Friday, April 17, 2015

IEEE APS Lecture Series

TITLEIntegrated Magnetics and Multiferroics for Compact and Power Efficient Sensing, Memory, Power, RF and Microwave Electronics

Date: Thursday, April 23, 2015
Time:6:00 PM
Location: MIT Lincoln Laboratory A-Café
Refreshments & Snacks Served at 5:30pm
Speaker: Prof. Nian Sun /  Director of the W.M. Keck Laboratory for Integrated Ferroics
Abstract: The coexistence of electric polarization and magnetization in multiferroic materials provides great opportunities for realizing magnetoelectric coupling, including electric field control of magnetism, or vice versa, through a strain mediated magnetoelectric interaction effect in layered magnetic/ferroelectric multiferroic heterostructures . Strong magnetoelectric coupling has been the enabling factor for different multiferroic devices, which however has been elusive, particularly at RF/microwave frequencies. In this presentation, I will cover the most recent progress on different magnetic and multiferroic heterostructures and devices, including nanoelectromechanical system magnetoelectric sensors with picoTesla sensitivity by usingFeGaB/Al2Omultilayers, new integrated GHz magnetic inductors based on solenoid structures with FeGaB/Al2O3 and FeCoB/Al2O3 multilayers exhibiting >150% enhanced inductance and quality factor ~20 at GHz frequencies over their air core counterparts, power efficient voltage tunable magnetoelectric inductors with inductance tunability of 50%~150% at GHz, etc. These novel voltage tunable GHz inductors show great promise for applications in radio frequency integrated circuits. At the same time, we will demonstrate other tunable multiferroic devices, including multiferroic voltage tunable bandpass filters [6], tunable bandstop filters, tunable phase shifters, multiferroic antennas,and spintronics, etc. 

For more information, contact:
Raoul O. Ouedraogo,
Wajih Elsallal, , or
Jonathan Doane,
For directions please see:

Speaker Bio: Nian Sun is a professor at the Electrical and Computer Engineering Department, Northeastern University, and Director of the W.M. Keck Laboratory for Integrated Ferroics. He received his Ph.D. degree from Stanford University. Prior to joining Northeastern University, he was a Scientist at IBM and Hitachi Global Storage Technologies. Dr. Sun was the recipient of the NSF CAREER Award, ONR Young Investigator Award, the Søren Buus Outstanding Research Award, etc. His research interests include novel magnetic, ferroelectric and multiferroic materials, devices and subsystems. He has over 160 publications and over 20 patents and patent disclosures. One of his papers was selected as the “ten most outstanding full papers in the past decade (2001~2010) in Advanced Functional Materials”. Dr. Sun has given over ~100 invited presentations or seminars. He is an editor of IEEE Transactions on Magnetics, and a fellow of the Institute of Physics, and of the Institution of Engineering and Technology. 

(Thanks to the Boston Photonics Society for the following directions.)
From interstate I-95/Route 128: Take Exit 31B onto Routes 4/225 towards Bedford - Stay in right lane; Use Right Turning Lane (0.3 mile from exit) to access Hartwell Ave. at 1st Traffic Light.; Follow Hartwell Ave. to Wood St. (~1.3 miles); Turn Left on to Wood Street and Drive for 0.3 of a mile.; Turn Right into MIT Lincoln Lab, at the Wood Street Gate.
From Exit 30B: Take Exit 30B on to Route 2A - Stay in right lane; Turn Right on to Mass. Ave (~ 0.4 miles - opposite Minuteman Tech.).; Follow Mass. Ave for ~ 0.4 miles.; Turn Left on to Wood Street and Drive for 1.0 mile.
Turn Left into MIT Lincoln Lab, at the Wood Street Gate.

