Research activities in the Department of Electrical Engineering are in three ways, academic, sponsored and Research Based Industrial Consultancy (RBIC). The latter two are mainly utilized to upgrade laboratory research equipment and facilities. Research projects worth nearly 18 Crore Rupees have been undertaken by our faculty in the last 6-7 years. There are four major groups in the department: (a) Communications, (b) Microelectronics and VLSI, (c) Power Electronics, Control, Robotics and Instrumentation and (d) Power systems and high voltage engineering.

(A) Communications.

The focus of the group is to address the pressing needs of India and other developing countries in the area of telecom/networking by market-driven product development, strengthening of Indian telecom/networking Industry, technical training and education and driving the Indian telecom/IT policy. Vision of the group is make India a telecom design house of international standard.

Our main motto is "World-class Technology at an Affordable Price.

(i) Research areas:

  • Wireless Communications: MIMO-OFDM transceiver algorithms, W-CDMA & HSDPA technology, Resource Allocation, Network Information Theory, Interference Management, Relaying & Co-operative Communications, Adaptive Estimation and Security
  • Photonics and Optical Networks: Interferometry, Diffractive Optical Elements, Optical MEMs, Optical Devices and Instruments, Silicon Photonics and Integrated Optics, Quantum Communications, Wireless Optical Communications, Optical Link Design and Planning, Non-linear and Computational Optics, Optical Metro and Access Networks and VLSI for Optical Communications
  • Signal Processing: Image processing and analysis, 3D from 2D, image super-resolution, pattern matching, biometrics, tracking and surveillance, speech coding, recognition and synthesis
  • Computer networks: Modeling and performance analysis, QoS, multimedia applications and mobile computing

(ii) Development of world-class telecom products:

  • CORDECT Wireless Local Loop System
  • ADSL & HDSL, Fiber Local Loop System
  • Satellite Modem, Multiport WiFi Switch
  • Micro-GSM & WiMaX base-stations
  • NMS, Soft-switching, IVR, IP-Telephony
  • Lab Kits for Wireless, Optics, & LAN

(iii) Socially relevant products:

  • Low-cost Rural ATM
  • Low-cost Thin client
  • Software Apps in Indian Languages
  • Remote Medical Diagnostic Kit
  • Weather & Soil Quality Monitoring
  • Rural Tech. Business Incubation

(iv) Miscellaneous Activities:

  • Contributions to broadband wireless standards including IEEE 802.16e, IEEE 802.16m and LTE-A
  • Incubation of more than dozen companies in the telecom & IT services sector
  • Center of Excellence in Wireless Technology, DSP learning center and three Chair Professorships in Telecom & Wireless.

(v) Laboratories

  • ADI DSP Lab
  • Communication Systems Lab
  • DSP Lab
  • Experimental Optics Lab
  • Optical Networks Lab
  • Fiber-in-local loop (FILL) Lab
  • FPGA
  • HP Lab
  • Image Processing Lab
  • Indic Computing Lab
  • Intel Lab
  • Intel Wireless Lab
  • Media Lab Asia Labs I and II
  • Microwave Labs I and II
  • Mobile Computing Lab
  • NMS Lab
  • Optical Communication Labs I and II
  • RF Labs I and II
  • Signal Compression lab
  • Signal Processing Lab
  • Telematics Lab
  • TeNet Design Lab
  • TeNet Operations Lab

(B) Microelectronics and VLSI

The Microelectronics group works on modeling and fabrication of various Semiconductor Devices. Significant contributions by this group include:

  • Analytical modeling and new concepts in solar cells, GaN HEMTs, MOSFETs and power devices like super junctions and SOI MOSFETs
  • Processes for electroless metallization, growth of thin oxides & high-k dielectrics, industrial manufacture of VHF bipolar transistors & diodes, silicon p-i-n variable optical attenuator
  • Fabrication of III devices like InGaAs/InP photodetectors
  • MEMS: Fabrication of integrated polysilicon piezoresistive pressure sensor and accelerometer. Test structures for measurement of residual stress, Young modulus and stiction
  • Bio-sensors for Triglyceride & Urea

The thrust of the VLSI group is to develop tools and techniques for high speed energy efficient signal processing. One of the delta-sigma analog to digital converters we have designed, has the lowest reported energy consumption per level resolved. Significant contributions include:

  • Power and area efficient high speed analog adaptive equalizers
  • Accurate design and measurement techniques for high frequency analog filters
  • Efficient computational techniques for noise and jitter in analog and mixed signal systems
  • Hardware accelerator for discrete event simulation
  • Data acquisition board designed for Optical Time Domain Reflectometer (OTDR)
  • Architecturally efficient FFT pruning algorithms

Labs under this group are

  • Device Modeling Lab
  • Digital Systems Design lab
  • FPGA Lab
  • Microelectronics Labs I through IV
  • Microelectronics & MEMS lab
  • Nano-Fabrication Facility
  • TI-VLSI Design Lab
  • VLSI CAD lab
  • VLSI Labs I and II
  • VLSI Testing Lab
  • Microprocessor lab

(C) Power Electronics, Control, Robotics and Instrumentation

This group is involved with application of Power Electronics Technology to control machine drives, converter and inverter control. The following works are carried out by research students in this group:

  • Hybrid active power filters
  • Grid connected inverter control
  • Sensorless BLDC motor control
  • Position control of PMSM machines
  • Condition monitoring of induction machines
  • Harmonic detection for use with Active power filters
  • Digital Control of Scalable AC/DC and DC/DC Converters
  • New architectures for robotic mapping and exploration

Following list gives a glimpse of the group interaction with Industry:

  • Electronic Diesel Engine Control
  • Microcontroller based Speed Measurement System
  • Design of BLDC motor controller for position control
  • Modeling and Implementation of DSP based Control of a pointing system
  • Optimal Design of Power Circuitry for Automobile Headlamp
  • Development of Sensor Head for Remote Sensing of Conductive Mineral Deposits

Labs belonging to this group are

  • Calibration Lab
  • Control Engineering Labs I through IV
  • IE Lab
  • Machines Lab
  • Measurements Lab
  • Measurement Testing Room
  • Measurement UG Lab
  • Power Electronics Labs I and II
  • Power Electronics Simulation Lab
  • Robotics Lab

(D) Power Systems & High voltage

  • Condition monitoring of power apparatus adopting multi sensor fusion system
  • Generation and characterization of nano particles by wire explosion process
  • Development of Nano-composites for outdoor insulation structures
  • Sterilization of liquid foods using pulse power technique
  • Power Quality monitoring, analysis and interpretation unit
  • Harmonic mitigation devices in power distribution network
  • Load balancing and power factor improvement
  • Voltage regulation in power distribution network
  • Dedicated experimental set-ups for custom power devices
  • Power system modeling, simulation, optimization, deregulation and restructuring.
  • Power system automation, numerical and digital protection
  • Energy management systems and SCADA

Labs come under the purview of this group are

  • High Voltage Lab
  • High Voltage Research Labs I and II
  • High Voltage UG/PG Lab
  • Power Systems Computation Lab
  • Power System Hardware Lab
  • Power System Relay Lab
  • Power System Research Lab
  • Power Systems UG Lab

Research Findings

Following are the selected findings of our faculty in recent years.

Widely Programmable (70-500 MHz) Transconductance-Capacitance Filter

Distortion Compensated Flash Analog to Digital Converter

Resilient Packet Ring (IEEE 802.17 RPR) MAC Implementation in Xilinx Virtex5 Evaluation Boards




Lab Facilities and experimental setups

Quantum Key Distribution Test bench

PECVD System LPCVD System