Gallium Nitride Power MMICs: Fact and Fiction 🗓

— (Buenaventura Section) – Efficiency, output power, low loss, thermal, issues …

Meeting Date: Wednesday, March 15, 2017
Time: 6:30 PM Pizza & Networking; 7:00 PM Presentation
Speaker: Charles Campbell of Qorvo, inc.
Location: Skyworks Solutions
Cost: FREE for IEEE members
Event Details: IEEE Buenaventura
Summary: Gallium Nitride (GaN) based transistor technology’s characteristics of very high current density combined with high voltage operation have held promise to vastly improve many microwave circuit applications that presently utilize Gallium Arsenide (GaAs) devices. Today, GaN transistors are capable of high voltage operation while simultaneously demonstrating fT & fMAX characteristics more typical of lower voltage GaAs PHEMT devices. The potential benefits of GaN device characteristics combined with monolithic microwave integrated circuit (MMIC) technology are many. Highly efficient switched modes of power amplifier operation should be possible at higher output power levels and frequency. High output impedance typical of transistors operated at three to five times the voltage of GaAs should facilitate lower loss matching networks due to the reduced transformation ratio. Alternately, transistor periphery and corresponding output power could be dramatically increased while maintaining impedance transformation ratios similar to that of existing GaAs PHEMT amplifiers. The higher output power density of GaN devices should lead to greatly reduced die size for GaN implementations of existing power amplifier functions. The improved heat flow realized by the high thermal conductivity Silicon Carbide (SiC) substrate material should allow for acceptable junction temperatures even with the much higher power dissipation. Very high power switches could be designed by using large control voltages and taking advantage of the high current capability (high Imax) of GaN. While the advantages of GaN are manifest, many of the features that make GaN transistors attractive can be shown to create significant issues that are typically not encountered with lower voltage technologies. In this talk, examples and scenarios are discussed highlighting the benefits and issues associated GaN MMIC technology.
Bio: Charles F. Campbell PhD received the B.S.E.E., M.S.E.E. and Ph.D. degrees from Iowa State University in 1988, 1991 and 1993 respectively. From 1993 to 1998 he was with Texas Instruments involved with microwave module design and MMIC development. Since 1998 he has been with various divisions of TriQuint Semiconductor where he has held positions of Design Team leader, Design Engineering Director and Design Engineering Fellow. He is currently an Engineering Senior Fellow with the Infrastructure and Defense Products Division of Qorvo. A Fellow of the IEEE, he has served on the Editorial Board for IEEE Transactions on Microwave Theory and Techniques, general chair for the 2015 Compound Semiconductor Integrated Circuits Symposium, and the IEEE Microwave Prize selection committee. He has authored or co-authored over 50 journal and conference papers, and authored an on-line book chapter on MMIC power amplifier design.

RF Receivers and their Assorted Benefits and Drawbacks 🗓

— (Central Coast) =spring social, receivers, advantages, issues, future directions …

— IEEE Central Coast Spring Pizza Social
Meeting Date: Wednesday, March 29, 2017
Time: 6:00 PM Networking; 6:30 PM Presentation
Speaker: Brian Williams PhD – IEEE Central Coast Section Vice Chair
Location: Goleta
Cost: FREE for IEEE members ($10 for guests at door)
RSVP: requested for guests
Event Details:
Summary: Modern technology utilizes RF receivers for its eyes and ears. This talk will briefly go through the different types of receivers and their assorted benefits and drawbacks. We will also discuss possible future directions for RF receivers and how they will continue to enrich our lives.”
Bio: Brian Williams PhD – IEEE Central Coast Section Vice Chair

Young Professionals meet for Free Boba 🗓

— (OC Young Professionals) – includes board games and a casual atmosphere …

OC IEEE Young Professionals –


Meeting Date: Tuesday, April 4, 2017
Time: 6:30 – 9:30 PM
Dinner can be bought at any of the restaurants in UTC
Location: Cha For Tea, 4187 Campus Dr. M173, Irvine
Cost: none
RSVP: Just show up
Event Details:
Summary: OC IEEE Young Professionals is hosting our monthly Boba Night at Cha for Tea! Come join us for free Boba, board games and a casual atmosphere!

