|
University of Toronto |

| Name | Position | Supervisor(s) | Advance |
| Adel S Sedra | Professor | N/A | Detailed information |
| Glenn Gulak | Professor | N/A | Detailed information |
| Jonathan Rose | Professor | N/A | Detailed information |
| David Johns | Professor | N/A | Detailed information |
| david lewis | Professor | N/A | Detailed information |
| John Long | Professor | N/A | Detailed information |
| Ken Martin | Professor | N/A | Detailed information |
| Wai Tung Ng | Professor | N/A | Detailed information |
| Paul Chow | Professor | N/A | Detailed information |
| Stefan Zukotynski | Professor | N/A | Detailed information |
| Stephen Alie | M.A.Sc. Student | Kenneth Martin | Detailed information |
| Amir Hadji-Abdolhamid | M.A.Sc. Student | David Johns | Detailed information |
| Bryn R. Owen | Research Associate | Kenneth Martin | Detailed information |
| Jasmine Cheng | M.A.Sc. Student | David Johns | Detailed information |
| Dean D'Mello | M.A.Sc. | Paul Chow & Glenn Gulak | Detailed information |
| Greg Hartman | M.A.Sc. Student | Kenneth Martin | Detailed information |
| Kapil Kamra | M.A.Sc. | David Johns | Detailed information |
| Karen Kozma | Ph.D. | David Johns & Adel Sedra | Detailed information |
| Kasra Ardalan | M.A.Sc. Student | David Johns | Detailed information |
| Khoman Phang | Ph.D. Student | David Johns | Detailed information |
| Sebastian Magierowski | Ph.D. Student | John Long | Detailed information |
| Marcial K. Chua | M.A.Sc. Student | Kenneth Martin | Detailed information |
| Chris Ouslis | Research Associate | Adel Sedra | Detailed information |
| Ralph A I Duncan | Ph.D. | Kenneth Martin & Adel Sedra | Detailed information |
| Bob Richens | Lab Technician | Kenneth Martin & David Johns & Adel Sedra | Detailed information |
| Sepideh Rezania | M.A.Sc. | Kenneth Martin | Detailed information |
| Mohammad Hossein Shakiba | Ph.D. Student | David Johns & Kenneth Martin | Detailed information |
| Steve Jantzi | Ph.D. Student | Kenneth Martin & Adel Sedra | Detailed information |
| Dickson 3.1 | M.A.Sc. Student | John Long | Detailed information |
| Wynstan Tong | M.A.Sc. Student | Kenneth Martin | Detailed information |
| Rod Zavari | M.A.Sc. Student | David Johns | Detailed information |

Abstract - Electronic circuit design for analog/digital signal processing. In particular, developing design methods, computer design aids, analysis methods and novel applications for fully-integrated filter networks, and the design and fabrication of high-speed analog circuits. Projects under investigation: current-mode filtering for high-frequency applications; complex-signal filtering for bandpass sigma-delta conversion; computer-aided filter design and synthesis techniques; application of adaptive filtering techniques to on-chip tuning of continuous-time analog filters; Q-enhanced circuit designs employing on-chip inductors for wireless communications; state-space filter synthesis methods. Recent contributions include automatic tuning techniques for continuous-time filters incorporating effects of parasitic elements, a current-mode based circuit technique which enhances the selectivity of integrated inductors and is suitable for operation in the 1 GHz range, the design of a 100 MHz DAC and a high-speed state-space based adaptive analog filter, filter CAD software, filtorX, employed in the design of a complex bandpass sigma-delta convertor.
Abstract -
VLSI design and applications; VLSI in signal processing and digital
communications; parallel algorithms; computer architecture.
Projects under investigation include architectures for ML/MAP sequence estimation, logic-enhanced
memories for telecommunications and signal processing, ferroelectric memories, field
programmable analog arrays.
Recent contributions include a field-programmable analog array, fabricated in 1.2-micron CMOS,
containing four op-amps, passive components and a transconductor based interconnection network
has been used to prototype numerous circuits including a filter biquad, a VCO, a precision rectifier, a
signal multiplier and a quadrature oscillator, design and fabrication of CAM-based memory
circuits for ATM switch applications.
Abstract -
Architecture of Field-Programmable Gate Arrays, computer-aided design tools
for Field-Programmable Gate Arrays, computer-aided design for VLSI, Field-Programmable
Systems.