Thursday, February 26, 2015

Distinguished Guest Lecturer: Eli Brookner on "MIMO Radars ­­­and Their Conventional Equivalents"

IEEE APS-AESS-MTT Distinguished Lecture with Dr. Eli Brookner, Raytheon Company (retired)
Distinguished Guest Lecturer: Eli Brookner
TITLE: MIMO Radars ­­­and Their Conventional Equivalents
Date: Thursday, February 26, 2015                         Time: 6:00 PM
Location: MIT Lincoln Laboratory (A-Cafe)             
Refreshments served at 5:30pm. INCLUDES COOKIES, DRINKS, FREE PIZZA.
Contact: Raoul Ouedraogo x7949 –

Abstract: This talk is given in tutorial form for the benefit of those not familiar with MIMO. The aim is to give physical insight into MIMO and its conventional equivalents. The math will be limited to the basic Fourier Transform which we all learned in undergraduate college. We will start with an explanation of MIMO and conventional arrays. It had been shown by the speaker in the past that contrary to common belief a MIMO full/thin array does not provide orders of magnitude better resolution and accuracy (10x, 100x or 1000x better) than a conventional array. Specifically, It was shown that that a conventional full/thin array can do just as well as a MIMO full/thin array. The conventional full/thin array had some grating lobes (GLs) but these were dealt with. Here a new conventional array that does not have GLs but has the SAME accuracy and resolution as the MIMO full/thin array is presented. It is a conventional thin/full array radar which is the conventional full/thin array radar with the roles of the arrays reversed, thin array transmitting and full array receiving.

It is also  shown that conventional equivalents to MIMO radar systems can do just as well as the MIMO systems in rejecting barrage-noise jammers, repeater jammers, hot-clutter jammers and main-lobe jammers. Signal processing loads, waveforms and the operation of the MIMO and its equivalents are detailed.        

Dr. Eli Brookner Bio:

Tuesday, September 16, 2014

IEEE APS Distinguished Guest Lecturer: Brian M. Kent

Distinguished Guest Lecturer: Brian  M.  Kent
TITLE: Characterization of Space Shuttle Ascent Debris Based on Radar Scattering and Ballistic Properties – Evolution of the NASA Debris Radar (NDR) System

Date: Tuesday, September 23, 2014                         Time: 3:00 PM
Location: MIT Lincoln Laboratory (Auditorium)           Refreshments served at 2:30pm

Abstract: This presentation (with optional break) introduces the NASA Debris Radar (NDR) system developed to characterize debris liberated by the space shuttle (and any follow-on rocket system) during its ascent into space.  Radar technology is well suited for characterizing shuttle ascent debris, and is especially valuable during night launches when optical sensors are severely degraded.  The shuttle debris mission presents challenging radar requirements in terms of target detection and tracking, minimum detectable radar cross-section (RCS), calibration accuracy, power profile management, and operational readiness. After setting the stage with background of the Columbia accident, I initially describe the NDR system consists of stationary C-band radar located at Kennedy Space Center (KSC) and two X-band radars deployed to sea during shuttle missions.  To better understand the signature of the shuttle stack, Xpatch calculations were generated at C and X band to predict the radar signature as a function of launch time.  These calculations agreed very well with measured data later collected.  Various sizes, shapes, and types of shuttle debris materials were characterized using static and dynamic radar measurements and ballistic coefficient calculations.  After an (Optional) break, my second Part discusses the NASA Debris Radar (NDR) successes, which led to a new challenge of processing and analyzing the large amount of radar data collected by the NDR systems and extracting information useful to the NASA debris community.  Analysis tools and software codes were developed to visualize the shuttle metric data in real-time, visualize metric and signature data during post-mission analysis, automatically detect and characterize debris tracks in signature data, determine ballistic numbers for detected debris objects, and assess material type, size, release location and threat to the orbiter based on radar scattering and ballistic properties of the debris. Future applications for space situational awareness and space-lift applications will also be discussed.

For more information, contact:
Raoul O. Ouedraogo,
Wajih Elsallal, , or
Jonathan Doane,
Please contact Jonathan Doane to RSVP or if you are interested in attending remotely via WebEx before 9-22-2014. 

