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High Frequency Applications of Wide band Adjoint Sensitivity Analysis

August 6, 2015
4:00 pmto5:30 pm

The Electrical and Computer Engineering Department of Dalhousie University, along with the Signal Processing / Microwave Theory and Techniques Joint Chapter and Circuits and Systems / Solid State Circuits Society Joint Chapter of the IEEE Canadian Atlantic Section wish to invite you to the following presentation.

Title of Talk: High Frequency Applications of Wide band Adjoint Sensitivity Analysis
Speaker: Prof.  Mohamed Bakr, McMaster University
Time: 16:00pm – 17:30pm, Thursday, August 6th, 2015
Place: Dalhousie University, Sexton Campus, Room B308 • Halifax • NS • Canada.
Cost: Free. Light refreshments will be served.

Abstract:

The Adjoint Variable Method (AVM) enables efficient estimation of the sensitivities of the desired response or objective function with respect to all the parameters of a high frequency structures.  These parameters may include material properties or dimensions of different subdomains.  The AVM estimates the first order sensitivities of the response of interest with respect to all parameters using only one extra electromagnetic (EM) simulation.  This can be contrasted with the finite difference approaches that require at least n extra simulations, where n is the number of parameters.  The cost of estimating the second order sensitivities (Hessian matrix) of the response is also reduced from O(n2) to only n extra EM simulations.  The AVM has been applied to accelerate the design of microwave and photonic structures.  It has been integrated in surrogate-based modeling and optimization of high frequency structures.  It has been also utilized in applications with large number of parameters such as microwave imaging and cloaking.

In this talk, I review the existing AVM tools and their applications to high frequency structures. Different AVM approaches that apply to dispersive structures such as metamaterials, THz structures, and plasmonics are reviewed.  Recent anisotropic and nonlinear AVM techniques and their applications will be addressed.  I will conclude my talk with discussion on some possible areas for research in this area.

About the Speaker:

Mohamed H. Bakr received a B.Sc. degree in Electronics and Communications Engineering from Cairo University, Egypt in 1992 with distinction (honors).  In June 1996, he received a Master’s degree in Engineering Mathematics from Cairo University. In 1997, he was a student intern with Optimization Systems Associates (OSA), inc.  From 1998 to 2000, he worked as a research assistant with the Simulation Optimization Systems (SOS) research laboratory, McMaster University, Hamilton, Ontario, Canada.  He earned the Ph.D. degree in September 2000 from the Department of Electrical and Computer Engineering, McMaster University.  In November 2000, he joined the Computational Electromagnetics Research Laboratory (CERL), University of Victoria, Victoria, Canada as an NSERC Post Doctoral Fellow.  Dr. Bakr received a Premier’s Research Excellence Award (PREA) from the province of Ontario, Canada, in 2003.  He also received an NSERC Discovery Accelerator Supplement (DAS) award in 2011.  In 2014, he was a co-recipient of Chrysler’s innovation award for a project on novel designs of hybrid cars.  His research areas of interest include optimization methods, computational electromagnetics, computer-aided design and modeling of microwave circuits and photonic devices, nanotechnology, neural network applications, smart analysis of high frequency structures and efficient optimization using time/frequency domain methods. He is currently working as professor with the Department of Electrical and Computer Engineering, McMaster University.  He is the author/coauthor of over 220 journal and conference papers, one book on engineering optimization, two book chapters on optimization and electromagnetic modeling, and two patents.

Location Information:

Room B308 is located on the ground floor of the ‘B’ building of Sexton Campus. 1360 Barrington Street, Halifax.


Demystifying Signal Integrity in High-Speed Designs

August 7, 2015
9:30 amto11:00 am

The Electrical and Computer Engineering Department of Dalhousie University, along with the Signal Processing / Microwave Theory and Techniques Joint Chapter and Circuits and Systems / Solid State Circuits Society Joint Chapter of the IEEE Canadian Atlantic Section wish to invite you to the following presentation.

Title of Talk: Demystifying Signal Integrity in High-Speed Designs
Speaker: Ramachandra Achar, Carleton University
Time: 9:30am – 11:00am, Friday, August 7th, 2015
Place: Dalhousie University, Sexton Campus, Room B308 • Halifax • NS • Canada.
Cost: Free. Light refreshments will be served.