Projects under investigation include high speed field programmable gate arrays (FPGAs), CAD software
for FPGAs-logic synthesis and placement, architecture of Field-Reconfigurable Memory,
field-programmable systems for fast-prototyping, characterization of circuits and generation of
random circuits.
Recent contributions include a field-programmable system implementation, a
Field-Reconfigurable Memory Implementation, partitioning for multiple FPGAs, architecture
of multi-FPGA families.
Abstract -
Integrated-circuit design for signal processing applications.
Projects under investigation include reconfigurable 1-bit filtering on delta-sigma modulated signals,
tuning of integrated continuous-time filters, implementation of high-speed analog adaptive filters,
analog Viterbi detection for general coding schemes, time-interleaved oversampling A/D converter.
Recent contributions include a method for time-interleaving oversampled data converters, a
high-speed adaptive pulse shaping filter, a high-speed analog Viterbi detector for
partial-response class-IV coded signals.
Abstract -
FPGA architecture, Field Programmable Systems, Compute Accelerators,
Computer Arithmetic, Digital Filters.
Projects under investigation include evaluation of circuit area/speed tradeoff in routing architectures for
hierarchical FPGAs, exploration of timing-based placement for improvements in circuit area in
hierarchical FPGAs, design of an FPGA architecture targeted at emulation systems, to achieve
much better density and utilization using denser coding and a RAM-based implementation, design of
a high-speed digital filter operating on oversampled signals, using a highly pipelined architecture to
achieve 500MHz in 1.2-micron CMOS.
Recent contributions include design and implementation of a logarithmic arithmetic chip for signal
processing, achieving 114 MFLOPs in only 16.6 mm**2, offering a factor of 2.6 better performance
per unit area than the next best contemporary floating-point unit, design of hardware accelerators
for circuit simulation, high speed logic simulation.
Abstract -
Analog integrated circuits in CMOS, BiCMOS, and GaAs technologies, fixed
and adaptive digital filters for audio applications.
Projects under investigation include analog components of wireless communication systems, the design of
an analog Viterbi decoder, quadrature high-frequency bipolar oscillator, frequency-domain
adaptive digital equalizers for audio applications.
Recent contributions include analog high-speed q-enhanced biquads utilising integrated inductors
at 1 GHz submitted to BNR for fabrication, complex band-pass oversampling A/D converters for
wireless communication systems, a 6 GHz HBT phase-locked loop, a continuous-time
BiCMOS low-distortion, high-speed prefilter intended for HDTV, resonator-in-a-loop digital
filters (both adaptive and fixed).
Abstract -
CMOS/BiCMOS circuits, processing technologies and device design for
telecommunications applications, power and RF semiconductor devices for high frequency and
power electronics applications.
Projects under investigation include advanced BiCMOS device design (RF power transistors and
non-volatile memories) for telecommunications, to enhance current CMOS/BiCMOS processes,
investigation of merged MOS/bipolar power semiconductor devices that are compatible with modern
VLSI processing technology, for smart power IC applications requiring low on-resistance, fast
switching speed, high breakdown voltage, and immunity to latch-up.
Some recent contributions include development of high voltage and high power semiconductor devices
with significant impact on automotive and telecommunication applications.
Abstract -
High-performance microprocessor architectures and memory systems, VLSI
architectures, DSP processors, field programmable gate arrays (FPGAs) and systems.
Projects under investigation include field-programmable digital/analog array implementation, ATM switch
ASIC implementation, DSP processor architecture design, high-performance memory design,
architectures for field-programmable systems.
Some recent contributions include high-speed FPGA implementations, three-processor cascade
Viterbi decoder.
Abstract -
My reaserch is on the subject of high speed data-recovery. At the core of
the research is a novel phase/frequency detector which is used in a
phase-locked loop to perform the critical timing syncrhonization required for
data-recovery.
Abstract -
An analog VLSI layout language called BALLISTIC has been
created and is being used to design analog module generators for
a variety of useful circuits. These circuits include op amps,
comparators, switched-capacitor filters, and digital support
circuits. The library will be expanded to include more intricate
building-blocks customized for wireless sub-systems. The layout
language was made public before its presentation at CICC `95
and is now available to non-profit organizations through both ftp
and the world-wide web. To date, it has been used as the layout tool
in 10 distinct research projects leading to fabrication.