The Things We Ought to Know About Digital Communications: Part 4 — IEEE Distinguished Lecture Series 🗓

—- CSULB Systems Council Chapter Presentation

— CSULB Systems Council Chapter Presentation
Meeting Date: Thursday, March 23, 2017
Time: 12 noon;
Speaker: Dr. Bernard Sklar
Location: Long Beach
Cost: none,
RSVP: requested, through website
Event Details: CSULB
The fourth part of this series on what we’ve been given by the “giants in our field,”
covers the area of Fading Channels: Characterization and Mitigation. We examine the
phenomenon of multipath with four basic relationships: Multipath Intensity Profile, Spaced-
Frequency Correlation, Spaced-Time Correlation, and Power-Doppler Spectrum. This model
allows us to understand the mechanisms that cause all types of fading, and how to overcome
their degrading effects. The talk is geared toward managers, software developers, and whoever
wants to partake in the passion that drives communication engineers.

The details involve: Large-scale fading, small-scale fading, and their mechanisms. Differences
between Frequency-Selective fading and Flat fading; Fast fading and Slow fading; Coherence
bandwidth, Coherence time, and Doppler spread. Why is signal dispersion independent of fading
rapidity? Degradation effects: loss in SNR, ISI distortion, irreducible error rate, pulse mutilation,
and Doppler spreading. How to design a system that can withstand fading degradations.

Bio: Dr. Bernard Sklar has over 60 years of technical experience at the following companies: Republic Aviation, Hughes Aircraft, Litton Industries, and The Aerospace Corporation. At Aerospace, he helped develop the MILSTAR satellite system, and was the principal architect for EHF Satellite Data Link Standards. Currently, he is the Director of Advanced Systems at Communications Engineering Services, a consulting company he founded in 1984. He has taught engineering courses at several universities, including the University of California, Los Angeles and the University of Southern California. He was an External Examiner of Digital Communication Engineering at the University of Cape Town, South Africa, and has presented numerous training programs throughout the world.
Dr. Sklar has published and presented over 100 technical papers. He received the 1984 Prize Paper Award from the IEEE Communications Society for his series on digital communications, and he is the author of the book, Digital Communications: Fundamentals and Applications, 2nd Edition, Prentice-Hall, 2001. His academic credentials include a B.S. degree in Math and Science from the University of Michigan, an M.S. degree in Electrical Engineering from the Polytechnic Institute of Brooklyn, New York, and a Ph.D. degree in engineering from the University of California, Los Angeles.

Massive MIMO Communications with One-Bit Quantization 🗓

— (ComSIG) – throughput, bandwidth, antennas, signal processing, algorithms, decoding …

Meeting Date: Wednesday, April 19, 2017
Time: 6:30 PM Networking & Dinner; 7:00 PM Presentation
Speaker: Lee Swindlehurst, Professor at University of California Irvine
Location: Tustin
RSVP: requested, through website
Event Details:
Summary: As the quest for increased wireless throughput marches on, proposals abound for 5G systems based on orders of magnitude more antennas (massive MIMO) and greater bandwidths at higher frequencies (millimeter waves). To avoid a corresponding exponential increase in the cost of the hardware required for such systems, attention has recently focused on the use of very coarse analog-to-digital and digital-to-analog converters, even down to the level of one-bit quantization for both in-phase and quadrature components. This talk reviews some of the signal processing impacts of one-bit quantization on MIMO communications systems, and provides examples of algorithms for channel estimation, uplink decoding and downlink precoding that attempt to offset these impacts.
Bio: Lee Swindlehurst received the B.S., summa cum laude, and M.S. degrees in Electrical Engineering from Brigham Young University, Provo, Utah, in 1985 and 1986, respectively, and the PhD degree in Electrical Engineering from Stanford University in 1991. From 1986-1990, he was employed at ESL, Inc., of Sunnyvale, CA, where he was involved in the design of algorithms and architectures for several radar and sonar signal processing systems. He was on the faculty of the Department of Electrical and Computer Engineering at Brigham Young University from 1990-2007, where he was a Full Professor and served as Department Chair from 2003-2006. During 1996-1997, he held a joint appointment as a visiting scholar at both Uppsala University, Uppsala, Sweden, and at the Royal Institute of Technology, Stockholm, Sweden. From 2006-07, he was on leave working as Vice President of Research for ArrayComm LLC in San Jose, California. He is currently a Professor of the Electrical Engineering and Computer Science Department at at the University of California Irvine (UCI), and a Hans Fischer Senior Fellow in the Institute for Advanced Studies at the Technical University of Munich. He served as the Associate Dean for Research and Graduate Studies in the Henry Samueli School of Engineering at UCI from 2013-16. His research interests include sensor array signal processing for radar and wireless communications, detection and estimation theory, and system identification, and he has over 275 publications in these areas.

