News

February 2011 » Sungwon Chung to present at the 2011 International Microwave Symposium

Sungwon's paper is entitled "Digital Predistortion Using Quadrature Delta-Sigma Modulation with Fast Adaptation for WLAN Power Amplifiers."

February 2011 » Philip Godoy, SungWon Chung, and Taylor Barton to present at the 2011 International Microwave Symposium

Their paper is entitled "A Highly Efficient 1.95-GHz, 18-W Asymmetric Multilevel Outphasing Transmitter for Wideband Applications."

Dr. Seward Rutkove, a Dawsongroup collaborator, wins Prize4Life

The Dawson Group is proud to have collaborated with Dr. Seward Rutkove on his work applying electrical impedance measurements to study Lou Gherig's disease. For his many years of dedicated work in this area, Dr. Rutkove was awarded the Prize4Life in 2011. An article in IEEE spectrum can be downloaded here, and a link to the New York Times article can be found here. Group members Jose Bohorquez,
Roshni Cooper, Hong Ma, Muyiwa Ogunnika, and Michael Scharfstein contributed to this collaboration.

January 2011 » Philip Godoy receives student paper prize at RWW 2011

Philip Godoy received second prize in the student paper competition for the 2011 Topical Conference on Power Amplifiers for Wireless and Radio Applications (PAWR), held January 16-19, 2011. This conference was a part of the IEEE Radio and Wireless Week (RWW). The paper, coauthored with SungWon Chung and Taylor Barton, was entitled "A 2.5-GHz Asymmetric Multilevel Outphasing Power Amplifier in 65-nm CMOS."

January 2011 » Jose L. Bohorquez - paper accepted for VLSI Symposium Special Issue of IEEE JSSC.

Jose's paper, entitled "A Biomedical Sensor Interface with a sinc Filter and Digitally-Assisted Interference Cancelation," will appear in VLSI Symposium Special Issue of the IEEE Journal of Solid-State Circuits.

January 2011 » Godoy, Chung, and Barton to present at 2011 IEEE Radio and Wireless Symposium.

Godoy, Chung, and Barton to present at 2011 IEEE Radio and Wireless Symposium. Philip Godoy, SungWon Chung, and Taylor Barton will present a paper entitled "A 2.5-GHz Asymmetric Multilevel Outphasing Power Amplifier in 65-nm CMOS."

June 2010 » Jose Bohorquez and Willie Sanchez each to present at VLSI Symposium

Jose's paper is entitled "A Digitally-Assisted Sensor Interface for Biomedical Applications. Willie will present his paper entitled "An Energy Management IC for Bio-Implants Using Ultracapacitors for Energy Storage." The conference takes place this year in Honolulu, HI.

May 2010 » Chung, Godoy, and Barton to present at 2010 International Microwave Symposium

SungWon Chung, Philip Godoy, and Taylor Barton will present a paper entitled "Asymmetric Multilevel Outphasing Transmitter Using Class-E PAs with Discreet Pulse Width Modulation" at IMS 2010 in Anaheim, CA.

January 2010 » Khanna, Ogunnika, and Sanchez win TI Scholarships

In January of 2010, TI awarded its Analog Minority Scholarships to Tania Khanna, Muyiwa Ogunnika, and Willie Sanchez. The Dawson group was awarded $11,250 for each of them to further their doctoral studies.

January 2010 » Jose Bohorquez finishes his Ph.D.

In January of 2010, Jose became the first Dawson group student to finish his doctorate.

Celebratory Lunch at Legal Seafood, 3/11/2010

January 2010 » Harneet Khurana finishes his master's degree

Harneet finished his master's thesis, entitled "Memory and Data Communications Link Architecture for Micro-implants," in January of 2010.

Jose Bohorquez » Selected to give MTL Doctoral Dissertation Seminar for the Fall 2009 term

Every term, the MTL Seminar Series Committee chooses one outstanding doctoral student to share their work with the broader MTL community. Look here for more information on the series.

Hyun Boo and Sungwon Chung » Paper Accepted for Publication

Hyun Boo and Sungwong Chung's paper entitled "Adaptive Predistortion Using a Delta-Sigma Modulator for Automatic Inversion of Power Amplifier Nonlinearity," accepted for publication in TCAS-II.

December 2009 » Jose Bohorquez » Paper to be Published in the IEEE Transactions on Microwave Theory and Techniques

Jose Bohorquez' paper will be published in the December issue of the IEEE Transactions on Microwave Theory and Techniques journal.

October 2009 » Philip Godoy » Paper Accepted for Publication in T-MTT

Philip Godoy's paper entitled "Outphasing Energy Recovery Amplifier with Resistance Compression for Improved Efficiency" has just been accepted for publication in the IEEE Transactions on Microwave Theory and Techniques. In this paper, Philip describes a new power amplifier system that greatly increases efficiency while maintaining high linearity.

Dawson Wins Presidential Early Career Award for Scientists and Engineers (PECASE)

Prof. Dawson won a PECASE award after being nominated by the National Science Foundation. For the White House press release, click here.