Abstract -
Continuous Time Adaptive Analog Cable Equalizer
When transmitting data over copper at rates in the hundreds of Mb/s the attenuation on even a few hundred meters of cable can become significant due to the skin effect and dielectric losses. This attenuation is frequency dependent, making a simple gain stage unsuitable for equalization. Accurate re-generation of the data at these frequencies can be done using a relatively small chip area with low power using an analog filter. To allow proper equalization for an arbitrary cable length an adaptive filter will be designed, fabricated and tested.
Abstract -
Most adaptive filters used in industry today are digital. The rate of data
transmission on a twisted pair copper wire is limited by the
inability to equalize the channel at very high frequencies. The objective of
this thesis is to investigate the use of analog adaptive filtering in
equalizing a high speed twisted pair data communications channel. Speeds
of 50 MHz and higher are being targeted. Analog adaptive filtering should be
more beneficial than digital adaptive filtering since analog technology often
uses less silicon area, consumes less power and attains higher speeds.
Abstract -
This research addresses various aspects of tuning high-frequency
continuous-time filters. It is well known, that the transfer
function of continuous-time filters must be tuned over time as
the transfer function varies due to fabrication tolerances and
environmental changes. The tuning of continuous-time filters in the
presence of parasitic poles is being investigated. As well, new
approaches for tuning bandpass filters with high quality factors
are being explored. Circuits and systems realizing the adaptive
tuning of continuous-time filters are also being developed.
Abstract -
I am currently in the midst of defining a research topic. Areas of interest
include analog signal processing and adaptive equalization as applied to
high-speed wired and wireless communications applications. One possible
project would be to investigate the use of analog Viterbi decoders
for turbo codes. This research could be applied to the areas of magnetic
storage and communications over twisted-pair cable or infrared wireless
optical links. The potential benefits would be reduced power consumption
and the ability to process higher speed signals over conventional
digital processing systems.
Abstract -
Design, programming, support, and maintenance of the filter-design
software filtorX. See associated web pages for more details
and ordering information.
Abstract -
A tunable 1 GHz active-LCR oscillator with on-chip inductors was designed
and fabricated for use in front-end demodulation schemes. Additionally,
an active-LCR filter based on positive-feedback for on-chip inductor
Q-enhancment was designed and fabricated. Both circuits were fabricated
in the BATMOS process and later tested.
Abstract -
Lab technician for the analogue electronics group, including lab and
equipment maintenance, board design and inventory management.
Abstract -
Development of the spreadsheet interface system, PowerDesign,
enabled a variety of amplifier circuits to be investigated. The focus
was on common-mode feedback circuits, including switched-capacitor and
continuous-time implementations. An op amp with the switched-capacitor
CMFB circuit was fabricated in the BATMOS process and later tested.
Other configurations of the op amp, including single-ended and
enhanced-gain, were designed and incorporated into PowerDesign
as well.
Abstract -
Analog Viterbi decoders offer the advantages of reduced power and size
over digital implementations, primarily due to the elimination of the
A/D converter. A new derivation of the Viterbi algorithm for decoding a
class-IV partial-response signal is proposed. This algorithm leads to a
very simple and fast structure with a complexity much less than that of
the A/D converter by itself. A 200 MHz 3.3V class-IV decoder was designed
and fabricated in the 0.8um BATMOS process, and experimental results
confirm that a speed of 200 MSymbols/s can be achieved with only 30mW
power consumption.
Abstract -
A 4th-order complex bandpass sigma-delta analog-to-digital converter has
been designed and submitted for fabrication in the 0.8um BATMOS process
as well as a 0.5um CMOS process. This A/D conversion scheme works directly
on the pair of quadrature outputs from the front-end mixer, performing
bandpass A/D conversion rather than low-pass conversion, thus reducing
image problems and eliminating concerns about self-EMI and 1/f noise.
The circuit is designed to clock at 13 MHz (for cellular receivers) and to
convert incoming quadrature signals with 4.875 MHz centre frequency and up
to 200 kHz (GSM) bandwidth. The converter should realize more than 70dB SNR.
Smaller bandwidths can also be converted, such as 100 kHz (CT2+) and 30
kHz (IS-54, AMPS), with SNR increasing for narrower bandwidths.
Abstract -
The design of high-speed analog wireless circuits will be undertaken.
Circuits will include frequency synthesizers, phase-locked loops, and
operational transconductance amplifiers. Current work is focused on a
GHz-range frequency synthesizer that will be incorporated into a digital
radio system. The proposed architecture is the fractional-N type.
