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Department of Electrical and Electronics Engineering: Recent submissions

Now showing items 261-280 of 2012

Implementation of Lyapunov Function-Based Hybrid Controller in Semi-Quadratic Buck-Boost Converter

Kumar, Rajneesh (IEEE, 2023-11)

This article presents a novel Semi-Quadratic buckboost converter (SQBuBoC) designed to integrate in many applications with a wide range of output voltage such as photovoltaic systems. The efficient control and energy ...
Designing a Fuzzy Logic Controller for Soft-Switched Quadratic Boost Converter

Kumar, Rajneesh (IEEE, 2023)

This paper introduces of successful implementation of fuzzy logic controller (FLC) structure for an active clamp-coupled inductor-based soft-switched Quadratic Boost Converter. This proposed method aims to address several ...
A new soft-switching high step-up DC–DC converter with low voltage stress

Kumar, Rajneesh (Wiley, 2024-06)

This paper proposes a new high step-up DC–DC converter with zero input current ripple for renewable energy sources applications, such as fuel cells. In this topology, a coupled inductor and a multiplier cell are used to ...
Enhanced Performance of Cuk and Boost–Based High-Gain Step-Up DC/DC Converter

Kumar, Rajneesh (Wiley, 2024-11)

This article presents a high-gain step-up DC/DC converter based on the Cuk topology for renewable energy applications. The converter employs an auxiliary circuit to achieve less input current ripple, significantly reducing ...
Controller Design for High Gain Converters Having Non-Minimum Phase Issues

Kumar, Rajneesh (IEEE, 2024)

This paper discusses the development of a Linear Quadratic Regulator (LQR) control for switching converters with non-minimum phase characteristics. It introduces a feedback loop with a Kalman filter to address observability ...
Ultra-high voltage gain achieved with quadratic DC/DC converter design

Kumar, Rajneesh (Springer Nature, 2024-10)

This work introduces a novel DC/DC converter with an incredibly high voltage gain, specifically designed for renewable energy generating systems. The proposed circuit features a coupled inductor integrated with a quadratic ...
Advancing renewable energy: A quadratic high-efficiency high gain step-up DC/DC converter

Kumar, Rajneesh (Elsevier, 2024-12)

Presenting a new high-gain converter that incorporates a coupled inductor, this paper offers a range of advantages over existing designs. The circuit features a simple structure with two cascade semi-stages, two power ...
A Terahertz Metasurface Based Refractive Index Sensor

Singhal, Rahul (IEEE, 2022)

The proposed dual-layer highly coupled patch metasurface terahertz sensor achieves a maximum sensitivity of 0.65 THz/RIU, figure-of-merit of 1.828 RIU-l in the sample refractive-index from 1.6-1.7, with quality factor of ...
Performance Analysis of Traditional Band Pass/Band Stop Frequency Selective Surfaces for Distinct Frequency Domains of Electromagnetic Spectrum

Singhal, Rahul (IEEE, 2022)

Conventional square loop (SL) and complementary square loop (CSL) based frequency selective surfaces (FSSs) for distinct frequency range are designed, analyzed and compared in this paper. The SL and CSL type FSSs are ...
Planar X-band reflecting surfaces based on rhombic loop pair

Singhal, Rahul (IEEE, 2022)

This paper presents design and analysis of two band stop FSSs offering wider band rejection along with polarization independence and linear reflection phase characteristics separately. The polarization dependent vertical ...
High-Electron-Mobility Transistor-Inspired Freestanding AlGaN/GaN/AlN Optical Waveguide for High-Pressure Sensing Applications

Singhal, Rahul (Wiley, 2023-01)

Herein, a high-pressure sensor based on freestanding high-electron-mobility transistor (HEMT)-inspired optical waveguide comprising AlGaN/GaN/AlN layers on silicon carbide (SiC) substrate is proposed and studied for harsh ...
Probe-Fed Polygonal Patch UWB Antennas

Singhal, Rahul (Intecopen, 2023-03)

The chapter deals with the design of probe-fed planar antennas to operate at wider bands and techniques to improve peak or boresight gain using reflectors. The phenomenon of frequency excitation in dual-band, that is, ...
Performance analysis of frequency selective reflectors based on rectangular loop pair for wideband applications

Singhal, Rahul (Elsevier, 2023-07)

This paper presents performance analysis of single layered bandstop frequency selective surfaces (FSSs) for C-band and ultra-wideband (UWB) frequency ranges respectively. These FSSs are based on polarization dependent (PD) ...
Electromagnetic Scattering Analysis of Conventional Frequency Selective Surfaces for Terahertz Applications

Singhal, Rahul (IEEE, 2023)

Conventional designs of arrays of metallo-dielectric frequency selective surface (FSS) for terahertz (THz) frequency range such as square conducting pads (Pixels), metallic mesh, mesh-loop (ML), square loop (SL) and ...
Performance Comparison of Loop Based Polarization Dependent/ Independent Reflectors for Microwave Frequency Bands

Singhal, Rahul (IEEE, 2023)

This paper presents performance analysis of Frequency selective reflecting surfaces (FSSs) based on rectangular, elliptical and rhombic loop unit elements respectively. Two orthogonally oriented configurations of polarization ...
Freestanding HEMT Inspired GaN based Optical Pressure Sensor With Grating Coupler

Singhal, Rahul (IEEE, 2024-10)

One key challenge encountered by photonic integrated circuit is to couple light to and from optical fibers efficiently. The standard fiber used for telecommunication or data communication is single-mode fiber (SMF), which ...
Gain Enhancement of Triangular Slot X-band Antenna Using Rhombic Loop Frequency Selective Surfaces

Singhal, Rahul (Springer, 2024-04)

The paper presents boresight gain enhancement of a microstrip fed X-band triangular slot antenna using rhombic loop (RL) based frequency selective surfaces (FSSs). Two single side printed orthogonal layers of arrays of ...
Investigations on relevance of angular stability and polarization independence of frequency selective reflector in planar antenna gain enhancement

Singhal, Rahul (Taylor & Francis, 2024-05)

The relevance of angular stability (AS) and polarization independence (PI) is investigated by rotating the frequency selective reflectors (FSRs) kept behind a 10 GHz triangular slot antenna in orthogonal directions. Three ...
Gain enhancement of ultra-wideband hexagonal slot antenna using tessellated rhombic loops based reflector

Singhal, Rahul (De Gruyter, 2024-02)

A simple technique for gain enhancement of irregular hexagonal shaped ultra-wide band (UWB) slot antenna by inclusion of closely packed tessellated rhombic loop (TRL) based FSS is presented in this paper. The slot antenna ...
Single crystalline Ge thin film growth on c-plane sapphire substrates by molecular beam epitaxy (MBE)

Kumar, Rahul (RSC, 2022-04)

Single crystalline Ge has been grown on c-plane sapphire substrates by molecular beam epitaxy. Direct growth of Ge on sapphire results in three-dimensional (3D) Ge islands, two growth directions, more than one primary ...

Now showing items 261-280 of 2012

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