Dr. Swindlehurst is a Fellow of the IEEE, a past Secretary of the IEEE Signal Processing Society, past Editor-in-Chief of the IEEE Journal of Selected Topics in Signal Processing, and past member of the Editorial Boards for the EURASIP Journal on Wireless Communications and Networking, IEEE Signal Processing Magazine, and the IEEE Transactions on Signal Processing. He is a recipient of several paper awards: the 2000 IEEE W. R. G. Baker Prize Paper Award, the 2006 and 2010 IEEE Signal Processing Society’s Best Paper Awards, the 2006 IEEE Communications Society Stephen O. Rice Prize in the Field of Communication Theory, and is co-author of a paper that received the IEEE Signal Processing Society Young Author Best Paper Award in 2001.

2014 NEC Changes and Recent Plan Check Adventures 🗓

— (PES/IAS) – Calif electrical code, changes, corrections, personal experiences …

— PES/IAS Monthly Seminar —
Meeting Date: Thursday, March 16, 2017
Time: 6:00PM Dinner & Networking; 7:30 PM Presentation
Speaker: Mr. Yigit Bulut, P.E
Location: Tustin
Cost: Dinner at 630PM; $30 Non-advance payment at-the-door, $25 Advance payment by mail-in check, Students free.
RSVP: requested, through website
Event Details:
As of January 1, 2017 the State of California adopted the 2016 California Electrical Code which is based on the 2014 National Electrical Code. We will review and discuss some of the significant changes, especially those that the speaker has had personal experience with because of work in other states. We will review some of the corrections and associated issues.
Mr. Bulut received his MBA in Finance from the University of Baltimore in 1997 and his BS in Electrical Engineering from the University of Akron in 1986. Mr. Bulut is a registered Professional Engineer in multiple states. He is an Uptime Institute Accredited Tier Designer and a Senior Member of IEEE. Mr. Bulut has 30 years of project management and electrical engineering design experience. He is a recognized technical leader and electrical designer for data centers as well as other mission critical facilities. In addition to data center design, Yigit’s experience includes the design of medium and low voltage power distribution systems, emergency systems and substations for healthcare, medical laboratory, pharmaceutical, commercial and industrial facilities. His experience also includes the modeling, analysis and protection of power systems, the design of medium voltage capacitor and harmonic filter banks, medium voltage switchgear and circuit breakers.

DELDroid: An Automated System for Determination and Enforcement of Least-Privilege Architecture in Android 🗓

— (CyberSIG) – platforms, granularity, inheritance, violations, vulnerabilities …

— CyberSIG Monthly Technical Talk — Co-Sponsor IEEE Computer Society
Meeting Date: Wednesday, March 22, 2017
Time: 6:30 PM Networking& Dinner; 7:00 PM Presentation
Speaker: Mahmoud Hammad,Software Engineering PhD student in the Informatics Department within the School of Information and Computer Science at the University of California, Irvine.
Location: Tustin
Cost: none, or $10 for dinner
RSVP: requested, through website
Event Details:
Modern mobile platforms rely on a permission model to guard the system’s resources and apps. In Android, since the permissions are granted at the granularity of apps, and all components belonging to an app inherit those permissions, an app’s components are typically overprivileged, i.e., components are granted more privileges than they need to complete their tasks. Systematic violation of least-privilege principle in Android has shown to be the root cause of many security vulnerabilities.

To mitigate this issue, we have developed DELDROID, an automated system for determination of least privilege architecture in Android and its enforcement at runtime. A key contribution of our approach is the ability to limit the privileges granted to apps without the need to modify them. DELDROID utilizes static program analysis techniques to extract the exact privileges each component needs for providing its functionality. A Multiple-Domain Matrix representation of the system’s architecture is then used to automatically analyze the security posture of the system and derive its least-privilege architecture. Our experiments on hundreds of real-world apps corroborate DELDROID’s ability in effectively establishing the least-privilege architecture and its benefits in alleviating the security threats.

Bio: Mahmoud Hammad
Mahmoud Hammad is a Software Engineering PhD student in the Informatics Department within the School of Information and Computer Science at the University of California, Irvine. He is also a member of the Institute for Software Research and a researcher at the Software Engineering and Analysis Laboratory (SEAL) led by his advisor Dr. Sam Malek.