Applications for these circuits include cellular communications,
high-speed digital networks and signal-synchronization circuits.
Professor
Direct e-mail to gulak@eecg.toronto.edu
See home page at ~gulak
Professor
Direct e-mail to jayar@eecg.toronto.edu
See home page at ~jayar
Professor
Direct e-mail to johns@eecg.toronto.edu
See home page at ~johns
Professor
Direct e-mail to lewis@eecg.toronto.edu
Professor
Direct e-mail to long@eecg.toronto.edu
Professor
Direct e-mail to martin@eecg.toronto.edu
See home page at ~martin
Professor
Direct e-mail to ngwt@eecg.toronto.edu
Professor
Direct e-mail to pc@eecg.toronto.edu
Professor
Direct e-mail to zuk@eecg.toronto.edu
M.A.Sc. Student, Kenneth Martin Supervising
Direct e-mail to alie@eecg.toronto.edu
See home page at ~alie
M.A.Sc. Student (Jan. 1997 to Fall 1998), David Johns Supervising
Direct e-mail to amir@eecg.toronto.edu
Research Associate, Kenneth Martin Supervising
Direct e-mail to bryn@eecg.toronto.edu
See home page at ~bryn
M.A.Sc. Student (Sep. 1996 to Apr. 1998), David Johns Supervising
Direct e-mail to chengj@eecg.toronto.edu
M.A.Sc. (Completed Fall 1996), Paul Chow & Glenn Gulak Supervising
Direct e-mail to dmello@eecg.toronto.edu
See home page at ~dmello
M.A.Sc. Student (Sep. 1995 to Spring 1997), Kenneth Martin Supervising
Direct e-mail to ghartman@eecg.toronto.edu
See home page at ~ghartman
M.A.Sc. (Completed Summer 1996), David Johns Supervising
Direct e-mail to kapil@eecg.toronto.edu
See home page at ~kapil
Ph.D. (Completed Fall 1996), David Johns & Adel Sedra Supervising
Direct e-mail to karen@eecg.toronto.edu
See home page at ~karen
M.A.Sc. Student (Sep. 1996 to Fall 1997), David Johns Supervising
Direct e-mail to kasra@eecg.toronto.edu
See home page at ~kasra
Ph.D. Student (Fall 1995 to Summer 1999), David Johns Supervising
Direct e-mail to kphang@eecg.toronto.edu
See home page at ~kphang
Ph.D. Student (Spring 1997 to Summer 2001), John Long Supervising
Direct e-mail to magiero@eecg.toronto.edu
See home page at ~magiero
M.A.Sc. Student (Fall 1995 to Spring 1997), Kenneth Martin Supervising
Direct e-mail to mchua@eecg.toronto.edu
See home page at ~mchua
Research Associate, Adel Sedra Supervising
Direct e-mail to ouslis@eecg.toronto.edu
See home page at ~filtorx
Ph.D. (Completed June 1995), Kenneth Martin & Adel Sedra Supervising
Direct e-mail to ralph@eecg.toronto.edu
Lab Technician, Kenneth Martin & David Johns & Adel Sedra Supervising
Direct e-mail to richens@eecg.toronto.edu
See home page at ~richens
M.A.Sc. (Completed Nov. 1995), Kenneth Martin Supervising
Direct e-mail to sepideh@eecg.toronto.edu
See home page at ~sepideh
Ph.D. Student (Sep. 1991 to Summer 1997), David Johns & Kenneth Martin Supervising
Direct e-mail to shakiba@eecg.toronto.edu
See home page at ~shakiba
Ph.D. Student (Sep. 1992 to Summer 1997), Kenneth Martin & Adel Sedra Supervising
Direct e-mail to steve@eecg.toronto.edu
See home page at ~steve
M.A.Sc. Student (Sep. 1996 to Fall 1998), John Long Supervising
Direct e-mail to tscheung@eecg.toronto.edu
M.A.Sc. Student (Jan. 1996 to Oct. 1996), Kenneth Martin Supervising
Direct e-mail to wynstan@eecg.toronto.edu
See home page at ~wynstan
M.A.Sc. Student (Sep. 1996 to Apr. 1998), David Johns Supervising
Direct e-mail to zavari@eecg.toronto.edu
See home page at ~zavari

