance frequency of 5 MHz, kept nearby the substrate measures the deposited film thickness by monitoring change in quartz resonance frequency. The change in the quartz crystal resonance frequency due to deposition decreases linearly with thickness. The change …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 1, Issue 3, 2013 · pp. 17–23 Read article
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Effect of Partial Ground Plane on the Microstrip Patch Antenna Performance for Wireless Sensor Networks
Abstract: Wireless sensor networks have a number of tiny nodes. Each node has the ability to communicate with its neighbors. The communication range depends on the type of antenna used. This paper analyzes the performance of microstrip patch antenna which suppresses the surface waves from the edges of the ground-plane of the substrate. The microstrip patch antenna is designed using a substrate of dielectric constant εr = 2.2 and loss tangent …
Published in Journal of Electronic Design Technology · Vol. 4, Issue 3, 2013 · pp. 5–9 Read article
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Effects of Variation of Injection Current and Differential Gain on 450 nm InGaN True Blue Semiconductor Laser
Abstract: AbstractIn this work, the performance analysis of a designed 450 nm InGaN True Blue Semiconductor Laser has been presented by varying injection current and differential gain. The study has been divided into three major segments; the first of which deals with changes in carrier density, photon density and output power with variation of injection current. A maximum output power of 182.6 mW is obtained for 90 mA injection current and …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 1, 2013 · pp. 18–23 Read article
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Characterization of Dielectric Resonator Antenna (DRA) for Broadband Applications: An Overview
Abstract: This article presents a brief review on realization techniques of broadband spectrum using Dielectric Resonators (DRs). Dielectric materials have attractive features in millimeter (mm) wave regions. In this article, attention has been focused on broadband design techniques using DRAs. The dielectric resonators possessing multi-resonant frequencies have been used for the purpose. These multi-resonant frequencies could be merged together to produce the required broadband spectrum. The primary goal of this review …
Published in Journal of Electronic Design Technology · Vol. 3, Issue 1-3, 2012 · pp. 6–14 Read article
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Analysis of Modulation Response of a 450 nm True Blue Semiconductor Laser by Varying Differential Gain
Abstract: AbstractIn this work the analysis of modulation response of a 450 nm InGaN based multi-quantum well (MQW) true blue semiconductor laser have been presented. The internal designing of 450 nm blue laser has been done before. but the desired wavelength of 450 nm was obtained by adjusting the exact concentration of In0.211Ga0.789N/Al0.07Ga0.93N in this work. The effects on modulation response by varying the differential gain have been observed. Also, the …
Published in Trends in Opto-electro & Optical Communication · Vol. 5, Issue 1, 2015 · pp. 1–8 Read article
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Performance Analysis of MEMS-based Ultrasonic Transducer with Different Membrane Materials
Abstract: Microelectromechanical systems (MEMS)-based capacitive micromachined ultrasonic transducer (CMUT) follows the reciprocity principle in the same way as piezoelectric transducers and has proven to be a good alternative to conventional piezoelectric transducers in many aspects such as sensitivity, transduction efficiency and bandwidth. CMUT transducers like piezoelectric transducers operate on resonance frequency to get possible ultrasound output, and high sensitivity in reception. The performance of the CMUT is highly affected by material …
Published in Recent Trends in Sensor Research & Technology · Vol. 1, Issue 3, 2014 · pp. 1–9 Read article
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Improved Performance Characteristics of A Designed 450 nm True Blue Laser Using InGaN/AlGaN Materials
Abstract: AbstractIn this work, the characteristics of a designed 450 nm true blue semiconductor laser are presented. Performance and optimizations of the designed laser are presented using InGaN/AlGaN active layer materials. A maximum optical output power of the laser is obtained as 147.48 mW for 93 mA injection current and 1 × 10−16 cm2 differential gain, where, the threshold current is 9.3 mA. The modal gain is calculated as 69.774 cm−1 …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 1, 2013 · pp. 24–30 Read article
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Analysis of N-Slot Loaded Patch Antenna for Tripple Band Operation
Abstract: ABSTRACT In this paper, the analysis of N-slot loaded microstrip antenna having single and double dielectric layer with coaxial feeding is presented using circuit model analysis. The antenna gives triple resonance and the separation between these resonances depends on the dimension of the slot. This antenna gives wide bandwidth for all three resonant frequencies for single dielectric and gives four bandwidths for double dielectric layer. It is observed that the …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 3, 2012 · pp. 11–19 Read article
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Effects of Variation of Active Region Radius on the Performance Characteristics of a Designed 1550 nm Al0.09Ga0.38In0.53As/InP MQW VCSEL
Abstract: AbstractIn this work, the performance characteristics of a designed Al0.09Ga0.38In0.53As/InP based 1550 nm top emitting multi quantum well (MQW) vertical cavity surface emitting laser (VCSEL) has been obtained. By evaluating the attained result of different parameters of selected MQW VCSEL the peak material gain is obtained as 1652.3 cm-1. For 6.1 mA of injection current and 5.65 µm of active region radius, the optical output power of 31.37 dBm and …
Published in Trends in Opto-electro & Optical Communication · Vol. 4, Issue 3, 2014 · pp. 8–13 Read article
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The Transient Response and Frequency Characteristics of Power Transformers having Non-uniform Winding Insulation
Abstract: This paper presents a Laplace-domain distributed-parameter technique for analyzing the transient and frequency response of power transformers having non-uniform winding insulation. Stronger winding insulation near the windings source side terminals is usually applied in order to mitigate the concentration of the transient voltage stresses close to these locations. This will result in a location-dependent inter-turn capacitance distribution. The suggested procedure for analyzing such windings is based on the cascade connection …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 1, 2014 · pp. 37–52 Read article
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Performance Analysis of a 1550nm MQW VCSEL by Varying Injection Current
Abstract: AbstractIn this work, the performance of a 1550nm top emitting multi quantum well (MQW) vertical cavity surface emitting laser (VCSEL) has been obtained for the selected quaternary compound In0.53Ga0.47As0.88P0.12 quantum well material the peak material gain is obtained as 1425cm-1. The optical output power of 31.35dBm and the resonance frequency of 5.8GHz are obtained at 6.1mA of injection current. Further by increasing the injection current up to 12mA a maximum …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 2, 2013 · pp. 25–29 Read article
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Optimized Performance Characteristics of a 450 nm Semiconductor Laser by Varying Differential Gain
Abstract: AbstractIn this work, the effects on the performance characteristics of a true-blue 3QW separate confinement heterostrcture edge-emitting laser are presented by varying differential gain. At the temperature of 300 K, the threshold current of the laser is . The peak material gain for the designed laser is obtained as and further used for the analysis of the performance characteristics of the designed double-heterostructure laser for the variation of differential gain. …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 3, 2013 · pp. 26–35 Read article