Mahmoud’s general research interests are in the field of software engineering and his main focus in the area of software architecture and Android mobile security. Mahmoud received his M.S. degree in software engineering with an outstanding achievement award from George Mason University (2013). After he finished his B.S. in Computer Science (2005), he worked as Oracle database application developer for six years followed by two years as mobile software developers.

Turning Electronics Simulation Inside Out 🗓 🗺

— (CPMT) – electromagnetic field simulation, high performance, physics-based, SI analysis, future …

Meeting Date: Tuesday, March 21, 2017
Time: 6:30 PM Networking; 7:00 PM Presentation
Speaker: Dr. Larry Williams of ANSYS, Inc.
Location: Broadcom, Irvine
Cost: none
RSVP: Registration is appreciated, but not required. Everyone is invited. Dinner is provided at no cost.
Event Details:
Summary: In this forward-looking keynote, hear ANSYS Director of Product Management Dr. Larry Williams share insights on how high-performance electronic simulation has been turned inside out with electromagnetic field simulation. Modern simulation has physics-based solvers in the foreground supported by circuit and system simulation rather than the other way around. Dr. Williams will highlight the growth of advanced signal integrity analysis, from the creation of HFSS to the automated electronic assembly simulation of today. He will conclude with his vision on what the future will bring and how it will impact organizations that embrace it.
Bio: Dr. Larry Williams is Director of Product Management at ANSYS Inc., Electronics Business Unit. He is responsible for the strategic direction of the company’s electrical and electronics products, including the High Frequency Structure Simulator (HFSS) finite element simulator. Dr. Williams is an expert in the application of electromagnetic field simulation to the design of antennas, microwave components, and high-speed electronics. He has over 20 years’ experience in the fields of electromagnetics and communications engineering, has delivered technical lectures internationally, and has published numerous technical papers on the subject. He and his co-authors won the prestigious H.A. Wheeler Prize Paper Award in the IEEE Transactions on Antennas and Propagation, 1995, and the best paper award at DesignCon 2005. He serves on the UC Irvine Henry Samueli School of Engineering Dean’s Advisory Board and on the California State Polytechnic University Electrical Engineering Department Advisory Board.

Dr. Williams held various senior engineering positions in the Engineering Division of Hughes Aircraft Company, Radar Systems Group, where he was responsible for hardware design and development of advanced active phased array radar antennas, array element and aperture design, associated microwave subsystems, and antenna metrology. He received his Masters, Engineers, and Ph.D. degrees from UCLA in 1989, 1993 and 1995, respectively.

Technology Requirements and Initiatives for 5G Radio Front-Ends … 🗓

A review of semiconductor and package technology choices for 5G communication systems

Meeting Date: Tuesday, February 28, 2017
Time: 6:30-7:00pm Gather and Pizza/Refreshments. 7PM Presentation
Speaker: Dr. Stephen Kovacic, Director, Technology for Skyworks Solutions
Location: Newbury Park
Cost: none,
Event Details: IEEE vtools
 A review of semiconductor and package technology choices for 5G communication systems are considered. The market context for 4G and future 5G systems along with existing RF Front-End UE architectures are reviewed with emphasis on SIP technology. Silicon-on-Insulator, InP HBTs, and other technology candidates are discussed within this context. We conclude that rapid customization at the module level is needed in order to serve different manifestations of 5G systems in the early phases of market deployment and demonstrators.

Industry Trends & Innovation: Past, Present, and Future … 🗓

The Electrical Grid Examined

— IEEE PES, PELS, and IAS joint chapter meeting
Meeting Date: Tuesday, February 27, 2017
Time: 6:00 – 8:30 PM
Speaker: Dr. Damir Novosel, President of IEEE PES Society and Quanta-Technology
Location: SDG&E, San Diego
Cost: none
RSVP: requested, through website
Event Details: IEEE vtools
Reliable and efficient electrical grid operation is critical to society. Electrical utility industry has been experiencing significant changes in the last decade caused by new technology trends, environmental drivers and weather patterns, changing public needs, and regulatory requirements. The electrical power and energy industry in the next decades will be different than it is today to meet the demands of the society and address challenges. We are at a crossroads in making business and technical decisions that will allow us to optimally and cost-effectively manage the grid.

The presentation will address how electrical grid developed since the first electric power plant, what some of the challenges and opportunities facing modern grids are, and how industry trends and innovation will shape the future grid.