Foreign national visitors to Lincoln Lab require visit requests. Please pre-register by e-mail to and indicate your citizenship.
For directions please see:

Speaker Biography
Dr. Brian M. Kent is a Consultant in Aerospace, Science, and Technology, and an adjunct professor of Electrical Engineering with Michigan State University's Department of Electrical Engineering.  He recently completed 37 years of Service to the United States Air Force having most recently served as the Chief Technology Officer of Air Force Research Laboratory, Wright-Patterson Air Force Base, Ohio. As CTO, he was AFRL’s principal scientific and technical expert for a 6,500 person organization while overseeing a $2.2B+ research portfolio. He is an internationally recognized scientific expert, and provided technical advice to AFRL management and the professional staff. He has significant experience in engineering education, radar, radar signature, and other radio frequency technologies. He is currently a consultant supporting both academic, and industrial partners related to the aerospace industry.
During his previous tenure as AFRL’s Sensor’s Directorate Chief Scientist, he served as the directorate's principal scientific and technical adviser and primary authority for the technical content of the science and technology portfolio. He identified research gaps and analyzes advancements in a broad variety of scientific fields, providing advice on their impact on laboratory programs and objectives. He served as an internationally recognized scientific expert, and provided authoritarian counsel and advice to AFRL management and the professional staff as well as to other government organizations. He collaborated on numerous interdisciplinary research problems that encompass multiple AFRL directorates, customers from other DOD components, as well as the manned space program managed by NASA.

Dr. Kent also served the USAF as Senior Scientist for Low Observables and Electromagnetics, Air Force Research Laboratory, where he performed and directed research, and development activities at the Multi-Spectral Radar Signature Measurement Facility, His primary responsibilities include the development and transition of advanced low observable electromagnetic analysis and measurement techniques to the Department of Defense and their aerospace industrial partners, and profoundly impacted the development and deployment of the F-117, B-2, F-22, and F-35 for the USAF. Dr. Kent's fundamental research interests encompass extremely broadband electromagnetic test and evaluation techniques, with special emphasis on the acquisition of measured performance data from basic 6.1/6.2 technology components through fully fielded and sustained weapon systems

Dr. Kent joined the Air Force Avionics Laboratory in 1976 as cooperative engineering student through Michigan State University. He received a National Science Foundation Fellowship in 1979, working at both the Air Force Wright Aeronautical Laboratories and the Ohio State University Electroscience Laboratory until the completion of his doctorate. During his tenure with AFRL and its predecessor organizations, Dr. Kent held a variety of positions, making pioneering and lasting contributions to the areas of signature measurement technology, and successfully established international standards for performing radar signature testing before retiring from the USAF after 37 years of service.

Dr Kent was a lecturer for Georgia Tech Research Institute for over 9 years, and concurrently became an adjunct professor in 1998 at Michigan State University, and has served the department on the Visiting Committee, ABET accreditation, ECE Chair Search Committee, Deans Search Committee, and Dean’s advisory Committee. He has also participated in reforming the Senior Design Project classes, and has served for many years as a judge at the Spring and Fall Engineering “design day”.

Dr. Kent has authored and co-authored more than 90 archival articles and technical reports and has written key sections of classified textbooks and design manuals. He has delivered more than 200 lectures, and developed a special DOD Low Observables Short Course that has been taught to more than 3,000 scientists and engineers since its inception in 1989. Dr. Kent has provided technical advice and counsel to a wide range of federal agencies, including the Department of Transportation, the Department of Justice and NASA's Space Shuttle Program. He is also an international technical adviser for the DOD and has provided basic research guidance to leading academic institutions.

