About Me

Rakesh_Mahto

Rakesh Mahto

Dissertation Topic

Reconfigurable and reprogrammable Photovoltaic (PV) module for fault tolerant power source to power micro-autonomous drones or satellite.

Education

Doctorate of Philosophy in Computer Engineering (Doctoral Candidate)
University of New Mexico, Albuquerque, NM
Major: Computer Architecture and VLSI Design. 		Summer 2016 (Expected)
Master of Science in Electrical Engineering
California State University, Fullerton, CA
Major: Computer Engineering. 		Spring 2009

Relevant Coursework

Advanced VLSI Design, Analog Electronics, VLSI Design, VLSI Testing, Hardware Design with VHDL, RF Design, Hardware-Oriented Security and Trust, Advance Computer Architecture, Active and Passive Filter, Optimization Techniques in Systems Engineering.

Academic Experience

Instructor
Department of Electrical and Computer Engineering
University of New Mexico, Albuquerque, NM 		May 2011 - Present
  • Advance Logic Design (Summer 2016), Probaility Methods in Engineering (Summer 2016), Electronics I (Summer 2015)- class rating of 5/5, Microprocessor (Spring 2015)- class rating of 4/5, and Computer Logic Design (Summer 2011)- class rating of 4/5.
Teaching Assistant
Department of Electrical and Computer Engineering
University of New Mexico, Albuquerque, NM 		August 2009 - Present
  • Analysis and Design of Mechanical Control Stystems (Spring 2016), Intermediate Programming and Engineering Problem Solving ( Fall 2011, Spring 2011, Fall 2012),Computer Logic Design ( Fall 2011, Spring 2011, Summer 2011, Fall 2012, Spring 2013, Fall 2013), Advance VLSI Devices (Fall 2010), Circuit Analysis (Summer 2012).
Graduate Research Assistant /Webmaster
Center for Insurance Studies
California State University, Fullerton, CA 		August 2007 - May 2009
Graduate Assistant
University of Tennessee, Martin 		Janunary 2007 - May 2007

Work Experience

Test Engineer
Shroffs Engineering Ltd, Vadodara, Gujarat, India
 November 2005 - July 2006
  • Administered the Testing Department and managed day-to-day affair of the department in accordance with ISO 9000 requirement.
  • Designed the test-bed for 1-Phase and 3-phase submersible Induction motors.
  • Actively involved in the designing of 1-phase Induction motors.
  • Assessed and provided yield improvement plan to meet product development milestones.
  • Participated in field-testing, installation and periodic inspection of our products at our customer’s location.
  • Analyzed electrical test data obtained from submersible Induction motors and pumps.
  • Participated in the selection,training, and motivating of junior staff working in the testing department.
Service Engineer
Star Instrument Engineers, Ankleshwar, Gujarat, India
February 2005 - October 2005
  • Responsible for service and maintenance of process instruments at our client companies such as ONGC Ltd., Essar, and Reliance Petrochemicals.

Publication and Presentation

  • J. Richards, R. Mahto, P. Zarkesh-Ha, O. Lavrova, "Fault Tolerant Reconfigurable Solar Cells with embedded CMOS For Non-Serviceable Space Applications," IEEE AUTOTESTCON 2016, Anaheim, California, United States, 2016 (accepted)
  • R. Mahto, P. Zarkesh-Ha, O. Lavrova, “N-Channel MOSFET Based CMOS-On-PV Modelling For an Accurate Fault Detectionand Mitigation,” in Reliability of Photovoltaic Cells, Modules, Components, andSystems IX, San Diego, California, United States, 2016. (accepted)
  • R. Mahto, P. Zarkesh-Ha, O. Lavrova,“Reconfigurable Photovoltaic Integrated with CMOS for a Fault Tolerant System,”in Photovoltaic Specialist Conference (PVSC), 2016 IEEE 43rd, 2016. (accepted)
  • R. Mahto, P. Zarkesh-Ha, O. Lavrova,“MOSFET-Based Modeling and Simulation of Photovoltaics Module,” in Photovoltaic Specialist Conference (PVSC), 2016 IEEE 43rd, 2016. (accepted)
  • R. Mahto, P. Zarkesh-Ha, O. Lavrova,“Reconfigurable Power Management for CMOS-onPV Cell,” in Reliability Physics Symposium, 2016 IEEE International, 2016, pp. 3C.4.1–3C. 4.6. (accepted)
  • R. Mahto, O. Lavrova, P. Zarkesh-Ha, and L. Lester, “Reconfigurable and Programmable Photovoltaic Power for Micro AutonomousSystems,” in ReSpace/MAPLD 2010, Albuquerque, NM, 2010.

