11 publications
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AI-Optimized Reconfigurable Microstrip Bandpass Filters for DynamicSpectrum Access in 6G NetworksBy Vaibhav Godase, Shilpa Shinde
Abstract: The evolution toward sixth generation (6G) wireless networks introduces unprecedented demands on spectral efficiency, ultra-low latency, and real-time adaptability to dynamic radio environments. Central to this transformation is the requirement for intelligent, spectrum-agile radio front ends that can seamlessly operate across heterogeneous frequency bands. Dynamic Spectrum Access (DSA) addresses this challenge by enabling transceivers to autonomously detect, evaluate, and utilize the most suitable spectrum opportunities. The realization of DSA in …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 2, 2025 · pp. 30–38 Read article →
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Performance Evaluation of EV Charging Station with Bidirectional Power Flow for Grid Support ApplicationsBy Amit pandhare, Aditya Kumbhar, Vaibhav Godase
Abstract: The swift increase in the number of electric vehicles (EVs) brings considerable prospects and difficulties for contemporary power distribution networks. This paper presents the performance evaluation of a 20 kW bidirectional EV charging station designed to facilitate both Grid-to-Vehicle (G2V) and Vehicle-to-Grid (V2G) power flow for enhanced smart grid support applications. The proposed topology integrates an AC/DC bidirectional converter interfaced to the 415 V, 50 Hz three-phase utility grid through …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 12, Issue 1, 2026 · pp. 21–28 Read article →
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Bidirectional DC–DC Converter Design and Control for EV Charging Stations with Grid Support CapabilityBy Aditya Kumbhar, Amit pandhare, Vaibhav Godase
Abstract: The rapid proliferation of electric vehicles (EVs) has intensified the demand for advanced charging infrastructure capable of delivering reliable, efficient, and grid-aware power management. Conventional unidirectional chargers are inadequate for modern smart-grid applications, as they preclude the utilization of stored battery energy for grid support functions. This paper presents the design, mathematical modeling, and simulation-based validation of a non-isolated bidirectional DC–DC buck–boost converter rated at 20 kW for EV charging …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 12, Issue 1, 2026 Read article →
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An Energy-Efficient CMOS Analog Front-End for Wearable Biomedical Monitoring ApplicationsBy Rahul Ghodake, Vaibhav Godase, Soham Modi, Vishal Misal
Abstract: Because wearable biomedical monitoring technologies allow for continuous, real-time, and remote measurement of physiological parameters, they are quickly becoming a key component of contemporary healthcare. These systems place stringent demands on the analog front-end (AFE), which must accurately acquire and condition extremely low-amplitude biopotential signals such as electrocardiogram (ECG), electroencephalogram (EEG), and electromyogram (EMG) while operating under severe power and size constraints. This paper presents the design and simulation of …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 12, Issue 1, 2026 · pp. 1–10 Read article →
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A Low-Power Chopper-Stabilized Amplifier forHigh-Resolution Biomedical Signal AcquisitionBy Rahul Ghodake, Vaibhav Godase
Abstract: Biomedical signal acquisition systems such as ECG, EEG, and EMG require analog front-end (AFE) circuits capable of amplifying extremely small, low-frequency physiological signals in the presence of noise, interference, and motion-induced artifacts. These signals usually fall within the sub-millivolt range and are highly susceptible to low-frequency noise and amplifier offset. Chopper-stabilized amplifiers offer a compelling solution by suppressing flicker noise (1/f noise) and minimizing input- referred offset, especially for low-frequency …
Published in International Journal of Embedded Systems and Emerging Technologies · Vol. 12, Issue 1, 2026 · pp. 1–14 Read article →
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Interfacial Engineering and Performance Optimization of Jute-Fiber-Reinforced Epoxy LaminatesBy Vaibhav Godase, Amit pandhare, Shivam Pandhare
Abstract: The increasing environmental concerns associated with synthetic fiber reinforced polymer composites have driven substantial research interest toward naturally derived, biodegradable fiber alternatives. This study presents a comprehensive mechanical and thermal characterization of jute fiber reinforced epoxy composites fabricated via hand lay-up followed by compression molding. Jute fibers were subjected to alkali treatment using 5 wt% sodium hydroxide (NaOH) solution for 4 hours at ambient temperature to enhance fiber–matrix interfacial bonding …
