https://orcid.org/0000-0003-1761-217X
The current issue of the IETE Journal of Research (Vol. 67, No. 3, May–June 2021) contains 13 articles. These articles present ongoing research and developments taking place in the broad areas of Microwave Engineering, Signal Processing, Electrical Engineering, Microelectronics and Power Electronics.
The paper titled “A Miniaturized Band-Reject Filter Using Metamaterial Structures on Silicon Substrate for X-Band Application” gives the design of a band-reject filter in the X-band based on series connected complementary split ring resonators. Its main feature is the compact dimensions. The design providing a fabrication advantage is discussed. The paper provides an equivalent circuit model and parametric analysis of the filter characteristics along with circuit simulation studies. The fabricated structure is analyzed for its performance with measurement of S-parameters and compared with the simulation results.
In “A Novel and Efficient Reader-to-Reader and Tag-to-Tag Anti-Collision Protocol”, a communication protocol is presented to reduce tag-to-tag collisions and reader-to-reader collisions in RFID networks. These collisions affect communication efficiency for applications related to location tracking, record management, etc. The protocol addresses the issue of inefficient channel distribution by a method that removes reader-to-reader collisions. The protocol design is based on simulated annealing approach and its performance is compared with other protocols in terms of delay, number of packet collisions, idle cycles and time cycles to bring out the efficacy of the protocol.
The following paper on “An Electronically Controllable Fractional Multivibrator,” presents the circuit design of a fractional multivibrator using a fractional capacitor. The topology allows for independent electronic control of the output waveform parameters and provides higher oscillation frequency than a regular multivibrator and thereby allows greater flexibility of operation. The proposed circuit is studied through SPICE simulation and compared with experimental studies on commercial devices. These results are presented, and inferences are drawn regarding the efficacy of the design.
In the paper “Design of CNTFET-based Current-mode Multi-input m:3 (4 ≤ m≤ 7) Counters,” the design of current-mode counters is presented with use of carbon nanotube FET (CNTFET). The function of a counter is relevant for basic arithmetic operations. The paper discusses two design approaches that are simulated and analyzed in terms of delay of operation, power consumption efficiency and other parameters. These are also compared with other methods from the literature to bring out the design efficacy.
The next paper on “Experimental Investigations on Single-Phase Shunt APF to Mitigate Current Harmonics and Switching Frequency Problems Under Distorted Supply Voltage,” presents the experimental study of phase-lock loop less single-phase shunt active power filter. It is useful for compensation of current harmonics and reactive power requirements. The control technique is presented, and its simulation study is discussed. The method for extracting the fundamental frequency from the distorted signal containing harmonics and other distortion effects are discussed. Also, the paper discusses a lab prototype setup for experimental verification. The performance is also compared with the IEEE-519 standard.
In the paper “High-Resolution SAR Typical Targets Extraction and Heterogeneous Image Registration,” the authors have presented method for heterogeneous image registration for two types of targets viz. airport and road targets with an aim to remove the issues related to SAR target extraction and image registration. The final method is called Triangle Mesh Angle Method. The constituent steps of the overall method are described. Results are obtained and compared to bring out the efficacy of the image registration method.
The following paper on “Investigation of RF and DC Performance of E-Mode In0.80 Ga0.20As/InAs/In0.80Ga0.20 as Channel based DG-HEMTs for Future Submillimeter Wave and THz Applications,” reports a study of the DC and RF behavior of Enhancement Mode (E-Mode) double-gate high electron mobility transistors (DGHEMT). InGaAs, InAs, InGaAs/InAs/InGaAs channel for HEMT devices is considered for sub-millimeter wave and THz frequency applications. The paper presents results and makes a case for use in sub-millimetre wave and THz frequency applications.
In “Modeling and Fabrication Aspects of Cu- and Carbon Nanotube-Based Through-Silicon Vias,” presents an overview of fabrication methods and modeling of through-silicon vias (TSV). In particular, the paper presents Cu and carbon nanotube based TSVs and discusses their potential use as suitable filler material for 3D TSVs. The paper discusses equivalent electrical models and their advantages and disadvantages to provide a perspective about their efficacies.