Technology Review Article on Olumuyiwa Ogunnika's EIM Project

Technology Review article on Muyiwa's project: http://www.technologyreview.com/biomedicine/22415/

March 2009 » Sungwon Chung to present at the 2009 VLSI Symposium

Sungwon will present a paper entitled "A 73.1dB SNDR Digitaly Assisted Subsampler for RF Power Amplifier Linearization Systems" at this year's VLSI Symposium in Kyoto, Japan. The paper describes the use of a subsampling in a power linearization system.

February 2009 » Sungwon Chung, Philip Godoy, and Taylor Barton to present at the 2009 IEEE RFIC Symposium

Sungwon, Philip and Taylor will present a paper entitled "Asymmetric Multilevel Outphasing Architecture for Multi-Standard Transmitters" at this year's RFIC Symposium in Boston. The paper details an exciting new architecture for RF power amplification that we expect will have wide applicability to wireless transmitters.

January 2009 » Hyun Boo Receives Master's Degree

The Dawson group congratulates Hyun Boo for receiveing his Master's degree in January, 2009, for his work on power amplifier linearization techniques. He has returned to Korea to work, and Hyun plans to return to MIT to undertake his Ph.D studies. Congratulations Hyun!

December 2008 » Joel Dawson, David Perreault, and Everest Huang receive a grant from Lincoln Laboratory Advanced Concept Committee

The $125,000 grant is in support of the group's work on the asymmetric multilevel outphasing (AMO) power amplifier architecture.

December 2008 » Jose Bohorquez's Paper Accepted for Publication in JSSC Special Issue on the VLSI Symposium

Jose Bohorquez's paper entilted "A 350μW CMOS MSK Transmitter and 400μW OOK Super-Regenerative Receiver for Medical Implant Communications" has just been accepted for publication in the IEEE Journal of Solid-State Circuits for the VLSI Symposium Special Issue. The paper describes a new transceiver architecture for medical implants.

August 2008 »Jose Bohorquez's work profiled in the Technology Insider

Jose Bohorquez's work on implantable transceivers was profiled in the August, 2008 of MIT Technology Insider.
View PDF

July 2008 » SungWon Chung's Paper Accepted for Publication in T-MTT

SungWon Chung's paper entitled "Energy-Efficient Digital Predistortion with Lookup Table Training Using Analog Cartesian Feedback" has just been accepted for publication in the IEEE Transactions on Microwave Theory and Techniques. In this paper, SungWon describes a system that sets a record for predistortion table training energy efficiency.

July 2008 » Philip Godoy's Paper Accepted for Publication in JSSC

Philip Godoy's paper entitled "Chopper Stabilization of Analog Multipliers, Variable Gain Amplifiers, and Mixers" has just been accepted for publication in the IEEE Journal of Solid-State Circuits. In this paper, Philip lowers the benchmark for offset performance in analog multipliers by two orders of magnitude.

July 2008 » Muyiwa Ogunnika, Michael Scharfstein, Roshni Cooper, and Hongma Shen to Present at EMBC 2008

Muyiwa Ogunnika, Mike Scharfstein, Roshni Cooper, and Hongma Shen have the honor of presenting a conference paper that represents the Dawson group's first collaboration with a medical researcher, Dr. Seward Rutkove at Beth Israel Deaconess Medical Center. They will be presenting a paper entitled "A Handheld Electrical Impedance Myography Probe for the Assessment of Neuromuscular Disease" at the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.

June 2008 » Jose Bohorquez Presents Paper at the VLSI Symposium

Jose Bohorquez presented a paper at this year's VLSI Symposium, held in Honolulu, HI. The work presented a new architecture for implantable transceivers that specifically exploit the body's temperature-controlled environment. His paper was titled "A 35 0μW CMOS MSK Transmitter and 400μW OOK Super-Regenerative Receiver for Medical Implant Communications."

June 2008 » Tania Khanna, Philip Godoy, and Roshni Cooper Receive Masters Degrees

The Dawson group is proud to acknowledge the accomplishments of Tania Khanna, Philip Godoy, and Roshni Cooper, all of whom received their Masters degrees this spring. Roshni will be heading to the San Francisco Bay Area, where she will be working for Cisco Systems. Tania and Philip will be staying at MIT to do their Ph.D. work. Congratulations to all three!

February 2008 » Philip Godoy Receives the ADI Outstanding Student Designer Award

Philip Godoy was awarded the ADI Outstanding Student Designer Award from MIT on February 6, 2008 for his research on nested chopper stabilization in analog multipliers. Chopper stabilization is an offset-cancellation technique used to continuously reject DC offset. In his research he applied the nested chopping technique to an analog multiplier for the first time, achieving a worst-case offset of 1.5uV, the lowest measured offset reported in the analog multiplier literature.

Philip joined the Dawson Research Group in 2006 to pursue his MS. and Ph.D. in Electrical Engineering. He received this B.S. from the University of California, Berkeley.