1980 BS degree in electrical engineering, highest honors, Michigan State University, East Lansing
1981 MS degree in electrical engineering, Ohio State University, Columbus
1984 Doctor of Philosophy degree in electrical engineering, Ohio State University, Columbus

2014 Distinguished Presidential Rank Award Finalist
2014 Claude Erickson Distinguished Engineering Alumni Award, Michigan State University
2009 Meritorious Presidential Rank Award
Fellow, Air Force Research Laboratory
Samuel Burka Award (two-time winner), Avionics Laboratory
Best Paper Award, National Conference of Standards Laboratory
Signature Technology Management Excellence Award, AFRL
Signature Technology Director's Award, AFRL
William F. Bahret Signature Technology Technical Achievement Award, AFRL
Director's Award, Sensors Directorate, AFRL
Letter of Commendation, B-2 Systems Program Office, Aeronautical Systems Division
Staff Recognition Award, Columbia Accident Investigation Board
Letter of Commendation, NASA
External Customer Support Award, Sensors Directorate, AFRL
John D. Ryder Distinguished Alumni Award, Michigan State University
Best Dissertation in Electrical Engineering, Ohio State University

IEEE Distinguished Lecturer, Antenna and Propagation Society
Fellow, Institute of Electrical and Electronic Engineers
Fellow, Antenna Measurement Techniques Association (AMTA)
Former Technical Coordinator, Vice President and President, AMTA
Associate Editor, Editorial board, IEEE Antenna and Wireless Propagation Letters
Former Associate Editor, "AMTA Corner," IEEE Antenna and Propagation Magazine
Eta Kappa Nu, Tau Beta Pi and Phi Kappa Phi Honorary Societies

Thursday, May 15, 2014

IEEE AP-S Boston Lecture Series May 20, 3Pm @ MITRE (WebEx enabled)

Guest Lecturer: Prof. Ramakrishna Janaswamy, University of Massachusetts, Amherst
TITLEOperating Electrically Small Antennas for High Information Bandwidths

Date: Tuesday, May 20, 2014                         Time: 3:00 PM
Location: MITRE (Building C Lobby)              Refreshments served at 2:30pm

You can also attend the meeting from the comfort of your office/home through WebEx. Please see below for login info.

AbstractIt is well known that electrically small (size to be much smaller than the wavelength at the operating carrier frequency), passive antennas suffer from fundamental limitations on achievable bandwidths. The bandwidth of electrically small antennas could, however, be substantially improved by incorporating lossy matching networks. But this will be at the cost of significantly higher power dissipation in the matching networks, which will tend to decrease the overall radiation efficiency. If, on the other hand, the antenna currents could somehow be made to change rapidly at a rate directly dictated by the message signal, then there is no difficulty in radiating such a rapidly varying waveform from the induced antenna currents, despite its narrow input impedance bandwidth.
In this talk we discuss the theory of operation of a linear, electrically small, time-varying antenna by considering a thin dipole loaded with a fast switching element. Time-variation of antenna structure is achieved by operating the switch via a message signal that has the overall effect of transferring a modulated carrier to antenna currents for subsequent radiation.
Time-domain integral equation and linear state-space theory is used to understand the dynamics of the radiated waveform and the antenna input current. It is demonstrated that the antenna has capabilities of radiating waveforms with an information bandwidth that is an order of magnitude greater than possible with an electrically small traditional antenna. Effect of switch parameters such as the finite OFF resistance and finite switching times relative to the time period of the RF carrier on the operation of the antenna are also presented.
For more information, contact:
Raoul O. Ouedraogo, or
Wajih Elsallal, Phone:(319) 775-5296
Foreign nationals should RSVP by contacting Wajih Elsallal no later than 5/15/2014

Direction to MITRE:
Refer to the link below. Please use the lobby at C-building.

WebEx instruction:
Please login at 2.45pm to give yourself enough time for troubleshooting connection problem.
 Meeting information
 Topic: Operating Electrically Small Antennas for High Information Bandwidths
 Date: Tuesday, May 20, 2014
 Time: 3:00 pm, Eastern Daylight Time (New York, GMT-04:00)
 Meeting Number: 596 891 596
Meeting Password: (This meeting does not require a password.)
 To start or join the online meeting
Provide your phone number when you join the meeting to receive a call back.
 Teleconference information
 Alternatively, you can call:
 Call-in toll-free number: 1-866-2030920  (US)
 Call-in number: 1-206-4450056  (US)

Conference Code: 796 395 4371