Abstract:

With the increasing demands for higher signal speeds coupled with the need for decreasing feature sizes, signal integrity effects such as delay, distortion, reflections, crosstalk, ground bounce and electromagnetic interference have become the dominant factors limiting the performance of high-speed systems. These effects can be diverse and can seriously impact the design performance at all hierarchical levels including integrated circuits, printed circuit boards, multi-chip modules and backplanes. If not considered during the design stage, signal integrity effects can cause failed designs. Since extra iterations in the design cycle are costly, accurate prediction of these effects is a necessity in high-speed designs. Consequently, preserving signal integrity has become one of the most challenging tasks facing designers of modern multifunction and miniature electronic circuits and systems. This talk provides a comprehensive approach for understanding the multidisciplinary problem of signal integrity: issues/modeling/analysis in high-speed designs.

About the Speaker:

Ramachandra Achar (S’95-M’00-SM’04-FM’13) received the B. Eng. degree in electronics engineering from Bangalore University, India in 1990, M. Eng. degree in micro-electronics from Birla Institute of Technology and Science, Pilani, India in 1992 and the Ph.D. degree from Carleton University in 1998.

Dr. Achar currently is a professor in the department of electronics engineering at Carleton University. Prior to joining Carleton university faculty (2000), he served in various capacities in leading research labs, including T. J. Watson Research Center, IBM, New York (1995), Larsen and Toubro Engineers Ltd., Mysore (1992), Central Electronics Engineering Research Institute, Pilani, India (1992) and Indian Institute of Science, Bangalore, India (1990). His research interests include signal/power integrity analysis, EMC/EMI analysis, circuit simulation, parallel and numerical algorithms, microwave/RF algorithms, modeling/simulation methodologies for sustainable and renewable energy, and mixed-domain analysis.

Dr. Achar has published over 180 peer-reviewed articles in international transactions/conferences, six multimedia books on signal integrity and five chapters in different books. Dr. Achar received several prestigious awards, including Bharat Guarav Award (2014), Carleton university research achievement awards (2010 & 2004), NSERC (Natural Science and Engineering Research Council) doctoral medal (2000), University Medal for the outstanding doctoral work (1998), Strategic Microelectronics Corporation (SMC) Award (1997) and Canadian Microelectronics Corporation (CMC) Award (1996). He was also a co-recipient of the IEEE advanced packaging best transactions paper award (2007) and IEEE T-CPMT best transactions paper award (2013). His students have won numerous best student paper awards in international forums.

Prof. Achar currently serves as the Distinguished Lecturer of IEEE EMC Society, General Chair for HPCPS-2015 (IEEE International Workshop on High-Performance Chip Package and Systems), General Co-Chair of NEMO-2015 (Electromagnetic and Multi-physics based modeling, simulation and optimization for RF, microwave and terahertz applications) and on the executive/steering/technical-program committees of several leading IEEE international conferences, such as EPEPS, EDAPS, SPI, ASP-DAC, ECTC and ISCAS, etc. and in the technical committees, EDMS (TC-12 of CPMT) and CAD (MTT-1). Dr. Achar previously (2011, 2012) served as a Distinguished Lecturer (DLP) of the IEEE Circuits and Systems Society (CASS) and a guest editor of IEEE Transactions on CPMT, for two special issues on “Variability Analysis” and “3DICs/Interconnects”.

He also served as the General Co-Chair of IEEE international conference on Electrical Performance of Electronic Packages & Systems (EPEPS-2010, 2011) and as International Guest Faculty on the invitation of the Dept. of Information Technology of Govt. of India, under the SMDP-II program. He is a founding faculty member of the Canada-India Center of Excellence, a member of the Canadian standards committee on nanotechnology, chair of the joint chapters of CAS/EDS/SSC societies of the IEEE Ottawa Section, and is a consultant for several leading industries focused on high-frequency circuits, systems and tools. Dr. Achar is a practicing professional engineer of Ontario, a Fellow of IEEE and Engineers Institute of Canada (EIC).

Location Information:

Room B308 is located on the ground floor of the ‘B’ building of Sexton Campus. 1360 Barrington Street, Halifax. Enter through the doors off Queen Street, and take the staircase to the left to the third floor.