February 2008 » Joel Dawson, David Perreault, and Everest Huang Receive Grant From the MIT Deshpande Center

Joel Dawson, David Perreault, and Everest Huang are co-PIs on a Deshpande Center Ignition grant:
http://web.mit.edu/newsoffice/2008/deshpande-tt0319.html

January 2008 » Joel Dawson Wins NSF Career Grant

Joel L. Dawson, core member of the Microsystems Technology Laboratories, has won a Faculty Early Career Development Award from the National Science Foundation (NSF). The program will provide $400,000 over five years to support his group's work in cutting-edge wireless transceiver architectures. The title of his proposal was "Digitally-assisted Architectures for Next Generation RF Transceivers." The focus of the work is to exercise architectural design creativity, as well as leverage mathematical optimization techniques, to maximally exploit deep-submicron CMOS for high performance wireless communications.

August 2007 » Willie Sanchez and Michael Scharfstein Receive MEng Degrees

Left: Professor Joel L. Dawson poses with William R. Sanchez after his thesis signing.

MIT Department of EECS and Dawson Research Group members William R. Sanchez and Michael Scharfstein received their MEng degrees after completing required coursework and submitting theses.

Sanchez, part of the first generation of his Dominican family in the U.S., received his B.S. in electrical engineering from MIT in 2005. Sanchez completed his thesis, "A Hierarchical Bottom-up, Equation-based Optimization Design Methodology," in May, and is continuing his studies in the Dawson Research Group. His Ph.D. work focuses on systems-level optimization of analog circuits using geometric programming methods. He is an avid martial artist, and when not in training, he spends his spare time teaching and dancing salsa.

Scharfstein was born in Russia and raised in New York City. He completed his B.S. in Electrical Engineering and Computer Science with a minor in Biomedical Engineering at MIT. In his free time, he enjoys hiking and volunteering as an EMT for MIT Emergency Medical Services. Scharfstein completed his thesis, "A Reconfigurable Electrode Array for Use in Rotational Electrical Impedance Myography," in August.

Jan 2007 » Sungwon Chung to Present Paper at IMS 2007

Sungwon Chung, a graduate student in the Dawson Research Group at MIT, will present a paper entitled "Open-loop Digital Predistortion Using Cartesian Feedback for Adaptive RF Power Amplifier Linearization" at the IEEE Microwave Theory and Techniques Society's (MTT-S) International Microwave Symposium in Honolulu, Hawaii, this June 2007. This paper will present a new adaptive power amplifier linearization technique.

The Symposium is the premier conference of the IEEE MTT-S, a transnational society with more than 9,000 members worldwide, which promotes the advancement of microwave theory and its applications, usually at frequencies from 200 MHz to 1 THz and beyond.

Chung joined the Dawson Research Group in 2005 to pursue his Ph.D. in electrical engineering. He received his B.S. from Pusan National University, Korea, and an M.S. from the Korea Advanced Institute of Science and Technology.

Nov 2006 » Muyiwa Ogunnika Receives New MIT-CIMIT Medical Engineering Fellowship

Link to story

Jul 2006 » CIMIT Awards Grant to Rutkove and Dawson

The Center for the Integration of Medicine and Innovative Technology (CIMIT), Cambridge, MA, recently awarded a proof of principle grant to Joel L. Dawson, Carl Richard Soderberg Professor of Power Engineering at MIT, and Seward Rutkove, Associate Professor of Neurology at Harvard University and Director of the Division of Neuromuscular Diseases at Beth Israel Deaconess Medical Center. The grant will fund the collaborative effort between Dawson and Rutkove to develop a new device that will help diagnose certain types of neuromuscular diseases.

CIMIT is a clinically-centered consortium of clinicians, inventors, engineers, industry leaders, scientists, and even the military. Interdisciplinary teams generate promising, leading-edge ideas that are nurtured and developed until they become solutions for the practicing physician.

Dawson received his S.B. and M.Eng. in electrical engineering from MIT, and Ph.D. in electrical engineering from Stanford University. He joined the faculty of MIT in 2004, where his research interests include analog system theory and its applications.

Rutkove received a BA in chemistry from Cornell University, and an M.D. from Columbia University. His clinical specialty is nerve and muscle diseases, with specific interests in: Dermatomyostitis, polymyositis, inclusion body myositis, amyotrophic lateral sclerosis, neuropathy, including diabetic neuropathy, myasthenia gravis.

Jul 2006 » Ali Hadiashar to Present Paper at ESSCIRC

Dawson Research Group Alum Ali Hadiashar will present his paper, "A Chopper Stabilized CMOS Analog Multiplier with Ultra Low DC Offsets," at the European Solid-State Circuits Conference (ESSCIRC) in September. The conference, to be held in Montreux, Switzerland, provides an annual European forum for the presentation and discussion of recent advances in solid-state circuits.

May 2006 » Dawson Receives EECS Award

Assistant Professor Joel L. Dawson was awarded the Jerome H. Saltzer Award in honor of outstanding recitation instruction during the EECS Annual "Spring Fling" on Sunday, May 21. The event took place at the Boston Museum of Fine Arts' Koch Gallery.