Tel: 0452-3101049
Email: [email protected] 
The Principal's Quarters,
Tamilnadu Polytechnic College,
Madurai, TN, India, 625011
Tel: 0452-3101049, 0452-2678720
 
Navigation:
Highlights:

J Platform
ICA Analysis
Silicon Photonics
Digital Design
Opto electronics
Programming


Parallel Architectures

Parallel Architecture for Independent Component Analysis algorithm (ICA). Implementation of ICA solution solution based on J-Platform processors (reconfigurable-computing), which brings ultra high-speed objectives with high performance. This product is proposed to be used in many applications including image processors, military, sensor circuits and MEMS.
  • Matlab Implementation
  • Parallel architecture implementation using MA_Plus and UNL
  • Tested with real time signals and images
  • Enhanced Architectures

Download ...
ICA on J- Platform [ pdf, 370 KB ]
ICA Applications [pdf, 271 KB]
 

Optical Components in Silicon Circuits

Literature survey in the field of Opto Electronic Integrated Circuits (OEIC).
  • III-V Materials Integration with Silicon
  • VCSELs, Waveguides, Photodetectors
  • Path loss, Lens design, Transfer functions
  • Optical switches
  • High speed transceiver circuits
  • Lasing in silicon
  • CMOS image Sensors 
  • Surface Plasmon Resonance Sensors

OEICs have many applications including on-chip optical interconnects, high speed processors and sensors.

Download ...
CMOS Imager                        [pdf, 437 KB]
Lasing in Silicon             Part1  [pdf, 559 KB]  Part2 [pdf, 467 KB]
Porous Si Laser                       [pdf, 393 KB]
Nano Si                                 [pdf, 593 KB]
Surface Plasmon Resonance     [pdf, 524 KB]
III-V Materials Integration with Si [pdf, 196 KB]
OEIC Part 1 - VCSELs, Modeling [pdf, 581 KB]
OEIC Part 2 - VCSELs Contd ... [pdf, 924 KB]
OEIC Part 3 - VCSELs Contd ... [pdf, 934 KB]
OEIC Part 4 - Photodetectors   [pdf, 384 KB]
OEIC Part 5 - Waveguides        [pdf, 513 KB]
LENS design                           [pdf, 428 KB]

Opto-electronic Materials 

Reliability Analysis of opto electronic Materials. (M.S Thesis) Reliability characterization of p-n hetero junctions (CdTe-CdS) under light stress.
  • Testing chamber construction
  • Measurement Automation-Keithley 2400, LabView, PCI, Relay design
  • C-V (HP 4194A), wavelength dependent IV, spectral measurements
  • Effect of Copper migration
  • Effect of Heat treatment (CdCl2)
  • Thin film Fabrication - MOCVD, CBD, CSS, Evaporation
  • NREL Meeting, Colorado, 2003

M.S Thesis (pdf, 1.26 MB)
Effect of Cu + Automation (pdf, 676 KB)
Effect of Thermal treatment (pdf, 832 KB)
More Results (pdf, 386 KB)

Digital Design

Design Layout and Simulation of 4-bit Array Multiplier, 4-bit Ripple counter and 4 bit Synchronous Counter using Cadence Virtuoso and H-Spice simulator;

VHDL Model of a 16-bit Conditional Sum Adder using 4-bit Look ahead carry for reduced delay. [pdf, 469 KB]


Circuits

Collision avoidance Control in Robotics (Under Grad Project). Implementation collision detection and avoidance circuits using CMOS ICs.
  • Schmitt trigger, photo detectors, sampling circuit, low power 
  • Steering control - Resistance Comparator, power supply, astable multi vibrator, Timer, LDR, relay circuit, differential Amplifier

Programming

Simulation package for testing Collision detection and avoidance avoidance algorithm using C. ( Under Grad Project )

Project Management Package using VB.net and SQL Server. Implementation of time tracking, Reports generation, Clients information and confidential project details. ( Silo Technologies Inc)

Hands on Experience in Configuration and Customization of Tally using TDL. Very limited programmers in this domain. ( Realsoft Inc )

17 Dynamic DNN web Portals using VB.net, SQL Server/Access, photoshop
Click this link to see snap shots of the web portals . (as of 6/25/2004)

Silo Technologies Inc
Infinite Echelon Inc 
The Cooling Towers Inc
Aerial Photography Inc
USA Tropical Flowers 
In the News Inc
Cross Pumping Inc
API Computer Training
MJL Consult 
Freaky Freak
Rodriguez Collection
North America temples

Web Master for Student of India Association, University of South Florida, Tampa, USA (2001 - 2002). Initiated web representation of SIA.

Javascript consultant (Volunteered) for Modelithics Inc

Miscellaneous

MEMS - White Paper 
Homeland Security - Solutions
DNN-ite - Dynamic web content Management
AltaPoint Training Materials
IsFET (pdf, 296 KB)
Interests:

Opto VLSI Design
Circuit Characterization
Parallel Architecture
Sensors and circuits

My Album ... 
 
© Ashok Rangaswamy, 2004
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