The following paper “MVO Algorithm Based LFC Design of a Six-Area Hybrid Diverse Power System Integrating IPFC and RFB,” presents an algorithm for estimating the parameters of PID controller for load frequency control in an alternating current transmission system. The algorithm is compared with sine-cosine algorithm for PI controller. Detailed simulation studies are presented and analyzed in the paper. The paper brings out the advantages of the proposed optimizer algorithm in terms of the dynamic response in the presence of sudden load disturbances.
The next paper “Radial Point Interpolation Method (RPIM) for the Meshless Analysis of Graphene Nano Ribbon,” presents a method for the analysis of graphene nano ribbon (GNR) for use in RF interconnects. The proposed method is investigated for efficiency for 1-dimensional and 2-dimensional problems. The paper reports the electrostatic analysis of GNR and compares the delay of the radial point interpolation method (RPIM) with other analysis method viz. reproducing kernel particle method (RKPM). The authors then draw conclusions regarding the proposed method.
The next paper “Speed-Sensorless DTC of a Matrix Converter Fed Induction Motor Using an Adaptive Flux Observer,” presents an algorithm for adaptive flux estimation for sensor less operation. This addresses the problem of voltage source inverter fed induction motor drive systems where the current quality gets compromised due to the implementation architecture. The source side power quality is estimated using matrix converter. The paper discusses the cost benefits also related to negligible energy storage requirements of the drive and sensor less operation.
The paper “Suppression of Short-channel Effects by Double-gate Double-channel Device Design in Normally-off AlGaN/GaN MIS-HEMTs,” presents a design of double gate double channel metal-insulator-semiconductor high electron mobility transistor (MIS-HEMT). A simulation study is reported to bring out the efficacy of the design and compare it with single gate single channel design structures. The paper shows that the double gate design improves in lowering the drain-induced barrier at sub-micrometer gate lengths.
The following paper on “Vibration Testing of Absolute Pressure Sensor for a Flush Air Data System (FADS)” presents the study and analyses of absolute pressure sensor for flush air data system under vibration tests of deterministic and random patterns. The accuracy of pressure sensors in FADS is important in establishing high accuracies of air data parameters. The purpose of this study is to establish adequate margin in design and integrity under high frequency excitations. Results are presented and discussed to establish the efficacy of the sub-system.
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Shiban K Koul
Shiban K Koul is currently an Emeritus Professor at the Indian Institute of Technology, Delhi. He served as Deputy Director (Strategy and Planning) at IIT Delhi from 2012–2016 and Mentor Deputy Director (Strategy & Planning, International Affairs) at IIT Jammu from 2018–2020. He also served as the Chairman of Astra Microwave Products Limited, Hyderabad from 2009–2019 and R P Shenoy Astra Microwave Chair Professor at IIT Delhi from 2014–2019. His research interests include: RF MEMS, high frequency wireless communication, microwave engineering, microwave passive and active circuits, device modeling, millimeter wave IC design, body area networks and reconfigurable microwave circuits including antennas. Successfully completed 38 major sponsored projects, 52 consultancy projects and 61 technology development projects. He has authored/co-authored 506 research papers, 13 state-of-the art books, 4 book chapters and 2 e-books. He holds 16 patents, 6 copyrights and one trademark. He has guided 25 PhD theses and more than 100 master’s thesis. He is a Life Fellow of IEEE and Fellow of INAE and IETE. He is the Chief Editor of IETE Journal of Research, Associate Editor of the International Journal of Microwave and Wireless Technologies, Cambridge University Press. He served as a Distinguished Microwave Lecturer of IEEE MTT-S for the period 2012–2014.
Recipient of numerous awards including IEEE MTT Society Distinguished Educator Award (2014); Teaching Excellence Award (2012) from IIT Delhi; Indian National Science Academy (INSA) Young Scientist Award (1986); Top Invention Award (1991) of the National Research Development Council for his contributions to the indigenous development of ferrite phase shifter technology; VASVIK Award (1994) for the development of Ka- band components and phase shifters; Ram Lal Wadhwa Gold Medal (1995) from the Institution of Electronics and Communication Engineers (IETE); Academic Excellence Award (1998) from Indian Government for his pioneering contributions to phase control modules for Rajendra Radar, Shri Om Prakash Bhasin Award (2009) in the field of Electronics and Information Technology, VASVIK Award (2012) for the contributions made to the area of Information, Communication Technology (ICT) and M N Saha Memorial Award (2013) from IETE.