Published in International Journal of Polymer Science and Engineering · Vol. 12, Issue 1, 2026 · pp. 52–64 Read article →
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Mechanical and Thermal Characterization of Natural Fiber-Reinforced Epoxy Composites for Structural ApplicationsBy Vaibhav Godase, Amit pandhare, Shivam Pandhare
Abstract: Natural fiber reinforced polymer (NFRP) composites have emerged as promising alternatives to conventional synthetic fiber composites owing to their environmental sustainability, low density, and competitive specific mechanical properties. However, a comprehensive and simultaneous evaluation of both mechanical and thermal performance of jute/sisal hybrid natural fiber epoxy composites under systematic fiber treatment conditions remains insufficiently addressed in the literature. The present study investigates the mechanical and thermal characterization of jute and …
Published in International Journal of Composite Materials and Matrices · Vol. 12, Issue 1, 2026 · pp. 37–48 Read article →
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Systematic Review on Advances in Energy-Efficient RF Circuits and Sustainable Microwave Systems for Green MicrowaveEngineeringBy Soham Modi, Vaibhav Godase
Abstract: The increasing global demand for sustainable technologies has catalyzed innovation in energy-efficient radio frequency (RF) and microwave systems. This paper explores the principles,methodologies, and advancements underpinning green microwave engineering, with a particularfocus on the design and optimization of energy-efficient RF circuits. A systematic literature reviewwas conducted, analyzing peer-reviewed publications, technical reports, and case studies to assesscurrent progress and identify persistent challenges. Key findings reveal that low-power circuitdesign techniques, multi-source energy …
Published in International Journal of Analog Integrated Circuits · Vol. 11, Issue 2, 2025 Read article →
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Systematic Review on Advances in Energy-Efficient RF Circuits and Sustainable Microwave Systems for Green MicrowaveEngineeringBy Soham Modi, Vaibhav Godase
Abstract: The increasing global demand for sustainable technologies has catalyzed innovation in energy-efficient radio frequency (RF) and microwave systems. This paper explores the principles,methodologies, and advancements underpinning green microwave engineering, with a particularfocus on the design and optimization of energy-efficient RF circuits. A systematic literature reviewwas conducted, analyzing peer-reviewed publications, technical reports, and case studies to assesscurrent progress and identify persistent challenges. Key findings reveal that low-power circuitdesign techniques, multi-source energy …
Published in International Journal of Analog Integrated Circuits · Vol. 11, Issue 2, 2025 Read article →
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Design of a Low-Power CMOS Operational Amplifier for Portable BiomedicalApplications.By Rahul Ghodake, Vaibhav Godase, Soham Modi, Vishal Misal
Abstract: Portable biomedical devices such as ECG, EEG, and wearable health monitors require analogfront-end circuits that operate at extremely low power while maintaining sufficient gain,bandwidth, and noise performance. Among these circuits, the operational amplifier plays acritical role in signal amplification and conditioning. This paper presents the design andanalysis of a low-power CMOS operational amplifier optimized for portable biomedicalapplications. The proposed amplifier employs a two-stage architecture using power-efficientbiasing techniques to achieve low …
Published in International Journal of Analog Integrated Circuits · Vol. 11, Issue 2, 2025 · pp. 19–25 Read article →
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Reactive Separation for Biodiesel Purification Using Hybrid Membrane SystemsBy Vaibhav Godase, Rajesh Khiste, Vyankatesh Palimkar
Abstract: Biodiesel produced through transesterification typically contains several impurities, including residual glycerol, unreacted methanol, soaps, water and homogeneous catalysts, all of which reduce fuel quality and hinder compliance with EN 14214 and ASTM D6751 standards. Conventional purification techniques such as water washing, centrifugation and vacuum distillation are energy-intensive, generate large volumes of wastewater and often fail to efficiently remove polar contaminants. To overcome these limitations, this study examines a reactive separation …
Published in International Journal of Chemical Separation Technology · Vol. 11, Issue 2, 2025 · pp. 17–30 Read article →