Research Project

Reconfigurable and Programmable Photovoltaic Cells

  • Proposed and implemented SerDes (Serializer/Deserializer)design operating at 20 MHz using ON Semi 0.5um technology for reconfigurable solar cells.
  • Designed the test bed to test the system, wire bonding and generated test vectors by employing Vertex 2P Pro FPGA board.
  • Proposed fault and partial/complete shading detection and mitigation algorithm.
  • Characterized PV cell for different configuration under various loading condition.
  • Presented a novel NMOS based PV module mathematical modeling technique.
  • Built a spice model of NMOS based PV module using T-spice/H-spice.
  • Implemented fault tolerant detection algorithm on an FPGA and Arduino board.

Avalanche Photodiode (APD) Tranimpedance Amplifier

  • Designed various stages of Transimpedance Amplifier.
  • Proposed testbed for the Transimpedance Amplifier.
  • Designed 2-stage single-ended differential amplifier operating at bandwidth of 5.5 GHz.
  • Optimized the matching network of common source amplifier by using CGH40009P JFET to achieve a bandwidth of 5.0 GHz with a gain of 12 dB.
  • Improved the architecture and reduced the operating cost to half by implementing the same design with one APD.

128 X 128 CMOS Read Out Integrated Circuit

  • Designed layout and netlist of the Column and Row select in the ON Semi 0.35um process by using Tanner Tools (T-Spice, L-edit, LVS).
  • Characterized and designed the unit cell.
  • Generated the signals in Vertex-2P Pro board to test the chip.

ASIC Design Flow for IBM 180nm technology process

  • Designed the standard cells library(no of cells 80) for IBM 180 nm process which include DRC, Schematic, LVS, PEX, Symbol generation and Abstract generation.
  • Generated the .lib and analyzed all the cells in standard cell library by using the Encounter Library Characterizer (ELC) for later timing and power analysis .
  • Predicted the timing, power analysis, area of the FPU and AES Engine by using the RC tool in the Cadence Design Suite.
  • Performed the Power Grid routing, DFT placement, clock tree insertion, placement and routing of the standard cells with filler cells by using the Encounter tool in Cadence Design Suite.

CMOS Two- Stage Operation Amplifier in TSMC 0.35um HV technology

  • Implementation and optimization the Opamp to achieve a gain (≥ 60dB) with a bandwidth of 65 MHz.
  • Achieved a operating range of +6.5 V to -6.5 V.

RF LNA Amplifier and Tunable RF Oscillator

  • Designed a LNA operating at 2 GHz with a gain of 20 dB in Agilent ADS.
  • Optimized the matching network to achieve VSWRin < 2.8 dB,VSWRout < 2.8 dB and Noise Figure < 2 dB.
  • Designed a tunable oscillator by using a varactor diode operating at 2GHz in Agilent ADS environment.

Duckhunt Game on FPGA Board

  • Implemented the Duck Hunt game on Vertex-2P Pro board. An external monitor is connected using the VGA interface with a resolution of 800 X 600 with operating frequency of 50 Hz. An external mouse interface is designed to shoot virtual flying ducks.

Computer Skills

EDA Tools

  • Tanner Tools ( L-edit, T-Spice, S-Edit, W-edit, LVS).
  • Cadence Tools Suite (Virtuoso, ADE- Analog Design Environment, Spectre, SpectreRF, Abstract Generator, Encounter Library Characterizer, RTL Compiler, Encounter, ORCAD, Allegro, Pspice A/D).
  • Mentor graphics tools (ModelSim, Calibre LVS, DRC, PEX).
  • Synopsys Tools(Hspice, Design analyzer/compiler).
  • Eagle Cad, PCB123 Cad.

RF Design Tools

  • Agilent ADS, Microwave Office, SpectreRF, Sonnet Lite.

Hardware Description

  • VHDL, Verilog, Verilog AMS, SystemC

Packages

  • Matlab, Xilinx ISE and Vivado, NI Labview, NI Multisim, Altera Quartus II

Programming/Scripting language

  • C, C++, C#, Perl, TCL, Java, HTML, DHTML.

Awards

  • Doctoral conference presentation award.
  • Graduate Assistantship; University of New Mexico, Albuquerque and University of Tennessee, Martin.
  • $1000- Auto Club Southern California Outstanding student award.
  • $1000- Burnham Benefits Insurance Scholarship.
  • ONGC Ltd Merit Scholarship; ONGC Limited ( 1st standard till 12th standard).

Membership

  • SPIE student member
  • IEEE student member
  • Instrumentation, Systems and Automation Society (ISA)
  • Gamma Iota Sigma; Insurance and Risk Management Club