All IEEE Young Engineers’ Humanitarian Challenge 2015 (AIYEHUM 2015)

June 21, 2015

To all CAS Student/Young Professional:

IEEE Region 10 has invited Canadian engineers to participate in the All IEEE Young Engineers’ Humanitarian Challenge 2015 (AIYEHUM 2015). Proposals are due 2015 June 21. See the competition website for more information, and if you have any questions please feel free to contact your local section executive.

AIYEHUM is a project competition where young scientists and engineers (between the ages of 16 and 35 years) submit proposals of projects which are oriented around humanitarian issues. These
proposals can be their curriculum projects or other projects that are developed out of passion.

The short-listed project proposals will be given a grant of up to US$500 for prototype development. IEEE will assign a mentor for all short-listed teams. All successfully completed projects will be evaluated again and top teams will be partially funded to go to the IEEE Humanitarian Technology Conference to present their work. In addition, IEEE will also give prize money to winning teams.

Laurence T. Yang
ltyang@gmail.com
CAS Chair

Christopher Whitt
christopher@whitt.ca
CAS Vice-Chair

Energy-aware Wireless Transmitters for Broadband Communication Systems

May 5, 2015
2:00 pmto3:30 pm

The Electrical and Computer Engineering Department of Dalhousie University, along with the The Signal Processing / Microwave Theory and Techniques Joint Chapter and Circuits and Systems / Solid State Circuits Society Joint Chapter of the IEEE Canadian Atlantic Section wish to invite you to the following presentation.

Title of Talk: Energy-aware Wireless Transmitters for Broadband Communication Systems
Speaker: Prof. Fadhel Ghannouchi, University of Calgary
Time: 14:00pm – 15:30pm, Tuesday, May 5th, 2015
Place: Dalhousie University, Sexton Campus, Room B310 • Halifax • NS • Canada.
Cost: Free. Light refreshments will be served.

Abstract:

The next wave in the information revolution will consist of bringing intelligence to the information and communication technology (ICT) sector, allowing seamless and intelligent networking and communication between different users using different services and operators. This will lead to the convergence of communication technologies, aiming at the development and deployment of cooperative, broadband and ubiquitous networks that involve existing and future wireless and satellite communications systems. A critical element in enabling the convergence of different communication systems is the development of software defined radio (SDR) that can be used across different frequency bands and for multi-standard applications. This SDR has to be developed to support different frequency carriers and modulation schemes concurrently, in addition to being power- and spectrum-efficient, in order to be able handle Gbps data rates, while being less energy-hungry and more environmentally friendly.

The design of power amplifiers as critical components in any SRD based communication terminal has to be considered closely together with the system architecture, in order to ensure optimal system level performance in terms of quality of signal and power efficiency. This implies the use of adequate transmitter architectures that convert the analog baseband information to architecture-dependent signals, such as Sigma-Delta pulse width modulation based transmitter architecture, polar architecture and LINC architecture. This talk lays out the principles behind SDR Radio systems and examines the design of software-enabled linear and highly efficient RF/DSP co-designed power amplifiers/transmitters for multi-standard and multi-band applications. Recent advances and practical realizations will also be presented and discussed.

About the Speaker:

Fadhel Ghannouchi is currently a professor, Alberta Innovates/Canada Research Chair and founding Director of the iRadio Laboratory (www.iradio.ucalgary.ca) in the Department of Electrical and Computer Engineering at the University of Calgary, Alberta. His research interests are in the areas of RF and wireless communications, nonlinear modeling of microwave devices and communications systems, design of power- and spectrum-efficient microwave amplification systems and design of SDR systems for wireless and satellite communications applications. His research has led to over 650 refereed publications and 16 US patents (4 pending), 4 books and 3 spun-off companies.

Location Information:

Room B310 is located on the third floor of the ‘B’ building of Sexton Campus. Enter through the doors off Queen Street, and take the staircase to the left to the third floor.

IEEE Canada Industry Forum

May 4, 2015
1:30 pmto4:30 pm

The organizers of the IEEE Canada Industry Forum wish to extend to everyone an invitation to attend the upcoming free forum which is taking place as part of the IEEE Canadian Conference on Electrical and Computer Engineering being held in Halifax this year.

Title of Event: IEEE Canada Industry Forum
Time: 1:30pm – 4:30 pm, Monday, May 4th, 2015
Place: Halifax World Trade and Convention Centre
Cost: FREE
RSVP: If you are not already attending the CCECE conference, you can register for this free event here.
Details: More details on the event can be found here.

 
 
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